Tigercat 720G 724G 726G FELLER BUNCHER Operator's Manual - PDF DOWNLOAD

720G/724G/726G FELLER BUNCHER

OPERATOR’S MANUAL SERIAL NUMBER 7205601 TO 7206600 SERIAL NUMBER 7243101 TO 7244000 SERIAL NUMBER 7265001 TO 7266000

ISSUE 3.0, FEBRUARY, 2015 Tigercat Industries Inc. P.O. Box 637 Brantford, Ontario Canada N3T 5P9 Tel: (519) 753-2000 Fax: (519) 753-8272

Introduction

Tigercat 720G/724G/726G Feller Buncher

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Tigercat 720G/724G/726G FELLER Tigercat 720G/724G/726G Feller Buncher

BUNCHER

Introduction

TABLE OF CONTENTS SECTION INTRODUCTION........................................................................................................................................v STANDARDS, ROPS, FOPS, OPS........................................................................................................... vi NON-APPROVED FIELD PRODUCT CHANGES.................................................................................... vii SAFETY......................................................................................................................................................1 USING HIGH SPEED DISC SAWS SAFELY...................................................APPENDIX TO SECTION 1 CONTROLS AND OPERATION.................................................................................................................2 LUBRICATION AND MAINTENANCE........................................................................................................3

CALIFORNIA Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects and other reproductive harm.

720G/724G/726G Available Literature Operator's Manual (This Manual)..........................................................Part No. 43586AENG Service Manual......................................................................................Part No. 43587AENG 720G Parts Catalog...............................................................................Part No. 44529A 724G Parts Catalog...............................................................................Part No. 43588A 726G Parts Catalog...............................................................................Part No. 45438A Vehicle Moving and Transporting Instructions.......................................Part No. 42403AMUL

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Introduction

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Tigercat 720G/724G/726G Feller Buncher

Tigercat 720G/724G/726G Feller Buncher

Introduction

INTRODUCTION

An Operator's manual, Service manual and a Parts catalog are made available by Tigercat to assist the dealer, customer and operator in becoming familiar with the features of the 720G/724G/726G Feller Buncher.

Serial numbers:720G 724G 726G

7205601 to 7206600 7243101 to 7244000 7265001 to 7266000

The 720G/724G/726G Feller Buncher is designed for harvesting trees, selective felling, thinning and final felling applications in plantations and natural stands.

The operator's manual will assist the operator with the techniques of proper and safe operation of the 720G/724G/726G Feller Buncher. There is also important information regarding the safe operation of the saw head. The service manual contains safety and servicing procedures and a preventive maintenance schedule to assist in repair and to ensure optimum machine performance. For manual part numbers, see the title page in each manual.

Section 1 in both the operator's manual and the service manual contains safety information that must be followed. As well, throughout the rest of the manuals, DANGER, WARNING and CAUTION notices are displayed where necessary, drawing attention to possible hazards when performing certain procedures.

Only trained personnel should be allowed to operate or work on the machine.

The information contained in this manual is current at time of printing. Improvements to the machine are on-going and may not be covered, therefore in these cases contact your Tigercat dealer for the appropriate information.

The phrase 'and up' appearing in this manual after the serial number implies that the related information is current for any machine serial number HIGHER than the serial number preceding the 'and up'.

Tigercat reserves the right to make changes to the machine after this manual release date that may not immediately appear in this manual.

Every effort is made to send out updates on a regular basis. If the machine in question was built after the release date of this manual and there is a discrepancy, call Tigercat service department. The release date appears on the first page.

The Company reserves the right to change information contained herein at any time without prior notice.

Tigercat Industries Inc.

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Introduction

Tigercat 720G/724G/726G Feller Buncher

S.A.E. STANDARDS ROLL-OVER PROTECTION STRUCTURES (ROPS) FALLING OBJECTS PROTECTION STRUCTURES (FOPS) OPERATOR PROTECTION STRUCTURES (OPS) * MODIFICATIONS AND REPAIRS: The integrity of the ROPS, FOPS, OPS structure and its continued ability to provide the level of protection it was designed for could be seriously affected by any modifications to the structure, its mounting or to the chassis to which it is attached.

Tigercat emphasizes that the certification of approval of the ROPS, FOPS, OPS structure will become void if any such modification(s) take place.

Tigercat may officially grant approval for modifications only by: i. Written approval of repairs or modifications signed by the Tigercat Engineering Manager; or ii. Approved modifications officially released by Tigercat.

Both of the above are provided that the work is carried out in the factory approved manner.

Unauthorized modifications and/or repairs made or contributed to by a customer or a Tigercat distributor may result in creating a dangerous situation and therefore the customer or Tigercat distributor will be considered to have assumed the risk involved or be negligent in creating this situation.

Tigercat will not be held responsible for situations arising from having created unauthorized modifications/changes to the structure.

Operator's cabs are designed to ROPS, FOPS, OPS standards so that they will withstand force and absorb energy during a roll-over (ROPS), when resisting the impact of a falling object (FOPS) and minimize the posibility of operator injury from penetrating objects (OPS). When a permanent deflection of the structure occurs, the structure can no longer provide the original designed level of protection and should be replaced. Attempts to straighten the structure, particularly by the application of heat, can reduce still further the structures remaining capability to protect.

The mounting and the frame or chassis to which the cab is attached is considered an integral part of the ROPS, FOPS, OPS and is included in the design, test and certification of the product.

Contact the Tigercat Service department before attempting any modifications or repair to roll-over protective structures.

Tigercat Industries Inc.

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Tigercat 720G/724G/726G Feller Buncher

Introduction

NON-APPROVED FIELD PRODUCT CHANGES

The installation of any unauthorized attachment or changes made of any kind to this Tigercat product could affect the product's ability to perform as originally intended. The product's integrity, stability and it's ability to perform safely could be at serious risk.

IT IS Tigercat POLICY THAT NO CHANGES ARE TO BE MADE TO ITS PRODUCTS INCLUDING DELETIONS OR ADDITIONS OTHER THAN A Tigercat APPROVED OPTION FITTED IN THE FACTORY APPROVED MANNER. Official approval to make changes or install options is only to be undertaken as follows: i) The relevant options for that product must be shown or listed on current Tigercat documentation or literature such as a printed specification sheet, price list, parts manual, or product literature issued by Tigercat. ii) Approved options or product changes authorized in writing by the Tigercat Engineering Manager.

AUTHORIZATION BY ANY OTHER PERSON IS UNACCEPTABLE. Unauthorized changes made or contributed to by a person or organization may result in creating a dangerous situation and therefore the person or organization will be considered to have assumed the risk involved or be negligent in having created this situation.

Weight is an important factor when considering the addition of options or an attachment, Refer to your Tigercat distributor for information on maximum permissible operating weight and the effect the addition of various options may have on your machine.

Tigercat will not be held responsible for any situation that may arise resulting from Non-approved Field Product Changes to its product.

Should Tigercat become involved in a dispute resulting from changes made to the product without proper authorization by Tigercat as stated above, Tigercat will take whatever action is appropriate to protect its interests.

The product warranty policy and the certification on any safety items installed on the modified product will become NULL and VOID if the above policy is not adhered to as specified.

Non-approved product changes also nullify warranties given to Tigercat by its component manufacturers.

Tigercat Industries Inc.

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Introduction

Tigercat 720G/724G/726G Feller Buncher

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Tigercat 720G/724G/726G Feller Buncher SECTION 1 – SAFETY Read and understand this safety section prior to operating any equipment.

Read and understand all manuals for any attachment or accessories.

CONTENTS – SECTION 1

ISSUE 3.0, FEBRUARY,

2015

BACKOVER ACCIDENTS, AVOIDING......................................................................................................1.6 BATTERY DISCONNECT SWITCH........................................................................................................ 1.11 BATTERY SAFETY...................................................................................................................................1.6 BEFORE WELDING................................................................................................................................1.12 BOOM CYLINDER LOCK.......................................................................................................................1.15 CAB EXITS................................................................................................................................................1.8 DIESEL EXHAUST FLUID (DEF)..............................................................................................................1.7 EMERGENCY CAB EXITS........................................................................................................................1.8 FELLING TREES.....................................................................................................................................1.10 FIRE PREVENTION................................................................................................................................1.21 DRY CHEMICAL CLEANUP PROCEDURES.......................................................................................1.25 FIRE PREVENTION GUIDELINES.......................................................................................................1.21 WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED...............................................................1.24 WHAT TO DO TO PREPARE FOR A MACHINE FIRE.........................................................................1.22 WHAT TO DO WHEN A MACHINE FIRE OCCURS.............................................................................1.23 FLUID INJECTION INJURY....................................................................................................................1.17 GENERAL SAFETY PRECAUTIONS.......................................................................................................1.2 GREASE INJECTION INJURY................................................................................................................1.16 HOT FLUIDS AND HOT SURFACES......................................................................................................1.13 LIGHTNING SAFETY AWARENESS LIGHTNING SAFETY...........................................................................................................................1.18 WHAT IS A LIGHTNING STRIKE?........................................................................................................1.18 LIQUID STARING AID...............................................................................................................................1.7 PARKING THE MACHINE.......................................................................................................................1.10 PROTECTIVE CLOTHING........................................................................................................................1.2 SAFETY HAZARDS, OPERATING...........................................................................................................1.5 CAB EXITS.............................................................................................................................................1.8 REFUELING...........................................................................................................................................1.7 SAFETY INTERLOCK SWITCHES........................................................................................................1.8 SAFETY LABELS....................................................................................................................................1.26 SAFETY PRECAUTIONS, GENERAL......................................................................................................1.2 BACKOVER ACCIDENTS......................................................................................................................1.6 PROTECTIVE CLOTHING.....................................................................................................................1.2 VITON SEALS........................................................................................................................................1.5 SAFETY PRECAUTIONS, OPERATING...................................................................................................1.7 LIQUID STARING AID............................................................................................................................1.7 SEAT BELT.............................................................................................................................................1.7 SAFETY PRECAUTIONS, SERVICING.................................................................................................. 1.11 BEFORE TO WELDING.......................................................................................................................1.12 SAFETY SYMBOLS..................................................................................................................................1.2 SEAT BELT................................................................................................................................................1.7 SIGNAL WORDS.......................................................................................................................................1.2 VITON SEALS...........................................................................................................................................1.5 WELDING, PRIOR TO............................................................................................................................1.12

Safety

Tigercat 720G/724G/726G Feller Buncher

GENERAL SAFETY PRECAUTIONS

SAFETY SYMBOLS

Remember that safety is a prime responsibility of all.

To minimize the risks and promote safety at all times, this section of the operator’s manual details a number of safety rules which should always be followed and obeyed.

This safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Always read the operator's manual before operating the machine. Pay close attention to WARNINGS and HAZARD identifications.

The safety alert symbol identifies important safety messages on machines, safety signs, in manuals, or elsewhere. When you see this symbol, be alert to the possibility of personal injury or death.

Follow the instructions in the safety message.

Understanding Signal Words

DANGER

Follow all instructions from safety inspector and supervisors.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

You must be fully trained to operate this piece of equipment. Know the capabilities and the limitations of the equipment. Learn the most efficient operating techniques.

WARNING

Do not let untrained persons operate the machine.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Use recommended protective clothing and safety devices such as gloves, safety boots, safety hat, goggles, and ear protection when necessary.

These safety rules highlight both general and specific measures that the operator should be familiar with and adhere to. More specific measures are illustrated with pictograms which may also be attached to the machine in locations pertinent to their respective message. Keep safety labels in good condition. Repair or replace damaged labels.

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Tigercat 720G/724G/726G Feller Buncher

Safety Always use the handrails and steps provided when mounting and dismounting from the machine.

KEEP BACK 150 m (500 ft)

Do not jump off the machine at any time.

When approaching an operating machine on foot, stay at least 150 m (500 ft) away until the operator recognizes your presence. Make sure that all equipment has been shut down before advancing to the machine.

Do not try to climb onto or off a moving machine.

Do not use the seat armrest or joystick as handles when entering or leaving the cab.

Do not use the machine foot controls as a step.

DANGER ROTATING SAW

When mounting or dismounting the machine always use the three point technique. Use one hand with two feet or two hands with one foot.

The safety of persons outside the cab is the responsibility of the machine operator

WARNING It is not recommended to walk on machine surfaces that are not designated walking areas.

No attempt should be made to walk on angled steel surfaces or surfaces that are irregular in shape.

Walking surfaces on the machine must be covered with anti-slip materials to provide a safe foot hold and prevent slipping.

Wear a suitable hearing protective device such as earmuffs or earplugs to protect against noise.

Prolonged exposure to loud noise can cause impairment or loss of hearing.

These anti-slip surfaces should be maintained on a regular basis. If the surface shows signs of wear, the anti-slip material must be replaced immediately.

WARNING Do not walk on machine surfaces with steel cleated foot wear. Steel cleats on steel surfaces are slippery and do not provide a safe foot hold.

1.3

Safety

Tigercat 720G/724G/726G Feller Buncher

Avoid mounting or dismounting the machine in areas with slippery surfaces. Dry, deice, clean up or cover slippery surfaces with an anti-slip material before mounting or dismounting the machine.

Keep a first aid kit in an easily accessible location on the vehicle at all times.

Working with oil Direct contact with oil implies a risk of skin complaints (example: eczema). Strict hygiene should always be observed.

To reduce the risk of fire, machines should be completely cleaned of debris at least daily, particularly around the engine exhaust components. Hydraulic oil leaks, excess grease, fuel and oil accumulation (including spillage) should be eliminated immediately, always turn engine off before cleaning machine.

Some advice which should be observed:

Maintain a clean cab interior, clear away trash or debris.

•

Oils used in this machine may be hot enough to cause serious burns.

•

Avoid contact with oil, particularly heated oil.

•

Oil on the skin should be washed off immediately with soap and water.

•

Wear protective gloves. Hands should be clean before putting on gloves. Apply protective cream to the hands to make washing easier.

•

Don't put oily rags in your pockets.

•

Oil soiled clothing should be changed as soon as possible.

•

Always keep an extra overall handy, but not in the machine where it can become dirty.

•

Cuts and abrasions must be attended to immediately. Clean them and apply first-aid.

•

Avoid breathing in oil fumes.

•

Wash hands and arms frequently (example: at each meal break or as often as possible).

•

Any cloths, residue and gloves must be safely discarded after use.

Machine should be washed completely at every major service.

Inspect the machine daily for signs of damage or unusual wear to structures.

Check for fluid leaks, or faulty operation. Repair or replace malfunctioning parts and systems immediately.

Check windows and door guards for damage.

Check protective windows for cracks, a damaged window has reduced strength to stop flying objects. All damaged windows must be replaced with original equipment.

Check windows for scratching, crazing and cloudiness that could impair clear visibility all around the machine.

Do not operate the machine with any defective or inoperable components.

Check all fluid levels.

Do not operate the machine with any of the exhaust system, safety covers, or other devices removed.

1.4

Tigercat 720G/724G/726G Feller Buncher Read, understand and follow all general safety precautions specified by attachment manufacturer.

overhanging electrical power lines are present.

Serious injury or death by electrocution can result if the machine or any of its attachments are not kept a safe distance from these lines.

Safety Hazards – Viton Seals O-rings and other seals manufactured of Viton material (fluorine rubber) produce a highly corrosive acid (Hydrofluoric) when subjected to temperatures above 315°C (600°F).

Maintain a distance of 3 m (10 ft) between the machine or boom and any power line carrying up to 50,000 volts or less plus 10 mm (½ in.) for each additional 1,000 volts above the 50,000 volt level.

This contamination can have extreme consequences on human tissue since it is almost impossible to remove after contact.

If State/Provincial, local or job site regulations require even greater safety distances than stated above, adhere strictly to these regulations for your own protection.

The following procedures are recommended when inspecting equipment that has been subjected to high temperatures such as fire: •

Visually inspect any seals or gaskets which have suffered from heat; they will appear black and sticky.

•

If these are found, Do Not Touch!!!

•

Determine the material composition of any seals or gaskets. If fluoro-elastomer seals (Viton, fluorel, or tecmoflon) have been used, the affected area must be decontaminated before undertaking further work. Natural rubber and nitrile materials are not hazardous.

•

Disposable heavy duty gloves (neoprene) must be worn and the affected area decontaminated by washing thoroughly with limewater (Calcium Hydroxide solution).

•

Any cloths, residue and gloves must be safely discarded after use.

Safety

If the machine must be transported, make sure that it is adequately secured to the transporting vehicle. Refer to TRANSPORTING instructions in SECTION 2 of the OPERATOR'S MANUAL. Even though the brakes are fully engaged, block the wheels to prevent movement during transport.

Install the articulation lock bar when ever the machine is to be transported.

Stopping the engine immediately after it has been working under load can result in overheating and premature wear of the engine components.

Reduce engine speed to LOW IDLE and let run for approximately five minutes to allow gradual dissipation of heat and also to reduce turbo speed. This will also prevent loss of coolant by after boil and possible hot spot damage to the engine.

NOTE: Burning discarded items is not recommended except in an approved incineration process where the dangerous products are treated by alkaline scrubbing.

Safety Hazards – Operating

Be aware when performing service and maintenance tasks that surfaces and grab handles in and around the engine and cooling system may become very hot when the engine has been running. Contact with hot surfaces may cause injury.

Maintain a charged fire extinguisher on the vehicle at all times and KNOW HOW TO USE IT. Do not carry passengers either in the cab or anywhere else on the machine. The vehicle is provided and approved with seating for the operator only.

Comply with instructions in this manual and also your company’s regulations for the operation of this machine.

Do not allow anyone to operate the machine who may not be physically fit or who may be under the influence of alcohol or drugs.

WARNING

When moving the machine, watch that enough clearance is available on both sides and above the machine or any of its attachments. Extra clearance may be required particularly where the ground is uneven.

Engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Approach with extreme caution any area where 1.5

Safety

Tigercat 720G/724G/726G Feller Buncher

WARNING

Avoid Injury from Backover Accidents Before moving machine, be sure all persons are clear of the area.

Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Wash hands after handling.

Always be alert for bystanders moving into the work area. Use horn to warn bystanders before moving the machine.

When using a signal person, keep the person in view at all times. Always be sure the signal person is clear before backing up.

Read, understand and follow all general safety precautions specified by attachment manufacturer.

To avoid backover accidents:

If acid is accidentally splashed into your eyes, flush immediately with clean water and get medical attention.

Do not attempt to charge a frozen battery; it can explode.

When servicing the electrical system, turn OFF the battery disconnect switch before removing the battery compartment cover. Remove the battery cables from the batteries disconnecting the negative (-) cables first. Perform the service work, then attach the battery cables reconnecting the positive (+) cables first.

Connect ground terminal last when reconnecting.

Do not short out battery terminals for any reason.

Serious burns or an explosion can result.

CAUTION Lead-acid batteries contain sulfuric acid which can severely damage eyes or skin on contact. Always wear a safety face shield, rubber gloves and protective clothing to reduce risk of accidents.

Lead-acid batteries produce flammable and explosive gasses. Keep arcs, sparks, open flames and lighted tobacco a safe distance from the batteries.

1.6

•

Always look around before you back up. Be sure that everyone is clear.

•

Keep motion warning alarm in working condition. The motion warning alarm must sound when the machine is moving in forward or reverse.

•

Use a signal person when backing up if view is obstructed. Always keep the signal person in view.

•

Learn the meaning of all flags, signs and markings on the job site and who is responsible for signalling.

•

Keep windows, mirrors and lights in good condition.

•

Dust, heavy rain, fog, snow etc. can reduce visibility. As visibility decreases, reduce speed and use proper lighting.

Tigercat 720G/724G/726G Feller Buncher

Safety Start the engine by following the instructions in this manual. Refer to OPERATING MACHINE in SECTION 2 of the OPERATOR’S MANUAL.

OPERATING SAFETY PRECAUTIONS

WARNING • EXPLOSION HAZARD. • DO NOT USE ETHER. • ENGINE EQUIPPED WITH HEATER STARTING AID. • USE OF ETHER COULD RESULT IN DEATH OR SERIOUS INJURY.

Turn engine off when refueling – DO NOT refuel the engine while smoking or near open flame or sparks.

36782BENG R0

Never use a liquid staring aid to start an engine.

Attach a grounding strap to an unpainted metal surface on the machine if the refueling tank or nozzle is so equipped.

Before moving the machine to the work site, check to ensure that all doors, panels, and access covers are installed properly and secured.

FUEL NOZZLE HOLDING BRACKET 726G-003

Before climbing on the machine to refuel, secure the fuel nozzle in the nozzle holding bracket.

Once safely on the machine remove the nozzle and proceed to refuel. When refueling is complete place the nozzle back in the holding bracket before climbing off the machine.

41581AUNI R0

Diesel Exhaust Fluid (DEF) may irritate eyes or skin. Do not get in eyes. Do not get on skin.

First Aid treatment: DEF Contains Urea. If swallowed call a Poison Control Center or doctor immediately. Do not induce vomiting. If in eyes rinse with water for 15 minutes. If on skin rinse well with water. If irritation persists seek medical treatment.

Check that no other personnel have moved into a hazardous area before starting the machine.

Sound the machine horn before starting the machine.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) after treatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

The operator's seat is equipped with lap and shoulder harness belts. Use both of these restraint system at all times when operating the machine.

1.7

Safety

Tigercat 720G/724G/726G Feller Buncher

CAB EXITS

M724E-020

SWITCH

There are 3 ways to exit the cab in case of an emergency.

1. Left door, this is also the main point of entry and is the only door that should be used under normal operating conditions to enter or leave the cab. This door is also equipped with a SAFETY INTERLOCK SWITCH. See SAFETY INTERLOCK SWITCH ON DOORS in THIS SECTION.

ACTUATOR

2. Right door, should be used for emergency exits only. Do not use this door to routinely enter or leave the cab. This door is also equipped with a SAFETY INTERLOCK SWITCH. ALWAYS turn engine off before using the right door exit.

INTERLOCK SWITCH (LH DOOR SHOWN) SAFETY INTERLOCK SWITCHES ON DOORS: Both doors are equipped with safety interlock switches to prevent the machine from being operated while either of the doors are open (interlock system is shut off).

3. Escape hatch, this is a third cab exit for use if the cab door exits become blocked.

This hatch is not equipped with a safety interlock switch and therefore when left open will not deactivate the pilot controls in the cab. ALWAYS turn engine off before using the escape hatch exit.

CAUTION Safety interlock switches DO NOT lock out the steering function on machines equipped with a steering wheel.

It is important that the operator of the machine be familiar with these emergency exits and how to use them.

CAUTION DO NOT use the steering joystick to assist entering or leaving the cab.

All three exits should be checked to make sure that they are operational and will function in an emergency. The safety interlock mechanism on the cab doors and escape hatch retaining mechanisms must not be tampered with or defeated.

NOTE: The engine can be started but the machine functions cannot be operated with a door open.

To operate:

IMPORTANT! Unlock both doors before operating machine to allow opening from the outside in case of an emergency. Make sure that the doors are operational, open the doors twice, once using the exterior handle and once using the interior latch handle.

Close both doors and press the INTERLOCK RESET switch .

CAUTION All functions on the machine can now be operated, either as intended or by accidentally touching them.

For additional information, refer to EMERGENCY EXITS in SECTION 2 of the OPERATOR'S MANUAL.

Once the safety interlock system has been activated, the safety of both the operator and all persons outside the cab becomes the responsibility of the operator.

The door safety interlock switches and the pilot reset switch are a safety feature and their function must not be defeated in any way.

1.8

Tigercat 720G/724G/726G Feller Buncher

Safety

Machine operations should only be performed from the operator's seat.

Secure loose items in the cab.

Prior to commencing work, check all equipment controls to ensure that the machine responds correctly.

Make sure that all safety screens and guards including the skylight are installed and properly secured.

Maintain a safe operating distance between the machine and other personnel. Never operate the boom or attachment over the heads of bystanders.

Do not open an escape hatch or the cab doors to increase ventilation when operating the machine.

Keep the cab doors closed when driving or steering the machine to prevent accidental entry of branches and debris into the cab.

Do not turn on saw blade until machine is at cutting site.

Never travel near co-workers or other pieces of equipment with cutter turning.

Keep the cab doors closed and use seat belt when driving or steering the machine to prevent being thrown from the operator's cab.

Do not allow people or other pieces of equipment near the machine when saw blade in running or during operation.

Never use the parking brake to slow down or stop the machine except in an emergency.

Use only prearranged and approved signalling practices.

Keep the parking brake properly adjusted at all times.

Operate the machine only from a seated position in the operator’s seat.

Keep service brakes properly adjusted and check for proper operation of the service brake. Refer to SERVICE BRAKE – CHECKING BRAKE AND ACCUMULATOR FOR PROPER OPERATION in Section 3.

Watch for ground hazards such as metal debris, wire fencing or rocks.

When traveling position attachment and boom accordingly so as not to impair vision.

Always rest the attachment on the ground when operation is stopped, regardless if the engine is running or shut off.

If vision is limited by dust, smoke, fog, rain or snow, stop the machine until visibility is restored.

CAUTION Do not open cab doors or window screens when machine is on a slope. The doors and screens are heavy and could swing out with considerable force.

When working on slopes, travel straight up or down the slope to prevent roll-over.

When the engine is running, DO NOT allow anyone in areas of the machine where they may be crushed by moving components.

•

Do not run engine when persons are on steps or in doorway area.

•

Serious injury or death could result from crushing.

NEVER travel across a STEEP slope or side hill:

1.9

•

If you travel across a MODERATE slope, NEVER make an uphill turn as this could cause a tip-over situation.

•

As logs are added to the accumulator pocket the handling and the stability of the machine will change.

•

To avoid tip over, keep the felling head as low as possible to maintain a low center of gravity.

Safety •

Always be prepared to dump the load in case of an emergency.

•

Do not overload the machine as this can create an unstable condition and cause a rollover.

Tigercat 720G/724G/726G Feller Buncher Never use this machine to clear a logging deck on a new tract of timber when the rest of the equipment and operator's are also moving in.

Pre-plan to clear decks in advance before other equipment arrives.

Never work alone. Regularly inform other crew members of your intentions, location and length of time to perform duties.

FELLING TREES Pieces of wood, debris from the ground and even teeth separating from the saw blade become potentially dangerous missiles when thrown from these machines.

Stop the saw blade before leaving the cutting area.

NOTE: The saw blade will continue to free wheel for several minutes after the saw switch has been turned OFF.

Inspect saw teeth, tooth retaining bolts, saw disc and felling head assembly.

Ensure that all saw tooth retaining bolts are at correct torque value.

To stop the blade from rotating, CAREFULLY lower the saw blade onto a stump. This should be done gently to prevent unnecessary loading of the saw blade, saw housing and bearings. Park machine at least 15 m (50 ft) away from other equipment and in a cleared area. In the event of a fire, this distance will minimize the chance of the fire spreading to other equipment.

Replace all worn saw teeth or rotate worn teeth to align unused cutting tips.

Always replace saw tooth retaining bolts when replacing saw teeth.

Inspect saw disc for stress cracks and that saw disc does not wobble due to worn saw shaft bearings.

Before leaving operator's cab, apply the parking brake and lower the attachment onto the ground.

Never start the machine if the saw blade has missing teeth, teeth retaining bolts or a bent saw disc.

If out of the operator's cab for an extended period shut the machine off.

Shut down machine immediately if vibration occurs during cutting.

When parking the machine: • Park on level ground.

Check that the saw discharge area is clear and undamaged.

•

Do not park on a hillside or incline.

When moving from tree to tree with the saw blade turning, take care not to make contact with other vegetation or debris.

•

Lower attachment onto level ground.

•

Engage the parking brake.

•

Do not over load felling head.

Stop the engine and release pilot system pressure by performing the following steps:

Work within your operating skills, do not attempt to cut down a tree that is too large for the felling head.

1. Close both doors. Turn key switch to ON position. Do not start the engine. Press pilot reset switch.

Complete either steps 2A or 2B.

Operate so that the chip discharge area of the felling head is not directed at people, livestock, buildings or other machines.

2A. Fully apply brake foot pedal 50 times or more.

When making the cut, properly position felling head in front of tree and have saw blade running at full rpm.

2B. Turn rear differential switch ON and hold front differential lock switch ON for 30 seconds. While waiting, pump brake foot pedal at least 10 times.

Always know and control the direction the tree will fall to prevent injury to co-workers or damage other vehicles.

3. Pressure may remain in the system after completing all of the above steps.

Use caution when loosening hydraulic connections.

When backing away from a cut, watch out for obstacles in your path.

Always travel with felling head as close to the ground as possible, never elevate the felling head unless necessary.

1.10

For additional information, refer to RELEASE PILOT SYSTEM PRESSURE in SECTION 5 of the SERVICE MANUAL.

Tigercat 720G/724G/726G Feller Buncher

Safety

SERVICING SAFETY PRECAUTIONS

724E-112

•

BATTERY DISCONNECT SWITCH

Conduct maintenance inspections at least as frequently as recommended in SECTION 3 of THIS MANUAL.

Turn the battery disconnect switch off if the machine is to be parked for an extended period of time (example – overnight).

When servicing or repairing equipment, shut the engine down and turn OFF the battery disconnect switch. Some wiring on the machine is live even when the battery disconnect switch is off. When servicing the electrical system, turn OFF the battery disconnect switch, remove the battery cables from the batteries disconnecting the negative (-) cables first. Perform the service work, then attach the battery cables reconnecting the positive (+) cables first and turn the battery disconnect switch ON.

NOTE: This machine is equipped with an After Run/Accessory Relay which delays by 90 seconds the power disconnect to engine related fuses and relays. Whenever the engine is stopped all DEF solution is pumped back to tank before the engine power system is turned off. This process takes approximately 90 seconds. Refer to SELECTIVE CATALYTIC REDUCTION SYSTEM in SECTION 3 of THIS MANUAL for more information.

When traveling on public roads, use accessory lights (when installed) and other cautionary devices to provide operators of other vehicles warning of your approach. Ensure your machine meets all regulatory requirements.

Install a DO NOT START ENGINE sign on the operator’s cab door and in the engine compartment when making repairs to the machine.

When transporting the machine watch that enough clearance is available on both sides and above the machine or any of its attachments to avoid contact with power or telephone lines, bridge structures, etc.

Before transporting the machine check to ensure that all doors, panels and access covers are installed properly and secured.

Before performing maintenance or repair work on any equipment, consult the manufacturer’s instruction manual and follow recommended procedures.

The charge air cooler, radiator and the engine cooling system should be cleaned and serviced at least daily to maintain moderate engine temperatures.

WARNING This machine is equipped with a reversible cooling fan. Exercise care when working in this area with the engine running.

If the fan switch in the cab is in the AUTO position, the fan could turn ON and/or go into REVERSE mode without warning.

1.11

Safety

Tigercat 720G/724G/726G Feller Buncher

PRIOR TO WELDING Prior to welding on any part of the machine, the repair area should be cleaned and a fire extinguisher placed nearby. Remove all paint from the area to be welded. Heated paint gives off toxic fumes.

CAB EXPANSION MODULE CONNECTOR

• Place the welding machine ground clamp as close to the work area as possible. Stray current can pass through bearings, especially the swing bearing.

M726E-123

724E-112

INSIDE RIGHT CAB DOOR

CHASSIS EXPANSION MODULE CONNECTOR

BATTERY DISCONNECT SWITCH

• Turn Battery Disconnect Switch OFF. • Disconnect the battery cables from the batteries, negative cables first. When service is completed attach the battery cables reconnecting the positive (+) cables first and turn the battery disconnect switch ON.

724E-099

• Disconnect the Expansion Module multi-pin connectors behind the cab and inside the RH cab door.

Due to the sensitive electronics on this machine, the following additional precautions must be taken:

COMPUTER DISPLAY CONNECTORS

ELECTRONIC CONTROL UNIT

724G-019

BEHIND CONTROL PANEL

• Disconnect the computer display in the cab by unplugging the two connectors from the back.

You will need to remove the four control panel mounting bolts to gain access.

CHASSIS MULTI-PIN CONNECTOR 724G-010

BEHIND CAB RIGHT SIDE

SUPPLY MODULE CONNECTOR

DISCONNECT ECU HARNESS

• Disconnect the engine electronic control unit (ECU) by unplugging the chassis multi-pin connector from the left side of the engine.

724G-007

REAR SERVICE COMPARTMENT

• Disconnect the DEF Supply Module by unplugging the multi-pin connector.

1.12

Tigercat 720G/724G/726G Feller Buncher

Safety

• When welding is complete, reconnect all connectors. Attach the battery cables, reconnecting the positive (+) cables first. Turn the battery disconnect switch ON.

WARNING Diesel fuel or hydraulic oil under pressure can penetrate the skin and cause serious personal injury, blindness, or death. If any fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar with treating this type of injury.

Explosive release of fluids from pressurized cooling system can cause serious burns.

Turn engine off. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

Never use bare hand to check for fluid leaks.

Do not change any pressure or relief setting unless authorized instruction has been obtained.

Fluid leaks under pressure may not be visible.

When searching for leaks, wear work gloves and use a wrench or piece of wood to move hydraulic hoses. Do not grab hold of hydraulic hoses. Wear safety goggles for eye protection.

Use the proper tool for the job. Repair or replace worn or damaged tools including lifting equipment immediately.

WARNING

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS! Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower the attachment to the ground, stop engine and relieve trapped pressure from pilot system and brake accumulators before performing work on components, or disconnecting any hoses. For information on relieving pressure, refer to PARKING THE MACHINE in THIS SECTION.

1.13

•

Before servicing the machine, allow the engine cooling system, fuel system, exhaust system, hydraulic system and machine surfaces to cool down.

•

Use a thermometer to check surface and system temperatures to ensure it is safe to begin service work.

•

DO NOT begin service work until the surface or system temperature has cooled down to below 38°C (100°F)!

Safety

Tigercat 720G/724G/726G Feller Buncher

Keep your hands, feet, head, and loose clothing away from power driven parts. Tie long hair behind your head. Remove rings and other jewelry to prevent electrical shorts and entanglement in moving parts.

CAUTION Do not open cab doors or window screens when machine is on a slope. The doors and screens are heavy and could swing out with considerable force.

WARNING Failure to follow all of the above instructions could result in serious injury or death from crushing.

CAUTION Always be aware of machine pinch points that could cause injury. Never place body parts within the range of motion of the working parts of the machine.

FRONT CHASSIS

The lower access panels are NOT HINGED or permanently attached to the machine, but are held in place by the UPPER DOORS. Therefore they can fall during the process of removing them from the machine. Once the UPPER DOOR is opened the LOWER PANEL is not fully supported and it is not safe to apply any weight or pressure to the panel, as it may fall out of the remaining supports.

Do not use these LOWER PANELS as hand grips, when servicing the machine.

REAR CHASSIS

RETAINING PIN

LYNCH PIN LOWER PANELS

LOCK BAR

726D-039

LOCK BAR IN LOCKED POSITION

To prevent accidental articulation of the machine and injury when working in the center joint area, install the frame articulation lock bar between the frames and hold in place with the lynch pins provided.

Never stand under an object supported with hydraulics. Always use safety stands or a locking device.

724G-002

LOWER PANELS

WARNING DO NOT work below or behind a machine that is parked on a grade.

WARNING Always allow the saw blade to come to a complete stop before approaching attachment to make adjustments.

724G-004

1.14

Tigercat 720G/724G/726G Feller Buncher

Safety

LIFT BOOM CYLINDER LOCK

LIFT BOOM

Before performing work under the attachment or lift boom, ensure that the attachment is firmly supported on level ground, on solid stands or, install lift boom cylinder lock.

CYLINDER

'T' HANDLE

724E-073

LIFT BOOM CYLINDER LOCK IN LOCK POSITION

Completely raise lift boom and place lock over one of the two cylinder rods with the open side facing down and wide end against the cylinder gland. Install 'T' handle retaining bolt through center hole.

Do not stand under the boom or attachment while doing this. Do not damage the piston rod when installing the boom lift lock. Turn off the engine, turn key back to RUN position, press the INTERLOCK RESET switch to activate the pilot oil system.

CYLINDER LOCK

SLOWLY lower the boom until the boom lift lock is securely in place.

INTERLOCK RESET SWITCH

724G-003

CYLINDER LOCK STORAGE

The lift boom cylinder lock is stored on the inside of the rear service compartment door.

M724E-044

CONTROL PANEL

To remove the boom lift lock, start the engine, press INTERLOCK RESET switch and raise the boom completely. Without placing yourself under the boom or attachment, remove the 'T' handle retainer bolt, remove the boom lift lock and reinstall it on the inside of the rear service compartment door.

WARNING Always install lift boom lock before working on or around machine with boom raised.

• Always install 'T' handle retainer bolt • Use only to support boom and attachment.

1.15

Safety

Tigercat 720G/724G/726G Feller Buncher GREASE INJECTION INJURY WHEN USING PNEUMATIC GREASE GUNS Pneumatic grease guns can deliver grease at pressures from 17–400 bar (246–5801 psi).

It takes less than 7 bar (100 psi) to inject a substance through human skin.

ALWAYS get professional medical treatment immediately after any type of injection injury.

Provide the physician with information on the type of grease, the pressure setting of the gun, and similar details.

If the engine is running inside a building, ensure that sufficient ventilation is available to prevent a buildup of toxic exhaust fumes. Run the engine only when it is necessary for testing or adjustments.

The amount of fluid injected, type of fluid (or material), pressure at which it was injected, and the elapsed time between injection and surgery all influence the chances of successful treatment for this type of serious injury.

Work in a ventilated area. If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove toxic exhaust fumes.

Prior to using a high pressure pneumatic grease gun perform the following:

If you don't have an exhaust pipe extension, either work outside, or open the shop doors.

Dispose of fluids properly.

Do not pour fluids into the ground, stream, pond or lake.

Before draining any fluids, know the proper way to dispose of them.

1.16

•

All operators of high pressure pneumatic grease guns MUST be trained in the hazards of its operations and the treatment for such injuries.

•

DO NOT OPERATE a high pressure pneumatic grease gun unless you have been trained in the proper operation and are aware of all safety precautions of such a tool.

•

Wear protective clothing such as gloves, safety hat and safety glasses.

•

Inspect all parts of the grease gun for wear and tear and replace all worn or damaged parts.

•

Ensure that protective shrouds are installed on all grease gun nozzles as safety devices.

•

Remove dirt and grease from grease fittings prior to greasing.

•

Replace any defective grease fittings on equipment with new fittings immediately.

•

When badly positioned fittings are identified, replace them with angled or swivel fittings for easier access.

Tigercat 720G/724G/726G Feller Buncher FLUID INJECTION INJURY

Safety In the event of any suspected fluid injection injury:

Hydraulic and diesel fuel systems on forestry machines operate at very high pressures, often 207 bar (3000 psi) and above. If a loose connection or a defect in a hose should occur, a fine, high velocity stream of fluid will result.

Even for systems pressurized to as little as 7 bar (100 psi), this fluid stream can penetrate human skin as if it were a hypodermic needle.

•

Report the injury to your supervisor immediately.

•

Seek professional medical attention immediately.

As always the best defence against suffering the effects of fluid injection is to prevent the accident from occurring in the first place.

When searching for possible fluid leaks:

Initially, an accidental fluid injection beneath the skin may only produce a slight stinging sensation.

There is a danger that you will tend to ignore this, thinking that it will get better with time. Most often, it does not! Within a very short time the wound may begin to throb painfully, indicating that tissue damage has already begun.

Similarly fluid injected directly into a blood vessel can spread rapidly through your circulatory system. The human body has little ability to purge injected fluid.

•

Never search for leaks with your bare hands.

Always wear thick protective gloves.

•

Be sure to wear safety goggles for eye protection.

•

Keep all body parts well away from the area being investigated for leaks.

•

Use the end of a long piece of wood to move hoses or other obstacles.

•

Place the end of a long piece of wood in the suspected path of any fluid stream. Never use any part of your body.

•

Recognize that the source of the leak and the fluid streaming from it may be very small and not easily visible. You may only be able to see the fluid that accumulates as a result of the fluid stream.

WARNING Diesel fuel or hydraulic oil under pressure can penetrate the skin and could result in death or serious injury. If any fluid is injected under the skin, a medical doctor familiar with the treatment of this type of injury must surgically remove it within a few hours.

When performing any service work:

Time becomes critical as tissue damage progresses rapidly. The longer you delay getting professional medical attention, the more damage can occur.

Although fluid injection accidents are rare, the resulting injury has on occasion required the amputation of a finger, a hand or in some cases the entire limb. The longer the delay in getting professional medical aid, the further up the limb the tissue damage can spread. An injury of this type can become very serious or even fatal if not dealt with promptly and properly.

1.17

•

Stop the engine and relieve all diesel fuel or hydraulic pressure before disconnecting any lines or otherwise working on the system.

•

Never grab any hydraulic or diesel fuel connectors or hoses when they are subjected to pressure.

•

Always ensure that hoses are rated for the pressures to which they will be subjected.

•

Never use any hoses that you suspect could be defective.

Safety

Tigercat 720G/724G/726G Feller Buncher LIGHTNING SAFETY

LIGHTNING SAFETY AWARENESS

In spite of the popular myth that being struck by lightning is an unlikely event, the facts show that lightning strikes occur frequently. As a result loggers are at high risk because their work is outdoors and close to known strike points such as tall trees and heavy equipment.

Loggers can increase their chances of avoiding a lightning strike by following a few simple safety practices.

1. Designate a member of your crew to

• Monitor daily weather forecasts

WHAT IS A LIGHTNING STRIKE?

• Observe local weather conditions

Lightning is a discharge of the electricity produced by a thunderstorm. As the thunderstorm develops, many small particles of ice within the storm clouds bump together. These collisions create a positive charge at the top of a cloud and a negative charge at the bottom. As this continues a second positive charge builds up on the ground beneath the cloud, concentrated around high objects such as hills, trees, buildings, equipment and even people.

• Alert all other members of the crew when a possible lightning threat develops.

2. Don’t start or continue any work that cannot be stopped immediately, when a storm moves nearby.

3. Anticipate a high-risk situation and take action early by moving to a low-risk location. Do not hesitate. If there is lightning, you are in danger.

When the difference between the electrical charge in the cloud and on the ground becomes great enough to overcome the resistance of the insulating air between them, an electrical current flows instantly. This is a lightning strike.

4. Obey the rule – If you see lightning, Flee. If you hear thunder, Clear.

5. Do not follow the now obsolete guideline to take shelter when the time between seeing lightning and hearing thunder is 30 seconds or less. This does not provide sufficient time to ensure safety. Always follow step 4.

The electrical potential in a lightning strike can be as much as 100 million volts. Lightning strikes can occur over very large distances, even as much as 60 km (37 miles). Lightning travels both in front of and behind a thunderstorm and so strikes happen even when rain has not started or has stopped.

Lightning can hit in the same place, many times and often spreads out over 18 m (60 feet) within the soil around the strike point.

6. Remain in your safe location for 30 minutes after the last sight of lightning or the last sound of thunder.

The safest location during lightning activity is inside a fully enclosed, substantially constructed building, a house, office, school, shopping area, etc. These are the safest because of the electrical wiring and plumbing that they contain. Should lightning strike, the electrical current will travel through the wiring or plumbing into the ground.

When such a building is nearby, always seek shelter there first.

Thunder always accompanies lightning. When lightning occurs, the air through which it travels is instantaneously heated to a temperature more than 28,000°C (50,000°F). The air expands rapidly due to this heating, then quickly contracts as it cools. It is this contracting shock wave that we hear as thunder.

In many areas of the world, lightning strikes are second only to flooding as the greatest cause of storm related deaths and injuries. Although only 10% of lightning strike victims are killed, virtually all from cardiac or respiratory arrest, over 70% of those that survive suffer severe, life-long injury and disability. The symptoms of a lightning strike include memory loss, fatigue, chronic pain, dizziness, sleeping difficulty and the inability to complete several tasks at one time.

1.18

Tigercat 720G/724G/726G Feller Buncher

Safety WHAT TO DO IF YOU ARE OUTSIDE AND SEE LIGHTNING OR HEAR THUNDER.

Unfortunately loggers do not often work close to buildings and therefore other alternatives need to be considered.

If you can, get inside.

Sheds, weather shelters, hunting blinds, tents and other partially open or small structures are not safe against lightning strikes as they lack the electrically grounded components of larger buildings. They are intended for sun or rain protection only. Do not seek shelter from lightning strikes inside these structures.

1. Run to the nearest building, motor vehicle or fully enclosed ROPS equipment cab immediately. Being anywhere outside is not safe.

2. If inside a building:

The second safest location during lightning activity is inside a fully enclosed car, van, truck or bus with a metal roof and metal sides. The electrical energy of a lightning strike to these vehicles is carried to ground by the conducting outer metal surfaces. This is called the skin effect.

Do not seek safety from lightning strikes in vehicles with fiberglass or plastic body shells or in convertible top vehicles. None of these are safe, as they do not offer skin effect lightning protection.

•

Don’t watch the lightning storm from open windows or doorways. Stay in inner rooms.

•

Stay well away from corded telephones, electrical appliances, lighting fixtures, radio microphones, electrical sockets and plumbing pipes and fixtures.

3. If inside a motor vehicle or fully enclosed ROPS equipment cab:

Heavy forestry equipment such as a skidder, loader, feller buncher, forwarder, etc. with a fully enclosed rollover protective structure (ROPS) cab take advantage of the skin effect and are therefore safe in electrical storms.

However machines with a rollover canopy only are not safe against lightning strikes as they are open to electrically conductive rainwater and do not benefit from the skin effect. Operators of this equipment must abandon their machines and get to a safer location before lightning strikes.

Note that the rubber tires on motor vehicles and heavy equipment do not increase safety from lightning strikes. Lightning has already travelled a great distance through the air to strike the vehicle.

In comparison a few inches of rubber in a tire offers absolutely no additional insulation.

1.19

•

Under no circumstances whatsoever step outside of the vehicle or off the equipment to move to another shelter. Very dangerous electrical pathways to ground may go through you.

•

Shut down all operation, turn off the engine, close all doors and raise all windows.

•

Sit squarely in the seat with your hands in your lap and your feet flat on the floor mat.

•

Do not touch any metallic objects referenced to the outside of the vehicle.

Do not touch any door and window handles, control levers, foot pedals, steering wheels, cab interior walls and any other inside to outside metal objects.

•

Do not touch any radio or telephone connected to an outside antenna.

Safety If you are caught outside and have no where else to go.

1. Avoid wide-open areas where you project above the surrounding landscape.

2. Seek shelter in a low place, such as a ditch, ravine, valley, canyon or cave.

3. Get away from open water such as ponds or streams.

4. Do not take shelter under any isolated tall trees or small groups of trees.

5. Seek shelter amongst the dense, thick growth of the shortest trees.

6. Avoid entering any small enclosures or shelters.

7. Do not seek shelter under any motor vehicle or heavy equipment.

8. Keep clear of any materials that can conduct electricity such as wire fences and gates, metal pipes, poles, rails and tools.

9. Stay at least 15 m (50 ft) away from metal objects such as a fuel tank, a vehicle or machinery without a cab, motorcycle, ATV, etc.

10. Stay at least 5 m (16 ft) apart from any other members of a group so that lightning won’t travel between you.

11. Do not use the telephone except for emergencies.

Tigercat 720G/724G/726G Feller Buncher What to do if you feel your skin tingling, your hair stands on end, light metal objects vibrate or you hear a crackling sound.

1. Lightning is probably about to strike. You only have a few seconds to act.

2. Put your feet together. Crouch down like in a baseball catcher’s position. Hold your head down. Cover your ears to protect them against the noise of the thunder.

3. Do not lie flat on the ground. By touching as little of the ground as possible, the lightning may not move across the ground to you.

What to do if a co-worker has been struck by lightning.

1. The victim does not carry any electrical charge. There is no danger to anyone helping this person. You can touch him or her immediately.

2. Call your local emergency response telephone number immediately.

3. If the victim has no pulse, their heart has stopped or they have stopped breathing, start cardiopulmonary resuscitation (CPR) or mouth -to-mouth resuscitation immediately. Use a portable defibrillator if one is available.

4. Be careful about staying in the storm to take care of the victim. You can get hit by lightning too. If you can, move the victim to a building as soon as possible.

To further increase your awareness about lightning safety, see the following web sites.

National Weather Service Lightning Safety http://www.lightningsafety.noaa.gov National Lightning Safety Institute http://www.lightningsafety.com

1.20

Tigercat 720G/724G/726G Feller Buncher

FIRE PREVENTION

When working in a forest environment, it is impossible to prevent combustible debris from collecting in tight corners of the machine. This debris, in itself, may cause a fire; however, when mixed with fuel, oil or grease in a hot or confined place, the danger of fire is greatly increased.

The following fire prevention guidelines should be used to supplement the operator’s fire prevention efforts. In no case should the guidelines be used, or assumed, as replacements for diligent operator efforts at preventing fires.

The following guidelines will help to keep your equipment up and running efficiently and keep the risk of fire to a minimum.

1. Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. 2. Remove debris and blow out dust regularly from the air intake doors, engine radiator and charge air cooler, hydraulic oil cooler, diesel fuel cooler and air conditioning condenser core to prevent overheating of the engine and hydraulics and to maintain efficient operation of the machine. Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in SECTION 2 of the OPERATOR’S MANUAL. 3. Blow off all forest debris and fine organic material accumulated near hot engine exhaust components (turbocharger and exhaust manifold as well as exhaust pipes and muffler) at the completion of each work shift or more frequently when working in logging conditions where large amounts of combustible forest debris are present.

Visual inspection after blow off to ensure thorough cleanliness is vital. Engine exhaust systems provide numerous small pockets where saw dust, small wood chips and other flammable forest debris can gather. Even small accumulations close to hot exhaust components can ignite and smolder. If dislodged this smoldering debris can fall

Safety into other areas of the machine and thereby spread a fire.

4. Clean out all accumulated forest debris (twigs, pine needles, branches, bark, leaves, saw dust, small wood chips) and any other combustible materials from inside the machine belly pans or lower machine structures as well as from areas in proximity to the engine, fuel and hydraulic oil systems no less frequently than at the completion of each work shift.

5. Inspect the machine regularly for any signs of diesel fuel or hydraulic system leakage.

Check for worn or eroded fuel or hydraulic lines before starting up any equipment.

6. Clean up any grease, diesel fuel, hydraulic and lubricating oil accumulation and spillage immediately.

7. Steam clean the engine, transmission, brake, fuel and hydraulic tank compartments of all equipment at least once a month or more frequently when working in logging conditions where large amounts of combustible forest debris are present.

8. Use only nonflammable solutions for cleaning the machine and components.

9. Inspect the exhaust system daily for any signs of leakage. Check for worn, cracked, broken or damaged pipes or muffler. Also check for missing or damaged bolts or clamps.

Should any exhaust leaks or defective parts be found, repairs must be made immediately.

Engine exhaust leaks can cause fires. Do not operate the machine until the exhaust leak is repaired.

10. During daily operation of the machine, the occurrence of exhaust leaks are usually accompanied by a change or increase in engine exhaust noise levels. These audible warnings cannot be ignored. Should any exhaust leaks occur during operation, the machine must be shut down immediately and not put back to work until the necessary repairs have been completed.

11. Park the machine at least 15 m (50 ft) away from other equipment at the end of each shift.

12. Never leave the machine parked with boom, arch or blade suspended off the ground. Should their supporting hydraulic hoses burn through during a fire, pressurized hydraulic oil may be injected into the fire and the boom, arch or blade will fall rapidly to the ground.

1.21

Safety 13. Turn the battery disconnect switch to OFF at shut down to de-energize all electrical circuits.

14. Remain with the machine for at least 45 minutes at the end of operations while the machine cools.

Tigercat 720G/724G/726G Feller Buncher 17. AFTER transporting (trucking) a machine from one job site to the next, open all doors and access panels and blow off any debris that may have repositioned itself onto the engine and exhaust parts due to wind turbulence caused by the journey.

18. Before starting repair work, such as welding, the surrounding area should be cleaned and a fire extinguisher should be close by.

19. Store rags and other combustible materials in a safe, fireproof location.

20. Do not use the machine on top of or to push piles of burning timber. A machine fire will most probably result.

EQUIPMENT FIRES ADVERSELY EFFECT YOUR ABILITY TO LOG, MAY INCREASE YOUR INSURANCE PREMIUMS DRAMATICALLY OR PREVENT YOU FROM OBTAINING INSURANCE COVERAGE AT ALL. WHAT TO DO TO PREPARE FOR A MACHINE FIRE

15. Remove all keys, lock equipment and fuel cap at the end of operations to reduce the risk of vandalism.

16. Be cautious when smoking. An open flame, a lighted cigarette, etc., should not be permitted around any vehicle, especially during fueling operations or when the fuel system is open to the atmosphere or when servicing batteries.

•

Prevent the fire from happening in the first place by ensuring that all machine systems are frequently inspected and always well maintained.

•

Ensure that any hand held fire extinguishers are charged and in working order. Fire extinguishers require routine care. Follow the manufacturer’s instructions for inspection and maintenance shown on the label of the fire extinguisher and in the extinguisher manufacturer's manual.

•

Ensure that any pressurized water systems on the machine (if applicable) are charged and in working order. Refer to PRESSURIZED WATER SYSTEM MAINTENANCE in Section 3.

•

Ensure that you have the proper fire extinguishers on site. Most fires involving mobile forestry equipment will be Class A or B.

•

Dry chemical extinguishers should be rated ABC and pressurized water extinguishers should be rated A. Class A fires involve ordinary combustibles such as wood, cloth, paper, rubber and many plastics, Class B fires occur with flammable liquids such as diesel fuel, oil and grease and Class C fires apply to energized electrical equipment.

1.22

Tigercat 720G/724G/726G Feller Buncher •

•

Ensure that the nozzle of any hand held extinguisher and pressurized water system available on the machine and at the work site fits within the access holes in the doors of the machine.

WHAT TO DO WHEN A MACHINE FIRE OCCURS

Ensure that your fire detection system* is in working order. Refer to FIRE DETECTION SYSTEM in SECTION 2 of the OPERATOR’S MANUAL.

2. Shut the engine off.

•

Ensure that your fire suppression system** is charged and in working order. Refer to FIRE SUPPRESSION SYSTEM in SECTION 2 of the OPERATOR’S MANUAL.

•

Ensure that you are familiar with the recommended procedures for fire contained in the emergency action plan of your company.

•

Ensure that you follow all national, state / provincial and local regulations dealing with fire fighting in effect in your specific geographic region. Regulations will vary from region to region but most will usually require that:

•

•

Safety

1. Workers assigned to fire fighting duties must be physically capable of performing them safely and effectively.

2. Workers designated to use fire fighting equipment as part of an emergency action plan must receive full and proper training from a qualified instructor.

3. Whenever portable fire extinguishers are provided for use in the workplace, training must be provided to familiarize workers with the general principles of fire extinguisher use and the hazards involved with fire fighting.

4. Training must be provided upon initial employment and at least annually thereafter.

Ensure that after you have received the training as outlined above, that you know how to use the fire extinguisher, the pressurized water system (if applicable) and the fire suppression system** on your machine.

There is not enough time available to read instructions during a fire emergency.

If operating the machine when a fire occurs: 1. Lower all working attachments to the ground.

3. Activate the fire suppression system**.

4. Radio or call for help. Be certain to report a fire immediately.

5. Exit the machine taking fire extinguisher and pressurized water system hose (if applicable) with you.

6. At all times ensure your own personal safety and the safety of anyone that may be in the area. Approach any fire with extreme caution.

All fires can be very dangerous and life threatening.

7. Only if you can safely do so, turn OFF the battery disconnect switch.

Before deciding to fight the fire, be certain that: 1. The fire is small and not rapidly spreading.

2. There is always a clear, safe escape route to your back.

3. You have received training in the use of the available fire extinguishing systems and are confident that you can operate them effectively.

•

Be aware that engine coolant , diesel fuel or hydraulic hoses could fail during a fire. If this happens, hot coolant, fuel or oil could possibly be ignited by the fire.

•

If in any doubt about whether or not to fight the fire – DON’T. Instead stand well clear of the fire and wait for help to arrive.

•

If possible a dry chemical fire extinguisher or fire suppression system** should be used first to fight a machine fire. Then immediately afterwards use the pressurized water hose supplied with the machine (if applicable) or a pressurized water extinguisher (if available). A fire suppressed by dry chemical may re-ignite from the heat retained by any debris in the area. The water will cool the area, reducing the chances of re-ignition.

Ensure that all information necessary for you to immediately contact all sources of help (local fire department, etc) in the event of a fire emergency is recorded and readily available at all times.

1.23

Safety

Tigercat 720G/724G/726G Feller Buncher

Use the PASS method. This is the most effective use of a fire extinguisher.

WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED

•

Pull the pin at the top of the extinguisher that keeps the handle from being pressed. Break the plastic seal as the pin is pulled.

Before returning the machine to work.

Aim the nozzle at the base of the fire. Do not aim the nozzle at the flames. In order to put out the fire, you must extinguish the fuel, not the flames. Hose nozzles are often clipped to the extinguisher body. Release the hose before taking aim.

2. Ensure that the fire detection system* or the fire suppression system** is properly serviced and in working order (if applicable).

•

1. Ensure that the cause of the fire is determined and all appropriate repairs are completed.

3. Ensure that all extinguishers used in fighting the fire are replaced or recharged.

•

Squeeze the handle to release the pressurized extinguishing agent. The handle can be released at any time to stop the discharge.

Notify your equipment dealer and / or Tigercat Industries Inc. by completing an incident report, Tigercat form number 5101.

•

Sweep from side to side at the base of the fire until the fire is completely out or the fire extinguisher is empty

*NOTE: Fire detection systems are offered by Tigercat as an optional installation on some Tigercat product lines. Please disregard any references made to fire detection systems if not installed on your machine. **NOTE: Dry chemical fire suppression systems are offered by Tigercat as an optional installation on some Tigercat product lines. Please disregard any references made to fire suppression systems if not installed on your machine.

20229A

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

•

Place the nozzle of the fire extinguisher into the appropriate fire extinguisher access hole and discharge the extinguisher.

•

Only if you can safely do so, open the access panels to the machine in the area of the fire.

•

Failing all attempts to access the machine compartment, discharge the extinguisher through the mesh or any available openings on the machine.

•

Ensure that the machine and all components have cooled down sufficiently after a fire so that re-ignition does not occur.

•

Remain with the machine until help arrives.

1.24

Tigercat 720G/724G/726G Feller Buncher DRY CHEMICAL CLEANUP PROCEDURES Both ABC dry chemical fire extinguishers and fire suppression systems discharge a chemical powder to extinguish the fire. The chemical makeup and the small particle size of the powder as well as the force of the discharge all contribute to the fire fighting capability. These same characteristics also permit the powder to penetrate into and fully cover all components in the vicinity of the discharge.

Safety 3. In areas exposed to heat during the fire, the dry chemical powder will melt forming a coating that cakes or crusts on all surfaces.

To break down the caked dry chemical, spray or wash these areas with a 50/50 mixture of hot water and isopropyl alcohol. Allow this mixture to stand in place for several minutes.

The caked dry chemical when exposed to moisture is also mildly acidic. Therefore when the break down procedure has been completed, follow this immediately with the neutralizing procedure as described in Step 2.

The following are recommendations for the cleanup and neutralizing of areas exposed to dry chemical powder.

Workers performing this work should wear protective clothing, safety goggles and a fine particle dust mask to minimize their personal exposure to the dry chemical powder.

Ensure that all electrical systems have been completely de-energized prior to any cleanup.

1. In areas of the machine that remained cool and dry during the fire, the dry chemical will stay in powder form.

Be certain to clean these areas immediately to prevent any settled residual powder from coming into contact with moisture whether through direct contact or humidity in the air.

Remove the powder residue by blowing off with air, sweeping, dusting or vacuuming using a HEPA filter capable of trapping the small dry chemical particles. Then wipe all surfaces with a damp cloth.

2. In areas exposed to moisture, the dry chemical powder will combine with water to form a paste that is mildly acidic. Note that all surfaces covered by this dry chemical paste including electrical contacts are vulnerable to corrosive attack.

To neutralize the acidic paste on large surfaces, spray or wash these areas with a mixture of 3 parts hot water to 1 part baking soda. Allow this mixture to stand for several minutes before rinsing with warm water. Wash the area with a mild soap and water solution.

Rinse thoroughly with water. Blow-dry to remove all residual water.

Cleaning of electrical contacts should be done using an electrical contact cleaner that has no flash or fire point and is non-corrosive and non-conductive such as CRC Contact Cleaner 2000.

1.25

Safety

Tigercat 720G/724G/726G Feller Buncher OPERATOR'S MANUAL LOCATION

SAFETY LABELS SAFETY LABELS CAB LABELS The following safety labels are installed in the cab.

These labels are located inside the cab in full view of the operator. All labels must be periodically cleaned and inspected to ensure legibility is maintained. Replace any label that becomes illegible, damaged or removed.

This label indicates the storage location of the operator's manual. This label is located on the outside of the operator's manual case inside the cab.

READ OPERATOR'S MANUAL

USE SEAT BELT

Always read the operator’s manual before operating the machine. Pay close attention to WARNINGS and HAZARD identifications.

USE SEAT BELT. The seat belt supplied with this seat must be used at all times when operating this machine.

Study all the safety messages in this manual and on the labels on the machine carefully.

1.26

Tigercat 720G/724G/726G Feller Buncher NO RIDERS

Safety REMOVE IGNITION KEY BEFORE SERVICING THE MACHINE!

NO RIDERS INSIDE OR OUTSIDE OF THE MACHINE. Do not carry passengers either in the cab or anywhere else on the machine. The vehicle seating accommodation is for one operator only.

Persons riding on the outside of the machine are subject to hazards such as falling off the machine, crush hazards, thrown object hazards and many other hazards WHICH COULD RESULT IN DEATH OR SERIOUS INJURY.

Prior to performing any service work or maintenance on the machine, stop the engine, REMOVE THE IGNITION KEY and store it in a safe place.

If any person attempts to climb onto the machine during operation, STOP THE MACHINE IMMEDIATELY. Do Not Operate the machine until other personnel are a safe distance away from the machine.

1.27

Safety

Tigercat 720G/724G/726G Feller Buncher

EMERGENCY EXIT, CAB, RIGHT-HAND SIDE DOOR

CHECK DAILY

This label is located on the right-hand cab door post next to the door, alerting the operator that, in the event of an emergency this door can be used as an emergency exit.

Ensure all exit doors and exit hatch are functioning properly at all times.

Refer to SIDE DOOR AND ESCAPE HATCH EMERGENCY EXIT MAINTENANCE GUIDE in THIS SECTION.

This label is installed in the cab. In addition to the previous label it is a reminder to check the machine daily for the possibility of debris build-up, leaks, damaged wires and hoses and take the necessary action required to clean up any debris accumulation, repair any leaks, damaged wires or hoses.

EMERGENCY EXIT, HAND TIGHTEN ONLY

The label also advises to check and ensure that all fire fighting devices are in good working order.

This label is located on each of the escape hatch clamp-brackets to indicate that the escape hatch can also be used as an emergency exit.

The label also indicates that the escape hatch knobs should be hand tightened only to allow for easy exit.

Ensure all exit locations are functioning properly.

Refer to ESCAPE HATCH EMERGENCY EXIT in SECTION 2 of the OPERATOR'S MANUAL. Refer to SIDE DOOR AND ESCAPE HATCH EMERGENCY EXIT MAINTENANCE GUIDE in THIS SECTION.

1.28

Tigercat 720G/724G/726G Feller Buncher

Safety

EXTERIOR LABELS The following safety labels are installed on the exterior of this machine. These labels are located on the machine in the area where the specific safety concern is applicable. Labels must be periodically cleaned and inspected to ensure legibility is maintained. Replace any label that becomes illegible, damaged or removed.

KEEP BACK

This label warns personnel to KEEP BACK 150 m (500 ft) from the machine due to flying projectile hazard. Danger exists most prominently to the front and rear of the mulching head and around the felling head.

When approaching an operating machine on foot, stay at least 150 m (500 ft) away until the operator recognizes your presence. Make sure that all equipment has been shut down before advancing to the machine.

CRUSH HAZARD

This label warns of the crush zone in the center joint area. This can occur when the machine steering is used. DO NOT WORK IN THIS AREA UNTIL THE ARTICULATION LOCK BAR IS INSTALLED! Before working in the center joint area, INSTALL THE CHASSIS ARTICULATION LOCK BAR between the chassis and center joint to prevent accidental articulation which could result in death or serious injury.

Refer to ARTICULATION LOCK in SECTION 3 of THIS MANUAL for complete instructions.

1.29

Safety

Tigercat 720G/724G/726G Feller Buncher

ENTANGLEMENT HAZARD

CUTTING HAZARD

36779BUNI R0

This label warns of an ENTANGLEMENT HAZARD (rotating parts) zone.

This label informs you of the cutting hazards of the cooling fan blade when the engine is running.

The label is located near the front of the engine and the engine serpentine drive belt. DO NOT PLACE HANDS OR FINGERS IN THIS AREA. Rotating parts such as pulleys, belts and drives can cause entanglement of body parts resulting in serious injury.

KEEP CLEAR of cutting hazards caused by rotating components.

The label is located on the side of the engine cooling fan shroud. DO NOT PLACE HANDS OR FINGERS IN THIS AREA. Rotating parts such as cooling fan blades can cause entanglement of body parts resulting in serious injury.

KEEP HANDS AND FINGERS CLEAR OF ROTATING BELT, DRIVE OR PULLEY! Before performing any service work on these parts or in this area, turn the engine off and wait for rotating parts to come to a complete stop.

KEEP HANDS AND FINGERS CLEAR OF ROTATING FAN BLADES! Before performing any service work on these parts or in this area, turn the engine off and wait for rotating parts to come to a complete stop.

1.30

Tigercat 720G/724G/726G Feller Buncher CRUSH HAZARD

Safety EXPLOSIVE RELEASE OF HOT COOLING SYSTEM PRESSURIZED FLUID

33952AUNI R0

This label warns of the CRUSH HAZARD caused by the boom when it is not properly supported.

This label warns of a PRESSURE AND FLUID SPRAY HAZARD when the coolant in the radiator is hot.

Never work under or near an unsupported boom or attachment. CONTACT WITH A FALLING BOOM COULD RESULT IN DEATH OR SERIOUS INJURY!

DO NOT LOOSEN CAP UNTIL COOL. Explosive release of fluids from pressurized cooling system can cause serious burns.

Always lower the boom to the ground so that the weight of the boom and attachment is resting on the ground. Properly support and brace boom and turn engine off before performing service work.

Turn engine off. Only remove coolant filler cap when cool enough to touch with bare hands.

Slowly loosen cap to first stop to relieve pressure before removing completely.

1.31

Safety

Tigercat 720G/724G/726G Feller Buncher STORED ENERGY HAZARD

EXPLOSION HAZARD

WARNING

WARNING

• EXPLOSION HAZARD. • DO NOT USE ETHER. • ENGINE EQUIPPED WITH HEATER STARTING AID. • USE OF ETHER COULD RESULT IN DEATH OR SERIOUS INJURY. 36782BENG R0

This label warns of an EXPLOSION HAZARD. It is located near the engine air intake precleaner.

The engine is equipped with a heater starting aid, DO NOT USE ETHER to assist in starting the engine.

USING ETHER COULD CAUSE AN EXPLOSION WHICH COULD RESULT IN DEATH OR SERIOUS INJURY.

• STORED ENERGY HAZARD • THE ACCUMULATOR HAS 3000 PSI OF STORED ENERGY. SERVICING THE ACCUMLATOR BEFORE RELEASING PRESSURE COULD RESULT IN DEATH OR SERIOUS INJURY.

FLUID SPRAY HAZARD

• DO NOT SERVICE THE ACCUMULATOR BEFORE RELEASING PRESSURE BY APPLYING BRAKES 25 TIMES WITH ENGINE OFF. 39945BENG R0

This label warns of a STORED ENERGY HAZARD.

This label is located above the pressurized water system fill plug in the right rear corner of the machine.

The machine is equipped with accumulator(s) (located in the rear chassis). The accumulator has stored energy in the form of hydraulic pressure.

Servicing the accumulator or any hydraulic components before releasing pressure could result in death or serious injury.

The machine is equipped with a pressurized water system. A water tank is incorporated into the rear bumper and is pressurized to 4 bar (60 psi).

DO NOT SERVICE ACCUMULATOR OR ANY HYDRAULIC COMPONENTS BEFORE RELEASING PRESSURE.

Contact with fluid under pressure may cause injury.

Refer also to RELEASING PILOT PRESSURE FROM THE ACCUMULATOR in this section.

This label warns of a FLUID SPRAY HAZARD.

DO NOT SERVICE PRESSURIZED WATER SYSTEM until air pressure is fully released by depressing the water system spray nozzle.

Tank fill plug has a cross drilled vent hole. Do not replace with standard plug.

Refer also to PRESSURIZED WATER SYSTEM MAINTENANCE in Section 3.

1.32

Tigercat 720G/724G/726G Feller Buncher FIRE PREVENTION!

Safety FIRE EXTINGUISHER ACCESS HOLE

This label indicates the location of each FIRE EXTINGUISHER ACCESS HOLE. The label is installed on each fire extinguisher hole around the machine.

This label advises the operator of the following: READ UNDERSTAND AND FOLLOW THE FIRE PREVENTION GUIDELINES IN THIS MANUAL. These guidelines provide all the necessary action required to preventing fires on this machine. DO NOT OPERATE THIS MACHINE until you have read these instructions and have performed any necessary maintenance required that will prevent the potential of a fire from starting on this machine.

It is also important to note that fire prevention inspections and maintenance MUST BE PERFORMED FREQUENTLY (several times per day). A clean combustible free machine as well as frequent inspections of the exhaust components, hydraulic hoses and electrical cables and performing any necessary repairs immediately will help prevent fires.

Maintain a CHARGED fire extinguisher on the machine at all times, know where it is and KNOW HOW TO USE IT!

1.33

Safety

Tigercat 720G/724G/726G Feller Buncher

1.34

USING HIGH SPEED DISC SAWS SAFELY............................................... APPENDIX TO SECTION 1

DANGER USING HIGH-SPEED DISC SAWS SAFELY This information is intended to encourage logging organizations and operators to develop and practice additional rules that suit particular terrain conditions and job requirements. It is also intended to assist towards a quicker understanding of how and why things can happen when a high speed disc saw is in use; and hence to assist in development of safe operating practices.

The following information is in addition to any safety instructions or recommended safe operating practices that may already be in circulation.

CONTENTS COMMENTS AND INSTRUCTIONS DIRECTION OF THROW.......................................................... 7 HIGH ANGLE WRIST ROTATION ABILITY.............................. 8 RECOGNIZING THE DANGERS.............................................. 7 THROWING LONG WOOD PIECES...................................... 10 DANGERS.................................................................................... 3 FORWARD................................................................................... 2 BE AWARE OF THE HAZARDS............................................... 2 OTHER INSTRUCTIONS......................................................... 3 SAFE PRACTICES................................................................... 3 SEVERAL TYPES OF HEADS INVOLVED.............................. 2 STORED ENERGY................................................................... 2 HIGH ANGLE WRIST ROTATION CAPABILITY.......................... 9 SAW HEAD DON'TS.................................................................. 15 TYPE OF HOUSING MAKES A DIFFERENCE............................ 4

Tigercat

5211A • R2-1101

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Using High-Speed Disc Saws Safely FORWARD:

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Several types of heads involved Tigercat wheel type feller-bunchers and crawler feller-bunchers can be supplied with several optional makes and models of high speed disc saw tree felling heads. Because each has certain advantages and disadvantages they are chosen where they best do specific types of work.

Stored energy The saw blade stores energy from the hydraulic motor during the times between tree cuts so that it can supply up to 1000 hp during a 1 sec tree cut. However this rotational energy, if misapplied can result in wood materials or other objects being thrown strongly enough to cause damage and to hurt people.

Be aware of the hazards It is important that users of machines with disc saw felling heads are aware of certain safety precautions that need to be taken. In this section some previously unknown, unexpected safety hazards are illustrated and explained . These should be studied before use of the machinery and then reviewed again after use has begun.

FIGURE 1: BROADSIDE SAW CONTACT WITH A LOG COULD PRODUCE A THROW

FIGURE 2: A SUDDEN MACHINE MOVEMENT MAY 2 THROW AT THE CAB CAUSE AN UNEXPECTED

Using High-Speed Disc Saws Safely

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Safe practices It is understood and expected that logging organizations and operators will develop and practice additional rules that suit (for example) particular conditions of terrain, trees, soil and job requirements. The information given here is intended to assist towards a quicker understanding of how and why things can happen when a high speed disc saw is in use; and hence to assist in development of safe operating practices.

It should not be assumed that all possible dangers have been discovered and described here.

Other instructions It is also understood and expected that all instructions contained in service and operator's manuals for use and maintenance of Tigercat disc saw heads and other disc saw heads installed on Tigercat machines will be followed.

THE DANGERS

There are at least these means by which a rotating disc saw can cause harm by throwing: • The normal throwing of chips from the cut.

• Soil particles are thrown from the ground.

• Loose chunks of wood encountered or produced are tossed by the exposed blade.

• Sticks and debris falling onto the blade or sliding across the blade are struck by the teeth and thrown.

• Metal pieces from the blade or from objects encountered are thrown.

• Wood pieces enter the saw housing and are expelled by the blade.

• In very peculiar cases the saw can throw long lengths of wood as spears.

3

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TYPE OF HOUSING MAKES A DIFFERENCE Since the configuration of the saw housing can affect the safety of its use we need to identify some particular types of housing shapes and guarding being used.

Figure 3 shows a typical commonly used saw housing plan where there is a continuous skirt around the saw except at a mouth opening where the trees are cut and taken. The skirt extends below the saw enough to intercept tangential throw. There are snouts on both sides of the mouth so that if pushed against the side of a felled tree or log the saw teeth will not contact the wood.

THROW ANGLE

IF A SAW HEAD IS PUSHED AGAINST THE SIDE OF A FELLED TREE, SNOUTS PREVENT SAW TEETH FROM CONTACTING WOOD.

FIGURE 3: TYPICAL COMMONLY USED SAW HOUSING, CONTINUOUS SKIRT WITH OPENING WHERE TREES ARE CUT. SNOUTS ON BOTH SIDES OF THE MOUTH.

4

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Figure 4 shows another commonly used plan. It has no blade guarding snouts so that the saw blade teeth do protrude ahead of the housing. This may be preferred over figures 3 and 5 for dexterity in tree getting.

THROW ANGLE

IF A SAW HEAD WITHOUT SNOUTS IS PUSHED AGAINST THE SIDE OF A FELLED TREE, SAW TEETH WILL CONTACT WOOD.

FIGURE 4: ANOTHER COMMONLY USED HOUSING PLAN WITH NO SNOUTS, BLADE TEETH PROTRUDE AHEAD OF THE HOUSING.

In figure 5 there is a much longer snout on the ingoing side of the mouth, i.e., where the teeth of the rotating blade are entering the housing. The broad side of a log, if nudged, will not contact the saw teeth and more thrown material will be intercepted by the extra length of snout.

THROW ANGLE

NUDGED LOG WILL NOT CONTACT SAW TEETH. EXTRA LENGTH OF SNOUT WILL INTERCEPT PORTION OF THROWN MATERIAL.

FIGURE 5: HOUSING USES LONGER SNOUT ON IN-GOING SIDE OF MOUTH WHERE ROTATING BLADE ENTERS HOUSING.

5

Using High-Speed Disc Saws Safely Housing types cont.

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In figure 6a and 6b there is an additional opening in the housing skirt. Openings in this location are sometimes provided for escape of wood chips produced by the saw teeth in the cut and being taken into the housing.

A CHIP ESCAPE PORT CAN ALLOW THROW BEHIND THE MACHINE

REAR

FRONT

FIGURE 6a

FIGURE 6b

FIGURE 6c

FIGURE 6: ADDITIONAL OPENING IN THE HOUSING SKIRT.

In figure 6c a guard has been added to the chip escape port so that tangential travel of chips and other material is intercepted as soon as it leaves the housing.

Each figure shows a shaded area where normally tangentially thrown material can escape from the saw housing. Deflected and dropped chips escaping below the bottom edge of the housing skirt are not included. The areas and angles are not exact but do show that one head can be different from another.

It is important that the operator familiarize himself with the blade rotation direction, the effectiveness of any snout on the in-going side and which direction any chip escape ports allow material to fly.

6

Using High-Speed Disc Saws Safely

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COMMENTS AND INSTRUCTIONS

Recognizing the Dangers While it may appear that these illustrated danger areas can be visually recognized on the job by observing how far chips fly during a cut, that is only true for chips and other light weight materials.

Metal parts and wooden spears can be thrown to surprisingly greater distances. Even distant personnel on the ground, in other vehicles, or in buildings are at risk if the throw is in their direction.

Direction of throw The direction of possible tangential throw for metal parts and stones is dependent on the housing configuration and might be expected to be the same as observed for the chips. However, these throws can occur at any time the saw is running, in whichever direction the angle of throw is pointed by boom geometry, not just when a cut is being made.

Throw distance The throw distance for metal pieces and stones, can be many times the distance shown by the pattern for chips. More testing and data collection is needed to pin down a “safe distance” but if someone or something is in a place that can be seen by the operator and in the throw direction of a high speed disc saw, then the operation is not safe regardless of the distance.

Safe operating areas These saw heads must not be used in areas where the logging operation does not have control over the presence and movement of people. In particular, clearing of vegetation in urban and populated areas should not be done with a Tigercat manufactured or supplied high speed disc saw. High speed disc saw heads are intended for high productivity wood harvesting in areas remote from normal habitation. The possible presence of people and property within throw range and the likelihood of encountering scrap metal, wire fencing, steel posts and concrete must be respected.

Assessing the potential dangers on the job site The extent of danger from high speed disc saws on the logging operation has to be assessed on the job site, depending on how much other work activity is in the area and whether the operator can do his job of cutting and bunching with good control of throw patterns. Danger is greater if the saw is equipped with detachable, or fragile, or brittle teeth, or if the site contains stones or abandoned metal.

7

Using High-Speed Disc Saws Safely Comments and Instructions cont.

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Regular maintenance Poor saw maintenance increases these dangers. Some designs that might allow fasteners to wear thin or fatigue and suddenly break, need thorough timely replacement procedures. It is important that the warning signs of missing saw tooth parts or the sounds of striking rocks be heeded and the operation adjusted to avoid danger.

High angle wrist rotation ability When a felling machine is equipped with a high speed disc saw head with a high angle wrist rotation ability it should be determined that the limits of the boom, stick, tilt, wrist, upper leveling and any other freedoms, do not permit a direct throw at the operators cab during normal operation, see figure 7a. It is probably essential that the housing have a long snout on the throw side and that if a chip escape port is used it should be guarded.

With these high mechanical freedom arrangements there is a chance that an unforeseeable operator misadventure or equipment failure could result in an accidental direct or deflected throw at the operators cab, refer to figure 2 and 7b. The cab should be capable of resisting such accidental and ricochet throws. The velocity energy of metal or rock pieces leaving the blade is extremely high. The operators cab cannot be considered safe to routinely operate in the chip throw area, even if it has been especially constructed to prevent penetration by accidentally thrown objects.

8

Using High-Speed Disc Saws Safely

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FELLING HEAD • WITH A CHIP ESCAPE PORT AND SHORT SNOUT. • SHOWN IN A HIGH ANGLE WRIST ROTATION POSITION, PLACING OPERATOR'S CAB IN DIRECT LINE WITH UNGUARDED CHIP ESCAPE PORT

FIGURE 7a

PLAN VIEW OF MACHINE SHOWING CLOCKWISE AND COUNTERCLOCKWISE BLADE ROTATION

FIGURE 7b FELLING HEAD • WITH LONGER SNOUT ON THROW SIDE OF OPENING AND WITH A GUARDED CHIP ESCAPE PORT.

FIGURE 7: DISC SAW FELLING HEAD WITH HIGH ANGLE WRIST ROTATION CAPABILITY

9

Using High-Speed Disc Saws Safely Comments and Instructions cont.

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Throwing long wood pieces Dangers from throws of long wood pieces are illustrated in figures 8 to 11. Tests and experience have shown that when a high speed rotating saw is applied to a loose piece of wood, the wood is either blown or pushed away, without a throw. If the wood is held firmly in all directions and the saw advanced into it at any feed speed, cutting will take place. If the wood is only held against escape from the saw radially, but not held tangentially, then the wood will be both partly cut and partly moved tangentially. In this last case tests have shown that if the piece of wood is backed-up by a solid slippery surface; and if the feed in is very fast; and if the piece of wood is long enough; then the tangential movement is a dangerous spear-like throw.

A SLAB, WHICH COULD LATER BE THROWN, MIGHT HAPPEN WHEN NOT ENOUGH ROOM IN HEAD TO COMPLETELY CUT THE LAST TREE

SLAB

SLAB

N

I ED

FE

FIGURE 8a: HOW A SLAB CAN BE THROWN FROM THE SIDE OF A LOG

TH DIR ROW EC TIO N

SAW HOUSING HAS SKIS, BUT WITHOUT SNOUTS AND BLADE TEETH PROTRUDE AHEAD OF THE HOUSING.

FIGURE 8

THROW ENGAGEMENT DISTANCE FELLING HEAD MOVING INTO SLAB/LOG

SLAB

LOG A LONG THROW ENGAGEMENT DISTANCE CAN CAUSE A DANGEROUS SPEAR THROW

FIGURE 8b SIDE VIEW

FEED IN

IF THE SIDE OF A LOG CAN CONTACT THE SAW, THE THROW ENGAGEMENT DISTANCE CAN BE LONG

10

FIGURE 8c TOP VIEW

Using High-Speed Disc Saws Safely

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Comments and Instructions cont.

Figures 8 and 9 show two ways that this might happen in the woods if using the saw head of figure 4 (where the throw contact can be long). A slab, still partly attached to a well backed-up tree bole and wet with sap, makes an ideally bad throw situation which could unintentionally occur in woods work. A small log in a pile of other logs might also be propelled out with enough length of continued contact to reach near saw tip speed.

A SMALL LOG IN A PILE OF OTHER LOGS MIGHT ALSO BE PROPELLED OUT WITH ENOUGH LENGTH OF CONTINUED CONTACT WITH THE BLADE TO REACH NEAR SAW TIP SPEED.

ED

FE

IN

FELLING HEAD MOVING INTO LOG PILE

FIGURE 9a: HOW A LOG CAN BE THROWN LIKE A SPEAR

SAW HOUSING WITHOUT SNOUTS AND BLADE TEETH PROTRUDE AHEAD OF THE HOUSING. THROW ENGAGEMENT DISTANCE

SMALL LOG LOG PILE FEED IN

A SAW HOUSING WITHOUT SNOUTS ALLOWS A LONG THROW ENGAGEMENT DISTANCE

FIGURE 9b SIDE VIEW

FIGURE 9c TOP VIEW

IF THE SIDE OF A LOG CAN CONTACT THE SAW, THE THROW ENGAGEMENT DISTANCE CAN BE LONG

FEED IN

11

Using High-Speed Disc Saws Safely Comments and Instructions cont.

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Figure 10 shows how a head with snouts does not allow a long throw contact. Although tests show that a short contact length on a long log or tree butt does not result in a spear like throw, this action should nevertheless be avoided because abnormally large chips are sometimes produced and thrown.

UNCUT TREE OR STUMP BACKUP

THROW ENGAGEMENT DISTANCE

WHEN ONLY THE END OF A LOG CAN MAKE CONTACT WITH THE SAW, THERE IS NOT MUCH THROW ENGAGEMENT DISTANCE

FIGURE 10: FELLING HEAD HOUSING WITH SNOUTS DOES NOT ALLOW A LONG THROW CONTACT

FELLING HEAD MOVING INTO LOG

Figure 11 warns that blocks of wood can be tossed in any direction when improvising with a disc saw to trim over-size stumps. A long snout and a slow feed speed lessen danger during stump trimming.

A similar danger of throw may exist when clearing small brush with multiple pass cuts.

FELLING HEAD MOVING INTO STUMP (FEED SPEED)

FIGURE 11: A BLOCK OF WOOD CAN BE TOSSED WHEN TRIMMING STUMPS

12

Using High-Speed Disc Saws Safely

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Comments and Instructions cont.

Saw blade throw gap Saw blades have gaps between adjacent teeth and holders to permit installation and removal of the teeth and to provide spaces to accumulate chips in the cut, see figure 12. Fallen sticks and debris or sticks and debris sliding across the saw blade can enter these gaps when the blade is rotating and be struck by the teeth and be tossed or thrown. Larger gaps and lower rotation speeds increase these dangers.

THROW GAP

FIGURE 12: SAW BLADE THROW GAP

13

Using High-Speed Disc Saws Safely Comments and Instructions cont.

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Saw housing entrance and exit space To avoid the ingestion of materials into the housing space above the disc (and later ejection) the ingoing entrance for the saw rim of teeth is kept as small as practical. It is important that this high wear area be maintained at its original size and shape. The outgoing opening is large enough to allow the housing to clean itself and will allow most things inside to be thrown out, see figure 13. Its throw direction and angle must be respected. A long snout on the other side reduces this danger.

THE INGOING ENTRANCE OF THE HOUSING FOR THE SAW RIM OF TEETH SHOULD BE SMALL

THE OUTGOING OPENING IS LARGER TO ALLOW THE HOUSING TO CLEAN ITSELF AND WILL ALLOW MOST THINGS INSIDE TO BE THROWN OUT

FIGURE 13: SAW BLADE ENTRANCE AND EXIT SPACE

14

Using High-Speed Disc Saws Safely

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Comments and Instructions cont.

This information is offered by Tigercat as part of interim action to make saw heads safer. It is based on what has recently been reported from the field and on tests conducted on proving grounds. Tigercat is continuing to do design and testing of tree felling machinery towards achieving greater safety in the woods. Tigercat would be thankful for written reports describing any unsafe happenings, including near misses, in the use of felling heads and their carriers.

The following are some “SAW HEAD DON’TS” that apply particularly to throw prevention.

Do not point the throw of a disc saw head in a direction towards people, vehicles or buildings at any visible distance.

Do not operate in a way that throws chips in a direct-line at the machine cab.

Do not push hard with the saw against anything except a standing tree to be cut.

Do not mix new sharp teeth with old dull teeth on the same saw.

Do not change the blade rotation from its designed direction in the head.

Do not over speed the blade rpm.

Do not remove or shorten snouts provided by the head manufacturer or installer.

Do not neglect tooth fastening inspection, maintenance and replacement.

Do not neglect to repair worn or damaged saw housings.

Do not neglect to replace any covers removed for service or clean out.

Do not count on skis to give the throw protection that snouts do.

Do not nudge loose short pieces with the front of any type of head.

Do not nudge anything, even long logs, with the front of a head which has no snouts.

Do not cut short small stalks when blade speed is low.

Do not operate a high speed disc saw in a populated area.

Do not assume that visitors and other workers are aware of disc saw dangers.

Do not assume that the operator will spare you, a visitor, from danger.

Do not select and operate heads that throw rearward.

Do not select and operate heads with unnecessarily wide throw angles.

Do not neglect to read and follow all instructions provided by the saw and head manufacturers.

15

Using High-Speed Disc Saws Safely

Tigercat

®

16

Tigercat 720G/724G/726G Feller Buncher SECTION 2 – CONTROLS AND OPERATION CONTENTS – SECTION 2

ISSUE 3.0, FEBRUARY, 2015

ACCESS PANELS, ENGINE...................................................................................................................2.75 ACCUMULATING ARMS......................................................................................................................... 2.11 AIR CLEANER, ENGINE.........................................................................................................................2.82 AIR CLEANER UNLOADER VALVE.......................................................................................................2.83 AIR CONDITIONER/HEATER.................................................................................................................2.19 AIR FILTER ELEMENTS.........................................................................................................................2.82 AIR INTAKE SYSTEM, ENGINE FILTER RESTRICTION INDICATOR....................................................................................................2.82 AIR VENTS.............................................................................................................................................2.19 ALARM LIGHT.........................................................................................................................................2.14 ARTICULATION LOCK BAR.................................................................................................................2.100 AUXILIARY POWER SUPPLY, 12 VOLT.................................................................................................2.17 BATTERY DISCONNECT SWITCH........................................................................................................2.21 BLUETOOTH FUNCTIONS.....................................................................................................................2.18 BOOM CYLINDER LOCK.....................................................................................................................2.101 BOOM LIFT............................................................................................................................................. 2.11 BOOM LIFT LOCK................................................................................................................................2.101 BRAKES..................................................................................................................................................2.12 CENTER JOINT LOCK PIN...................................................................................................................2.100 CIGAR LIGHTER.....................................................................................................................................2.17 CLAMP ARMS.........................................................................................................................................2.12 CLEANING A/C CONDENSER, AND COOLER PACKAGE....................................................................2.84 CLEANING INSTRUCTIONS FOR GLASS WINDOWS.........................................................................2.96 COLD WEATHER STARTING.................................................................................................................2.91 COMPUTER.............................................................................................................. 2.14, 2.29, 2.30, 2.31 ADJUSTMENT MENU..........................................................................................................................2.36 ALERT MESSAGES.............................................................................................................................2.63 CRITICAL MESSAGES........................................................................................................................2.51 DATE/TIME ADJUSTMENT..................................................................................................................2.45 DISPLAY ADJUSTMENT......................................................................................................................2.44 ENGINE COOLANT TEMPERATURE GAUGE....................................................................................2.33 ENGINE MENU.....................................................................................................................................2.32 ENGINE MENU - ECO MODE FUNCTION..........................................................................................2.35 ENGINE MENU - ENGINE FUNCTIONS..............................................................................................2.34 BOOST PRESSURE......................................................................................................................... 2.34 CHARGE AIR TEMPERATURE........................................................................................................ 2.33 COOLANT TEMPERATURE............................................................................................................. 2.33 ENGINE HOURS............................................................................................................................... 2.34 ENGINE OIL TEMPERATURE.......................................................................................................... 2.34 ENGINE VOLTAGE........................................................................................................................... 2.34 ENG % LOAD................................................................................................................................... 2.34 FUEL RATE....................................................................................................................................... 2.34 FUEL TEMPERATURE..................................................................................................................... 2.34 OIL PRESSURE................................................................................................................................ 2.34 ENGINE MENU - FUEL INFORMATION FUNCTIONS TOTAL FUEL INFORMATION........................................................................................................... 2.35 TRIP FUEL INFORMATION.............................................................................................................. 2.35 ENGINE TACHOMETER GAUGE........................................................................................................2.34 ERROR MESSAGES............................................................................................................................2.59 GENERAL SETTINGS..........................................................................................................................2.37

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

HYDRAULIC OIL TEMPERATURE GAUGE........................................................................................2.41 INFORMATION MENU ........................................................................................................................2.40 CUTTER FUNCTIONS ..................................................................................................................... 2.41 DISC SAW HOURS .......................................................................................................................... 2.41 DISC SAW PRESSURE ................................................................................................................... 2.41 HYDRAULIC OIL TEMPERATURE .................................................................................................. 2.41 MACHINE HOURS ........................................................................................................................... 2.41 MACHINE VOLTAGE ....................................................................................................................... 2.41 SERIAL NUMBER ............................................................................................................................ 2.41 MAIN MENU PAGE..............................................................................................................................2.42 MAIN MENU PAGE - PREFERENCES MENU LANGUAGE ADJUSTMENT ............................................................................................................ 2.47 MEASURE MENU................................................................................................................................2.43 MESSAGES .........................................................................................................................................2.50 MESSAGES - ALERT DIESEL EXHAUST FLUID < 5% ...................................................................................................... 2.69 DIESEL EXHAUST FLUID LEVEL <10% ......................................................................................... 2.69 DIESEL EXHAUST FLUID LEVEL EMPTY ...................................................................................... 2.69 DIESEL EXHAUST FLUID QUALITY ............................................................................................... 2.70 DRIVE CHARGE FILTER BYPASS .................................................................................................. 2.65 ENGINE AIR INTAKE FILTER RESTRICTED .................................................................................. 2.65 ENGINE COOLANT TEMPERATURE HIGH ................................................................................... 2.68 ENGINE FAULT CODE MESSAGES - ALERT................................................................................. 2.71 ENGINE VOLTAGE HIGH ................................................................................................................ 2.68 ENGINE VOLTAGE LOW ................................................................................................................. 2.68 FIRE DETECTION SYSTEM MALFUNCTION................................................................................. 2.65 FUEL LEVEL LOW ........................................................................................................................... 2.66 FUEL - WATER IN FUEL .................................................................................................................. 2.68 HARDWARE FAILURE - COUT ....................................................................................................... 2.67 HARDWARE FAILURE - DIN ........................................................................................................... 2.67 HARDWARE FAILURE - DOUT ....................................................................................................... 2.67 HARDWARE FAILURE - VIN ........................................................................................................... 2.67 HARDWARE FAULT - MD3 .............................................................................................................. 2.66 HARDWARE FAULT - XA2............................................................................................................... 2.66 MACHINE VOLTAGE HIGH ............................................................................................................. 2.65 MACHINE VOLTAGE LOW .............................................................................................................. 2.66 MODULE HIGH SUPPLY VOLTAGE - ALERT ................................................................................. 2.73 MODULE HIGH TEMPERATURE - ALERT...................................................................................... 2.72 MODULE LOW SUPPLY VOLTAGE - ALERT .................................................................................. 2.74 MESSAGES - CRITICAL AFTERTREATMENT SYSTEM ENGINE IDLE TOO LONG ............................................................ 2.56 AFTERTREATMENT SYSTEM TECHNICAL FAILURE ................................................................... 2.56 ENGINE COOLANT LEVEL LOW .................................................................................................... 2.55 ENGINE COOLANT TEMPERATURE HIGH ................................................................................... 2.55 ENGINE FAULT CODE MESSAGES - CRITICAL............................................................................ 2.58 ENGINE LOCKED OUT ................................................................................................................... 2.57 ENGINE OIL PRESSURE LOW ....................................................................................................... 2.58 ENGINE OIL TEMPERATURE HIGH ............................................................................................... 2.58 ENGINE RESTARTS REMAINING UNTIL ENGINE LOCKOUT ...................................................... 2.57 ENGINE TORQUE DERATE ACTIVE .............................................................................................. 2.56 FIRE DETECTED ............................................................................................................................. 2.53 HARDWARE FAULT - ENGINE........................................................................................................ 2.54 HARDWARE FAULT - MD3 .............................................................................................................. 2.54 HARDWARE FAULT - XA2............................................................................................................... 2.54

2.2

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

HYDRAULIC OIL LEVEL LOW.......................................................................................................... 2.52 HYDRAULIC OIL RETURN FILTERS BYPASSED........................................................................... 2.53 HYDRAULIC OIL TEMPERATURE HIGH......................................................................................... 2.52 MESSAGES - ERROR CURRENT OUTPUT ERROR (COUT)............................................................................................. 2.62 DIGITAL INPUT ERROR (DIN)......................................................................................................... 2.62 DIGITAL OUTPUT ERROR (DOUT)................................................................................................. 2.62 MODULE NO CONTACT ERROR.................................................................................................... 2.60 MODULE VREF ERROR.................................................................................................................. 2.61 VOLTAGE INPUT ERROR (VIN)....................................................................................................... 2.62 PREFERENCES MENU.......................................................................................................................2.44 SCREEN SAVER ADJUSTMENT.........................................................................................................2.45 CONTROLS – CAB.................................................................................................................................2.10 COOLER PACKAGE...............................................................................................................................2.84 DEF (DIESEL EXHAUST FLUID, TANK..................................................................................................2.79 DIAGNOSTICS CONNECTION, ENGINE...............................................................................................2.21 DIESEL EXHAUST FLUID (DEF) LEVEL WARNINGS...........................................................................2.69 DIESEL EXHAUST FLUID (DEF) QUALITY WARNING.........................................................................2.70 DIESEL EXHAUST FLUID (DEF) TANK..................................................................................................2.79 DRIVE CONTROL...................................................................................................................................2.12 ECO MODE.............................................................................................................................................2.35 EMERGENCY EXIT/SKYLIGHT..............................................................................................................2.18 ENGINE RPM......................................................................................................................................................2.15 STARTING IN COLD WEATHER..........................................................................................................2.91 ENGINE ACCESS PANELS....................................................................................................................2.75 ENGINE AIR PRECLEANER..................................................................................................................2.83 ENGINE DIAGNOSTICS CONNECTION................................................................................................2.21 ENGINE FAULT CODE MESSAGES - ALERT........................................................................................2.71 ENGINE FAULT CODE MESSAGES - CRITICAL...................................................................................2.58 ENGINE, HOT WATER SHUT OFF VALVE.............................................................................................2.20 ENGINE, STARTING...............................................................................................................................2.89 ENGINE, STARTING IN COLD WEATHER.............................................................................................2.91 ENGINE, STOPPING..............................................................................................................................2.93 FAN SWITCH, ENGINE COOLING.........................................................................................................2.16 FILTER - CAB FRESH AIR......................................................................................................................2.20 FILTER, RECIRCULATING AIR - A/C UNIT............................................................................................2.19 FIRE DETECTION SYSTEM...................................................................................................................2.24 FIRE EXTINGUISHER............................................................................................................................2.20 FOOT CONTROL, CENTER...................................................................................................................2.12 FOOT CONTROL, LEFT.........................................................................................................................2.12 FOOT CONTROL, RIGHT.......................................................................................................................2.12 FUEL REFUELING.........................................................................................................................................2.78 FUEL TANK.............................................................................................................................................2.78 FUSE AND RELAY PANEL CAB......................................................................................................................................................2.22 MAIN.....................................................................................................................................................2.23 FUSE PANEL..........................................................................................................................................2.21 GEAR SHIFT LEVER..............................................................................................................................2.13 HEAD TILT.............................................................................................................................................. 2.11

2.3

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

HORN...................................................................................................................................................... 2.11 HOT WATER SHUT OFF VALVE (ENGINE)...........................................................................................2.20 HYDRAULIC OIL HAND FILL PUMP......................................................................................................2.81 HYDRAULIC OIL TANK...........................................................................................................................2.80 ICONS, PICTOGRAM DESCRIPTIONS........................................................................................... 2.6, 2.7 IGNITION KEY SWITCH.........................................................................................................................2.17 INSTRUMENT PANEL.............................................................................................................................2.14 INTERLOCK RESET...............................................................................................................................2.14 JOYSTICK, LEFT.................................................................................................................................... 2.11 JOYSTICK, RIGHT.................................................................................................................................. 2.11 KEY SWITCH, IGNITION........................................................................................................................2.17 LEVER - GEAR SHIFT............................................................................................................................2.13 LIGHT - DOME........................................................................................................................................2.18 LIGHTER, 24 VOLT.................................................................................................................................2.17 LIGHTS WORK...................................................................................................................................................2.17 LIGHT SWITCH, WORK..........................................................................................................................2.17 MACHINE PREPARATION......................................................................................................................2.92 SYSTEM TEST AND WARM-UP..........................................................................................................2.92 MD3 COMPUTER......................................................................................................................... 2.29, 2.30 MD3 COMPUTER MAIN MENU..............................................................................................................2.31 OPERATING MACHINE................................................................................................................ 2.86, 2.92 PARKING BRAKE SWITCH....................................................................................................................2.17 PICTOGRAM DESCRIPTIONS......................................................................................................... 2.6, 2.7 PRECLEANER, ENGINE AIR.................................................................................................................2.83 PRESSURIZED WATER SYSTEM..........................................................................................................2.18 PRE-START CHECKS............................................................................................................................2.86 RADIO, AM/FM STEREO / CD PLAYER.................................................................................................2.18 REFUELING............................................................................................................................................2.78 SCREEN SAVER ADJUSTMENT............................................................................................................2.45 SEAT.......................................................................................................................................................2.27 SKYLIGHT/EMERGENCY EXIT..............................................................................................................2.18 SPEED CONTROL LEVER.....................................................................................................................2.13 STARTING ENGINE................................................................................................................................2.89 STEREO RADIO/CD PLAYER................................................................................................................2.18 STOPPING ENGINE...............................................................................................................................2.93 THROTTLE SPEED................................................................................................................................2.15 TOWING INSTRUCTIONS......................................................................................................................2.97 TRANSPORTING INSTRUCTIONS........................................................................................................2.99 USB PORT, MD3 COMPUTER...............................................................................................................2.21 WATER SYSTEM, PRESSURIZED........................................................................................................2.18 WINDOWS..............................................................................................................................................2.94 CARE OF POLYCARBONATE WINDOWS..........................................................................................2.94 CAUTIONS........................................................................................................................................2.95 CLEANING INSTRUCTIONS............................................................................................................ 2.95 CONCEALING HAIRLINE SCRATCHES.......................................................................................... 2.95 FIRE PRECAUTIONS....................................................................................................................... 2.95 GRAFFITI REMOVAL........................................................................................................................ 2.95

2.4

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

INSPECTION AND MAINTENANCE................................................................................................. 2.94 RESISTANCE TO CHEMICALS........................................................................................................ 2.94 RESISTANCE TO WATER................................................................................................................ 2.94 CLEANING INSTRUCTIONS FOR GLASS WINDOWS.......................................................................2.96 WORK LIGHTS SWITCH........................................................................................................................2.17

2.5

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

PICTOGRAM DESCRIPTIONS Diagrams in pictorial form are used to represent machine function operation. Some of the symbols are signs, characters, figures, or any components related to the operation of the machine. They are a simple universal language of symbols or pictograms that illustrate a function or component without the use of words. Pictograms are installed on or in close proximity to the switch or device used to activate or deactivate the machine function or they may be a sign used on a warning or indicator light of a function that is operating or advising of an alarm condition.

Examples of these pictograms are the turtle speed such as SLOW =

or FAST =

and the rabbit

that are often used to describe

.

The pictograms used on this machine are as follows: = Adjustment Menu Icon

= Boom Tilt Forward

= Air Conditioner ON

= Brake Pedal

= Air Conditioner OFF = Cigarette Lighter, 24 Volt

= Air Intake Pressure, BOOST

= Control Lever Multiple Direction

= Air Source, Fresh Air

= Control Lever One Direction

= Air Source, Recirculate

= Control Lever Two Direction = Alert Message Symbol

= Accumulator arms OPEN

= Auxiliary Power Outlet 12 V = Accumulator arms CLOSE = Power Outlet 24 V = Clamp arms CLOSE

= Battery Connect, Power ON/Voltage

= Clamp arms OPEN

= Battery Disconnect, Power OFF

= Error Message Symbol

= Boom DOWN

= CREEP STATE or Speed Very Slow

= Boom UP

= Critical Message Symbol = Boom Tilt Back 2.6

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

PICTOGRAM DESCRIPTIONS CONTINUED = Cruise Control

= Engine Air Intake Pressure (Engine Air Intake Filter Restricted)

= DEF (Diesel Exhaust Fluid) = Engine Charge Air Temperature = Differential Locks (ON/OFF) = Engine Coolant Temperature

= Defrost, Front Window

= Engine Diagnostics

= Disc Saw

= Engine Hours

= Disc Saw Hours

= Engine - Percentage of Load

= Disc Saw ON

= Engine Oil Pressure

= Disc Saw Pressure

= Engine Oil Temperature

= Drive Motor Speed

= Engine Start = Drive Pressure, FORWARD

= Engine STOP

= Engine SPEED

= Drive Pressure, REVERSE

= Engine WAIT TO START

= Engine ECO MODE (IF APPLICABLE)

= Engine WARM UP = Engine Anti-stall = Engine WARNING = Engine Anti-stall ON

= Engine Menu Icon

= Engine Anti-stall OFF

= Fan Full ON

= Engine Boost Pressure

= Fan Reverse/Clean 2.7

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher = Hydraulic Oil Temperature

= Fan Speed

= Hydraulic Oil Temperature High = Fan - Ventilation Blower = Hydraulic Oil Level Low = Feller Buncher = Hydraulic Oil Level = Fluid Level High = Hydraulic Oil Level High

= Fluid Level Low = Foot Pedal Control

= Hydraulic Oil Level Low

= Fuel Consumption Rate = Fuel - Diesel

= Hydraulic System Pressure LOAD SENSE

= Fuel Heater

= Imperial/Metric Toggle Symbol

= Fuel Information, Total Usage

= Information Menu Icon

= Fuel Reset / Trip Fuel Information = Information Message Symbol = Fuel Temperature

= Instrument Bulb Test

= Horn

= Interlock Reset ON

= Hydraulic Oil FILTER BYPASS = Interlock Reset OFF = Hydraulic Tank = Lights, Work = Hydraulic Oil GRADE

= Lights, Engine Service

2.8

Tigercat 720G/724G/726G Feller Buncher = Machine Hours

P

Controls and Operation = Winch Free Spool

= Parking Brake = Winch Spool IN = Serial Number = Winch Spool Out

= Speed FAST or Hi = Speed SLOW or LOW = Steer Right

= Steer Left

= Switch ON

= Switch OFF

= Temperature

= Travel Speed

= Vacuum

= Voltage / Battery CONNECT

= Windshield Washer

= Winch ON

2.9

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

CONTROLS – CAB

9

1

2

3

4

15 10 6

7

8

9 14

5

11

12

13

1.

2.

3.

4.

5.

6.

7.

8.

FIRE EXTINGUISHER LEFT-HAND FOOT PEDALS BRAKE PEDAL RIGHT-HAND FOOT PEDALS LEFT-HAND DOOR SAFETY SWITCH LEFT-HAND JOYSTICK SEAT RIGHT-HAND JOYSTICK

M726E-111

9.

10.

11.

12.

13.

14.

15.

FUSE AND RELAY PANEL RIGHT-HAND DOOR SAFETY SWITCH INSTRUMENT PANEL HEATER/AC CONTROLS PILOT MANIFOLD (UNDER CAB) MD3 COMPUTER WARNING LIGHT

CAB COMPONENTS AND CONTROLS 2.10

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

IMPORTANT! This manual is applicable to factory installed machine functions and controls. It does not take into account any changes or modifications made after shipment. Verify all functions before operating this machine.

A B

A

C

1

2

C

M726E-034

LEFT-HAND JOYSTICK

M726E-005

1. STEERING JOYSTICK – LEFT-HAND

Boom Lift Move the joystick BACK to RAISE the boom.

Move the joystick FORWARD to LOWER the boom.

Move the joystick to the LEFT to turn the machine to the LEFT.

Attachment Tilt Move the joystick to the RIGHT to tilt the attachment OUT.

Steering speed can be controlled by the amount the joystick is moved to the right or left. A small movement of the joystick turns the machine slowly and a large movement of the joystick causes the machine to turn very rapidly.

Move the joystick to the LEFT to tilt the attachment IN. Joystick Switches A. Accumulating Arms Open Push the switch to OPEN the accumulator arms.

B. Accumulating Arms Close Push the switch to CLOSE the accumulator arms.

C. Accumulating/Clamp/Shear Arms Open Push the switch to OPEN the accumulator and clamp/shear arms.

Joystick Switches A. Horn – Push to sound warning horn B. Differential Lock, Front Push and hold to LOCK the FRONT differential and provide driving torque to BOTH front wheels.

C. Differential Lock, Rear

RIGHT-HAND JOYSTICK

2. BOOM JOYSTICK – RIGHT-HAND

Steering Move the joystick to the RIGHT to turn the machine to the RIGHT.

B

Push and hold to LOCK the REAR differential and provide driving torque to BOTH rear wheels.

IMPORTANT! Use differential locks ONLY when additional traction is required. Do not continuously drive the machine with differential locks engaged.

Damage to the axles results.

2.11

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation 5

213-20

4

NOTE: As a safety precaution before working on or around the machine. Stop the engine and release pilot system pressure by performing the following steps:

3

1. Close both doors. Turn key switch to RUN position. Do not start the engine. Press interlock reset switch.

Complete either steps 2A or 2B. 2A. Repeatedly apply brake foot pedal 50 times or more.

2B. Engage front and rear differential lock switches and HOLD ON for 30 seconds.

While waiting, repeatedly apply brake foot pedal at least 10 times.

3. Pressure may remain in the system after completing all of the above steps.

Use caution when loosening hydraulic connections.

For additional information, refer to RELEASE PILOT SYSTEM PRESSURE in SECTION 5 of the SERVICE MANUAL.

FOOT PEDALS

RIGHT FOOT CONTROL – DRIVE CONTROL

LEFT FOOT CONTROL

3. RIGHT FOOT CONTROL – DRIVE CONTROL

5. LEFT FOOT CONTROL – CLAMP ARMS

Press the RIGHT foot pedal to drive FORWARD.

Press the left foot pedal to open the clamp arms.

Press the LEFT foot pedal to drive in REVERSE.

Press the right foot pedal to close the clamp arms.

NOTE: The backup horn sounds when traveling in reverse.

6

LEFT JOYSTICK CONTROL 6. LEFT JOYSTICK – CLAMP ARMS (OPTIONAL)

CENTER FOOT CONTROL – BRAKES

Push the switch to the left to open the clamp arms.

4. CENTER FOOT CONTROL – BRAKES Depress the foot pedal to apply the hydraulic brakes.

Push the switch to the right to close the clamp arms.

2.12

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation 8. LEVER - GEAR SHIFT (MACHINES WITH SINGLE DRIVE MOTOR AND TWO SPEED TRANSMISSION ONLY)

7

Shifting gears Gear shifting must not be done while the machine is in motion. The two-speed transmission does not have the capability to mesh moving gears. If the operator shifts gears while the machine is in motion, severe damage occurs to the shift collar and its mating gears and results in a difficulty or inability to shift from one speed to the other.

In order to shift gears with minimum effort and without damaging the transmission, there must be no motion between the gear teeth of the shift collar and the teeth of the low or high speed gear.

M726E-045

7. SPEED CONTROL LEVER The Speed Control Lever allows the operator to set the maximum speed of the machine to maintain a given speed without having to feather the drive pedals. The speed control lever is mounted on the left hand arm rest, below and to the left of the steering joystick.

8

Push the lever forward to increase the maximum speed.

Pull the lever backwards to decrease the maximum speed of the machine.

On machines equipped with a WideRange transmission, Creep is activated hydraulically when the lever is pulled fully backwards.

Creep provides maximum available tractive force to the wheels at a reduced speed.

229-20

GEAR SHIFT LEVER

Shifting Procedure: • Bring the machine to a full stop on level ground.

• Reduce the engine speed to IDLE. • Depress foot break pedal to hold the machine stationary.

• Move the gearshift lever (push or pull) to engage the desired gear.

This lever can be used while the machine is in motion.

Refer also to SPEED CONTROL LEVER ADJUSTMENT in SECTION 3 of THIS MANUAL. NOTE: CREEP MODE is also accessible electronically through the computer control system. Refer to COMPUTER – GENERAL SETTINGS – CREEP STATE.

NOTE: If the gear does not engage, the shifting collar and the speed gear have not aligned. This can be corrected by lightly touching the steering joystick to slightly articulate the machine, causing the collar and gear to mesh and allow for easy shifting.

2.13

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

INSTRUMENT PANEL

1. MD3 COMPUTER AND DISPLAY MODULE The MD3 computer, electronic control and display is the operator interface with the electronic control system. The MD3 is the central unit in the control system which works as both a master controller and a display unit. See MD3 COMPUTER ELECTRONIC CONTROL & DISPLAY later in THIS SECTION for complete details and operation instructions.

1 2

2. ALARM LIGHT

6

3

This light flashes to alert the operator that an alarm condition has been detected and should be dealt with immediately. All messages can be viewed on the computer display module on the instrument panel.

7

4 5

9

8

11

10

Refer to the COMPUTER, MESSAGES in THIS SECTION.

12

3. INTERLOCK RESET SWITCH

M726E-044

This is a two position switch and is used to reactivate the interlock system after it has been deactivated by opening either of the cab doors, or by turning the ignition switch to the OFF position. This system prevents accidental or improper use of the controls from anywhere but the operator's seat.

INSTRUMENT PANEL CONTROLS AND SWITCHES

The instrument panel is located on the right side of the cab beside the operator's seat right armrest. The following controls and switches are mounted on the instrument panel:

With the engine running and both doors closed, press and then release this switch to REACTIVATE the interlock system.

1. MD3 COMPUTER MODULE 2. ALARM LIGHT 3. INTERLOCK RESET SWITCH 4. THROTTLE SWITCH 5. CUTTER SWITCH (saw) 6. FAN SWITCH (engine cooling) 7. WORK LIGHTS SWITCH 8. PARK BRAKE SWITCH 9. BLANKS 10. IGNITION KEY SWITCH 11. 12-VOLT AUXILIARY POWER SUPPLY 12. 24-VOLT LIGHTER

2.14

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation These door interlock switches and the interlock reset switch are safety features and their function must not be defeated in any way.

1 2

4. THROTTLE SPEED SWITCH This is a momentary switch used to increase/ decrease engine speed. Press on bottom of switch to decrease engine speed. Press on top of switch to increase engine speed.

3 4 5 8 10

6

Maintaining Correct Engine rpm.

7

It is most important that the rpm of the engine be correct at all times:

9

Low Idle 900 ±25 rpm (No Load)

11

High Idle 2200 ±25 rpm (No Load)

12

NOTE: The above values are with the hydraulic and engine oil at normal operating temperatures and no functions activated.

5. CUTTER SWITCH – (SAW)

M726E-044

Use this switch to turn the saw ON or OFF. This switch sends a signal to the controller, the controller then sends a signal to the saw valve to turn it on. The saw icon on the computer display is green when the saw is ON.

INSTRUMENT PANEL CONTROLS AND SWITCHES

3A. INTERLOCK SYSTEM SHUT OFF Both doors are equipped with interlock switches to prevent the machine from being operated while the doors are open (interlock system shut off).

M726E-046

3A

ACTUATOR

INTERLOCK SYSTEM SHUT OFF To operate: Close both doors then press and release the interlock reset switch.

Place throttle in HIGH IDLE (1500 rpm minimum) before turning saw ON.

CAUTION

NOTE: When starting the saw and the hydraulic oil is not up to operating temperature, the saw can be turned on at 1500 rpm and as the saw begins to turn the engine speed can be reduced to idle to allow the oil to warm up.

All functions on the machine can now be operated, either as intended or by accidentally touching them.

Once the safety interlock system has been activated, the safety of both the operator and all persons outside the cab becomes the responsibility of the operator.

2.15

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

NOTE: If the engine is turned off or the interlock system has been deactivated with the switch in the ON position, the saw does not start up when the engine is restarted. The switch must be turned off and then back on for the saw to start.

6. FAN SWITCH (ENGINE COOLING) This is a 3-position momentary switch. Along with the MD3 computer, this switch controls the operation of the variable pitch fan.

Always decrease the engine speed to idle for several minutes to allow the saw to slow down before turning the saw off.

FULL ON AUTO

SAW PRESSURE INDICATOR

CLEAN 724G-011

FULL ON – When the switch is in the FULL ON (override) position, the fan control system is overridden and the fan operates at full speed forward. The FULL ON position is intended for use in the event of a temporary failure of the fan control system. AUTOMATIC reversing/cleaning does not function in full on position.

Each increment on the gauge represents approximately 69 bar (1000 psi). During cutting operations the indicator value rises as the blade slows down due to cutting, and fall as the blade speeds up. A 2/3 value or higher indicates that the blade has not attained full speed from the previous cut or has jammed.

Further cutting should be delayed until the indicator value falls below the 1/3 increment to prevent stalling the saw blade during the next cut. Below 1/3 the saw blade is at optimum cutting speed.

AUTO – This position is the normal operating position for the fan control switch. When the switch is in the AUTO position, the fan operates completely in an automatic mode.

NOTE: The MD3 Computer is programmed to reverse fan direction automatically when the fan switch is in the AUTO position. The default setting is reverse every 10 minutes for 10 seconds. The time setting is adjustable.

See COOLING FAN PURGE INTERVAL and COOLING FAN PURGE LENGTH in THIS SECTION for adjustment information.

CLEAN – When the switch is pressed momentarily to the CLEAN position, the fan direction is reversed. Reverse direction is used to help clean the charge air cooler, radiator, oil cooler, A/C condenser, and air intake door screen. By reversing the fan blade direction, air flow is propelled in the opposite direction, thereby helping to force dust and debris off of the heat exchanger cores and screens.

It is also important to manually clean debris from the machine on a regular basis to maintain low machine operating temperatures.

Refer toCLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION.

2.16

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

1 INTERLOCK SWITCH

2

ACTUATOR M726E-046

INTERLOCK SYSTEM SHUT OFF As part of the interlock system this machine automatically engages the parking brake whenever a cab door is open. This prevents accidental or improper operation of the controls from anywhere but the operator's seat.

6

3

7

4 5

9

8

11

10

12

Refer also to COMPUTER – MESSAGES – CRITICAL – INTERLOCK SYSTEM in THIS SECTION. 9. OPTIONAL SWITCH LOCATIONS 10. IGNITION KEY SWITCH This is a three-position switch labelled OFF/ RUN/START.

INSTRUMENT PANEL M726E-044 CONTROLS AND SWITCHES 7. WORK LIGHTS SWITCH

OFF – All electrical power fed through the ignition switch is turned OFF.

This is a two position switch to turn on the work lights.

8. PARKING BRAKE SWITCH

RUN – Connects the battery to electrical functions used for machine operation.

P

START – Used to energize the starter motor to start the engine.

This is a two position switch which operates a driveline brake.

11. 12-VOLT AUXILIARY POWER SUPPLY

Press the top of this switch (ON) to ENGAGE the parking brake. The parking brake icon on the main menu of the computer display illuminates when the parking brake is engaged.

A 12-volt outlet with 20-amp capacity for portable devices such as cell phones.

12. 24-VOLT LIGHTER Cigar/cigarette lighter.

Press the bottom of this switch (OFF) to DISENGAGE the parking brake.

NOTE: The parking brake must be ENGAGED to START the engine, and DISENGAGED to DRIVE the machine.

NOTE: The interlock system prevents the machine from being driven and function controls from being operated while the parking brake is ENGAGED.

2.17

Controls and Operation HOSE

Tigercat 720G/724G/726G Feller Buncher BLUETOOTH FUNCTIONS

WATER SHUT OFF VALVE (SHOWN CLOSED)

The radio includes built in Bluetooth technology that allows you to connect it to Bluetooth devices for streaming audio playback and hands free calling. The hands free microphone is located in the radio enclosure and is connected to the radio.

13

See the manufacturer's owners manual for complete operation instructions.

PRESSURIZED WATER SYSTEM 196-16A CONTROL VALVE (UNDER SEAT) 13. VALVE – PRESSURIZED WATER SYSTEM

15

Turn the hand operated ball valve (shut off valve) under the seat to the ON position to draw water from the 40 L (10.5 gal US) pressurized holding tank at the rear of the machine. When not in use turn the water supply OFF at this valve and relieve the pressure in the rubber hose, under the operator's seat.

A 726E-070

AIR CHARGE VALVE

15. SKYLIGHT/EMERGENCY EXIT Provides tree top visibility and serves as a third cab exit should the two doors become blocked. There are two retaining handles (A) on the inside and two on the outside to allow removal of the hatch from either side. These handles should only be hand tightened, to allow them to be unscrewed in case of an emergency.

PRESSURE GAUGE

196-9A

PRESSURIZED WATER SYSTEM

The pressure gauge on the side of the seat should read 4 bar (60 psi).

Refer to PRESSURIZED WATER SYSTEM MAINTENANCE in SECTION 3 OF THIS MANUAL. 16

14

17

M726E-049

HANDS FREE MICROPHONE

16. LIGHT – DOME The switch is located on the side of the dome light fixture.

726G-001

14. AM/FM STEREO RADIO/CD PLAYER

17. RADIO – CB (IF EQUIPPED)

With two front mounted speakers.

Consult the manufacturer's instruction manual for additional information.

The AM/FM/WB/CD/RBDS/USB SiriusXM Ready and iPod Ready Stereo with Bluetooth is located on the right rear of the cab roof.

See the manufacturer's owners manual for complete operation instructions.

2.18

Tigercat 720G/724G/726G Feller Buncher B

A

C

Controls and Operation

D

19

E M726E-050

18. AIR CONDITIONER/HEATER The controls on this panel are used to adjust the heating and air conditioning temperature for operator comfort in the operator's cab.

20 M726E-001

A. A/C On/Off Switch This is a push/on push/off power switch.

A/C HEATER VENTS AND FILTER 19. AIR VENTS

C. Fan speed – OFF/LOW/MED/HIGH This is a rotary, four-position switch for the fan speed.

The Air Conditioner/Heater package has seven air outlets in the cab.

20. FILTER, RECIRCULATING AIR – A/C UNIT

C. Air Source – Two-position This is a rotary, two-position switch to select either outside fresh air, or to recirculate inside air. To maximize use of A/C place the control in the recirculate mode.

When the AIR SOURCE switch is in the RECIRC AIR position, air in the cab is drawn into the A/C HEATER unit through this filter and recirculated. The filter is located at the base of the A/C unit, below the right arm rest of the operator’s seat. It should be cleaned or replaced every 125 hours. Remove the two thumb screws in the filter box cover to access the filter.

D. Heat – Variable This is a variable, rotary dial to adjust the amount of heated air for the cab. Make sure this control is off, when using the air conditioning.

E. Air Conditioning – Variable This is a variable, rotary dial to adjust the temperature of cooled air for the cab.

NOTE: To maximize the efficiency of the air conditioning, the heat control dial on the control panel must be rotated to the OFF position. Refer also to HOT WATER SHUT OF VALVE in THIS SECTION. IMPORTANT! It is recommended that when the A/C system is not in use, it is operated for a period of 5 minutes every 2 weeks. This circulates oil to all components of the system.

2.19

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

GAUGE

21

726E-037

23

FRESH AIR FILTER

21. FILTER – CAB FRESH AIR When the AIR SOURCE control knob (C on previous page) on the A/C Heater control panel is in the FRESH AIR position, outside air is drawn into the cab A/C Heater unit through this filter and mixed with interior air from the cab. The filter is located in the rear of the cab roof and accessible from outside the cab. It should be checked every 125 hours. This is done by removing 6 bolts and removing the air inlet cover. Next remove 2 bolts and remove the filter retainer. This allows access to the filter.

M726E-052

23. FIRE EXTINGUISHER A portable fire extinguisher is located in operator's cab. The extinguisher should be checked daily to ensure that it is charged. The pointer on the charge gauge should point to the green region. If the indicator falls out of this green area, the extinguisher should be serviced immediately.

The RECIRCULATING AIR FILTER and the CAB FRESH AIR FILTER may require cleaning more frequently under extreme operating conditions.

22

Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. Refer to the fire extinguisher manufacturer's manual for proper usage, additional information, and recommended inspection and maintenance intervals.

ENGINE

HOSE TO A/C HEATER UNIT

724G-020

24

HOT WATER SHUT OFF VALVE

22. HOT WATER SHUT OFF VALVE (ENGINE)

726E-071

To maximize the efficiency of the air conditioning, the heat control knob (D) on the A/C Heater control panel must be rotated to the OFF position. During times when cab heating is not required the hot water shut off valve, on the heater hose from the engine, should also be closed to prevent hot water from seeping through the A/C unit, thereby reducing the effect of the cooling system.

FRONT OF CAB INTERIOR

24. REAR VIEW MIRROR A convex rear view mirror is located in the front of the roof to assist in the view out the rear windows. Use the mirror when driving the machine in reverse.

2.20

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

25

28

26

27

M726E-053 724E-104

CAB FUSE ACCESS

improper shut down and power down.

25. BATTERY DISCONNECT SWITCH

26. FUSE PANEL – CAB

This manually operated switch is located in the top of the battery compartment on the lefthand rear corner of the machine. It completely disconnects most electrical circuits on the machine from the battery.

The fuses, diodes, resistors and relays are located behind a panel below the instrument panel. Press the latch button to open the door to access the fuses, diodes, resistors and relays. See FUSE AND RELAY PANEL – CAB in THIS SECTION for more detail.

Turn the battery disconnect switch off if the vehicle is to be parked for an extended period of time (Example – overnight).

27. USB PORT – MD3 COMPUTER This USB port is used to access the MD3 computer. A laptop with appropriate IQAN software can be plugged into this port for software updates, diagnostics and some adjustments.

NOTE: This machine is equipped with an After Run/ Accessory Relay which delays by 90 seconds the power disconnect to engine related fuses and relays. Whenever the engine is stopped all DEF solution is pumped back to tank before the engine power system is turned off. This process takes approximately 90 seconds. Refer to SELECTIVE CATALYTIC REDUCTION SYSTEM in SECTION 3 of THIS MANUAL for more information.

NOTE: This USB connection should only be used by a trained service technician.

Refer to COMPUTER in SECTION 6 of the SERVICE MANUAL for more information and safeguards related to the use of this port.

28. ENGINE DIAGNOSTICS CONNECTION

IMPORTANT! Only use the battery disconnect switch to shut off a running machine in an emergency. A fault code is logged by the ECU on the engine for

Plug a remote electronic diagnostic device into this connection such as a laptop computer with appropriate engine manufacturer’s programming to perform engine performance analysis and tuning.

NOTE: This operation can only be performed by a trained service technician.

2.21

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation FUSES AND RELAYS

M726E-053

FUSE AND RELAY PANEL – CAB Each major circuit on the vehicle is protected against current overload by fuses. The fuses and relays are located in two places on the machine.

The Cab fuse and relay panel is located in the compartment just below the instrument panel as shown above. The main fuse and relay panel is located in the battery compartment in the left rear corner of the machine.

LABEL – FUSE AND RELAY PANEL – CAB 2.22

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

MAIN FUSE AND RELAY PANEL

BATTERY COMPARTMENT MAIN FUSE AND RELAY PANEL – BATTERY COMPARTMENT 724G-013

This main fuse and relay panel is located in the electrical box in the battery compartment in the left rear corner of the machine.

LABEL, MAIN FUSE AND RELAY PANEL, BATTERY COMPARTMENT 2.23

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation FIRE DETECTION SYSTEM

FIRE DETECTION SYSTEM COMPONENTS

NOTE: This system is for FIRE DETECTION ONLY, it is not a fire suppression system.

The Fire Detection System consists of the following main components:

In no way does the installation of this fire detection system reduce the need to adhere to the guidelines given in the FIRE PREVENTION section of this manual.

WARNING LIGHT

The fire detection system is only a warning system and does not extinguish a fire. If a fire is detected it must be extinguished manually using certified fire fighting equipment.

SYSTEM OPERATION There are 3 thermostats mounted in the engine and hydraulic area that are connected to the computer control system. The thermostats are automatic heat detection devices and are set to close at 177°C (350°F). When a thermostat closes it sends a signal to the computer which activates an audible alarm, flashing warning light and a visual message on the computer screen indicating that a fire has been detected.

M726E-044

WARNING LIGHT AND BUZZER – In cab, warning light is on the instrument panel. The buzzer (not shown) is in the compartment below the instrument panel.

724G-021

THERMOSTAT

M726E-134

IN CASE OF FIRE DETECTION ALARM: 1. Stop machine operation, park machine in a safe location and lower the load to the ground.

2. Shut down the engine.

HYDRAULIC PUMP COMPARTMENT

3. Remove the portable fire extinguisher from its storage location.

HEAT THERMOSTAT – In hydraulic pump compartment

4. Exit the cab immediately taking the fire extinguisher with you.

724G-061

5. Inspect the machine for cause of the Alarm.

THERMOSTAT

Refer to WHAT TO DO IN CASE OF A MACHINE FIRE and WHAT TO DO AFTER A FIRE in SECTION 1 of this manual.

ENGINE COMPARTMENT – LH SIDE HEAT THERMOSTAT – Rear LH side, in engine compartment.

2.24

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation Weekly: • Inspect all parts for damage, rust, corrosion or dirt. Replace any damaged parts immediately.

• All components are in place and unobstructed.

THERMOSTAT

• Check fire detection electrical network for cut, frayed, stripped or damaged wires.

724E-096

ENGINE COMPARTMENT – RH FRONT HEAT THERMOSTAT – Above front of engine.

• Ensure thermostats are clean.

Every Month: • Turn ignition switch on. Next, use a heat source (heat gun) to apply heat to each of the thermostats (for approximately 30– 40 seconds only) to confirm warning system light and buzzer operate and that the following message displays on the computer screen.

5 AMP FUSE

M726E-053

FUSE PANEL – IN CAB

ELECTRICAL POWER SUPPLY Power is supplied to the system by a 5 Amp fuse located in the fuse and relay panel.

M726E-134

KEEP TIP OF HEAT GUN BACK 76.2 mm–127 mm (3"–5")

SYSTEM TEST IMPORTANT! The following test is only to be performed on machines with Fire Detection system. If this test is performed on machines with a Fire Suppression system, it activates the extinguishers.

Daily: • The following message is displayed on the computer screen if there is a bad connection within the system. Repairs should be made immediately.

HEAT GUN

APPLY HEAT TO THIS AREA ONLY. THERMOSTAT

726E-018

WHEN TEST IS COMPLETE WIPE THERMOSTAT OFF WITH A COOL WET CLOTH.

HEAT TESTING THERMOSTAT USING A HEAT GUN

NOTE: Do not use butane torches or any type of flame tool to heat-test the sensors. The intense heat from a flame tool can damage the sensor.

M726E-135

2.25

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher WARNING LIGHT

M726E-044

FIRE DETECTION WARNING LIGHT

726E-019

FIRE EXTINGUISHER THERMOSTAT

724E-095

ENGINE COMPARTMENT – RH SIDE

THERMOSTAT

THERMOSTAT

724G-001

724G-061

724G-021

ENGINE COMPARTMENT – LH SIDE

SERVICE COMPARTMENT – CENTER

FIRE DETECTION SYSTEM AND FIRE EXTINGUISHER LOCATION

AVOIDING DAMAGE AND FALSE SIGNALS DURING MACHINE SERVICE: Pay attention to the location of the components of the fire detection system. Take care not to damage heat sensors or wiring, this includes hitting, cutting, bending, denting, etc. Damage to heat sensors due to shock could make the system inoperable and/or cause false signals. Cut, pinched, or kinked wiring could make the system inoperable and/or cause false signals.

If any of the components are damaged, replace them immediately before operating the machine.

WARNING Failure to follow these instructions and guidelines may result in serious bodily injury, death, and property damage.

In addition thermostats are sensitive to heat from welding torches, steam cleaning or other outside sources which may create a false detection by the system.

FIRE PREVENTION Refer to Section 1 of this manual for fire prevention information/techniques.

2.26

Tigercat 720G/724G/726G Feller Buncher OPERATOR’S SEAT – AIR RIDE

Controls and Operation RIDE ADJUSTMENT PROCEDURES After adjusting height, the ride adjustment should be made by pulling or pushing the air ride control valve knob.

To Raise Push ride adjustment control to inflate air spring to obtain desired height.

To Lower Pull ride adjustment control to deflate air spring to obtain desired height.

SEAT ADJUSTMENTS

LUMBAR HORIZONTAL ADJUSTMENT (NOT SHOWN) BACK ANGLE ADJUSTMENT

2-WAY ADJUSTABLE LUMBAR For forward and backward displacement, rotate horizontal adjustment knob.

BACK ANGLE ADJUSTMENT Rotate back angle adjustment knob to place seat at the desired angle.

FORWARD/BACKWARD SLIDE Move and hold forward/backward slide lever.

Roll seat forward or backward to the desired position relative to the foot pedal controls.

HEIGHT ADJUSTMENT LEVER

RIDE ADJUSTMENT KNOB 720E-001

ARMREST ADJUSTMENT LUMBAR HORIZONTAL ADJUSTMENT

FORWARD/BACKWARD SLIDE LEVER

WARNING The seat belt supplied with this seat must be used at all times when operating this machine.

ADJUSTMENTS HEIGHT ADJUSTMENT PROCEDURES The spring-assisted height adjustment is controlled by the height adjustment lever located on the front left side of the seat chassis.

The 4 height settings — top, bottom and two in-between, provide a total height adjustment of 75 mm (3 in).

ARMREST ADJUSTMENT 332-6

VIEW FROM RIGHT REAR OF SEAT

Each armrest has 2 adjustments to place it in the required position. Loosen adjustment locking wing bolts to reposition armrest height and forward/ backward position.

To Raise Firmly lift up on the height adjustment lever.

When the lever releases, hold it up while partially lifting the operator’s body weight from the seat.

When the seat is at the desired height, FIRMLY PUSH DOWN on the lever until the seat locks (a click should be heard).

To Lower Firmly lift up on the height adjustment lever.

When the lever releases, partially apply operator body weight to the seat until the seat is at the desired height. FIRMLY PUSH DOWN on the lever. Hold lever down until the seat locks into position (a click should be heard).

2.27

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

RIDES TOO SOFT OR BOTTOMS OUT AND PINCHES OPERATOR The air ride control valve has under pressurized the seat air suspension ride adjustment Insufficient pressure exaggerates the knee-action movement of the seat. This usually happens because the operator is trying to lower the seat by decreasing the amount of air pressure instead of using the Height Adjustment lever. Refer to height adjustment.

BACK ANGLE ADJUSTMENT KNOB LUMBAR ADJUSTMENT

AIR RIDE ADJUSTMENT KNOB

SEAT TOO HIGH/SEAT TOO LOW There are several things which can cause improper seat height. Refer to the HEIGHT ADJUSTMENT and adjust seat to the desired position. If the proper height cannot be reached using one of the four height adjustment settings, it may be necessary to install the seat on a higher base.

OPERATOR’S LEGS FALLING ASLEEP

FORWARD/BACKWARD SLIDE LEVER M726E-033

The seat is adjusted too high, and the air ride control valve has under pressurized the seat air suspension ride adjustment, resulting in the operator sitting in a bucket. Refer to Height Adjustment and Ride Adjustment.

HEIGHT ADJUSTMENT LEVER

SEAT ADJUSTMENTS

PROBLEMS AND CORRECTIVE ACTION Ride is too stiff/seat tends to push or throw operator forward The air ride control valve has over pressurized the seat air suspension. This typically happens because the operator is trying to use the air suspension to adjust the ride height rather than using height adjustment lever to raise the seat.

Refer to height adjustment.

2.28

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation MD3 COMPUTER

COLOR DISPLAY

ARROW (SCROLL) UP OK (ENTER) ARROW (SCROLL) DOWN

F1

F2

F3

F4

ESC (BACK)

MENU

MD3 COMPUTER, ELECTRONIC CONTROL AND MAIN DISPLAY

MD3 COMPUTER MD3 COMPUTER

ELECTRONIC CONTROL & DISPLAY The MD3 computer, electronic control and display is the operator interface with the electronic control system. The MD3 is the central unit in the control system which works as both a master controller and a display unit. It has an 89 mm (3.5 in) backlit color graphic transflective display for reading system information.

The front of the MD3 consists of a control panel with a display and nine buttons. The buttons are arranged on the bottom and right hand side of the display.

• F1 through F4 function buttons,

,

M726E-044

,

• OK button .

Pushing this button equals Enter, saves the value or confirms the selection you have made.

, .

Programmed buttons that are configured by program software to bring up a display page, bring up an adjustment group or act as an input.

• Up and down arrow buttons

• Menu button .

Always brings up the Menu page. It is not programmable.

.

• Esc or BACK button

Navigation buttons that are used to scroll through selections on a menu page. The buttons are configured by program software to bring up a display page, bring up an adjustment group or act as a virtual input.

.

Returns you to the previous display page. May be configured by program software to bring up a display page, bring up an adjustment group or act as a virtual input.

2.29

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

1 2 5 8 9 7

724G-001

6

4

3

MD3 COMPUTER, SYSTEM MAIN COMPONENTS AND CONNECTIONS

MD3 COMPUTER CONTROL SYSTEM The MD3 computer control system is part of a network of components (shown above). The system is made up of the following components: 1. MD3 Computer and Display Module 2. Electronic Joystick Handles 3. Cab Expansion Module1 (XA2-A0)

3

4. Chassis Expansion Module 2 (XA2-A1) 5. Engine ECU (Tigercat FPT NEF 6.7 L) 6. Pilot Manifold Electronic Solenoids

M726E-123

7. Saw Control Valve Electronic Solenoids

INSIDE RIGHT CAB DOOR

8. USB Port 9. Engine Diagnostics Connection

4

NOTE: Various controls, switches, and sensors not shown.

The MD3 computer is the main controller in the system. The MD3 computer program is the operating system for the computer display as well as the control system for the engine operating parameters.

The engine electronic control module provides electronic information to the MD3 computer via the J1939 CAN BUS link. This information is displayed on the computer display.

724E-099

NOTE: The computer control system is softwarebased. This software may be updated after the machine is in service as a part of on-going product improvement programs and service newsletters.

The information contained in this manual is accurate at the time of printing. Improvements to the machine and/or software are on-going and may not be covered. In these cases contact your Tigercat dealer for appropriate information.

2.30

BEHIND CAB RIGHT SIDE

Tigercat 720G/724G/726G Feller Buncher 1

2

4

3

Controls and Operation 6

5

16

7

17 15

8 14

9 13

10

724G-035A

11

12

MAIN MENU

MD3 COMPUTER MAIN MENU

14. OIL GRADE

1. INTERLOCK RESET – ON/OFF

15. HYDRAULIC OIL TEMPERATURE GAUGE *

2. PARK BRAKE – ON/OFF

16. FUEL LEVEL GAUGE **

3. CREEP STATE – ON/OFF

17. DEF LEVEL INDICATOR * Note that gauge symbol colour changes indicate temperature range (blue=low, white=normal, red=high)

4. SAW INDICATOR – ON/OFF 5. HYDRAULIC OIL FILTER BYPASS 6. TIME

IMPORTANT! To prevent damage to the machine, it is not recommended to run the attachment circuit or work the machine hard when the hydraulic oil

7. SAW PRESSURE GAUGE 8. ENGINE TACHOMETER rpm 9. ENGINE MENU – Press F1 to select

temperature gauge symbol is blue, indicating cold oil. ** Note yellow fuel symbol indicates fuel level low.

10. ADJUSTMENT MENU – Press F2 to select 11. INFORMATION MENU – Press F3 to select 12. ENGINE COOLANT TEMPERATURE * 13. ALARM INDICATORS – Press F4 to select

2.31

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

ENGINE MENU

The engine functions on display are as follows: Charge Air Temperature - °F or °C Engine Coolant Temperature - °F or °C

From the main menu press the F1 button to select the engine display.

Engine Oil Temperature - °F or °C

When selected the engine menu icon is on display and the engine functions is also displayed.

Fuel Temperature - °F or °C Engine Speed - rpm Turbocharger Boost Pressure - psi or bar Engine Oil Pressure - psi or bar Engine Load - % Engine Hours - h Voltage - V Fuel Rate - US gph or L/h (instantaneous)

The fuel information on display is as follows: Total fuel information Trip fuel information 2.32

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation 1.

Charge Air Temperature (°F or °C) This display indicates the charge air cooler temperature reading.

If temperature rises above the recommended temperature, alarm will sound, check the following:

• Plugged cooler package air intake screens in doors access panel

•

Plugged charge air cooler.

DO NOT continue to operate machine.

Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION. Refer also to the COMPUTER – MESSAGES in THIS SECTION.

ENGINE FUNCTIONS Press the F1 button to toggle ECO MODE on and off. (724G/726G only)

2.

Engine Coolant Temperature (°F or °C) This display indicates the current engine coolant temperature.

Press the F2 button to toggle between metric and imperial units of measure.

If temperature rises above the recommended temperature, alarm will sound, check the following:

Press the F3 button to select the fuel information display.

• Plugged cooler package air intake screens

Press the back button again to return to the main menu.

in doors and access panels

• Plugged oil cooler.

DO NOT continue to operate machine.

Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION.

NOTE: Coolant temperature can also be monitored using the engine coolant temperature gauge shown on the main menu.

Note also that gauge symbol colour changes indicate temperature range (blue=low, white=normal, red=high) Refer also to the COMPUTER – MESSAGES in THIS SECTION.

2.33

Controls and Operation 3.

Engine Oil Temperature (°F or °C)

Tigercat 720G/724G/726G Feller Buncher 6.

This display indicates air intake manifold boost pressure in psi.

This display indicates the current engine oil temperature.

If temperature rises above the recommended temperature, alarm will sound, check the following:

7.

If oil pressure falls too low, an alarm will sound.

Refer to the COMPUTER – MESSAGES in THIS SECTION.

in doors and access panels

DO NOT continue to operate machine.

8.

4.

Fuel Temperature - °F or °C This display indicates the fuel temperature.

5.

9.

Engine Hours - h This display indicates the total number of hours the engine has run.

10.

ENGINE VOLTAGE (VOLTS) This display indicates engine voltage levels.

Engine Speed (rpm)

Normal operating range for the electrical system is between 20 and 30 volts.

This display indicates engine speed in rpm.

Maintaining Correct Engine RPM

If engine voltage goes outside the normal range, an alarm will sound. Refer to COMPUTER – MESSAGES in THIS SECTION.

It is important that the engine speeds be correct at all times: N67 Tigercat by FPT Engine: Low Idle 900 RPM (No Load) High Idle 2200 RPM (No Load)*

A reading in excess of 30 volts indicates a possible faulty voltage regulator.

A reading less than 20 volts indicates a possible faulty battery or alternator.

NOTE: The above values are measured with the hydraulic and engine oil at normal operating temperatures and no functions activated.

Engine idle speed defaults to 900 rpm when the engine is started.

Eng % Load (%) This display indicates the percentage of maximum engine load currently in use.

Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION. Refer also to the COMPUTER – MESSAGES in THIS SECTION.

Oil Pressure (psi or bar) This display indicates engine oil pressure.

• Plugged cooler package air intake screens • Plugged radiator.

Boost Pressure (psi or bar)

IMPORTANT! 24 VOLT ELECTRICAL SYSTEM 11.

Fuel Rate -US gph or L/h(instantaneous) This display indicates the current rate of fuel consumption in gallons per hour.

NOTE ALSO: Engine speed can also be monitored using the engine tachometer gauge shown on the main menu.

2.34

Tigercat 720G/724G/726G Feller Buncher

ECO MODE FUNCTION (724G/726G ONLY)

Controls and Operation

FUEL INFORMATION FUNCTIONS

Press the F1 button to toggle ECO MODE on and off.

Press the F2 button to toggle between imperial and metric units of measure.

Press the back button again to return to the main menu.

Press the F3 button to reset the trip fuel used and trip average fuel rate functions.

When ECO MODE is ON the icon is illuminated in green and will also be shown on the main screen. Placing the engine in ECO MODE adjusts engine settings for higher fuel efficiency with a corresponding reduction in available engine horsepower.

Press the back button to return to the engine display.

Press the back button again to return to the main menu.

1.

Total fuel information This display indicates the total fuel used during the life of the machine.

• • •

2.

Total fuel used US gal or L, Total hours h Total fuel rate US gph or L/h.

Trip fuel information

This display indicates the average fuel consumption rate for the machine since last reset.

• • •

Trip fuel used US gal or L, Trip hours h Trip fuel rate US gph or L/h.

FUEL GAUGE The fuel level gauge is shown on the main menu.

Note that a yellow fuel symbol indicates fuel level low.

2.35

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher To make changes to these settings Press F1 button to select the General Settings Menu from the ADJUSTMENT MENU.

ADJUSTMENT MENU

From the main menu press F2 button to view the GENERAL SETTINGS.

The General Settings menu appears on the display. The selections available are as follows: • Oil Grade Selection • Fan Clean Frequency • Fan Clean Duration • Creep State Use the arrow up/down buttons to scroll to the desired selection then press the OK button to make the selection.

SEE GENERAL SETTINGS in THIS SECTION for more details.

The current general settings displayed are as follows: •

Hydraulic Oil Grade

• Fan Clean Frequency – minutes • Fan Clean Duration – seconds

2.36

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

GENERAL SETTINGS

Press the Menu button menu.

The General Settings menu appears on the display. The selections available are as follows:

to access the main

• Oil Grade Selection • Fan Clean Frequency • Fan Clean Duration • Creep State Use the arrow up/down buttons to scroll to the desired selection then press the OK button to make the selection.

From the main menu page press the F1 button (Adjust) to access the Adjust menu.

Use the arrow up/down buttons to scroll to General Settings then press the OK button to set selection.

2.37

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

OIL GRADE SELECTION

FAN CLEAN FREQUENCY

Scroll to the Oil Grade Selection in the General Settings menu. Press the OK button to make adjustments.

Scroll to the Fan Clean Frequency selection in the General Settings menu. Press the OK button to make adjustments.

In the Oil Grade menu the available choices are: • ISO 22

The Fan Clean Frequency menu appears. The setting value can be adjusted between 5 minutes and 20 minutes. This is the setting for auto reverse of the cooling fan to go into the clean mode (reverse/clean). The factory default setting is every 10 minutes. Press the arrow up or arrow down to scroll to the desired selection and press the OK button when desired value is selected.

• Petro Can MV 22 • ISO 32 • Petro Can MV 26 • ISO 46 • Esso Univis Ultra 46

Press the back button to return to the general settings menu or back button twice to return to the adjustment menu. Press the Back button again to

• Petro Can MV 60 • ISO 68

return to the main menu.

Use the arrow up/down buttons to scroll to the desired selection then press the OK button to set selection.

Press the back button to return to the general settings menu or back button twice to return to the adjustment menu. Press the Back button again to return to the main menu.

2.38

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

COOLING FAN CLEAN DURATION

CREEP STATE

Scroll to the Fan Clean Duration selection in the General Settings menu. Press the OK button to make adjustments.

Scroll to the Creep State selection in the General Settings menu. Press the OK button to make adjustments.

The Fan Clean Duration menu appears. The setting value can be adjusted between 10 seconds and 30 seconds. This is the time the cooling fan remains in the clean (reverse/clean) mode. The factory default is 10 seconds. Press the arrow up or arrow down to scroll to the desired selection and press the OK button when desired value is selected.

The Creep State menu appears. The setting value can be adjusted Off or On. The factory default is Off. Press the arrow up or arrow down to scroll to the desired selection and press the OK button when desired value is selected.

Press the back button to return to the engine settings menu or back button twice to return to the adjustment menu. Press the Back button again to return to the main menu.

Press the back button to return to the engine settings menu or back button twice to return to the adjustment menu. Press the Back button again to return to the main menu.

Note that on machines equipped with a WideRange transmission, Creep is also accessible hydraulically using the speed control lever. Refer to SPEED CONTROL LEVER in THIS SECTION.

2.39

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

INFORMATION MENU

When selected the information functions displayed are as follows: Machine Voltage – V

Press the F3 button to access the information menu.

Disc Saw Pressure – psi or bar Disc Saw Hours – hrs (Total or Trip)* Serial Number Machine Hours - h Hydraulic Oil Temp -°F or °C Press the F1 button to select the Cutter Functions display Press the F2 button to toggle between imperial and metric units of measure.

Press the F3 button to toggle between Total and Trip Disc Saw Hours* Press the back button to return to the main menu.

2.40

Tigercat 720G/724G/726G Feller Buncher INFORMATION FUNCTIONS 1.

Hydraulic oil grade information is shown on the main menu below the hydraulic oil temperature gauge.

Machine Voltage – V This display indicates machine voltage readings which are voltage levels in the electrical system.

2.

Operating outside the recommended operating range will shorten hydraulic component life.

Disc Saw Pressure – psi or bar

Refer to COMPUTER – ADJUSTMENT MENU – OIL GRADE SELECTION in THIS SECTION for hydraulic oil grade selection settings information.

This display indicates disc saw pressure.

3.

Disc Saw Hours – Hrs (Total Or Trip) This display indicates disc saw hours Either total or trip depending on the (F3) toggle* on this screen.

4

Refer also to HYDRAULIC OILS in SECTION 3 of THIS MANUAL for hydraulic oil operating range information.

Refer also to COMPUTER – MESSAGES - CRITICAL – HYDRAULIC OIL TEMPERATURE HIGH in THIS SECTION for more information about the hydraulic oil temperature message.

Serial Number This display indicates machine serial number.

5.

Controls and Operation

Machine Hours - h This display indicates the total number of hours the machine has run.

6.

Hydraulic Oil Temperature (°F or °C) This display indicates the current hydraulic oil temperature registered in the main hydraulic tank.

If the temperature rises above the recommended operating range for the type of hydraulic oil in use, alarm will sound, check the following: • • • • • •

Plugged oil cooler Malfunction in a hydraulic system High loads on the hydraulic system Malfunction of the cooling fan Low hydraulic oil level Correct Hydraulic Oil Grade Selection

CUTTER FUNCTIONS Press the F1 button to select the Cutter Functions display from the Information Menu.

The following information is displayed:

If hydraulic oil temperature rises above the recommended operating range DO NOT continue to operate the machine.

Saw Pressure Gauge – psi or bar Engine Speed – rpm

NOTE ALSO: Hydraulic oil temperature can also be monitored using the hydraulic oil temperature gauge shown on the main menu.

Note also that gauge symbol colour changes indicate temperature range (blue=low, white=normal, red=high)

Hydraulic Oil Temp -°F or °C Engine Coolant Temperature - °F or °C

The alarm must not be used to monitor the hydraulic oil. The operator must use the hydraulic oil temperature gauge on the main menu of the computer display, together with the operating range chart in SECTION 3 to prevent damage to the hydraulic system.

2.41

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

MAIN MENU PAGE

Press the menu button menu page.

to go to the main

The main menu page displays the following selections: • Adjust – Select F1 • Measure – Select F2 • Preferences – Select F3 • Info – Select F4 To return to the Main menu press the back button.

2.42

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

MEASURE MENU

The following menu items can be selected.

• Cutter Control • Voltage Inputs • Digital Inputs • Current Outputs • Digital Outputs • Engine J1939 Inputs • CAN Outputs • Fan Control • Fault Management • Options • Boom Float • Hours

From the Main Menu press the F2 button to access the MEASURE MENU.

Use the up arrow or down arrow button to select the menu item. Press OK to confirm the selection.

This menu is used by Tigercat service technicians.

Refer to SECTION 6 of the SERVICE MANUAL for more information.

Press the back button Main Menu page.

2.43

(or F1) to return to the

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher DISPLAY ADJUSTMENT

PREFERENCES MENU

After selecting F1 the display adjustment screen opens and the following adjustments can be selected:

From the main menu page press the F3 button (Preferences) and the preferences menu page appears.

RETURN TO MAIN MENU – Select F1 BACKLIGHT ADJUSTMENT – Select F2 SCREEN SAVER – Select F3 BACKLIGHT ADJUSTMENT

The following menu items can be selected.

• Display • Date/Time • Language

After selecting F2 the backlight adjustment screen opens. Use the Arrow Up or Arrow Down buttons to adjust the display backlight. The range is 10 to 100. The default setting is 100.

When the desired setting is selected press the OK button. A good rule to follow is the lower the number the longer the life of the display unit.

2.44

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

SCREEN SAVER ADJUSTMENT

DATE/TIME ADJUSTMENT

Select F3 to open the screen saver adjustment screen. Use the Arrow Up and Arrow Down buttons to scroll through the choices. Three choices are available:

Press F2 to select the DATE/TIME adjustments in the PREFERENCES menu.

• SCREEN SAVER OFF • DIMMED – Time out 5 seconds • BLACK – Time out 5 seconds

The DATE/TIME menu screen turns on. Two choices are available for adjustment: DATE – Select F1 TIME – Select F2 After making a selection press the OK button to confirm selection and press the back button to return to the main menu screen.

2.45

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

DATE ADJUSTMENT

Press F1 to select DATE. Use the Arrow Up or Arrow Down to scroll through the YEAR list to select the year. Press OK to confirm year selected.

When the month has been confirmed, the display highlights the DAY. Use the Arrow Up or Arrow Down to select the day. Press OK to confirm day selected.

When the year has been confirmed, the display highlights the MONTH. Use the Arrow Up or Arrow Down to select the month. Press OK to confirm month selected.

The display returns to the DATE TIME menu.

2.46

Tigercat 720G/724G/726G Feller Buncher TIME ADJUSTMENT Select F2 Time adjustment from the DATE/TIME display screen.

Controls and Operation LANGUAGE ADJUSTMENT

From the preferences menu press the F2 button to access language selection screen.

Use the Arrow Up or Arrow Down to select the HOUR. Press the OK button to confirm selection.

The display shows the MINUTES highlighted.

The languages available for selection will be shown.

Use the up arrow or down arrow buttons to move to the preferred language.

Press OK to confirm the selection.

The display will return to the LANGUAGE menu screen.

Press the back button to return to the preferences menu.

Use the Arrow Up or Arrow Down to select the minute. Press OK button to confirm the selection.

The display returns to the DATE/TIME menu screen. Press the back button main menu screen.

to return to the

2.47

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher MODULES

INFO MENU

Press F1 to select the modules menu. This menu provides information on the following machine modules: • Display

From the main menu page press the F4 button (Info) and the Info menu page appears.

• XA2-A0-Module 1 – Cab • XA2-A1-Module 2 – Rear Chassis • FPT Engine

The following menu items can be selected.

• Modules – Select F1 • Logs – Select F3 The machine ID information is displayed on the screen.

Shown above, the MD3 module has been selected. Specific information for the MD3 is displayed on the screen.

This menu is used by Tigercat service technicians.

Refer to SECTION 6 of the SERVICE MANUAL for more information.

Press the back button (F1) to return to the main menu page.

2.48

Tigercat 720G/724G/726G Feller Buncher LOGS

Press F3 from the info menu page to select logs.

This menu lists System Logs and Hydraulic Logs and the number of records within each log. The records are a list of all the fault occurrences in each log.

Use the Arrow Up or Arrow Down to select the menu item. Press OK to confirm the selection.

Use the up arrow or down arrow buttons to select the menu item. Press OK to view the selection and sort the information in a variety of ways.

The records are a list of all the fault occurrences in each log. Records cannot be cleared by operators.

This menu is used by Tigercat service technicians.

Refer to SECTION 6 of the SERVICE MANUAL for more information.

Press the back button (or F1) to return to the main menu page.

2.49

Controls and Operation

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

MESSAGES The MD3 computer displays messages, activates the master alarm and alarm light whenever a system fault occurs. Note that the computer control system automatically performs a bulb test at engine start up to ensure that master alarm and alarm light are functioning. Refer to STARTING ENGINE in THIS SECTION. There are different types of Messages and Alarms, they appear on the screen as a block message.

The types of messages are: • CRITICAL MESSAGE (RED) • ERROR MESSAGE (RED) • ALERT MESSAGE (YELLOW) • INFORMATION MESSAGE (BLUE) Messages can be hidden or acknowledged by pressing the F2 button (Hide or OK).

All messages that have been hidden or acknowledged are stored in the computer.

In some instances it is necessary to immediately stop the machine, shut the engine OFF and repair the problem causing the message.

Active fault messages that have been hidden can be reviewed by pressing the F4 button. Recalled messages and warnings are displayed in order of highest priority.

2.50

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

CRITICAL MESSAGES (RED) Critical messages advise the operator that a critical machine fault is about to occur or a system fault has occurred.

Critical messages have the highest level of priority and are used to alert operator that immediate action must be taken to prevent damage to machine or to ensure operator safety.

When a critical message is displayed, the master alarm sounds and alarm light flashes continuously. The message remains on the screen until the operator hides it.

Critical messages flash the critical symbol above the F4 button when active messages are hidden. The symbol continues to flash until the problem is resolved and the fault becomes inactive.

Active messages that have been hidden can be reviewed by pressing the F4 button.

CRITICAL MESSAGE LIST: Hydraulic Oil – Level Low Hydraulic Oil – Temperature High Return Oil Filters – Bypassed Fire Detected Hardware Fault – MD3 Hardware Fault – Engine Hardware Fault – XA2 Engine Coolant Temperature High Engine Coolant Level low After Treatment System Technical Failure After Treatment System Engine Idle Too Long Engine Torque Derate Active Engine Locked Out Engine Restarts Remaining Until Engine Lockout Engine Oil Pressure Low Engine Oil Temperature High Engine Fault Code Messages - Critical

The message gives brief details of the fault and advises what action is necessary.

In some instances the machine requires immediate action to correct the problem which requires the operator to STOP machine operation, SHUT THE ENGINE OFF and service the machine to correct the problem.

However, if the machine cannot be stopped immediately for safety reasons, the operator can hide the message. In this instance the machine should only be operated long enough to move the machine to a safe location, then STOP machine operation and SHUT THE ENGINE OFF before serious machine damage can occur!

Messages can be hidden by pressing the F2 button (Hide).

NOTE: Not all messages are shown.

2.51

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

CRITICAL MESSAGES Hydraulic Oil Hydraulic Oil

Temperature High.

Level Low.

HYDRAULIC OIL TEMPERATURE HIGH HYDRAULIC OIL LEVEL LOW This message is displayed, alarm light flashes and alarm sounds when the main hydraulic tank oil level is low.

This message is displayed, alarm light flashes and alarm sounds when the oil temperature exceeds the recommended operating range for the type of hydraulic oil in use.

Stop the engine immediately when this alarm is activated. Operating machine with a low hydraulic oil level can cause hydraulic pumps to fail.

If the temperature rises above the recommended operating range for the type of hydraulic oil in use check the following:

When this alarm is activated stop the engine and look for signs of broken hoses or other leaks.

Repair leaks and refill the main hydraulic tank to FULL mark on the monitor display gauge. Restart engine and inspect for leaks.

• Plugged cooler package air intake screens in doors and access panels • Malfunction in a hydraulic system • High loads on the hydraulic system • Malfunction of the cooling fan • Low hydraulic oil level • Correct Hydraulic Oil Grade Selection If hydraulic oil temperature rises above the recommended operating range DO NOT continue to operate the machine.

This alarm must not be used to monitor the hydraulic oil. The operator must use the hydraulic oil temperature gauge on the main menu, together with the operating range chart in SECTION 3 to prevent damage to the hydraulic system.

Hydraulic oil grade information is shown on the main menu below the hydraulic oil temperature gauge.

Operating outside the recommended operating range shortens hydraulic component life.

Refer to COMPUTER – ADJUSTMENT MENU – SERVICE SETTINGS – HYDRAULIC OIL GRADE in THIS SECTION for hydraulic oil grade selection settings information.

Refer also to APPROVED HYDRAULIC OILS in SECTION 3 of THIS MANUAL for hydraulic oil operating range information.

Refer to COMPUTER – INFORMATION MODE MENU – HYDRAULIC OIL TEMPERATURE in THIS SECTION for hydraulic oil temperature information display.

2.52

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

Return Oil Filters

Fire Detection System

Bypassed. Slowly warm up machine or service if already warm.

Fire Detected. When safe to do so, shutdown engine and exit cab.

HYDRAULIC OIL RETURN FILTERS BYPASSED This message is displayed, alarm light flashes and alarm sounds to inform the operator that the hydraulic oil is bypassing the return filters.

FIRE DETECTED This message is displayed, alarm light flashes and alarm sounds to inform the operator that the fire detection system has detected a fire.

This message may appear if the machine is cold.

If the machine has already been warmed up, then the machine should be service immediately.

Refer to FIRE DETECTION SYSTEM in THIS SECTION for more information.

Refer also to WHAT TO DO IN CASE OF A MACHINE FIRE and WHAT TO DO AFTER A FIRE in SECTION 1 of THIS MANUAL.

NOTE: Hydraulic oil filter bypass icon will also be illuminated in yellow when the hydraulic oil temperature is low and red when hydraulic oil is at operating temperature.

HYDRAULIC FILTER BYPASS (YELLOW)

HYDRAULIC FILTER BYPASS (RED)

2.53

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

Hardware Fault – MD3

Hardware Fault – XA2

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

HARDWARE FAULT – MD3

HARDWARE FAULT – XA2

This message is displayed, alarm light flashes and alarm sounds when a critical active hardware fault related to the MD3 Display module has been hidden.

This message is displayed, alarm light flashes and alarm sounds when a critical active hardware fault related to the XA2 module has been hidden.

To recall the original active fault(s) the operator must turn the key off and on.

To recall the original active fault(s) the operator must turn the key off and on.

A VREF (modules reference voltage) and no contact errors are examples of the type of hardware fault which may be the original active fault which triggers this message.

A VREF (modules reference voltage) error is an example of the type of hardware fault (original active fault) that triggers this message.

Hardware Fault – Engine Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

HARDWARE FAULT – ENGINE This message is displayed, alarm light flashes and alarm sounds when a critical active hardware fault related to the Engine has been hidden.

To recall the original active fault(s) the operator must turn the key off and on.

No contact error is an example of the type of hardware fault (original active fault) that triggers this message.

2.54

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

SPN: 63011 1 of 1

Engine Coolant

Engine coolant temperature high.

Level Low.

ENGINE COOLANT TEMPERATURE HIGH

ENGINE COOLANT LEVEL LOW

This message will be displayed, alarm warning light will flash and alarm will sound when engine temperature exceeds recommended engine temperature.

This message will be displayed, alarm warning light will flash and alarm will sound when the coolant level drops below a safe operating level.

The sensor is located in the surge tank.

When this alarm is activated check for:

If this light comes on when the engine is running, stop the engine immediately and correct the fault.

With engine running, top up radiator using correct solution of coolant antifreeze.

• Plugged cooler package air intake screens in doors and access panels • Plugged radiator.

Refer to SERVICE AND LUBRICATION POINTS CHART in SECTION 3 of THIS MANUAL.

• Malfunction of the cooling fan Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION.

WARNING

DO NOT remove the radiator fill cap when the engine is hot, release of pressurized coolant can cause serious burns.

Turn the engine off. Only remove the radiator fill cap when cool enough to touch with bare hands.

Slowly loosen the cap to the first stop to relieve pressure before removing completely.

2.55

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

After Treatment System

After Treatment System

Technical failure severe. Engine lockout may occur after full torque derate and 3 engine restarts.

Engine idle too long. Shutdown engine to prevent damage to emission control system.

AFTER TREATMENT SYSTEM TECHNICAL FAILURE

AFTER TREATMENT SYSTEM ENGINE IDLE TOO LONG

This message will be displayed, alarm warning light will flash and alarm will sound when an after treatment technical fault is detected. Action to correct the problem should be taken immediately to avoid affecting engine performance and damage to the diesel oxidation catalyst /selective catalytic reduction (DOC/SCR) after treatment system components.

This message will be displayed, alarm warning light will flash and alarm will sound when this engine has idled for more than 9 consecutive hours. Shutdown engine to prevent damage to the emission control system.

This message results in the following derate sequence if no action is taken to correct the problem: •

Beginning immediately after an after treatment system technical message there will be a a ramp down of Torque by 25% over 25 minutes.

•

After one hour at reduced torque there will be a ramp down of Engine Speed by 60% and Torque by 65% over 40 minutes.

•

After 50 minutes at derated engine speed and torque the engine is derated to idle within 30 minutes.

•

Some less severe technical faults can be fixed at any time, even after then engine has been fully derated to idle speed.

•

More severe technical faults will result in an engine lockout when the engine has derated to idle and there have been three restarts (redetects). Once locked out the engine will only operate at idle. Action to correct the original cause(s) of the lockout must be taken before the engine can be reset. Contact dealer to reset engine lockout for normal operation.

Refer to COMPUTER – MESSAGES CRITICAL – ENGINE LOCKED OUT and ENGINE RESTARTS REMAINING UNTIL ENGINE LOCKOUT in THIS SECTION.

Identify the cause of the technical failure and take action to correct the problem.

Refer also to AFTERTREATMENT SYSTEM in SECTION 3 of THIS MANUAL for more information.

2.56

IMPORTANT! Engine should not idle longer than 9 consecutive hours. Damage to the emission control system will result. When this machine idles for an extended period excess hydrocarbon buildup is created in the DOC/SCR aftertreatment system. Burn off of excess hydrocarbon at full load immediately after a long idle period will generate excess heat which will cause damage to emission control system components.

SPN: 62191 1 of 1 Engine torque derate active.

ENGINE TORQUE DERATE ACTIVE This message will be displayed, alarm warning light will flash and alarm will sound when the Engine ECU has derated the engine. The code for a Torque Derate/Diesel Exhaust Fluid Empty is shown above as an example.

Refer to Engine Manuals for code information to identify the cause(s) of engine derating and more information regarding failure cause and repair.

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

Engine

Engine

Engine locked out. Engine derate to 0% Torque and 850 rpm. Contact Dealer

3 restarts remaining until engine lockout.

ENGINE LOCKED OUT

ENGINE RESTARTS REMAINING UNTIL ENGINE LOCKOUT

This message will be displayed, alarm warning light will flash and alarm will sound when an engine is locked out by the computer system to prevent further damage to the engine and aftertreatment system.

This message will be displayed, alarm warning light will flash and alarm will sound to inform the operator of the number of restarts available before the engine is locked out.

NOTE: An engine is locked out after several other critical aftertreatment system messages regarding the cause of the problem and additional messages regarding the number of restarts until engine lockout.

NOTE: An engine is locked out after several other critical aftertreatment system messages regarding the cause of the problem and this message regarding the number of restarts until engine lockout.

Once locked out the engine will only operate at idle. Action to correct the original cause(s) of the lockout must be taken before the engine can be reset. Contact dealer to reset engine lockout for normal operation.

Refer also to COMPUTER – MESSAGES CRITICAL – ENGINE LOCKED OUT in THIS SECTION.

Refer to Engine Manuals for code information.

Refer also to COMPUTER – MESSAGES CRITICAL – ENGINE RESTARTS REMAINING UNTIL ENGINE LOCKOUT in THIS SECTION.

2.57

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

SPN: 9939 1 of 1

SPN: 4645 1 of 1

Engine Oil Pressure Low.

Contact dealer.

ENGINE OIL PRESSURE LOW

ENGINE FAULT CODE MESSAGES - CRITICAL

This message will be displayed, alarm warning light will flash and alarm will sound when engine oil pressure falls below 10psi (0.7 bar).

Critical engine fault message(s) will be displayed, alarm warning light will flash and alarm will sound when a critical engine fault message is received from the engine electronic control module.

Stop the engine when this alarm is activated.

Check engine oil levels.

They provide the SPN code (suspect parameter number) as well as a message describing the fault (when available).

Refer to STARTING ENGINE in THIS SECTION for more information.

Critical engine fault codes are higher priority messages than alert level engine fault code messages. Critical messages can be hidden but immediate action must be taken, STOP machine operation and service engine immediately to resolve the cause of the fault.

An example of a critical engine fault message is shown above.

Note that some less common engine fault codes will appear without a message describing the fault. Make a note of the SPN code and contact service for more information.

SPN: 7123 1 of 1 Engine oil temperature high.

Refer to engine manual for specific information regarding the engine and aftertreatment system.

NOTE: Contact your Tigercat dealer to obtain an Engine Fault Codes chart. An up to date copy should be kept in the Manual’s Box (in the cab). The chart is updated regularly by the engine manufacturer, so it is important to check periodically with the Tigercat dealer to ensure that you have a current copy of the Engine Fault Codes chart.

ENGINE OIL TEMPERATURE HIGH This message will be displayed, alarm warning light will flash and alarm will sound when engine oil temperature exceeds recommended engine temperature.

Check the cooling assembly and fan for proper operation and run a clean cycle if the machine is equipped with a variable pitch fan. It is also important to manually clean debris from the machine on a regular basis to maintain low machine operating temperatures. Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE. Refer to Engine manuals for more information.

2.58

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

ERROR MESSAGES (RED) Error messages advise the operator that a critical machine fault is about to occur or a system fault has occurred.

Error messages are computer system generated and are generally triggered by computer system error and fault related conditions.

Error messages have the second highest level of priority and are used to alert operator that immediate action must be taken to prevent damage to machine or to ensure operator safety.

A list of some types of ERROR MESSAGES is as follows:

Error messages are activated whenever a fault such as an electrical connection is broken/ disconnected. Most error messages are due to computer system hardware or connection faults.

Module No Contact Error Module VREF Error Voltage Input Error (VIN)

When an error message is displayed, the master alarm and alarm light will sound and flash continuously. The message remains on the screen until the operator hides it.

Digital Input Error (DIN) Digital Output Error (DOUT) Current Output Error (COUT)

The message will give brief details of the fault and advise what action is necessary.

* Note that not all error messages are shown.

In some instances the machine requires immediate action to correct the problem which requires the operator to STOP machine operation, SHUT THE ENGINE OFF and service the machine to correct the problem.

However, if the machine cannot be stopped immediately for safety reasons, the operator can hide the message. In this instance the machine should only be operated long enough to move the machine to a safe location then STOP machine operation and SHUT THE ENGINE OFF before serious machine damage can occur!

Messages are acknowledged by pressing the F2 button (OK). To recall active messages turn key off and on. On screen messages will indicate to the operator that an active hardware fault has been hidden.

Error messages flash the critical symbol

or the

above the F4 button when active messages are hidden depending on the type of error message. The symbol will continue to flash until the problem is resolved and the fault becomes inactive.

Active messages that have been hidden can be reviewed by pressing the F4 button.

2.59

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

ERROR MESSAGES

XA2-A0

MODULE NO CONTACT ERROR

XA2-A0- Module 1 - Cab

The module no contact error message will be displayed to indicate a loss of communication with or power to a module. The module is identified on the display screen.

No contact

When a module loses contact all machine functions controlled by that module cease and all messages and warnings associated with that module are triggered. If the problem is with the CAN wires all modules beyond the problem module will also be affected.

XA2-A1

Note that if the MD3 display module has a loss of power or other malfunction the screen may go blank and all machine functions controlled by the computer system will be affected..

XA2-A1- Module 2 - Rear Chassis No contact

Once acknowledged this message will be replaced with a hardware fault message for the corresponding module when active faults are recalled to the screen. Refer to COMPUTER – MESSAGES - CRITICAL – HARDWARE FAULT in THIS SECTION.

J1939-B0

FPT Engine No contact

2.60

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

MODULE VREF ERROR

MD3

The module VREF message will be displayed to indicate a problem related to the 5V reference signal coming from the module.

Display VREF error

The module is identified on the display screen.

This message indicates a problem with a sensor, connecting wires or the 5V reference signal itself.

Once acknowledged this message will be replaced with a hardware fault message for the corresponding module when active faults are recalled to the screen. Refer to COMPUTER – MESSAGES - CRITICAL – HARDWARE FAULT in THIS SECTION.

XA2-A0

XA2-A0- Module 1 - Cab VREF error

XA2-A1

XA2-A1- Module 2 - Rear Chassis VREF error

2.61

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher CURRENT OUTPUT ERROR (COUT)

Module 2- Rear Chassis Pin C1:13

Current output error messages will be displayed to indicate a problem with a current output signal from a computer system module.

Hyd. Oil Temp VIN High error

The module and pin number are identified on the display screen.

The heading identifies the signal destination and the text indicates the type of error.

The display is similar to the voltage input error message shown above.

VOLTAGE INPUT ERROR (VIN)

Once acknowledged these message will be replaced with a hardware failure message for the corresponding module when active faults recalled to the screen. Refer to COMPUTER – MESSAGES - ALERT – HARDWARE FAILURE in THIS SECTION.

Voltage input error messages will be displayed to indicate a problem with a voltage input signal to a computer system module.

The module and pin number are identified on the display screen.

The heading identifies the signal source and the text indicates the type of error.

An example of a voltage input error message is shown above.

DIGITAL INPUT ERROR (DIN) Digital input error messages will be displayed to indicate a problem with a digital input signal to a computer system module.

The module and pin number are identified on the display screen.

The heading identifies the signal source and the text indicates the type of error.

The display is similar to the voltage input error message shown above.

DIGITAL OUTPUT ERROR (DOUT) Digital output error messages will be displayed to indicate a problem with a digital output signal from a computer system module.

The module and pin number are identified on the display screen.

The heading identifies the signal destination and the text indicates the type of error.

The display is similar to the voltage input error message shown above.

2.62

Tigercat 720G/724G/726G Feller Buncher ALERT MESSAGES (YELLOW)

Controls and Operation There are two types of alert messages:

Alert messages advise the operator that machine operation is compromised.

Alert messages have the second level of priority and are used to indicate to the operator that action is required to prevent future damage to the machine.

Alert messages give brief details of the fault and advises what action is necessary.

Action should be taken to service the machine and correct the problem at the earliest opportunity to prevent future damage to the machine.

Alert programmed messages generally triggered by machine function related conditions.

When an alert message is displayed, the external alarm sounds and light flashes 3 times to alert the operator of the message. The message remains displayed until the operator hides it.

Messages are hidden by pressing the F2 button (Hide).

Alert messages flash the alert symbol above the F4 button when active messages are hidden.

Alert computer system generated messages are generally triggered by computer system error and fault related conditions.

Active messages that have been hidden can be reviewed by pressing the F4 button. The symbol continues to flash until the problem is resolved and the fault becomes inactive.

When a system-generated alert message is displayed, the external alarm sounds and light flashes 3 times to alert the operator of the message.

NOTE: If both a critical level fault and an alert level fault are present, the critical symbol takes priority until the critical fault becomes inactive.

The message remains displayed until the operator hides it.

NOTE: Active hardware fault alert messages are acknowledged by pressing the F2 button (OK). To recall these messages turn key off and on. Onscreen messages indicate to the operator that an active hardware fault has been hidden.

2.63

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

INTERACTIVE ALERT MESSAGES Engine Air Intake Filter Restricted Drive Charge Filter Bypassed Fire Detection System Malfunction Machine Voltage High Machine Voltage Low Fuel Level Low Hardware Fault – MD3 Hardware Fault XA2 Hardware Fault COUT Hardware Fault DIN Hardware Fault DOUT Hardware Fault VIN Engine Voltage Low Engine Voltage High Fuel Water In Fuel Engine Coolant Temperature High Diesel Exhaust Fluid Level <10% Diesel Exhaust Fluid Level <5% Diesel Exhaust Fluid Level Empty Diesel Exhaust Fluid Quality Engine Fault Code Messages - Alert Some types of computer system generated alert messages are listed below: Module High Temperature - Alert Module High Supply Voltage - Alert Module Low Supply Voltage - Alert * Note that not all system generated alert messages are shown.

2.64

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

Engine Air Intake Filter

Fire Detection System

Restricted. Service Machine to correct.

Malfunction. System will not detect fire. Repair system immediately..

ENGINE AIR INTAKE FILTER RESTRICTED

FIRE DETECTION SYSTEM MALFUNCTION

This message will be displayed when a signal is received from the restriction indicator switch on the engine air cleaner.

This message is displayed when an alert level malfunction is detected in the fire detection system Refer to FIRE DETECTION SYSTEM in THIS SECTION for more information.

When this happens the engine air cleaner requires immediate service.

Refer also to WHAT TO DO IN CASE OF A MACHINE FIRE and WHAT TO DO AFTER A FIRE in SECTION 1 of THIS MANUAL.

Refer to AIR CLEANER MAINTENANCE in SECTION 3 of THIS MANUAL.

Drive Charge Filter

Machine Voltage

Bypassed. Service machine to correct.

High. Service machine to correct.

DRIVE CHARGE FILTER BYPASS

MACHINE VOLTAGE HIGH

This message is displayed when an alert level active fault related to the DRIVE CHARGE FILTER BYPASS has been triggered.

This message will be displayed when machine voltage readings of greater than 30 volts are detected.

Service machine alert message is an example of the type of fault that triggers this message. The charge pressure filter is restricted and requires service, or the oil temperature is cold allowing the oil to bypass the filter.

Machine voltage readings indicate voltage levels in the electrical system.

When this alarm is activated investigate the cause immediately.

2.65

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

Machine Voltage

Hardware Fault – MD3

Low. Service machine to correct.

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

HARDWARE FAULT – MD3

MACHINE VOLTAGE LOW

This message is displayed when an alert level active hardware fault related to the MD3 Display module has been hidden.

This message will be displayed when machine voltage readings of less than 20 volts are detected.

To recall the original active fault, the operator must turn the key off then back on.

Machine voltage readings indicate voltage levels in the electrical system.

High temperature, low and high supply voltage module alert messages are examples of the type of hardware fault that are the original active faults to trigger this message.

When this alarm is activated investigate the cause immediately.

Fuel

Hardware Fault – XA2

Level low.

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

FUEL LEVEL LOW

HARDWARE FAULT – XA2

This message will be displayed when the fuel level falls below 18% of full.

This message is displayed when an alert level active hardware fault related to the XA2-A0 module has been hidden.

Note that the fuel gauge symbol changes from its normal white to yellow when fuel level is low.

To recall the original active fault(s) the operator must turn the key off and on.

Refer to FUEL TANK in THIS SECTION for tank capacities.

High temperature, low and high supply voltage module alert messages are examples of the type of hardware fault that are the original active faults to trigger this message.

2.66

Tigercat 720G/724G/726G Feller Buncher

Hardware Failure - VIN

Controls and Operation

Hardware Failure - DOUT

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

HARDWARE FAILURE - VIN

HARDWARE FAILURE - DOUT

This message will be displayed when a voltage input error message has been hidden.

This message will be displayed when a digital output error message has been hidden.

To recall the original active fault(s) the operator must turn the key off and on.

To recall the original active fault(s) the operator must turn the key off and on.

Hardware Failure - DIN

Hardware Failure - COUT

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

Active fault has been hidden. Turn key off and on to recall active hidden hardware faults.

HARDWARE FAILURE - DIN

HARDWARE FAILURE - COUT

This message will be displayed when a digital input error message has been hidden.

This message will be displayed when a current output error message has been hidden.

To recall the original active fault(s) the operator must turn the key off and on.

To recall the original active fault(s) the operator must turn the key off and on.

2.67

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

SPN: 62755 1 of 1

SPN: 8801 1 of 1

Engine coolant temperature high.

Engine voltage low.

ENGINE VOLTAGE LOW

ENGINE COOLANT TEMPERATURE HIGH

This message will be displayed when engine voltage readings of less than 20 volts are detected.

This message will be displayed, alarm warning light will flash and alarm will sound when engine temperature exceeds recommended engine temperature.

When this alarm is activated investigate the cause immediately.

Investigate cause as soon as possible.

When this alarm is activated check for: • Plugged cooler package air intake screens in doors and access panels • Plugged radiator.

Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION. Refer to COMPUTER – MESSAGES - CRITICAL – ENGINE COOLANT TEMPERATURE HIGH.

SPN: 4449 1 of 1

SPN: 17429 1 of 1

Engine voltage high.

Water in Fuel.

ENGINE VOLTAGE HIGH

FUEL - WATER IN FUEL

This message will be displayed when engine voltage readings of greater than 30 volts are detected.

This message will be displayed when water is detected in the fuel by the engine computer system.

When this alarm is activated investigate the cause immediately.

Refer to engine manufacturer's manual for specific information regarding the engine.

2.68

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

DIESEL EXHAUST FLUID LEVEL WARNINGS There are three levels of diesel exhaust fluid level warnings generated by the Engine ECU.

SPN: 64191 1 of 1 DEF tank empty.

SPN: 61839 1 of 1 DEF Level below 10%.

DIESEL EXHAUST FLUID LEVEL EMPTY This message will be displayed, alarm warning light will flash and alarm will sound when diesel exhaust fluid level empty is detected. Action to correct DEF levels should be taken immediately to avoid affecting engine performance and damage to the diesel oxidation catalyst /selective catalytic reduction (DOC/SCR) aftertreatment system components.

DIESEL EXHAUST FLUID LEVEL <10% This message will be displayed, alarm warning light will flash and alarm will sound when a diesel exhaust fluid level below 10% is detected. Action to correct DEF levels should be taken immediately to avoid affecting engine performance and damage to the diesel oxidation catalyst /selective catalytic reduction (DOC/SCR) aftertreatment system components.

• Beginning immediately after a DEF level empty message, the engine is derated to idle within 30 minutes.

Fill DEF tank and restart engine to clear the message.

Fill DEF tank and restart engine to clear the message.

NOTE: An Engine Torque Derate Active message will also be triggered as the engine begins to derate. Refer to COMPUTER – MESSAGES - CRITICAL – ENGINE TORQUE DERATE ACTIVE.

Refer to DIESEL EXHAUST FLUID (DEF) TANK in THIS SECTION.

SPN: 62095 1 of 1 DEF Level below 5%.

DIESEL EXHAUST FLUID LEVEL <5% This message will be displayed, alarm warning light will flash and alarm will sound when a diesel exhaust fluid level below 5% is detected. Action to correct DEF levels should be taken immediately to avoid affecting engine performance and damage to the diesel oxidation catalyst /selective catalytic reduction (DOC/SCR) aftertreatment system components.

• Beginning immediately after a DEF level <5% message, there will be a ramp down of Engine Speed by 60% and Torque by 65% over 40 minutes.

Fill DEF tank and restart engine to clear the message.

2.69

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher NOTE: An Engine Torque Derate Active message will also be triggered as the engine begins to derate. Refer to COMPUTER – MESSAGES - CRITICAL – ENGINE TORQUE DERATE ACTIVE.

SPN: 19402 1 of 2 DEF quality low.

Refer to DIESEL EXHAUST FLUID TANK in SECTION 2 of THIS MANUAL and DRAINING DEISEL EXHAUST FLUID TANK in SECTION 3 of THIS MANUAL. Refer also to AFTERTREATMENT SYSTEM in SECTION 3 of THIS MANUAL for more information regarding the use of DEF and its function in the DOC/SCR aftertreatment system.

SPN: 19658 2 of 2 DEF quality low.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) aftertreatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

DIESEL EXHAUST FLUID QUALITY This message will be displayed, alarm warning light will flash and alarm will sound when a diesel fluid quality problem is detected. Action to correct the problem should be taken immediately to avoid affecting engine performance and damage to aftertreatment system components.

This message results in the following derate and engine lockout sequence if no action is taken to correct the problem: • Beginning one hour after a DEF quality message there will be a ramp down of Engine Speed by 60% and Torque by 65% over 40 minutes.

• After two hours at derated engine speed and torque the engine is derated to idle within 30 minutes.

To correct the DEF quality problem clean the area around the DEF tank then drain and refill the tank with clean DEF which meets ISO 22241 specifications.

2.70

Tigercat 720G/724G/726G Feller Buncher

SPN: ###### 1 of 1 Contact dealer.

ENGINE FAULT CODE MESSAGES - ALERT Alert engine fault message(s) will be displayed, alarm warning light will flash and alarm will sound when an alert engine fault message is received from the engine electronic control module.

They provide the SPN code (suspect parameter number) as well as a message describing the fault (when available).

Alert engine fault codes are lower priority messages than critical level engine fault code messages. Alert messages can be hidden but action (service engine) is required to resolve the cause of the fault.

An example of an alert engine fault message is shown above.

NOTE: Some less common engine fault codes will appear without a message describing the fault.

Make a note of the SPN code and contact service for more information.

Refer to engine manual for specific information regarding the engine and aftertreatment system.

NOTE: Contact your Tigercat dealer to obtain an Engine Fault Codes chart. An up to date copy should be kept in the Manual’s Box (in the cab). The chart is updated regularly by the engine manufacturer, so it is important to check periodically with the Tigercat dealer to ensure that you have a current copy of the Engine Fault Codes chart.

2.71

Controls and Operation

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

MODULE HIGH TEMPERATURE - ALERT

MD3

Module high temperature alert message will be displayed to indicate that the computer control system has detected high temperature readings in a system module.

Display High temperature

The module is identified on the display screen.

The temperature reading value is also displayed.

Value: 75° C

Once acknowledged this message will be replaced with a hardware fault message for the corresponding module when active faults are recalled to the screen. Refer to COMPUTER – MESSAGES - ALERT – HARDWARE FAULT in THIS SECTION.

XA2-A0

XA2-A0- Module 1 - Cab High temperature Value: 75° C

XA2-A1

XA2-A1- Module 2 - Rear Chassis High temperature

Value: 75° C

2.72

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

MODULE HIGH SUPPLY VOLTAGE - ALERT

MD3

Module high supply voltage alert message will be displayed to indicate that the computer control system has detected high supply voltage readings in a system module.

Display High supply voltage

The module is identified on the display screen.

The voltage reading value is also displayed.

Value: 34 V

Once acknowledged this message will be replaced with a hardware fault message for the corresponding module when active faults are recalled to the screen. Refer to COMPUTER – MESSAGES - ALERT – HARDWARE FAULT in THIS SECTION.

XA2-A0

XA2-A0- Module 1 - Cab High supply voltage

Value: 75° C

XA2-A1

XA2-A1- Module 2 - Rear Chassis High supply voltage

Value: 34 V

2.73

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

MODULE LOW SUPPLY VOLTAGE - ALERT

MD3

Module low supply voltage alert message will be displayed to indicate that the computer control system has detected low supply voltage readings in a system module.

Display Low supply voltage

The module is identified on the display screen.

Once acknowledged this message will be replaced with a hardware fault message for the corresponding module when active faults are recalled to the screen. Refer to COMPUTER – MESSAGES - ALERT – HARDWARE FAULT in THIS SECTION.

XA2-A0

XA2-A0- Module 1 - Cab Low supply voltage

XA2-A1

XA2-A1- Module 2 - Rear Chassis Low supply voltage

2.74

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

SERVICE COMPARTMENTS, DOORS, & ACCESS PANELS

CAUTION Always install the Door Safety Stop when accessing the rear service compartment. If not used, the door could close unexpectedly causing personal injury or component damage.

REAR DOOR

DOOR SAFETY STOP IN LOCK OPEN POSITION

724G-003

Lift the door safety stop out of its storage position and place the safety stop bolt in hole provided in the door ledge to brace the door open. Reverse this procedure to close doors.

RIGHT SIDE COMPARTMENTS, DOORS, AND ACCESS PANELS

724G-003

The rear door provides access to:

6

5

4

2

• Engine air filter • Hydraulic pumps • Pump drive gearbox oil level dipstick • DEF tank • DEF control module • Hydraulic oil return filters • Hydraulic oil sight gauge • Hydraulic oil fill pump.

724G-002

3

1

The following compartments, doors and access panels are located on the right-hand side of the machine: 1. Cab door, RH 2. Cooling fan and motor access, hinged door.

3. Transmission dipstick, cooling fan and motor access, removable panel.

4. Engine compartment access, hinged door.

5. Engine compartment access – engine oil filter, fuel filter/water separator, starter motor access, alternator access, removable panel.

724G-001 M726E-104

6. Diesel fuel fill, hinged cover.

To open the door, swing the latch pin stop to the side, lift up the pin and swing open the door.

2.75

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation OPENING THE RIGHT HAND DOORS 6

5

4

LEFT SIDE COMPARTMENTS, DOORS AND ACCESS PANELS

2

8

10

11

12

13

724G-002

3

14

1 724G-004

The right hand cab door (1) is an emergency exit but also gives access to the AC/heater unit and inside the control panel.

7

9

The following compartments, doors and access panels are located on the left-hand side of the machine:

The cooling fan and motor upper door (2) is hinged. To open the door, swing the latch pin stop to the side, lift up the pin and swing open the door.

7. Cab door, LH 8. Cooling package access, hinged door.

9. Cooling package access, removable panel.

The cooling fan and motor lower panel (3) is removable and held in place by the upper hinged door. Fully open the upper hinged door to allow the lower panel to be removed.

10. Engine compartment access, hinged door.

11. Engine compartment access – engine ECU access, engine fuel filter access, A/C compressor access, removable panel.

The engine compartment upper door (4) is hinged.

To open the door, swing the latch pin stop to the side, lift up the pin and swing open the door.

12. Air intake precleaner access.

13. Battery disconnect switch access, hinged door.

The engine compartment lower panel (5) is removable and held in place by the upper hinged door. Fully open the upper hinged door to allow the lower panel to be removed.

14. Battery compartment, fuses and relay access, bolt on panel.

2.76

Tigercat 720G/724G/726G Feller Buncher OPENING THE LEFT HAND DOORS 8

10

11

12

13 14 724G-004

7

9

The left hand cab door (7) is the main access to the cab.

The cooling package upper door (8) is hinged. To open the door, swing the latch pin stop to the side, lift up the pin and swing open the door.

The cooling package lower panel (9) is removable and held in place by the upper hinged door. Fully open the upper hinged door to allow the lower panel to be removed.

The engine compartment upper door (10) is hinged. To open the door, swing the latch pin stop to the side, lift up the pin and swing open the door.

The engine compartment lower panel (11) is removable and held in place by the upper hinged door. Fully open the upper hinged door to allow the lower panel to be removed and access the engine ECU, A/C compressor, and engine fuel filter.

To access the air intake precleaner, pull on the latch handle and swing the door (12) open.

To access the battery disconnect switch, pull on the latch handle and swing the door (13) open.

To access the battery compartment fuses and relays, remove the 8 panel mounting bolts.

2.77

Controls and Operation

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher REFUELING

FUEL TANK

Park machine on level ground, turn engine off and allow machine to cool.

FUEL LEVEL SENDER

FUEL FILL CAP

DO NOT refuel while smoking or near an open flame or sparks.

FUEL TANK

Clear obstructions from steps and handles needed to access the fuel tank.

Attach a grounding strap to an unpainted metal surface on the machine if the refueling tank or nozzle is so equipped.

724E-110 724E-097

Located at the right rear of the machine, the fuel tank on models 720G/724G has a usable capacity of 303 L (80 US gal) while the 726G model has a capacity of 340.6 L (90 US gal). The fuel fill cap and fuel level sender are located under a hinged cover on the top of the tank. The fuel level sender sends a signal to the computer system which displays an on-screen fuel level gauge.

FUEL NOZZLE HOLDING BRACKET 726G-003

718E-037

Before climbing onto the machine to refuel, secure the fuel nozzle in the nozzle holding bracket.

DIPSTICK

Once safely on the machine open the cover on top of the fuel tank (if equipped) and clear any debris from around the fuel fill cap.

S≤15 mg/kg

Remove the fuel fill cap slowly to allow pressure to escape from the tank.

ULTRA LOW SULFUR FUEL ONLY 36686AUNI R0

Inspect the fuel fill cap gasket.

Inspect the fuel strainer located under the fuel fill cap for debris or damage.

FUEL STRAINER

Fill the tank until the fuel level reaches the bottom of the fuel strainer. Do not leave the fuel nozzle unattended or spillage may occur.

When refueling is complete place the fuel nozzle back in the holding bracket.

FUEL TANK DIPSTICK/FUEL STRAINER

Install the fuel fill cap hand tight before closing the fuel fill cap cover.

A dipstick and a fuel strainer are located under the fuel fill cap. The dipstick slides through a hole in the side of the fuel strainer. DO NOT drop the dipstick into the filler tube or it could punch a hole in the bottom of the fuel strainer. The fuel strainer should be removed and cleaned every 125 hours (reach in and lift it out). Replace the fuel strainer if it is damaged.

Climb off the machine.

Remove the fuel nozzle and grounding strap (if applicable).

Before restarting the machine, check that no other personnel have moved into the hazardous area and sound the horn.

2.78

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

DIESEL EXHAUST FLUID (DEF) TANK The DEF tank is located in the service compartment in the rear of the machine. The DEF fill cap can be accessed through the hinged rear door. The DEF tank fill point is equipped with a filter to prevent contaminants from entering the tank.

41581AUNI R0

DEF tank capacity is 43 L (11.4 US gal). DO NOT overfill the tank. This tank is equipped with an expansion capacity of 7% required to allow for the expansion of DEF in cold temperature conditions.

DEF freezes at -11°C (12°F).

DEF FILL CAP (BLUE)

is shown on A DEF level indicator the main menu of the computer display, below the fuel gauge.

When DEF levels are low, information messages and warnings are shown on the computer display.

Note that extremely low DEF levels may result in derating of engine performance to meet exhaust emission requirements. Action to correct DEF levels should be taken immediately to avoid affecting engine performance. Refer also to COMPUTER – MESSAGES in THIS SECTION. The DEF tank and DEF supply lines are heated when temperatures are low, the system will thaw DEF within 30 minutes of engine start for proper operation of the diesel oxidation catalyst /selective catalytic reduction (DOC/SCR) aftertreatment system. Note also that whenever the engine is stopped all DEF is pumped back to tank before the engine power system is turned off. This process takes approximately 90 seconds. Refer to AFTERTREATMENT SYSTEM in SECTION 3 of THIS MANUAL. Diesel exhaust fluid (DEF) is an aqueous urea solution with 32.5% high purity urea and 67.5% deionized water. Note that DEF may also be referred to as AUS32 or AdBlue® and should meet ISO 22241 specifications. Use only DEF that meets this standard.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) aftertreatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

DEF TANK

724G-007

REAR SERVICE COMPARTMENT

DEF is used by the DOC/SCR aftertreatment system to lower the concentration of nitrogen oxides from the diesel engine exhaust of this vehicle.

It is important to avoid contamination of DEF when filling the tank as this may cause costly damage to aftertreatment system components and affect the proper operation of aftertreatment system and the engine.

When a problem with DEF quality is detected information messages and warnings will be shown on the computer display. Note that DEF quality problems may result in derating of engine performance to meet emission standard requirements. Action to correct DEF quality problems should be taken immediately to avoid affecting engine performance and damage to DOC/SCR aftertreatment system components.

Refer also to COMPUTER – MESSAGES in THIS SECTION. IMPORTANT! DEF should be stored between -11°C (12°F) and 30°C (86°F) and out of direct sunlight to maximize shelf life and to avoid DEF quality problems caused by improper storage.

Refer also to AFTERTREATMENT SYSTEM in SECTION 3 of THIS MANUAL for more information regarding the use of DEF and its function in the DOC/SCR aftertreatment system.

2.79

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation HYDRAULIC OIL TANK

BREATHER

HYDRAULIC OIL RESERVOIR

SIGHT GAUGE, HYDRAULIC OIL LEVEL

SENDING UNIT, HYDRAULIC OIL TEMPERATURE

724G-003

HYDRAULIC OIL TANK

Located at the left-hand rear of the machine, the hydraulic tank on models 720G/724G has a capacity of 160 L (42 US gal) and model 726G has a capacity of 166.5L (44 US gal).

A sight gauge, accessible through the rear door indicates the HIGH and LOW levels of the hydraulic oil. A low level sending unit is installed in the tank that signals a low hydraulic oil light in the cab to come ON when the oil level is low. Always keep the hydraulic oil between the HIGH and LOW calibrations. Check oil level with cylinders fully retracted to obtain an accurate level reading.

A low hydraulic oil level can result in severe damage to pumps.

Over filling causes the excess oil to discharge from the breather vent.

2.80

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

HYDRAULIC OIL HAND FILL PUMP

HAND PUMP QUICK CONNECTION

OIL LEVEL SIGHT GLASS

HAND FILL PUMP

HAND PUMP SUCTION TUBE

724G-003

HYDRAULIC OIL HAND FILL PUMP

The hydraulic oil Hand Fill Pump is used for adding oil to the hydraulic oil reservoir. The hand pump is located on the inside of the rear service compartment door. The oil is pumped directly into the reservoir through the return filters.

• To add oil to the reservoir, lift the fill hose from storage holder and remove dust cap. Connect it to the quick connection on the hand pump.

• Remove the suction tube from its storage position and remove cap.

• Clean the tube, then insert it into the supply drum. Operate the pump to fill reservoir.

• The pump should always be operated at a medium speed with steady motion. Pump oil until FULL level is observed on the reservoir sight glass. Check oil level with cylinders fully retracted to obtain an accurate level reading.

• Remove suction tube from supply drum, wipe it clean, install dust cap and place in stored position.

• Disconnect supply hose, install dust cap on quick connection, and place hose end back in holder.

• Wipe off any oil to prevent dust accumulation.

2.81

FILL HOSE QUICK CONNECTION

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher AIR FILTER RESTRICTION INDICATOR

AIR CLEANER

MECHANICAL AIR FILTER RESTRICTION INDICATOR

ELECTRICAL RESTRICTION INDICATOR SWITCH 724E-098

724G-003

A filter restriction switch is installed on the outlet side of the air cleaner, the switch is used to signal the MD3 computer when the filter is restricted.

SAFETY ELEMENT

Engine Air Intake Filter Restricted. Service Machine to correct.

PRIMARY ELEMENT 724E-116

AIR FILTER ELEMENTS

The air cleaner on this machine uses two filter elements; a primary element and a safety element.

It is accessible through the service compartment access door on the rear of the machine.

To ensure maximum engine protection, it is important that the elements be serviced correctly and at proper servicing intervals.

An alert message appears on the MD3 display to indicate the engine air intake filter is restricted.

Replace the primary air filter element if the alert message is displayed. Replace the secondary (safety) filter every third primary filter change to guarantee maximum performance and reliability.

A mechanical filter restriction indicator is also connected to the outlet side of the air filter.

Replace the primary air filter when the indicator shows RED. This indicator provides a continuous reading whether the engine is running or is shut down. After replacing the filter, reset the indicator by pressing the reset button.

NOTE: Replace the safety element every third primary filter change.

Refer to AIR CLEANER MAINTENANCE, OVER SERVICING and IMPROPER SERVICING in SECTION 3 of THIS MANUAL.

2.82

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation AIR CLEANER UNLOADER VALVE

ENGINE AIR PRECLEANER

ENGINE AIR PRECLEANER ENGINE AIR PRECLEANER

UNLOADER VALVE

724G-003

724E-074

This rubber valve on the tube of the air cleaner housing should be checked before every shift (8 hours). If this valve is missing, damaged or has turned hard, the air cleaner becomes ineffective.

The valve should suck closed at 1/3 throttle.

The engine air precleaner cleans engine air before it reaches the air cleaner filter elements.

It removes contaminants such as dust, powder, insects, rain and snow. This precleaner is self powered and self cleaning requiring virtually no maintenance. However, it should be checked periodically to make sure that foreign materials have not plugged the intake area or the exhaust port area.

This valve should be replaced every 1000 hours.

Remove the unloader valve from the tube of the air cleaner housing. Check and clean the valve. A good valve is soft and flexible. If plugged, be sure to check the filter elements as they may need replacing as well. Reattach the valve to the tube.

NOTE: The precleaner compartment should be checked and cleaned out daily to ensure proper operation of the precleaner.

AS THE AIR SPINS, CENTRIFUGAL FORCE SEPARATES FOREIGN MATERIALS FROM THE CLEAN AIR

When operating in high dust conditions, the unloader valve should be checked and squeezed every 2 hours to release dust buildup.

CONTAMINANTS ARE BLOWN OUT OF SPECIAL DISCHARGE PORTS BY HIGH VELOCITY, AIR POWERED ROTOR

In addition, refer to the LUBRICATION AND MAINTENANCE SCHEDULE – AIR CLEANER MAINTENANCE in SECTION 3 of THIS MANUAL.

CHECK SPINNER BLADES FOR WEAR. REPLACE IF WORN.

THE TURBO II PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER TURBO 2

TURBO II PRECLEANER OPERATION

NOTE: Periodically remove the precleaner assembly and check the spinner assembly for wear or dirt build-up on the blades. Clean the spinner assembly or replace it if the blades are worn.

2.83

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation CLEANING A/C CONDENSER, OIL COOLER, RADIATOR, AND CHARGE AIR COOLER (COOLER PACKAGE)

724E-076

724G-004

1

2

RIGHT-HAND SIDE – CROSS-FLOW FAN The cross-flow fan is mounted on the right side of the machine. The cross-flow fan draws air from the left side of the machine through the door and cooler package blowing it out of the right side of the machine.

LEFT-HAND SIDE – COOLER PACKAGE DOOR AND ACCESS PANEL 1. Hinged door 2. Access panel The cooler package is located on the left side of the machine and consists of the charge air cooler, radiator, A/C condenser, and hydraulic oil cooler.

The cooler package should be manually checked every 8 hours (every shift) or more often where conditions cause accumulation of twigs, leaves, pine needles and dust. All of the engine enclosure doors should also be checked.

RADIATOR A/C CONDENSER CORE

PROCEDURE: 1. Shut down as per instructions in ENGINE STOPPING in THIS SECTION.

CHARGE AIR COOLER

Always follow proper engine shutdown procedures. The important benefits are:

HYDRAULIC OIL COOLER

-- Extended life of engine, cooling and exhaust systems.

-- Reduced risk of post shutdown fires.

-- Interior of machine cools significantly reducing risks from touching hot surfaces.

724E-075

2. Open both cooler package access doors on the sides of the machine by swinging the latch pin stop to the side, lifting up the pin and swing.

COOLER PACKAGE

3. Lift out the bottom screen panels on the right and left sides of the front engine area, behind the cab.

2.84

Tigercat 720G/724G/726G Feller Buncher Compressed air or water may be used for cleaning.

Controls and Operation USING THE FAN SWITCH IN THE EVENT OF AN ENGINE COOLING AND/OR HYDRAULIC OIL TEMPERATURE ALARM.

CAUTION • If using compressed air for cleaning, use at 2.1 bar (30 psi) or less.

• Always use personal protective equipment to guard against flying debris.

FAN SWITCH

If an oil leak occurs in this area it should be thoroughly power-washed with a mild soap to ensure that all of the oil is removed. The presence of oil causes dust and dirt to cling to surfaces which impairs the ability of the reversible fan to remove dust and dirt particles.

M726E-044

CONTROL PANEL

In the event of an engine cooling temperature and/or hydraulic oil temperature alarm:

Care must be taken when cleaning this assembly, as the components can be damaged by careless handling and cleaning.

1. Stop working the machine, keep engine at high idle.

USING THE FAN CLEAN FUNCTION TO REMOVE DEBRIS DURING OPERATION The hydraulic fan circuit has a CLEAN function for use in cleaning debris from the charge air cooler, radiator, oil cooler, A/C condenser and air intake door screens during operation. By reversing the direction of the fan, air flows in the opposite direction, thereby forcing dust and debris off the charge air cooler, radiator, oil cooler, A/C condenser, and air intake door screens. Be sure no personnel are standing directly to the left of the machine when performing this operation. Dust and debris will fly out. Refer to FAN-SWITCH in THIS SECTION for more information.

FULL ON AUTO CLEAN 724G-011

2. Press the top of the fan control switch to the FULL ON position until cooling is achieved.

3. If necessary press and release the bottom of the switch to use the CLEAN function to reverse fan flow and clean debris from the cooler package and air intake door screens.

4. In severe operating conditions manual cleaning of debris may be required.

5. If the problem persists check engine coolant and/or hydraulic oil levels. Refer to OPERATING MACHINE – PRE-START CHECKS in THIS SECTION. 6. Place the switch in the AUTO mode and check for proper operation of the fan. In the event of a problem with the automatic control system the fan control switch should be placed in the FULL ON position while the machine is operating until the fan control can be properly repaired.

NOTE: AUTO REVERSE is disabled when fan is set to FULL ON.

2.85

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation OPERATING MACHINE

HYDRAULIC OIL RESERVOIR

Before operating the machine, follow the Periodic Maintenance instructions in Section 3 of this manual. Also, refer to the engine manual supplied with this machine.

PRE-START CHECKS:

SIGHT GAUGE, HYDRAULIC OIL LEVEL

1. Unlock cab doors, engine enclosure doors and rear service compartment doors.

2. Ensure ignition switch and cutter switch are in the OFF position.

SENDING UNIT, HYDRAULIC OIL TEMPERATURE

PARKING BRAKE SWITCH 724E-115

HYDRAULIC OIL RESERVOIR

5. Visually check hydraulic oil level sight gauge.

The level should be between the HIGH and LOW marks on the level gauge.

M726E-044

CONTROL PANEL

DIPSTICK

3. Check parking brake for proper operation and set parking brake ON (engaged).

4. Turn ignition switch on to check fuel and DEF levels on MD3 display. Fill with the appropriate fluids if required.

Fuel

724G-010

6. Check the engine oil level. The level of the oil must be between the ADD and FULL marks on the dipstick.

DEF

DIPSTICK

724G-048

724E-078

PUMP DRIVE GEARBOX DIPSTICK

7. Check pump drive gearbox oil level. Dipstick is located near the right rear of engine.

2.86

Tigercat 720G/724G/726G Feller Buncher

724E-105

COOLANT LEVEL SIGHT GLASS

Controls and Operation

724E-080

8. Check the engine coolant level. Coolant level must be visible in the sight glass. Additionally, a low level sensor warns the operator if the coolant level falls below an acceptable level.

Add coolant by removing the radiator fill cap.

DRAIN PLUG

9. Drain water from fuel filter/water separator.

DIPSTICK

726E-069

720G/724G SHOWN

10. Check transmission oil level (dipstick).

M726E-130

ENGINE AIR PRECLEANER

ADDING ENGINE COOLANT

WARNING

Turn the engine off. Only remove radiator fill cap when cool enough to touch with bare hands.

Slowly loosen the cap to the first stop to relieve pressure before removing completely.

724E-074

11. Check air intake precleaner for foreign material build-up in air intake area or exhaust port area.

2.87

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

RADIATOR

15. Be sure that all covers, guards and doors are securely fastened.

CHARGE AIR COOLER

16. Check all of the fasteners retaining the disc saw teeth and tighten them to the proper torque level.

A/C CONDENSER CORE

HYDRAULIC OIL COOLER

17. Replace all worn disc saw teeth or rotate worn teeth to align fresh cutting tips.

18. Replace the tooth fastener whenever replacing a saw tooth.

19. Inspect the cutting disc for stress cracks.

20. Check that the cutting disc does not wobble due to worn saw shaft bearings.

724E-075

21. Never start or use a machine if the disc saw has missing teeth, missing teeth fasteners or a bent disc.

COOLER PACKAGE

22. Shut down the machine immediately if you feel a vibration when the cutting disc is running.

12. Clean cooler package. Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in THIS SECTION.

23. Check that the saw housing is clear of debris and obstructions and undamaged.

UNLOADER VALVE 724G-003

13. Check air cleaner unloader valve.

AIR CHARGE VALVE

PRESSURE GAUGE

196-9A

PRESSURIZED WATER SYSTEM

14. Check pressurized water tank pressure gauge, located on the left side of the seat base.

2.88

Tigercat 720G/724G/726G Feller Buncher

STARTING ENGINE: 1. Ensure that PRE START CHECKS have been performed and that the area is clear of personnel prior to starting the engine. Refer to OPERATING MACHINE - PRE-START CHECKS in THIS SECTION. 2. Sound horn to warn personnel of machine start-up.

Controls and Operation NOTE: If the engine does not start after three attempts, check the fuel supply system. Absence of blue or white exhaust smoke during cranking indicates no fuel is being delivered.

IMPORTANT! After engine has started, keep engine speed low until engine oil pressure registers on the computer display. If it does not register within 10 seconds, stop engine and investigate cause.

3. ENGAGE parking brake.

NOTE: The engine can not turn over unless the parking brake is ENGAGED. 4. Turn ignition key switch to the RUN position. The WAIT TO START icon below will appear on the display during the key ON engine pre-heat time. Heating elements (grid heater elements) located in the engine air intake manifold are turned ON to heat the intake air when starting the engine. The engine must not be started until this icon turns OFF automatically.

Allow a cold engine to warm up at LOW IDLE for at least 5 minutes before applying any load. Check all engine parameters on the MD3 display often during the warm-up period.

WARNING DO NOT USE ETHER! Using ether to start the engine may cause an explosion and severe injury. Engine is equipped with an electric heater starting aid for cold weather starts.

5. Turn the key switch to the START position to crank engine. When the engine starts, release the key to RUN position.

CAUTION Do not start engine by shorting across starter terminals. Start engine only from operator's seat.

NOTE: If the engine does not start after three attempts, check the fuel supply system.

6. Set throttle to LOW IDLE speed and wait three to five minutes before operating with a load.

7. Increase engine speed (rpm) slowly to provide adequate lubrication to the bearings and allow oil pressure to stabilize.

If engine stalls while operating the machine, turn the ignition key switch to the OFF position and repeat steps 4 and 5.

IMPORTANT! Engine should not idle longer than 9 consecutive hours. Damage to the emission control system will result. When this machine idles for an extended period excess hydrocarbon buildup is created in the DOC/SCR aftertreatment system. Burn off of excess hydrocarbon at full load immediately after a long idle period will generate excess heat which will cause damage to emission control system components.

2.89

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation RESTARTING AN ENGINE THAT HAS RUN OUT OF FUEL If the engine runs out of fuel, perform the following: 1. Refill fuel tank completely.

2. Turn the key switch to the RUN position to turn on the fuel shut off solenoid.

3. Loosen the vent plug on the fuel filter/water separator head.

4. Use primer pump to refill filter until fuel free of air flows from vent on top of filter head, then tighten vent plug.

5. Turn key switch off and repeat. As well, bleed the system according to engine manual procedures.

6. Crank engine until it starts. If it fails to start after 20 seconds, stop and wait for 2 minutes before trying again.

NOTE: Do not use ether to restart an engine that has run out of fuel.

IMPORTANT! To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.

Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturer operator's manual.

HAND PRIMER

VENT PLUG

726E-004

FUEL FILTER / WATER SEPARATOR

2.90

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

COLD WEATHER STARTING

NOTICE

IMPORTANT! Cold start-ups can result in pump failure, refer to HYDRAULIC OIL CHART for recommended oil viscosity and temperature ranges.

Cold temperatures may require the use of an engine block heater, engine oil pan heater, hydraulic oil heater and fuel heater.

The engine is equipped with an air intake heater with a grid element to aid starting.

Preheating of hydraulic oil is recommended as standard procedure in cold weather.

WARNING

'2 127 ,'/( 7+,6 (1*,1( )25 025( 7+$1 +2856 '$0$*( 72 (0,66,21 &21752/ 6<67(0 :,// 5(68/7

• EXPLOSION HAZARD. • DO NOT USE ETHER. • ENGINE EQUIPPED WITH HEATER STARTING AID.

63281BENG R0

• USE OF ETHER COULD RESULT IN DEATH OR SERIOUS INJURY.

IMPORTANT! Engine should not idle longer than 9 consecutive hours. Damage to the emission control system will result. When this machine idles for an extended period excess hydrocarbon buildup is created in the DOC/SCR aftertreatment system. Burn off of excess hydrocarbon at full load immediately after a long idle period will generate excess heat which will cause damage to emission control system components.

36782BENG R0

1. Follow the STARTING ENGINE – SEE ENGINE MANUAL instructions for COLD WEATHER STARTING procedure.

IMPORTANT! To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.

Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturer operator's manual.

2. During the engine warm-up period constantly monitor engine coolant temperature and engine oil pressure. Stop engine if any pressure or temperature does not meet the specification.

3.

Continue with MACHINE PREPARATION procedure when the engine coolant temperature registers NORMAL.

2.91

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

MACHINE PREPARATION SYSTEM TEST AND WARM-UP

WARNING

Before commencing operations, proceed with steps (a) through (n) to accomplish: • Warm up the hydraulic system.

• Test all systems for proper operation.

• Inspect for hydraulic oil leaks.

Assuming machine was parked on level ground at last shutdown:

Ensure that the saw blade has stopped rotating before leaving the cab.

WARNING

CAUTION If any system fails to respond to the controls, stop the warm-up procedure and call a mechanic, otherwise serious damage to pumps and other components could result.

Never use your bare hand to check for fluid leaks.

Fluid leaks under pressure may not be visible. When searching for leaks, wear work gloves and use a wrench or piece of wood to move hydraulic hoses. Do not grab hold of hydraulic hoses. Wear safety goggles for eye protection.

(a) Start engine. (b) Ensure computer display is indicating normal operating conditions. (c) Check that all personnel are clear of the machine. (d) Set engine speed to 1100 rpm. (e) Slowly raise and lower boom, check for proper operation.

With the attachment raised slightly off the ground: (f) Operate the accumulator and clamp arms and check for proper operation. (g) Tilt the attachment forward and back and check that it is operating correctly. (h) Steer the machine to the left and right. (i) When cold weather conditions exist, continue the process of warming up the hydraulic system by repeating steps (e) through (h) several times. As the hydraulic system warms up, engine speed can be increased gradually to the HIGH IDLE position. (j) Turn attachment on. (k) After completion of the warm-up and system testing, turn the attachment OFF, stop the blade and rest the attachment on the ground. (l) Set the parking brake ON. (m) Set engine speed to LOW IDLE. (n) Leave the cab and visually check hose connections and cylinders for leaks. Check under the machine for oil leaks.

2.92

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

STOPPING ENGINE

CARE OF THE MACHINE

IMPORTANT! Stopping the engine immediately after it has been working under load can result in overheating and premature wear of the engine components. Follow the stopping procedure outlined below to allow the engine to cool.

1. Ensure that all fluid levels are always at the proper level. Use the preventative maintenance schedule in SECTION 3 of THIS MANUAL. 2. Apply grease to all lubrication points at required intervals.

1. Park machine on level ground and rest attachment on the ground.

3. Do not apply load to a cold engine.

4. Close and secure all doors and access covers.

2. Reduce engine speed to LOW IDLE and let run for approximately three minutes to allow gradual dissipation of heat and also to reduce turbocharger speed. Loss of coolant by after boil, and possible hot-spot damage to the engine is also prevented.

5. Do not allow branches, twigs, leaves or pine needles to build up around radiator intake doors or anywhere else on the machine.

Clean frequently.

4. Engage parking brake.

6. Be sure that the attachment is resting on the ground before servicing or parking the machine.

5. Stop engine by turning key switch to the OFF position.

7. Follow proper procedure for cleaning windows described in this section.

NOTE: Whenever the engine is stopped, all DEF solution is pumped back to tank before the engine power system is turned off. This process takes approximately 90 seconds. Refer to SELECTIVE CATALYTIC REDUCTION SYSTEM in Section 3 for more information.

IMPORTANT! When cleaning the machine with pressurized water it is important to avoid getting water directly or indirectly into the exhaust tube. Water in the exhaust tube will damage sensors and SCR system components and affect the proper operation of the aftertreatment system and the engine.

3. Do not race engine before shut-off.

NOTE: This machine is equipped with an After Run/Accessory Relay which delays by 90 seconds the power disconnect to engine related fuses and relays.

WARNING • Before leaving the machine, park it in a safe position on level ground.

• Engage parking brake, lower the attachment to the ground.

• Never work behind, in front of, or below a machine that has been parked on a grade.

• Take additional precautions by placing the wheels against a rock, tree or other secure object.

IMPORTANT! Only use the battery disconnect switch to shut off a running machine in an emergency. A fault code is logged by the ECU on the engine for improper shut down and power down.

2.93

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

CARE OF POLYCARBONATE CAB WINDOWS (Windshield, skylight and three rear windows) Most windows used in the cab are made from a polycarbonate resin thermoplastic. This material is a replacement for glass when improved strength, durability and safety is required.

Windows with these defects must be replaced immediately.

• Bent, dented or missing window retaining parts must be replaced immediately.

• Rubber materials used in mounting the window must be maintained in good condition.

Polycarbonate material is expected to resist heavy impact from large branches and falling tree tops and to absorb high levels of energy when contacted by high velocity thrown objects such as wood chips, disc saw blade teeth or broken harvester head saw chain.

• Identification of the polycarbonate originally used by Tigercat is hot stamped in a corner of the window to identify its composition. Do not use any replacement window without proof of its material composition. Do not substitute with any other materials.

The extreme operating environment seen in logging applications heightens the need to regularly inspect and properly maintain polycarbonate cab windows.

• Skylights, cab structures, windows and window retaining parts must not be modified or replaced with components that are not approved by Tigercat.

Polycarbonate windows are an essential piece of operator protective equipment and should be maintained as such. It is important to note that cracks, chips, notches or scarring anywhere on the viewing surface or edges of the window decreases its ability to resist heavy impacts, and therefore compromises its effectiveness as operator safety protective equipment. Windows with these defects must be replaced immediately.

RESISTANCE TO CHEMICALS The resistance of polycarbonate material to chemical exposure varies widely. Fortunately, polycarbonate materials have good resistance to diesel fuel, grease, hydraulic oil, kerosene and engine oil.

Other chemicals however can seriously weaken the polycarbonate.

DO NOT permit any of the following chemicals to come into contact with polycarbonate windows: • Acetone

Refer to the next section for detailed information regarding inspection and maintenance of polycarbonate windows.

INSPECTION AND MAINTENANCE Daily inspection and maintenance is essential to confirm that the window’s ability to protect the operator has not been compromised.

• Inspect all windows daily and immediately after any impacts.

• Air Conditioning Refrigerant • Ammonia • Anti-Freeze • Benzene • Brake Fluid

• Check for any damage to the window material or steel structure in the area of the window mounting.

• Carbon Tetrachloride • Cutting Oils

• The edges of the polycarbonate window must be evenly and fully supported on a flat surface around the entire window opening at all times.

Bent or dented skylight structures must be replaced immediately. Bent or dented cab structures must be evaluated immediately for possible repair or replacement.

• Gasoline • Lacquer Thinner • Toluene • Turpentine • Xylene RESISTANCE TO WATER

• The edges of the polycarbonate window must be free from cracks, chips, notches or scarring and must not be pinched or stressed.

These defects decrease the ability to resist heavy impacts. Windows with these defects must be replaced immediately.

Polycarbonate material has good resistance to water up to approximately 65°C (150°F). Above this temperature the effect of water is timetemperature related. This means that the higher the water temperature, the shorter the time before the polycarbonate is adversely affected.

• Cracks, chips, notches or scarring anywhere on the viewing surface of the window decreases the ability to resist heavy impacts.

2.94

Tigercat 720G/724G/726G Feller Buncher Exposing polycarbonate to repeated steam cleaning or high temperature pressure washing may result in crazing, a phenomenon that causes clouding of the surface. Crazing can ultimately result in a loss of physical strength and may precede a fracture.

• DO NOT use brushes, razor blades, scrapers, squeegees or other sharp tools on polycarbonate windows.

• DO NOT clean polycarbonate windows when the daytime temperature is high or in direct sunlight.

CLEANING INSTRUCTIONS

• DO NOT use abrasive or highly alkaline cleaners on polycarbonate windows.

The viewing surfaces of polycarbonate cab windows are specially treated with a hard coating to provide enhanced resistance to abrasion and ultra-violet (UV) radiation.

• DO NOT use glass cleaners in either aerosol or non-aerosol containers to clean polycarbonate windows.

The following instructions are provided to prolong the life of this protective hard coating.

• Failure to follow these cleaning instructions shortens the service life of polycarbonate, and may cause visual hazing, loss of light transmission, and delamination of the polycarbonate hard surface coating.

1. Rinse the window thoroughly with lukewarm water 2. Using a soft cloth, cellulose sponge or chamois, gently wash the window with a mild solution of soap or detergent in lukewarm water. Do not scrub or use brushes or squeegees.

CONCEALING HAIRLINE SCRATCHES The appearance of scratches and minor abrasions on the surfaces of polycarbonate windows can be minimized by using a mild automotive polish such as:

Brand name soaps and detergents recommended for cleaning polycarbonate are: • • • • • • • • •

Controls and Operation

• • •

Fantastik Formula 409 Hexcel F.O. 554 Joy Lysol Mr. Clean Neleco-Placer Pine-Sol Top Job

Johnson’s Paste Wax Novus Plastic Polish #1 and #2 Mirror Glaze Plastic Polish

Be certain to clean the polycarbonate window as outlined prior to application of an automotive polish. Refer to CLEANING INSTRUCTIONS. GRAFFITI REMOVAL • For removal of paints, marking pen inks, etc., the use of Butyl Cellosolve is generally effective. The use of masking tape, adhesive tape or lint removal tools works well for lifting off old weathered paints.

3. Rinse the window thoroughly with lukewarm water.

4. Dry the window with a moist soft cloth, cellulose sponge or chamois to prevent water spotting.

• To remove labels, stickers, etc., the use of kerosene, VM&P Naphtha, or petroleum spirits is generally effective. When the solvent does not penetrate sticker material, apply heat (e.g., hair dryer) to soften the adhesive and promote removal.

5. To remove grease or oil, first rub lightly with a good grade of VM&P Naphtha or isopropyl alcohol followed by the same rinse, wash, rinse and dry procedure described in steps 1 to 4.

Refer also to RESISTANCE TO CHEMICALS for a list of chemicals which should not be permitted to come into contact with polycarbonate windows.

Refer also to RESISTANCE TO CHEMICALS for a list of chemicals which should not be permitted to come into contact with polycarbonate windows.

FIRE PRECAUTIONS

CAUTIONS

Polycarbonate window material ignites when exposed to an ignition source in excess of 427°C (800°F). When working around polycarbonate windows, observe similar fire precautions to those in place for wood.

• DO NOT use abusive cleaning procedures either by hand or pressure washing on polycarbonate windows.

2.95

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

CLEANING INSTRUCTIONS FOR GLASS WINDOWS (BOTH DOORS) Normal window cleaning procedures are acceptable.

WINDOW SCREEN HANDKNOB

173-25

SIDE WINDOW SCREEN

SIDE WINDOW SCREENS The side window screens can be opened to clean the windows. Screens are provided for the personal protection of the operator. A hand knob is provided on both the inside and the outside. By unscrewing either (not both) of these knobs, the screen is free to swing out on the hinges. Be aware that the screen swings outwards with considerable force if the door is open.

720D-024

HINGED SIDE WINDOW SCREENS All handles should be hand tight only at all times.

2.96

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

TOWING INSTRUCTIONS A machine malfunction may make towing necessary.

Towing is only recommended over short distances. It is always better to make repairs at the point where the machine is parked whenever possible.

IMPORTANT! Before towing, the transmission must always be placed in NEUTRAL.

342-3

Never tow a machine in gear. The extremely high forces that are created cause significant damage to the components of the hydrostatic drive system and the transmission.

WIDERANGE TRANSMISSION SHOWN IN NEUTRAL

Raise the felling attachment off the ground and install the boom cylinder lift lock. Turn off the engine.

Never tow the machine at over 3 km/h (2 mph).

Doing so causes significant damage to the transmission.

LIFT BOOM

Never press the forward or reverse pedals while the transmission is in neutral. Doing so causes significant damage to the transmission.

CYLINDER

1. To facilitate towing, the transmission must be placed in NEUTRAL. This disconnects the wheels from the hydraulic motor.

On two-speed transmissions, shift the gear shift lever in the cab to NEUTRAL.

T–HANDLE

On WideRange transmissions, place a short bar through the hole in the lever and pull upwards to put the transmission into NEUTRAL as shown below.

726E-073

LIFT BOOM CYLINDER LOCK IN LOCK POSITION

2. Install articulation lock bar. See instructions later in this section.

FRONT CHASSIS

REAR CHASSIS

RETAINING PIN

LYNCH PIN

342-1

LOCK BAR

WIDERANGE TRANSMISSION SHOWN ENGAGED 726D-039

2.97

LOCK BAR IN LOCKED POSITION

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation STEERING CYLINDERS

STEERING CYLINDERS

C6

PILOT MANIFOLD

NORMAL HOSE CONNECTIONS

SM47

PORTA POWER

HOSES CROSS CONNECTED FOR TOWING

718D-046 726E-022

3. To allow the machine to steer while towing and prevent damage to the steering cylinders, cross hydraulic hoses on one of the steering cylinders. This allows trapped oil to flow freely between the two steering cylinders, providing ease of turning with some dampening effect.

PARKING BRAKE

Block the wheels. Remove parking brake supply hose from pilot manifold (C6) and connect to a remote power source. Plug port on pilot manifold. Pressurize circuit to 17 bar (250 psi) to disengage parking brake.

5. Remove articulation lock bar.

4. This machine is equipped with a hydraulic deactivated parking brake. It is necessary to provide portable hydraulic pressure at the parking brake supply (C6) on the pilot manifold to release it.

6. The machine is towed from the rear, making use of the towing lug underneath the bumper.

Make sure a vehicle of equal power and size is used for towing.

When going downhill use a holdback vehicle, as the machine is now without any effective braking.

PARKING BRAKE ASSEMBLY

7. When towing is completed, install the articulation lock bar and reconnect the steering cylinder hoses to their proper locations.

SPRINGS

STATIONARY DISCS

DRIVE SHAFT

ROTATING DISCS

724E-007 724E-008 724E-016

HYDRAULIC DEACTIVATED PARKING BRAKE 2.98

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

TRANSPORTING INSTRUCTIONS IMPORTANT! When transporting the machine, Chains must be used to prevent forward, reverse and side to side movement of the machine.

The machine may be transported with the wheels on or off. If the wheels are removed the machine must be blocked so that the center joint is one inch or more above the truck bed.

With the wheels on or off: • The attachment must be lowered to the truck bed.

• The articulation lock bar must be installed.

• The machine must be crossed chained (side to side) over and around both the front and rear axles.

IMPORTANT! Do not secure the machine to the truck anywhere near the center joint area as this can seriously damage the center joint.

Use only transport regulation chains for this purpose. For example, a 5/16" grade 7 with a tensile strength of 43636 kg/chain (96,000 lb/ chain). Using inferior or damaged chains could cause the load to shift.

The chains must be looped around the axles and hooked back onto the links of the chain creating a full loop around the axles. The chains should be attached to the opposite sides of the trailer and evenly tensioned with the load binders.

A

F B I

H G J E C

D G,H

I,J

A B C D E F G H I J 49360BUNI R1

E,F

2.99

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation ARTICULATION LOCK BAR 1. Position machine on level ground and steer machine into a straight ahead position.

2. Lower attachment to the ground, apply parking brake, stop engine and remove key.

WARNING To prevent movement of machine and possible injury, install articulation lock bar before performing any work in the center joint area.

3. Remove both retaining pins from the front and rear chassis. Slide lock bar out of front chassis and into tube socket on rear chassis.

Line up holes at each end of lock bar with holes in chassis. Secure in place with both retaining pins. Install lynch pins.

FRONT CHASSIS

REAR CHASSIS

RETAINING PIN

LYNCH PIN

726D-039

LOCK BAR

LOCK BAR IN LOCKED POSITION

4. After work is completed, slide lock bar into front chassis storage position and hold in place with retaining pin. Store second retaining pin in rear chassis tube socket.

Install lynch pins.

2.100

Tigercat 720G/724G/726G Feller Buncher

Controls and Operation

LIFT BOOM CYLINDER LOCK

LIFT BOOM

Before performing work under the attachment or lift boom, ensure that the attachment is firmly supported on level ground, on solid stands or, install lift boom cylinder lock.

CYLINDER

T-HANDLE

726E-073

LIFT BOOM CYLINDER LOCK IN LOCK POSITION

Completely raise lift boom and place lock over one of the two cylinder rods with the open side facing down and wide end against the cylinder gland. Install T-handle retaining bolt through center hole.

Do not place yourself under the boom or attachment, while doing this. Do not damage the piston rod when installing the boom lift lock. Turn off the engine, turn key back to RUN position, press the INTERLOCK RESET switch to activate the pilot oil system.

CYLINDER LOCK

SLOWLY lower the boom until the boom lift lock is securely in place.

INTERLOCK RESET SWITCH

724G-003

CYLINDER LOCK STORAGE

The lift boom cylinder lock is stored on the inside of the hydraulic pump compartment door.

WARNING Always install lift boom lock before working on or around machine with boom raised.

• Always install T-handle retainer bolt • Use only to support boom and attachment.

M726E-044

CONTROL PANEL

To remove the boom lift lock, start the engine, press INTERLOCK RESET switch and raise the boom completely. Without placing yourself under the boom or attachment, remove the T-handle retainer bolt, remove the boom lift lock and reinstall it on the inside of the service compartment door.

2.101

Controls and Operation

Tigercat 720G/724G/726G Feller Buncher

2.102

Tigercat 720G/724G/726G Feller Buncher SECTION 3 – LUBRICATION AND MAINTENANCE CONTENTS – SECTION 3

ISSUE 3.0, FEBRUARY, 2015

AFTER TREATMENT SYSTEM..............................................................................................................3.29 APPROVED ANTI-SIEZE PASTES......................................................................................................3.39 CATALYTIC CONVERTER...................................................................................................................3.37 DENOX 2.2 DOSING SYSTEM............................................................................................................3.35 DIESEL EXHAUST FLUID (DEF) TANK...............................................................................................3.33 DIESEL OXIDATION CATALYST (DOC)...............................................................................................3.36 DOSING MODULE (DEF INJECTOR)..................................................................................................3.37 EXHAUST FLAP...................................................................................................................................3.36 HEATER VALVE / HEATED DEF SUPPLY LINES................................................................................3.35 HUMIDITY SENSOR............................................................................................................................3.38 MIXER TUBE........................................................................................................................................3.37 NH3 SENSOR......................................................................................................................................3.38 NOX SENSOR......................................................................................................................................3.38 SUPPLY MODULE................................................................................................................................3.36 TEMPERATURE SENSORS................................................................................................................3.38 AIR CLEANER MAINTENANCE.............................................................................................................3.26 AIR CLEANER UNLOADER VALVE.......................................................................................................3.27 AIR CONDITIONING SYSTEM, CHECKING..........................................................................................3.44 AIR FILTER ELEMENTS............................................................................................................... 3.26, 3.28 AIR INTAKE SYSTEM, ENGINE AIR CLEANER FILTER ELEMENTS.......................................................................................................................... 3.28 IMPORTANT STEPS TO FOLLOW WHEN CHANGING FILTER ELEMENTS................................ 3.28 FILTER RESTRICTION INDICATOR....................................................................................................3.26 INTAKE TUBING AND JOINTS............................................................................................................3.28 APPROVED ANTISIEZE PASTES FOR EXHAUST / AFTER TREATMENT SENSORS........................3.39 BELT, ENGINE SERPENTINE, REPLACING..........................................................................................3.49 BRAKE, PARKING..................................................................................................................................3.49 CASE DRAIN STRAINER.......................................................................................................................3.24 CENTER JOINT LUBRICATION......................................................................................................................................3.45 MAINTENANCE....................................................................................................................................3.45 CONVERSIONS, COMMON...................................................................................................................3.61 DEF (DIESEL EXHAUST FLUID) DRAINING THE TANK..........................................................................................................................3.34 HANDLING AND STORAGE................................................................................................................3.40 TANK.....................................................................................................................................................3.33 DENOX 2.2 SYSTEM..............................................................................................................................3.29 DIESEL EXHAUST FLUID (DEF) HANDLING........................................................................................3.40 DIESEL OXIDATION CATALYST/SELECTIVE CATALYTIC REDUCTION AFTER TREATMENT SYSTEM (DENOX 2.2 SYSTEM)........................................................................3.29 DRAINING THE DIESEL EXHAUST FLUID TANK.................................................................................3.34 DRIVE SHAFT SPLINE LUBRICATION, MIDDLE AND REAR...............................................................3.50 EMERGENCY EXITS, CHECK DAILY......................................................................................................3.7 FILTERS DEF SUPPLY MODULE FILTER..........................................................................................................3.19 ENGINE AIR.........................................................................................................................................3.26 ENGINE OIL.........................................................................................................................................3.16 FUEL.....................................................................................................................................................3.16 FUEL/WATER SEPARATOR.................................................................................................................3.16

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

HYDRAULIC OIL RETURN FILTERS...................................................................................................3.21 HYDRAULIC OIL RETURN STRAINERS.............................................................................................3.23 HYDROSTATIC CHARGE PUMP PRESSURE FILTERS....................................................................3.24 SERVICING GUIDELINES FOR OIL FILTERS...........................................................................3.21, 3.24 FIRE PREVENTION..................................................................................................................................3.8 FUEL REFUELING.........................................................................................................................................3.41 FUEL TANK.............................................................................................................................................3.41 HYDRAULIC OIL HAND FILL PUMP......................................................................................................3.25 HYDRAULIC OIL RETURN STRAINERS...............................................................................................3.23 HYDRAULIC OILS..................................................................................................................................3.13 LUBRICATION AND SERVICE POINTS.................................................................................................3.15 NEW MACHINE MAINTENANCE FIRST 125 HOUR INSPECTION AND SERVICE REPORT...................................................................3.3 INITIAL PRE-DELIVERY INSPECTION..................................................................................................3.3 TIGHTENING POINTS...........................................................................................................................3.3 OIL ANALYSIS PROGRAM............................................................................................................... 3.4, 3.5 OIL LOST FROM LEAKAGE.....................................................................................................................3.3 OIL SAMPLE COLLECTION PROCEDURES...........................................................................................3.5 PARKING BRAKE...................................................................................................................................3.49 PRESSURE SETTINGS..........................................................................................................................3.56 PRESSURIZED WATER SYSTEM MAINTENANCE..............................................................................3.42 PUMP, HYDRAULIC OIL HAND FILL......................................................................................................3.25 REFUELING............................................................................................................................................3.41 REFUELING DIESEL FUEL FUEL TANK...........................................................................................................................................3.41 SCHEDULED MAINTENANCE GENERAL............................................................................................................................... 3.6, 3.7, 3.8 8 HOURS................................................................................................................................................3.9 48 HOURS..............................................................................................................................................3.9 125 HOURS..........................................................................................................................................3.10 250 HOURS..........................................................................................................................................3.10 500 HOURS..........................................................................................................................................3.10 1000 HOURS........................................................................................................................................3.11 1500 HOURS........................................................................................................................................3.11 2000 HOURS........................................................................................................................................3.12 SERVICE AND LUBRICATION POINTS.................................................................................................3.15 SPEED CONTROL LEVER ADJUSTMENT............................................................................................3.52 STARTUP PROCEDURE AFTER MAINTENANCE................................................................................3.46 STRAINERS CASE DRAIN........................................................................................................................................3.24 FUEL TANK...........................................................................................................................................3.18 HYDRAULIC OIL RETURN..................................................................................................................3.23 TORQUE CHART, GENERAL.................................................................................................................3.55 TORQUE, FLUID CONNECTIONS..................................................................................... 3.57, 3.58, 3.59 TRANSMISSION.....................................................................................................................................3.45 CHECK OIL LEVEL...............................................................................................................................3.45 WEIGHTS OF COMMERCIAL WOOD....................................................................................................3.60 WHEELS, INSTALLING.............................................................................................................................3.3

3.2

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

PREVENTIVE MAINTENANCE SCHEDULE NEW MACHINE MAINTENANCE *INITIAL PRE-DELIVERY INSPECTION:PERFORM THE INITIAL PRE-DELIVERY INSPECTION USING Tigercat FORM NUMBERS 5340 AND 5347; "PDI AND 125 HOUR INSPECTION REPORT"

*FIRST 125 HOUR INSPECTION AND SERVICE REPORT:WITH THE OWNER'S MECHANIC PRESENT, PERFORM AN INSPECTION AND SERVICE ACCORDING TO THE Tigercat FORM NUMBERS 5340 AND 5347; "PDI AND 125 HOUR INSPECTION REPORT" THIS MUST BE COMPLETED WITHIN THE FIRST 125 HOUR TIME FRAME. *IMPORTANT: TO QUALIFY FOR CONTINUED WARRANTY, THIS REPORT MUST BE COMPLETED AND RETURNED TO Tigercat Industries Inc. WARRANTY DEPARTMENT.

Tightening points for First 125 hour inspection report: All hydraulic connections Hose clamps Center joint pin securing bolts Transmission securing bolts Engine mounting bolts Pump drive gearbox securing bolts Axle mounting bolts Wheel retaining bolts Cab securing bolts Pin retainers Any other loose nut, bolt or fitting

IMPORTANT! Wheels: When installing wheels, ensure that all paint has been removed from the mating surfaces of both the wheel disc and the flange of the axle to ensure metal to metal contact.

For additional instructions also refer to section 8 of the service manual.

Hour meter – maintenance:

NOTE: Use of filters other than genuine Tigercat replacement filters is not recommended.

Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

Check the engine hour meter on a regular basis to determine your scheduled maintenance times.

The intervals and times on the scheduled maintenance chart in this manual are for normal operating conditions.

If your machine is being operated in difficult or severe conditions, you should service your machine at shorter intervals.

*OIL LOST FROM LEAKAGE

PER LEAKAGE RATE DAY ONE DROP IN 10 SECONDS 0.424 ONE DROP IN 5 SECONDS 0.852 ONE DROP PER SECOND 4.26 THREE DROP PER SECOND 14.2 DROPS BREAK INTO STREAM 90.83

LOST OIL (LITERS) LOST OIL (GALLONS) PER PER PER PER PER MONTH YEAR DAY MONTH YEAR 12.72 152.0 0.112 3.36 40.0 25.6 306.6 0.225 6.75 81.0 127.76 1533.1 1.125 33.75 405.0 425.86 5110.31 3.75 112.5 1350.0 2725.5 32706.0 24.00 720.0 8640.0

3.3

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

TIGERCAT OIL ANALYSIS PROGRAM Using the Tigercat Advanced Oil Analysis Program on a regular basis is an excellent preventative maintenance tool. Oil sampling cost is at the owner’s expense, however, studies have shown that it is possible to receive a 10 to 1 payback when looking at the amount saved on repair costs to the amount invested in a scheduled oil analysis program. Some of the benefits of a sampling program include: •

Detect problems early before they become major catastrophic failures.

•

Better ability to schedule downtime and forecast cost of repairs.

• Monitor maintenance schedules and practices and confirm that the required maintenance is being done on time.

•

Increase used equipment value by providing proof of proper maintenance.

This Program uses the most modern technology available to analyze all oil samples. Most test results are available within 24 hours after receipt of the sample and are supplied in an easy to understand report, which calls for specific action and makes detailed recommendations. This report is available as a mailed or faxed hardcopy, sent via e-mail or can be viewed on the internet.

This program will provide Tigercat machine owners access to an Advanced Oil Analysis Program for all major machine components including powertrain components, specifically hydrostatic pump and motors, boom/steer pump, axles, transfer case, pump drive gearbox, etc.

700 Series

Location

First Sample

Follow-up Samples

Hydraulic Oil

125 hours

Every 1000 hours or 6 Months

Transmission

125 hours

Every Oil Change (500 hours or 3 Months)

Pump Drive Gearbox

125 hours

Every Oil Change (500 hours or 3 Months)

Front & Rear Axle

125 hours

Every Oil Change (1000 hours)

Tigercat Oil Analysis Kits are available from your Tigercat dealer parts department. If required, arrangements can also be made with your Tigercat dealer to supply and perform all of the required followup oil samples.

Refer also to OIL SAMPLE COLLECTION PROCEDURES in THIS SECTION for sample valve and drain plug locations.

TIGERCAT OIL ANALYSIS KITS Each kit includes a Prepaid Sample Bottle and Sample Information Form. Preprinted mailing labels are also included to ensure all samples are quickly returned directly to the lab for immediate analysis and results within 24 hours of receipt.

The same type of sample bottle can be used for all types of oil testing including: Hydrostatic pump and motors, boom/steer pump, axles, transfer case, pump drive gearbox, etc.

To ensure accurate and meaningful results are obtained, each kit also includes detailed instructions on how to properly collect, prepare and ship the oil samples.

Contact your Tigercat Dealer Parts Department to order Kits.

3.4

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

TIGERCAT OIL ANALYSIS PROGRAM OIL SAMPLE COLLECTION PROCEDURES OIL SAMPLING CONNECTOR

Fill out the Sample Information Form (SIF) completely and accurately. When taking multiple oil samples, fill out all of the required SIF forms in their entirety, prior to taking any oil samples. Then, immediately package each completed SIF form together with the matching oil sample in the black outer shipping container as each individual sample is taken. This will reduce the possibility of mixing up or incorrectly identifying the SIF forms and oil samples. Incorrectly identified samples could result in a false warning alarm.

The accuracy of the lab analysis results is very dependent on the quality of the oil sample taken. Collection of clean oil samples that are representative of the main body of oil are essential if meaningful lab results are to be obtained.

Erroneous readings may result if proper collection, handling, packaging and shipping practices are not followed prior to the sample being tested by the lab. To be able to accurately compare and trend the lab results over time, all follow-up samples should be consistently taken from the same location using the same techniques as all previous samples.

•

Ensure that all sample valves and drain plugs are clean and free of debris.

•

Remove the sample bottle cap only when ready to take the sample. Keep the cap clean — do not put it in your pocket or let it get contaminated in any way.

•

Do not allow any airborne dirt, etc. to enter the sample bottle.

•

Avoid contamination of the sample. Replace the sample bottle cap immediately after filling the bottle to approximately ¾ full. All samples taken should be immediately forwarded to the lab for processing.

Contact your Tigercat dealer to purchase additional or replacement hydraulic sample valves or drain plugs.

In cases where oil samples must be pumped or otherwise drawn out of a reservoir or housing, a hand operated oil suction pump is also available from your Tigercat dealer.

WATER ABSORBING ELEMENT (COLOR BLUE) 724E-082

HYDRAULIC OIL RETURN FILTERS

Hydraulic Oil Samples: •

Hydraulic oil samples should be taken from the circulating oil flow at operating temperature, with no functions actuated, using sample valves that are permanently located on the machine whenever possible.

•

To obtain a representative oil sample, valves must be purged before the actual oil sample is taken. Drain a minimum of 3 or 4 ounces of oil into a separate container and discard this oil using approved recycling methods.

•

Replace the dust cover on the sample valve immediately after taking the oil sample and sealing the sample bottle.

Transmission, Axle and Pump Drive Gearbox Samples: •

These samples can be taken during the oil change process.

•

To obtain a representative oil sample, ensure the oil is warm and has not settled very long (within 30 minutes of shutdown).

•

Place the required drain container under the machine to capture the used oil to be discarded using approved recycling methods.

•

Remove the drain plug and allow approximately 50% of the oil to drain, then place the sample bottle in the stream of draining oil to obtain a representative sample.

3.5

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

GENERAL CAUTION All handles, steps and platforms must be kept free of grease, oil, fuel, mud, snow, ice and forest debris to prevent risk of personal injury. þ Clean around filler caps before checking or adding fluids. þ Clean around hydraulic fittings before breaking connection. Plug or cap immediately. þ Clean up spills as soon as possible. þ Always use clean hydraulic oil and filters. þ Drain dirty oil while still warm. þ Do not exceed recommended fluid levels. þ Service all hydraulic filters after the failure of a pump, motor, cylinder or valve. Failures of this nature could contaminate the entire hydraulic system. þ Top up diesel fuel at end of each shift to reduce contamination by condensation. þ Clean up oil spills on walking surfaces and top of engine enclosure immediately. þ Inspect the exhaust system daily for any signs of leakage. Check for worn, cracked, broken, or damaged pipes or muffler. Also check for missing or damaged bolts or clamps. Should any exhaust leaks or defective parts be found, repairs must be made immediately. Engine exhaust leaks can cause fires. DO NOT OPERATE the machine until the exhaust leak is repaired.

þ During daily operation of the machine, the occurrence of exhaust leaks are usually accompanied by a change or increase in engine exhaust noise levels. These audible warnings cannot be ignored. Should any exhaust leaks occur during operation, the machine must be shut down immediately and not put back to work until the necessary repairs have been completed. þ Before welding on machine, be sure to disconnect all electrical connections and follow all servicing safety precautions as outlined in PRIOR TO WELDING in Section 1. þ Clean away all branches, bark and chips.

Clean up all traces of oil to avoid fires. þ Always have a fire extinguisher at hand. þ For safety, always lower boom assembly to the ground when leaving cab, leaving machine unattended or during service. þ For safety, when working under boom, always lower to ground, support properly or install lift boom cylinder locking device. (Refer to Section 2.) __________

3.6

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

GENERAL CHECK EMERGENCY EXITS, DAILY:

A

M726E-019

M726E-016

SKYLIGHT OUTSIDE HANDLES

LH DOOR PRIMARY EXIT

Two alternate exit routes are provided:

A 726E-070

SKYLIGHT – INSIDE HANDLES

SKYLIGHT/EMERGENCY EXIT

M726E-017

RH DOOR ALTERNATE EXIT

The Skylight serves as a third exit from the cab should the two doors become blocked. There are two retaining handles (A) on the inside and two on the outside to allow removal of the hatch from either side.

• Right hand cab door.

SKYLIGHT

Turn the handles in the direction indicated on the label to remove the skylight. These handles should only be HAND TIGHTENED, to allow them to be unscrewed in case of an emergency.

M726E-017

SKYLIGHT ALTERNATE EXIT

The RH Cab Door and Skylight are only to be used if the left hand cab door cannot be opened.

It is therefore essential that these emergency exits be checked every day to ensure they are fully operational.

• Skylight/emergency exit.

3.7

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

GENERAL FIRE PREVENTION Maintaining your machine properly will greatly extend its life and reduce your operating costs.

Fire can result in a machine loss which can be financially devastating.

CAUTION

CHECK CHARGE GAUGE DAILY

AFTER transporting (trucking) a machine from one job sight to the next, open all doors and access panels and blow off any debris that could have re-positioned itself onto the engine and exhaust parts due to wind turbulence caused by the journey.

1. Forest debris and fine organic material (twigs, pine needles, branches, bark, leaves, saw dust, small wood chips) and any other combustible materials when allowed to accumulate, form a fuel source that when ignited is extremely difficult to extinguish. A thorough program of regular cleaning and washing will reduce the possibility of a fire starting. In the event a fire does start, the regular cleaning program will improve the chances of successfully extinguishing a fire.

2. Pay close attention to wiring and plumbing routing during maintenance, ensure that ALL wiring harnesses or hydraulic hoses are properly restrained and clamped to prevent damage from chafing.

CHECK FIRE EXTINGUISHER, DAILY: A portable fire extinguisher is located in operator's cab. The extinguisher should be checked daily to ensure that it is charged. The pointer on the charge gauge should point to the green region.

If the indicator falls out of this green area, the extinguisher should be serviced immediately.

3. If equipped, read the fire suppression system manual and have the system serviced regularly by qualified personnel.

4. In case of fire lower the boom system to the ground and turn the engine off before discharging the fire suppression system.

Also refer to FIRE PREVENTION in Section 1 for additional information.

Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. Refer to the manufacturer's Use and Information manual for proper usage, additional information and recommended inspection and maintenance intervals.

3.8

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

SCHEDULED MAINTENANCE WARNING

•

Lubricate lift boom and tilt linkage, 9 or 10 fittings (depending on attachment), purge

Clean: • Potentially damaging limbs or sticks from machine.

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS! • Before servicing the machine, allow the engine cooling system, fuel system, exhaust system, hydraulic system and machine surfaces to cool down.

• Use a thermometer to check surface and system temperatures to ensure it is safe to begin service work.

• DO NOT begin service work until the surface or system temperature has cooled down to below 100°F (38°C)!

EVERY 8 HOURS (EVERY SHIFT):

•

Air conditioner condenser, charge air cooler, oil cooler and radiator if required.

•

Air intake precleaner compartment.

Check: • All engine air intake system components (including charge air cooler) rubber elbows, connector hoses, tubes and clamps for damage, hardening, wear, cracks, leaks, loose clamps or loose hanger bracket hardware and repair or replace immediately.

•

Charge Air Cooler for damage, wear, cracks, or leaks and repair immediately.

•

For leakage around hydraulic components and flexible hoses.

•

Check engine oil level

•

Drain fuel/water separator

•

For loose nuts, bolts and fittings.

•

Check air intake precleaner, clean as required

•

Exhaust system for leaks.

•

Check air cleaner unloader valve

•

Condition and tension of accessory drive belt.

•

Air intake primary filter element

•

•

Check air intake filter restriction indicator

Water pressure gauge in cab 4 bar (60 psi) for pressurized water system.

•

Replace primary filter if indicator is in red zone

•

•

Replace secondary (safety) filter every third primary filter change to guarantee maximum performance and reliability

If the water system has been operated, refer to PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION for refilling and charging instructions.

•

Conduct an overall visual inspection.

•

Check hydraulic oil level

•

Check pump drive gearbox oil level with dipstick

•

Check transmission oil level at dipstick

•

Lubricate mid drive shaft slip joint* 1-fitting, purge *NOTE: Lubricate mid drive shaft slip joint with machine articulated

•

Lubricate center joint bearings, 2-fittings, purge

•

Lubricate steering cylinder ends, 4-fittings, purge

•

Lubricate tilt and lift cylinder ends, 8-fittings, purge

•

Lubricate quick attach locking pins if applicable, 2-fittings, purge

• Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

EVERY 48 HOURS: •

3.9

Check the center joint for looseness. Refer to CENTER JOINT MAINTENANCE in THIS SECTION for instructions. If a problem is found corrective action should be taken immediately.

Refer also to CENTER JOINT in SECTION 11 of the SERVICE MANUAL for more detailed checking and adjustment procedures.

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

SCHEDULED MAINTENANCE EVERY 125 HOURS:

EVERY 250 HOURS:

• Perform 8 hour maintenance

• Perform 8 hour maintenance • Perform 125 hour maintenance

And in addition: • Lubricate rear axle pivot, 2-fittings, purge • Lubricate front drive shaft slip joint 1-fitting, purge • Lubricate rear drive shaft slip joint 1-fitting, purge

And in addition replace: • Engine oil and filter • Oil in pump drive gearbox NOTE: Refer to the service manual Section 8 for oil change procedure.

Check: • Engine coolant level • AC/Heater filters • Air intake primary filter element, check restriction indicator at FULL rpm • Fluid level in batteries unless maintenance free • Hydraulic pump and motor securing bolts • Fuel tank fuel strainer • Torque tightening points as per new machine maintenance • Proper operation of pressurized water system.

(Refer to PRESSURIZED WATER SYSTEM in SECTION 2 of the OPERATOR'S MANUAL and PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION)

• Oil in transmission NOTE: Refer to the service manual section 8 for oil change procedure.

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

Check: • Parking brake oil level.

EVERY 500 HOURS:

Visually check for damage to: • Lift boom and tilt linkage • Front and rear frame • Center joint area • Attachment Make repairs immediately

• Perform 8 hour maintenance • Perform 125 hour maintenance • Perform 250 hour maintenance And in addition replace: • Engine fuel filter • Engine fuel filter/water separator • Hydraulic Oil pressure filter, drive charge pressure † • Hydraulic Oil return filters, boom/fan/steer/saw (high pressure)†

Visually inspect for: • Frayed electrical wiring and hydraulic hose • Wear in any other components

• Lubricate door and door screen hinges.

Clean/replace: • Air conditioner re-circulation filter • Cab fresh air filter • Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

• Transmission mounting. Check, re-torque.

Check: • All hydraulic pressures.

• Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

3.10

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 1000 HOURS:

EVERY 1500 HOURS: • Perform 8 hour maintenance

• Perform 8 hour maintenance

• Perform 125 hour maintenance

• Perform 125 hour maintenance

• Perform 250 hour maintenance

• Perform 250 hour maintenance

• Perform 500 hour maintenance

• Perform 500 hour maintenance

• Perform 1000 hour maintenance

And in addition replace: • Engine air cleaner unloader valve.

And in addition replace: • Engine crankcase ventilation filter

• Strainer in accumulator charge valve.

• Oil in axles, front and rear.

NOTE: Refer to the service manual section 8 for oil change procedure.

• Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

And in addition: • Lubricate front and rear axle pinion grease seal. 1-fitting per axle, purge.

Check: • In-tank fuel strainer.

• Check the center joint for looseness. Refer to CENTER JOINT MAINTENANCE in THIS SECTION for instructions. If a problem is found corrective action should be taken immediately.

Refer also to CENTER JOINT in SECTION 11 of the SERVICE MANUAL for more detailed checking and adjustment procedures.

• Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

† Use of filters other than genuine Tigercat replacement filters is not recommended.

3.11

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

SCHEDULED MAINTENANCE EVERY 2000 HOURS:

SEASONAL: • Drain and refill hydraulic oil tank with recommended hydraulic oil. See "approved hydraulic oils".

• Perform 8 hour maintenance • Perform 125 hour maintenance • Perform 250 hour maintenance

• Drain and refill pressurized water system.

(Refer to PRESSURIZED WATER SYSTEM in SECTION 2 of the OPERATOR'S MANUAL and PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION)

• Perform 500 hour maintenance • Perform 1000 hour maintenance • Perform 1500 hour maintenance And in addition replace: • Oil in hydraulic tank.

• Hydraulic tank breather.

• Oil in hydraulic parking brake.

• Water in pressurized water system.

• All air intake rubber components such as elbows and connectors. High temperatures in this area can cause the rubber to harden.

See AIR CLEANER MAINTENANCE in THIS SECTION. • Check ALL air intake tubing, rubber couplings and band clamps for signs of wear and leakage and repair immediately.

• Refer to engine operation and maintenance manual and attachment manual for additional required maintenance at this scheduled time period.

NOTE: When refilling the hydraulic system, vent pumps, motors and valves of air by opening a plug or hose fitting located near or on top of the pumps, motors and valves until oil free of air is seen flowing out of the plug or hose fitting. Failure to vent air from the hydraulic system could cause serious damage to hydraulic components. Tighten plugs or fittings and clean up any spilled oil when completed.

NOTE: Changing strainers, filters and replacing the hydraulic oil tends to aerate the oil. For maximum pump life, the machine should sit for 1 hour after servicing to allow entrained air to escape from the oil prior to applying working pressures to the pumps.

NOTE: Check all hydraulic system components especially cooling fan for proper operation after hydraulic oil has been replaced.

3.12

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

APPROVED HYDRAULIC OILS

3.13

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

FRONT DRIVE SHAFT STEER CYLINDERS 1 FTG/125 4 FTG/8 24

ATTACHMENT 27

5

2

8

7

13

28

6 10 11 18 14 17

26

BOOM CYLINDER PINS ENCLOSURE HINGES 8 FTG/8 10 FTG/500

15 9 16 REAR DOOR HINGES 2 FTG/500

DOOR SCREEN HINGES 8 FTG/500

BOOM/LINK PINS 10 FTG/8

AXLE OSCILLATION 2 FTG/125

19 28

13

1

9

6

12 3 20 4 29

22

21

23

AXLE PINION 1 FTG/1000

25

CENTER JOINT 2 FTG/8

22 AXLE PINION 1 FTG/1000

24

MID DRIVE SHAFT 1 FTG/8

23

REAR DRIVE SHAFT 24 1 FTG/125

LEGEND *** 2 FTG/125  

†

STEER MACHINE FULLY BEFORE GREASING MID DRIVE SHAFT SLIP YOKE. LUBRICATION POINT WITH A DESIGNATED NUMBER OF FITTINGS (2 FTG) AND HOURS BETWEEN SERVICING (125 ). JOINT TO BE PURGED. USE LITHIUM BASED GREASE CONTAINING MOLYBDENUM DISULFIDE. USE OF FILTERS OTHER THAN GENUINE TIGERCAT REPLACEMENT FILTERS IS NOT RECOMMENDED.

3.14

..........

HOURS CHK ...........

CHECK REP ..........

REPLACE DRN ...........

DRAIN D/R .......... DRAIN AND REFILL LUB .......... LUBRICATE CLN ..........

CLEAN

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

Tigercat Model 720G/724G/726G SERVICE AND LUBRICATION POINTS

REFER TO Tigercat OPERATOR'S MANUAL FOR FURTHER INFORMATION

ENGINE OIL AND FILTER

3

CRANKCASE VENTILATION FILTER

4

FUEL FILTER (ENGINE)

•

•

31

8.2

•

•

REP •

DESCRIPTION QTY

2000 

REP

USG

2

CHANGE COOLANT EVERY 2 YEARS

LITERS

CHK

CAPACITY 1500 

CHK

1000 

CHK

500 

125 

COOLING SYSTEM

8

1

250 

SERVICE POINT NO.

SERVICE EVERY ITEM

60% ANTIFREEZE/40% DISTILLED WATER

1

• SEE ENGINE MANUFACTURER'S OPERATION AND MAINTENANCE MANUAL FOR PROCEDURES AND CAPACITIES

REP •

1

REP

1

CHANGE FILTER EVERY 2 YEARS

1

REFER TO SECTION 3 OF THIS MANUAL FOR DETAILS.

1

CLEAN OR REPLACE AS NECESSARY

1

DRAIN TANK, CLEAN OR REPLACE AS NECESSARY CLEAN AS REQUIRED / INSPECT IMPELLER FOR WEAR OR DAMAGE REPLACE AS NECESSARY

5

FUEL/WATER SEPARATOR

6

DEF SUPPLY MODULE FILTER

7

FUEL CAP SCREEN

8

IN TANK FUEL STRAINER

9

AIR INTAKE PRECLEANER

CHK

1

10

AIR INTAKE PRIMARY FILTER ELEMENT

CHK

1

11

AIR INTAKE SAFETY FILTER ELEMENT

CHK

1

CHECK FILTER RESTRICTION INDICATOR. REFER TO 8 HOUR SCHEDULED MAINTENANCE FOR DETAILS (SECTION 3 IN MANUAL).

12

AIR CLEANER UNLOADER VALVE

CHK

1

REFER TO SECTION 3 IN MANUAL

13

AIR INTAKE CONNECTIONS

CHK

3

CHECK FOR LOOSE CLAMPS AND DAMAGED RUBBER COMPONENTS. REPLACE RUBBER COMPONENTS.

14

HYDRAULIC OIL FILTER BOOM/FAN/STEER/SAW

1

WATER ABSORBING (BLUE)

15 16

HYDRAULIC TANK

DRN CHK

CHK

REP REP REP †

720G/724G 726G

2

CHK

D/R ††

160 166.5

DRAIN AND REFILL AT SEASONAL OIL CHANGE REFER TO MANUAL FOR APPROVED OILS †† CHECK USING VEHICLE DISPLAY MODULE

42 44

17

HYDRAULIC TANK BREATHER

18

HYDRAULIC OIL FILTER HYDRAULIC DRIVE CHARGE PRESSURE

REP †

REP

1

19

A/C & HEATER FILTERS

REP †

2

20

PUMP DRIVE GEARBOX

CHK

D/R

4

1.1

21

TRANSMISSION - WideRANGE - 2 SPEED

CHK CHK

D/R D/R

5.7 4.9

1.5 1.3

22

AXLES: FRONT REAR

D/R D/R

26.5 24.6

7.0 6.5

23

PINION GREASE SEAL - FRONT/REAR AXLE

LUB

24

MID DRIVE SHAFT

CHK

FRONT DRIVE SHAFT

2

PURGE

1

LUB

CENTER JOINT BEARING PRELOAD

CHK 48 

26

PARKING BRAKE

27

ATTACHMENT

LUB

28

PRESSURIZED WATER SYSTEM

CHK TEST

29

ACCUMULATOR CHARGE VALVE STRAINER

ONE FITTING PER AXLE LITHIUM BASE EP2 GREASE

1

LUB

CENTER JOINT

CLEAN OR REPLACE AS NECESSARY CHECK OIL LEVEL. FILL WITH MIL-L-2105C OR API-GL-5 BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140

PURGE

LUB LUB ***

REAR DRIVE SHAFT 25

1

LITHIUM BASE EP2 GREASE 

1 PURGE

2

CHK

CHK

LITHIUM BASE EP2 GREASE  REFER TO SECTION 3 OF THE MANUAL FOR DETAILS.

D/R

0.5

FILL WITH ML-L-2105C OR API-GL-5 LUBRICANT GRADE/WEATHER TEMPERATURE: BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140

0.13

SEE ATTACHMENT MANUFACTURER'S MANUAL CHECK SYSTEM PRESSURE, 60 PSI REFER TO SECTION 2 OPERATOR'S MANUAL.

D/R REP

1

64151BENG R1

3.15

Lubrication and Maintenance FILTERS – REMOVE AND REPLACE IMPORTANT! Failure to service and replace filters at the proper intervals specified in the manufacturer's manuals, could cause damage to the machine and result in the product warranty becoming NULL and VOID. Check Tigercat parts catalog for replacement filters.

Refer to the engine manufacturer's operation and maintenance manual for correct procedures and time intervals when servicing the engine oil and fuel filters. Read and understand the SAFETY section in each of these manuals.

ENGINE OIL FILTER

724E-089

ENGINE COMPARTMENT, RIGHT-HAND SIDE

FUEL FILTER

724E-083

ENGINE COMPARTMENT, LEFT-HAND SIDE

Tigercat 720G/724G/726G Feller Buncher FUEL FILTER AND FUEL FILTER/WATER SEPARATOR The fuel filter is supplied with the engine. Refer to the engine manufacturer's operation and maintenance manual for service information and replacement interval.

The fuel filter/water separator is a combination unit, with a replaceable fuel filter and a removable water sediment bowl on the bottom of the unit.

The water sediment bowl is only replaced if it becomes damaged or non-functional. For service and replacement intervals see SERVICE AND LUBRICATION POINTS in this section.

If the fuel supply is dirty, the fuel filter must be replaced more frequently than recommended in the owner’s manual. Operating the machine with a clogged fuel filter will result in low engine power. It is also recommended that the fuel/water separator bowl be drained daily.

When installing a new fuel filter, DO NOT pre-fill with diesel fuel, or engine fuel pump damage will result. This type of failure is not warrantable by the engine manufacturer.

Unfiltered fuel used to pre-fill filters enters directly into the fuel system. Contaminants in unfiltered fuel can cause significant and costly damage to the engine. The cleanliness of fuel cannot be guaranteed unless it is always pre-filtered before use.

IMPORTANT! Filters that are an integral part of the engine (fuel and lubricating oil) should be serviced and replaced according to the engine manufacturer's operation and maintenance manual.

To prolong the operating life of the fuel filter, ensure that the fuel supply storage tank is clean and free of water and that the fuel is pre-filtered prior to adding it to the machine.

FUEL FILTER/WATER SEPARATOR

724E-080

ENGINE COMPARTMENT, RIGHT-HAND SIDE 3.16

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

Changing the fuel filter/water separator: 1. Park the machine on level ground. Lower the attachment to the ground and stop engine.

PRIMER PUMP

2. Clean the area around the filter and head.

VENT PLUG

3. Attach a hose to the spout on the bowl drain valve, or place a suitable drain pan underneath it.

4. Loosen vent plug on filter head, then open drain valve on separator bowl. Drain fuel.

FUEL FILTER/WATER SEPARATOR

5. Disconnect the fuel heater and water-in-fuel sensor from the wiring harness.

6. Remove the water separator filter and bowl from the filter head.

7. Remove and discard the gasket from the filter head.

8. Remove the water sediment bowl from the bottom of the old filter. Discard this gasket also. Dispose of old filter and any drained fuel properly.

DRAIN VALVE

9. Clean the water sediment bowl, seating area for the gaskets on the filter head, and bowl drain.

726E-004

WATER IN FUEL SENSOR

FUEL FILTER / WATER SEPARATOR

10. Lubricate gasket for bottom of filter and water sediment bowl with clean engine oil. Carefully hand-tighten the water sediment bowl onto the new filter. Close the drain valve.

PRIMER PUMP GASKET

11. Lubricate the gasket on top of the new filter with clean engine oil.

FUEL / WATER SEPARATOR

12. Screw the new filter onto the filter head until the gasket makes contact with the seat. Handtighten an additional 3/4 turn.

GASKET

13. Reconnect the fuel heater and water-in-fuel sensor to the wiring harness.

WATER / SEDIMENT BOWL

14. Use primer pump to refill filter until fuel (free of air) flows from vent on top of filter head.

Tighten vent plug.

BOWL DRAIN

15. Start the engine and check for leaks.

FUEL/WATER SEPARATOR

16. Clean up any spilled fuel before returning machine to operation.

WARNING Drain fuel filter into a container and dispose of all fluids properly.

IMPORTANT! Filters that are an integral part of the engine (fuel and lubricating oil) should be serviced and replaced according to the engine manufacturer's manual.

3.17

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

FUEL TANK STRAINER FUEL TANK O-RING CLEANOUT COVER

STRAINER

724E-006

FUEL TANK STRAINER

The fuel tank strainer is threaded onto the inlet pipe of the engine fuel feed line, located inside the bottom of the fuel tank.

Changing or cleaning the strainer: 1. Park machine on level ground, install articulation lock pin, lower attachment to the ground, stop engine, engage parking brake and block wheels.

2. Drain the fuel tank (remove plug in bottom).

3. Remove the round fuel tank clean out cover plate and O-ring from the access hole.

4. Before removing the strainer, clean any debris from the bottom of the tank and wipe it clean.

5. Remove the fuel strainer using the hex on the end of strainer. Carefully clean the strainer (it can be damaged by rough handling).

6. Check for a buildup of foreign materials where the strainer threads on to the pipe and elbow.

7. Reinstall the strainer.

8. Reinstall fuel tank cover plate with O-ring.

9. Refuel and check for leaks. Start the engine and check for leaks again.

3.18

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

DEF SUPPLY MODULE FILTER The DEF supply module is located in the left rear corner of the machine under the hydraulic fill hand pump and can be accessed through the left hand enclosure hinged door.

The DEF supply module filter should be replaced as part of scheduled maintenance every 2 years.

Changing filter: 1. Park machine on level ground, lower the attachment to the ground, stop engine.

630E-285

6. Find the filter removal tool provided with the replacement parts select the correct edge BLACK (B) for black filters or GREY (G) for grey filters.

2. Wipe clean the area around the filter and supply module.

3. Place rags below to catch the spills.

630E-284

630E-281

7. Insert the tool edge completely until a click is felt or heard.

4. Turn the filter cover counter to remove from the supply module. Use a 27 mm (1 1/16 in) wrench.

630E-286

630E-282

8. Pull out the filter, using a tool in the slot on the filter removal tool if required.

5. Remove the equalizing element and note the color of the filter inside (black or grey).

3.19

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

630E-290 630E-287

9. Clean surfaces with water only to avoid DEF contamination.

Check the area around the filter for cracks. If cracks are found the supply module must be replaced.

13. Start the engine and check for leaks.

IMPORTANT! It is important to avoid contamination of DEF when performing maintenance on the system as this may cause costly damage to SCR system components and affect the proper operation of the after treatment system and the engine.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) after treatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

630E-288

10. Install the new filter. Lubricate the o-rings on the filter with clean DEF solution for easy installation.

630E-289

11. Install the new equalizing element.

Note that the equalizing element must be replaced with each filter change.

12. Install the new filter cover, tighten to 20 N•m (15 lbf•ft). Use a 27 mm (1 1/16 in) wrench.

Note that the filter cover must be replaced with each filter change.

3.20

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

HYDRAULIC OIL RETURN FILTERS RETURN FILTER BY-PASS PRESSURE SWITCH

RETURN MANIFOLD

Return Oil Filters Bypassed. Slowly warm up machine or service if already warm.

IMPORTANT!

(3) HYDRAULIC RETURN FILTERS

724E-101

Contaminated hydraulic oil can lead to premature failure of hydraulic components and costly repairs.

Filters must be replaced at the recommended time intervals, Refer to scheduled maintenance in this section.

WATER ABSORBING (BLUE) ELEMENT

HYDRAULIC FILTER SERVICING GUIDELINES

REAR SERVICE COMPARTMENT

The return oil entering the hydraulic tank passes through three replaceable filters mounted on filter heads beside the tank and one mesh type reusable strainer on the end of the return tube in the reservoir. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. There is a bypass valve built into each filter head preset at 1.7 bar (25 psi), which will open in the event the elements become restricted. Before this valve is activated, a 1.4 bar (20 psi) filter restriction switch, located on the return manifold send a signal to the computer control system.

HYDRAULIC FILTER BYPASS (YELLOW)

When the filter restriction switch is activated and the hydraulic oil is at operating temperature the hydraulic oil filter restriction bypass icon will be illuminated in red and a a critical message will be shown on the computer screen.

Tigercat does not recommend the pre-filling of spin-on filters due to the risk of damage to the hydraulic system caused by unfiltered oil. Unfiltered oil used to pre-fill filters enters directly into the hydraulic circuit. Contaminants in unfiltered oil can cause significant and costly damage to hydraulic valves, pumps and motors.

The cleanliness of hydraulic oil cannot be guaranteed unless it is always pre-filtered before use.

Use of hydraulic oil filters other than the Tigercat brand is not recommended.

When the filter restriction switch is activated and the hydraulic oil temperature is low the hydraulic oil filter restriction bypass icon will be illuminated in yellow.

HYDRAULIC FILTER BYPASS (RED)

IMPORTANT! NEVER PRE-FILL HYDRAULIC FILTERS

Changing the filters: 1. Park machine on level ground, install articulation lock bar, lower attachment to ground, stop engine, engage parking brake and block wheels.

2. Wipe clean the area around the filter and head.

3. Place rags below to catch the spillage of oil.

4. Wearing face protection (in case of an oil squirt), unscrew the old filter. Dispose of old filter and any oil properly.

5. Check the seating area for the gasket on the filter head and wipe it clean.

3.21

Continued on the following page

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

6. The new Tigercat filter is supplied with two gaskets enclosed, examine the filter head closely to determine which gasket should be used and follow the instructions to ensure proper installation.

FILTER HEAD

GASKET FILTER ELEMENT

FILTR_SEALS 2

SQUARE SECTION GASKET INSTALLATION

 Square Section Gasket Remove used gasket and clean groove in head.

Apply clean oil to new gasket surfaces.

Install new gasket into groove in filter head.

Screw on new filter until gasket makes contact.

Tighten filter an additional 3/4 turn.

FILTER HEAD

GASKET FILTER ELEMENT FILTR_SEALS 2

O-RING GASKET INSTALLATION

 O-Ring Gasket Remove used gasket and clean gasket seat in head.

Apply clean oil to new gasket surfaces.

Install new gasket on inside lip of filter.

Screw on new filter until gasket makes contact.

Tighten filter until top edge makes metal to metal contact with filter head.

(Approximately 1–1/2 additional turns after gasket contact.)

7. Start the engine and check for leaks.

3.22

Tigercat 720G/724G/726G Feller Buncher HYDRAULIC OIL RETURN STRAINERS

Lubrication and Maintenance NOTE: Changing strainers and filters and replacing the hydraulic oil tends to aerate the oil.

For maximum pump life, the machine should sit for 1 hour after servicing to allow entrained air to escape from the oil prior to applying working pressures to the pumps.

The reusable strainer is located on the return tube. The strainer should be inspected whenever the hydraulic tank is drained. See SCHEDULED MAINTENANCE in THIS SECTION. Changing or cleaning the strainer: This should be performed in the event of a pump failure or hydraulic oil contamination.

1. Park machine on level ground with the attachment resting on the ground.

STRAINER ACCESS COVER

2. Stop engine.

3. Turn BATTERY DISCONNECT SWITCH to the OFF position.

4. Drain the hydraulic tank into a suitable container via a drain plug in the bottom of the tank.

HYDRAULIC RETURN STRAINER

5. Disconnect the return hose from the top access cover before removing cover.

6. Remove the top access cover and O-ring. The strainer and tube are attached to the cover.

7. Before removing the strainers, clean any debris from the bottom of the tank and wipe it clean.

8. Remove the hydraulic oil return strainer using the hex on the end of strainer. Carefully clean the strainer (it can be damaged by rough handling).

724E-005A

9. Check for a buildup of foreign materials where the strainer screws onto the pipe.

10. Reinstall the strainer using the hex on end.

11. Reinstall access cover with new O-ring.

12. Reattach the return hose.

13. Add hydraulic oil to tank using fill pump.

14. Bleed air from the main, attachment and fan pumps by loosening the case drain hose fittings at each pump connection.

15. Continue filling hydraulic tank using fill pump.

Tighten case drain hose fittings to pumps when oil is seen coming from the pump case drain ports. It is important that all air is evacuated from the pumps.

16. Fill hydraulic tank up to FULL mark on sight gauge using fill pump.

17. Recheck oil level and add hydraulic oil up to FULL mark using fill pump.

3.23

HYDRAULIC TANK 7243101 – 7244000

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

HYDROSTATIC DRIVE CHARGE PRESSURE FILTER

HYDRAULIC FILTER SERVICING GUIDELINES

724G-014

IMPORTANT! NEVER PRE-FILL HYDRAULIC FILTERS

Tigercat does not recommend the pre-filling of spin-on filters due to the risk of damage to the hydraulic system caused by unfiltered oil. Unfiltered oil used to pre-fill filters enters directly into the hydraulic circuit. Contaminants in unfiltered oil can cause significant and costly damage to hydraulic valves, pumps and motors.

The cleanliness of hydraulic oil cannot be guaranteed unless it is always pre-filtered before use.

CHARGE PRESSURE FILTER

REAR SERVICE COMPARTMENT The charge pressure filter is located in the rear service compartment and is on the output side of the hydrostatic drive charge pump. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.

CASE DRAIN STRAINER

Changing the filter:

CASE DRAIN STRAINER

1. Park machine on level ground, install articulation lock bar, lower attachment to ground, stop engine, engage parking brake, and block wheels.

2. Wipe the area around the filter and head clean.

3. Place rags below to catch the spillage of oil.

4. Remove the old filter. Always wear face protection to avoid oil spray. Dispose of old filter and any oil properly.

5. Check the seating area for the gasket on the filter head and wipe it clean.

6. The new filter has an attached gasket. Apply hydraulic oil to the gasket surface.

7. Screw on the new filter until the gasket makes contact with the seat in the filter head.

8. Hand tighten filter an additional 1/2 turn only.

9. Start the engine and check for leaks.

724E-117

UNDERSIDE OF REAR CHASSIS

A case drain strainer element is located in the bottom of the rear chassis under the engine and can be accessed by removing the bottom access cover under the chassis.

The strainer element requires no regular maintenance over the life of the machine.

ONLY IN THE EVENT OF A PUMP OR MOTOR CATASTROPHIC FAILURE SHOULD THIS ELEMENT BE SERVICED. IMPORTANT! The strainer element is NOT a filter element.

Always use the correct replacement element. Use of an incorrect (filter type) element will result in pump damage.

3.24

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

HYDRAULIC OIL HAND FILL PUMP

HAND PUMP QUICK CONNECTION

OIL LEVEL SIGHT GLASS

HAND FILL PUMP

HAND PUMP SUCTION TUBE

724G-003

HYDRAULIC OIL HAND FILL PUMP

The hydraulic oil Hand Fill Pump is used for adding oil to the hydraulic oil reservoir. The hand pump is located on the inside of the rear service compartment door. The oil is pumped directly into the reservoir through the return filters.

•

To add oil to the reservoir, lift the fill hose from storage holder and remove dust cap. Connect it to the quick connection on the hand pump.

•

Remove the suction tube from its storage position and remove cap.

•

Clean the tube, then insert it into the supply drum. Operate the pump to fill reservoir.

• The pump should always be operated at a medium speed with steady motion. Pump oil until FULL level is observed on the reservoir sight glass. Check oil level with cylinders fully retracted to obtain an accurate level reading.

•

Remove suction tube from supply drum, wipe it clean, install dust cap and place in stored position.

•

Disconnect supply hose, install dust cap on quick connection, and place hose end back in holder.

•

Wipe off any oil to prevent dust accumulation.

3.25

FILL HOSE QUICK CONNECTION

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

AIR CLEANER MAINTENANCE

AIR FILTER RESTRICTION INDICATOR

MECHANICAL AIR FILTER RESTRICTION INDICATOR

ELECTRICAL AIR FILTER RESTRICTION INDICATOR 724G-003

724E-098

A filter restriction switch is installed on the outlet side of the air cleaner, the switch is used to signal the MD3 computer when the filter is restricted.

SAFETY ELEMENT

Engine Air Intake Filter Restricted. Service Machine to correct.

PRIMARY ELEMENT 724E-116

AIR FILTER ELEMENTS

The air cleaner on this machine uses 2 filter elements, a primary element and a safety element.

It is accessible through the service compartment access door on the rear of the machine.

To ensure maximum engine protection, it is important that the elements be serviced correctly and at proper servicing intervals.

NOTE: Replace the safety element every third primary filter change.

An alert warning message appears on the MD3 display to indicate the engine air intake filter is restricted. Replace the primary air filter element if the alert message is displayed. Replace the secondary (safety) filter every third primary filter change to guarantee maximum performance and reliability.

A mechanical filter restriction indicator is also connected to the outlet side of the air filter.

Replace the primary air filter when the indicator shows RED. This indicator provides a continuous reading whether the engine is running or is shut down. After replacing the filter, reset the indicator by pressing the reset button.

NOTE: Replace the safety element every third primary filter change.

Refer to AIR CLEANER MAINTENANCE, OVER SERVICING and IMPROPER SERVICING in THIS SECTION

3.26

Tigercat 720G/724G/726G Feller Buncher ENGINE AIR PRECLEANER

Lubrication and Maintenance AIR CLEANER UNLOADER VALVE

ENGINE AIR PRECLEANER

UNLOADER VALVE

724E-074

724G-003

The engine air precleaner cleans engine air before it reaches the air cleaner filter elements. It removes contaminants such as dust, powder, insects, rain and snow. This precleaner is self powered and self cleaning requiring virtually no maintenance.

However, it should be checked periodically to make sure that foreign materials have not plugged the intake area or the exhaust port area.

NOTE: The precleaner compartment should be checked and cleaned out daily to ensure proper operation of the precleaner.

AS THE AIR SPINS, CENTRIFUGAL FORCE SEPARATES FOREIGN MATERIALS FROM THE CLEAN AIR

CONTAMINANTS ARE BLOWN OUT OF SPECIAL DISCHARGE PORTS BY HIGH VELOCITY, AIR POWERED ROTOR

This valve should be replaced every 1000 hours.

Remove the unloader valve from the tube of the air cleaner housing. Check and clean the valve.

A good valve is soft and flexible. If plugged, be sure to check the filter elements as they may need replacing as well. Reattach the valve to the tube.

When operating in high dust conditions, the unloader valve should be checked and squeezed every 2 hours to release dust buildup.

In addition refer to the LUBRICATION AND MAINTENANCE SCHEDULE in AIR CLEANER MAINTENANCE in SECTION 3 of THIS MANUAL.

CHECK SPINNER BLADES FOR WEAR. REPLACE IF WORN.

THE TURBO II PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN

This rubber valve on the tube of the air cleaner housing should be checked before every shift (8 hours). If this valve is missing, damaged or has turned hard, it will cause the air cleaner to become ineffective. The valve should suck closed at 1/3 throttle.

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER TURBO 2

TURBO II PRECLEANER OPERATION

NOTE: Periodically remove the precleaner assembly and check the spinner assembly for wear or dirt build-up on the blades. Clean the spinner assembly or replace it if the blades are worn.

3.27

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

The most common and damaging servicing problems are:

SAFETY ELEMENT

OVER SERVICING Filter elements increase in dust cleaning efficiency as dust builds up on the media. Looks can be deceiving. A filter that looks dirty may actually be more efficient than one that is clean. A filter with dust build up on the media reaches nearly 100% dust cleaning efficiency. Only when a filter is so clogged with dirt that air restriction goes beyond engine manufacturer's guidelines, should a filter be replaced.

NOTE: This does not apply to hydraulic oil or diesel engine oil filters.

PRIMARY ELEMENT

SERVICING Engine exposure to dust during servicing is a large reason for engine damage due to dust.

724E-116

AIR FILTER ELEMENTS

IMPORTANT STEPS TO FOLLOW WHEN CHANGING FILTER ELEMENTS

Abrasive dust can easily enter the intake system once the air cleaner cover and protective filter element are removed for replacement. The safety element does reduce this risk but it should also be replaced at every third primary element change.

1. Remove the cover/dust bowl off of air cleaner assembly .

2. Avoid dislodging dust from filter element(s) by gently pulling the element off the outlet tube.

INTAKE TUBING AND JOINTS

3. Always clean the sealing surface of the outlet tube before inserting a new filter element.

Check all air intake system components, rubber elbows, connector hoses, tubes and clamps for damage, hardening, wear, cracks, leaks, loose clamps or loose hanger bracket hardware and repair or replace immediately.

4. Always clean the inside of the outlet tube.

5. Check your old filter sealing surfaces. This will help you detect foreign material on the sealing surface that is causing leakage.

Replace all air intake rubber components such as elbows and connectors every 2000 hours. High temperatures in this area can cause the rubber to harden.

NOTE: Filter elements should never be cleaned and reused. Cleaning causes dust to bypass the filter and be deposited on the inner surface of the filter media. The dust is then drawn directly into the engine.

6. Inspect the new filter for damage.

7. Insert the new filter properly. Apply pressure to the outer rim of the filter, not the flexible centre.

8. Check connections and ducts for an airtight fit. Ensure that all clamps, bolts and connections are tight. Check rubber elbows, intake tubing and joints for hardening cracks, splits or wear points. Replace as needed.

Leaks in these locations send dust directly to the engine.

3.28

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

DIESEL OXIDATION CATALYST / SELECTIVE CATALYTIC REDUCTION AFTER TREATMENT SYSTEM (DENOX 2.2 SYSTEM - TIER 4 FINAL)

NOTICE

The engine on this machine is equipped with a combination Diesel Oxidation Catalyst (DOC) and high efficiency Selective Catalytic Reduction (SCR) after treatment system to limit the nitrogen oxide exhaust gas values (NOX) to meet Tier 4 Final emission standard requirements with low fuel consumption. This process is electronically controlled by the DENOX 2.2 system.

The Diesel Oxidation Catalyst (DOC) uses oxidation at high temperatures to convert carbon monoxide (CO), hydrocarbons (HC) and the soluble organic fraction (SOF) of diesel particulates into inert compounds, carbon dioxide (CO2) and water vapor (H2O). In addition the DOC converts nitrogen oxide (NO) into nitrogen dioxide (NO2).

Increased NO2 levels enhance the performance of the SCR catalyst at low temperatures and increase the effectiveness of the DOC/SCR after treatment system as a whole.

The high efficiency SCR process is based on a series of chemical reactions which involve the reaction of ammonia with the oxygen in the exhaust gas to reduce nitrogen oxides (NOx) in the exhaust gas by transforming it into inert compounds: free nitrogen (N2) and water vapor (H2O). In addition the high efficiency catalytic converter includes a clean up catalyst (CUC) which reduces any excess ammonia (NH3) which may result from the SCR process.

• DO NOT IDLE THIS ENGINE FOR MORE THAN 9 HOURS. • DAMAGE TO EMISSION CONTROL SYSTEM WILL RESULT.

63281BENG R0

IMPORTANT! Engine should not idle longer than 9 consecutive hours. Damage to the emission control system will result. When this machine idles for an extended period excess hydrocarbon buildup is created in the DOC/SCR after treatment system. Burn off of excess hydrocarbon at full load immediately after a long idle period will generate excess heat which will cause damage to emission control system components.

IMPORTANT! When cleaning the machine with pressurized water it is important to avoid getting water directly or indirectly into the exhaust tube. Water in the exhaust tube will damage sensors and SCR system components and affect the proper operation of the after treatment system and the engine.

3.29

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

The DOC/SCR after treatment system consists of the following components:

8. DOC Inlet Temperature Sensor

1. Inlet Humidity and Temperature Sensor

10. Dosing Module (DEF Injector)

9. Diesel Oxidation Catalyst (DOC)

2. Diesel Exhaust Fluid (DEF) Tank

11. Mixer Tube (DOC to SCR Pipe)

3. Heater Valve (not shown)

12. SCR Inlet Temperature Sensor

4. DENOX 2.2 Control System (incorporated into the engine control unit )

13. SCR with Clean Up Catalyst (CUC) 14. Outlet Temperature Sensor

5. Supply Module

15. NH3 Sensor

6. Exhaust Flap on Rear of Turbocharger

16. Outlet NOx Sensor

7. DOC Inlet NOx Sensor

1

10

View A

9

16

11

12 13

A

7

8

5

15

2

6

720G-004 720G-005

14

SCR AFTER TREATMENT SYSTEM COMPONENTS (720G SHOWN) 3.30

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

1

10

View A

9

16

11

12

A

13

7

8

5 15 2

6

724G-015 724G-016

14

SCR AFTER TREATMENT SYSTEM COMPONENTS (724G/726G SHOWN)

3.31

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher HC - HYDROCARBONS NOX - NITROGEN OXIDES CO - CARBON MONOXIDE NH3 - AMMONIA N2 - FREE NITROGEN H2O - WATER CO2 - CARBON DIOXIDE

HUMIDITY SENSOR AIR FILTER

SUPPLY MODULE

EXHAUST FLAP

ECU

HC

NOX SENSOR

NOX CO

DEF QUALITY SENSOR

ENGINE

NOX SENSOR

NH3 SENSOR

N2

DOC

TEMPERATURE SENSORS

HEATER VALVE (CIRCULATING ENGINE COOLANT)

MIXER TUBE CUC

H 2O

DEF LEVEL SENSOR

SCR NH3

CO2

DEF TANK

DOSING MODULE

CATALYTIC CONVERTER

630E-276

DOC/SCR AFTER TREATMENT SYSTEM

The DOC/SCR after treatment system is electronically managed by the DENOX 2.2 system incorporated into the engine control unit (ECU).

The ECU calculates and adjusts the flow rate of the DEF solution into the system based on current engine speed, torque delivered, exhaust temperature, amount of nitrogen oxides and ammonia present.

The exhaust gasses and ammonia at the proper reaction temperature, are introduced into the catalytic converter, where the second phase of the process takes place: by reacting with the oxygen in the exhaust gases the ammonia is converted into free nitrogen (N2) and water vapor (H2O).

The exhaust passes through the DOC which uses oxidation at high temperatures to convert carbon monoxide (CO), hydrocarbons (HC) and the soluble organic fraction (SOF) of diesel particulates into inert compounds, carbon dioxide (CO2) and water vapor (H2O). It also converts nitrogen oxide (NO) into nitrogen dioxide (NO2) which enhances the performance of the SCR catalyst.

Finally the high efficiency catalytic converter incorporates a clean up catalyst (CUC) which reduces any excess ammonia (NH3) which may result from the SCR process.

The supply module pump picks up the DEF solution from the tank and sends it under pressure to the dosing module (DEF injector) to be injected into the exhaust at the outlet of the DOC and pass through the mixer tube upstream of the catalytic converter.

The first phase of the SCR process takes place in the first part of the catalytic converter: high temperature exhaust gas evaporates the DEF solution instantly and, by hydrolysis, converts it into ammonia (2NH3) and carbon dioxide (CO2).

Evaporation of the solution lowers exhaust gas temperature, bringing it closer to the optimum temperature required by the process.

3.32

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

DIESEL EXHAUST FLUID (DEF) TANK

BLUE FILL CAP

724G-017

DEF QUALITY SENSOR

DEF TANK

COOLANT HEATER COIL LEVEL SENSOR 724G-017

DEF TANK

The DEF tank is located in the right rear corner of the machine. The DEF tank fill cap can be accessed through the rear compartment hinged access door. The DEF tank fill point is equipped with a filter to prevent contaminants from entering the tank. DO NOT remove this filter when filling the DEF tank.

DEF tank capacity is 43 L (11.4 US gal). DO NOT overfill tank. This tank is equipped with an expansion capacity of 7% required to allow for the expansion of DEF in cold temperature conditions.

DEF freezes at -11°C (12°F).

A DEF level indicator is shown on the main menu of the computer display, below the fuel gauge.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) after treatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

The DEF tank includes a fill location, a heater unit and a DEF quality sensor. The heater unit incorporates a heater coil, heating system inlet/ outlet connections, DEF inlet/outlet connections, a breather, level sensor, temperature sensor and electrical connector.

TEMPERATURE SENSOR

HEATER UNIT 620E-082 Diesel exhaust fluid (DEF) is used by the Selective Catalytic Reduction (SCR) after treatment system to lower the concentration of nitrogen oxides from the diesel engine exhaust of this vehicle. DEF is an aqueous urea solution with 32.5% high purity urea and 67.5% deionized water. Note that DEF may also be referred to as AUS32 or AdBlue® and should meet ISO 22241 specifications. Use only DEF meeting this standard.

It is important to avoid contamination of DEF when filling the tank as this may cause costly damage to SCR system components and affect the proper operation of the SCR system and the engine.

IMPORTANT! DEF should be stored between -11°C (12°F) and 30°C (86°F) and out of direct sunlight to maximize shelf life and to avoid DEF quality problems caused by improper storage.

When DEF levels are low or a problem with DEF quality is detected information messages and warnings will be shown on the computer display.

Note that extremely low DEF levels and/or DEF quality problems may result in derating of engine performance to meet emission standard requirements. Action to correct these problems should be taken immediately to avoid affecting engine performance and damage to SCR after treatment system components. Refer also to COMPUTER – MESSAGES AND WARNINGS in THIS SECTION. Refer to DRAINING DEF TANK in Section 3.

Refer to DEF TANK in Section 2.

3.33

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

DRAINING THE DIESEL EXHAUST FLUID TANK The DEF tank is located in the right-hand rear corner of the machine. Open the rear service compartment door for access.

TO DRAIN THE TANK: 41581AUNI R0

1. Use the DEF level indicator on the computer display to estimate the container capacity required to properly drain the DEF solution. Total tank capacity is 43 L (11.4 US gal).

DEF TANK (BLUE FILL CAP)

2. Remove the DEF tank drain acces panel.

3. Remove the DEF tank fill cap. The DEF quality sensor location can be used as a drain (remove the sensor carefully to avoid damage).

4. Drain the DEF solution into a suitable container.

5. Once the fluid has been drained, clean theinside of the tank with DEF fluid or distilled/demineralized water only if required.

Thoroughly drain the tank after cleaning

724G-007

REAR SERVICE COMPARTMENT

6. Replace the quality sensor and fill cap.

If any DEF fluid has spilled, rinse well with water.

NOTE: To avoid contamination and ensure clean fluid, do not re-use DEF. Re-fill tank with new DEF only.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) after treatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

DEF TANK ACCESS PANEL 724E-110

3.34

Tigercat 720G/724G/726G Feller Buncher HEATER VALVE / HEATED DEF SUPPLY LINES

Lubrication and Maintenance Heating is switched OFF when: • DEF tank temperature >16°C (61°F)

CONNECTOR

• Supply module temperature >10°C (50°F) • Ambient air temperature >-4°C (25°F) Heating is switched ON when: • DEF tank temperature < -15°C (-59°F)

COOLANT BYPASS

• Supply module temperature< -8°C (-46°F) • Ambient air temperature< -5°C (23°F)

COOLANT INLET 630E-265

When conditions require heating the system will thaw DEF within 30 minutes of engine start for proper operation of the after treatment system.

Note also that whenever the engine is stopped all DEF is pumped back to tank before the engine power system is turned off. This process takes approximately 90 seconds.

COOLANT OUTLET

HEATER VALVE

The heater valve is located inside the rear service compartment door above the pump drive gearbox.

DENOX 2.2 DOSING SYSTEM HEATER VALVE

724G-010

724G-008

The heater valve controls the flow of engine coolant through the DEF tank heater coil and the supply module when heating of the DEF fluid is required. The heater valve also controls the constant flow of engine coolant to the dosing module for cooling purposes. This machine is equipped with electrically heated DEF supply lines.

DEF freezes at -11°C (12°F).

Temperature sensors signals control the operation of both the electrically heated DEF supply lines and the heater valve which, depending on the temperature, opens or closes the flow of hot engine coolant to the heater coil in the DEF tank and supply module.

ENGINE ECU

DENOX 2.2 control system is incorporated into the engine control unit (ECU).

The DOC/SCR after treatment system is electronically managed by the DENOX 2.2 control system. The ECU calculates and adjusts the flow rate of the DEF solution into the system based on current engine speed, torque delivered, exhaust temperature, amount of nitrogen oxides and ammonia present and the humidity levels in incoming air.

3.35

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher DIESEL OXIDATION CATALYST (DOC)

SUPPLY MODULE

724G-007

DIESEL OXIDATION CATALYST (DOC)

SUPPLY MODULE/

DEF TANK

724G-007

DIESEL OXIDATION CATALYST (DOC) (724G/726G SHOWN 720G-001

DIESEL OXIDATION CATALYST (DOC)

REAR SERVICE COMPARTMENT

The supply module pump picks up the DEF solution from the tank and sends it under pressure to the dosing module, mounted on the DOC. DEF is injected into the exhaust at the outlet of the diesel oxidation catalyst and upstream of the catalytic converter.

EXHAUST FLAP

EXHAUST FLAP

DIESEL OXIDATION CATALYST (DOC) 720G The diesel oxidation catalyst (DOC) uses oxidation at high temperatures to convert carbon monoxide (CO), hydrocarbons (HC) and the soluble organic fraction (SOF) of diesel particulates into inert compounds, carbon dioxide (CO2) and water vapor (H2O).

In addition the DOC converts nitrogen oxide (NO) into nitrogen dioxide (NO2). Increased NO2 levels enhance the performance of the SCR catalyst at low temperatures and increase the effectiveness of the DOC/SCR after treatment system as a whole.

The DOC is located upstream of the catalytic converter (SCR & CUC) and at its outlet incorporates the mixer tube and the mounting for the dosing module.

724G-005

An exhaust flap is located at the exhaust outlet from the engine. The exhaust flap is used to regulate temperature of the exhaust entering the diesel oxidation catalyst (DOC) to optimum levels for proper operation of the after treatment system.

3.36

Tigercat 720G/724G/726G Feller Buncher DOSING MODULE (DEF INJECTOR)

Lubrication and Maintenance CATALYTIC CONVERTER 724G-006

724G-009

CATALYTIC CONVERTER

CATALYTIC CONVERTER (724G/726G SHOWN

DOSING MODULE (724G/726G SHOWN)

The dosing module is mounted on the DOC outlet upstream of the catalytic converter. The dosing module injects DEF fluid into the exhaust stream.

CATALYTIC CONVERTER

The dosing module is cooled by a constant flow of engine coolant supplied by the heater valve to maintain optimum temperature for the after treatment process.

MIXER TUBE 720G-002

CATALYTIC CONVERTER 720G

The catalytic converter is located above the pump compartment. Chemical reactions inside the catalytic converter reduce nitrogen oxides (NOx) in the exhaust gas.

The catalytic converter is equipped with soundproofing material and replaces the exhaust silencer. It incorporates both the selective catalytic reduction (SCR) and the cleanup catalyst (CUC) components of the after treatment system.

The first phase of the SCR process takes place between the DOC and the SCR. High temperature exhaust gas evaporates the DEF solution instantly and, by hydrolysis, converts it into ammonia (2NH3) and carbon dioxide (CO2).

630E-275

MIXER TUBE

The mixer tube is incorporated into the outlet of the DOC upstream from the catalytic converter.

The high-turbulence mixer tube is used to mix the DEF solution and exhaust gases together before they enter the catalytic converter.

Evaporation of the solution lowers exhaust gas temperature, bringing it closer to the optimum temperature required by the process.

The exhaust gases and ammonia at the proper reaction temperature, are introduced into the SCR, where the second phase of the process takes place. By reacting with the oxygen in the exhaust gasses the ammonia is converted into free nitrogen (N2) and water vapor (H2O).

Finally the high efficiency catalytic converter incorporates a clean up catalyst (CUC) which reduces any excess ammonia (NH3) which may result from the SCR process.

3.37

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

HUMIDITY AND TEMPERATURE SENSOR

NH3 SENSOR ELECTRONIC CONTROL UNIT

SENSOR

630E-264 620E-089

HUMIDITY & TEMPERATURE SENSOR

The humidity sensor is located on the air intake just past the air cleaner. This sensor monitors the temperature and humidity of intake air sending signals to the Denox 2.2 control system. This information is used to calculate the amount of DEF fluid to be injected into the system.

TEMPERATURE SENSORS TAG

NH3 SENSOR

The NH3 sensor is mounted at the outlet of the catalytic converter. The NH3 sensors detect and send information about the NH3 levels in the exhaust. This information is used to calculate the amount of DEF fluid to be injected into the system and to monitor DOC/SCR after treatment system operation.

Refer to APPROVED ANTI-SIEZE PASTES FOR EXHAUST / AFTER TREATMENT SENSORS (TIGERCAT FPT TIER 4F ENGINES) in SECTION 3 of THIS MANUAL. NOX SENSOR ELECTRONIC CONTROL UNIT

CERAMIC SENSOR

620E-087

TEMPERATURE SENSOR

Temperature sensors are mounted at the inlet of the diesel oxidation catalyst, the inlet of the catalytic converter and the outlet of the catalytic converter. These three sensors send exhaust temperature signals to the DENOX 2.2 control system. The control system uses this information to calculate the amount of DEF fluid to be injected into the system.

NOTE: All three temperature sensors are identical, however location should be noted for analysis purposes when replacing a temperature sensor.

620E-088

NOX SENSOR

The inlet NOx sensor is mounted upstream of the diesel oxidation catalyst. The outlet NOx sensor is mounted at the outlet of the catalytic converter.

The NOx sensors detect and send information about the dosing of DEF solution and the efficiency of the catalytic converter to the Denox 2.2 control system. This information is used to calculate the amount of DEF fluid to be injected into the system and to monitor DOC/SCR after treatment system operation.

Each NOx sensor consists of ceramic sensor and an electronic control unit linked by a cable. The sensor detects the concentration of nitrogen oxides in the exhaust.

3.38

Tigercat 720G/724G/726G Feller Buncher The sensor, cable and control unit are considered to be one part for service/replacement purposes.

Note that cable length cannot be changed as this will affect the proper operation of the sensor.

Lubrication and Maintenance APPROVED ANTI-SIEZE PASTES FOR EXHAUST/AFTER TREATMENT SENSORS (TIGERCAT FPT TIER 4F ENGINES) If replacement of these components is necessary in the field, NOx sensors and NH3 sensors are pre-coated at the factory with the required antiseize. The application of anti-seize should not be required.

In the event anti-seize must be re-applied, only the following approved products should be used: NOx sensors – Weicon® High Tech Anti-seize only NH3 sensor – Loctite® X203 Dry Film Moly AntiSeize IMPORTANT! When checking or replacing any sensor or plugs in the exhaust or the after treatment system, it is important to use only approved anti-seize as specified by Tigercat.

Use of non-approved compounds can affect the operation of the NOx and NH3 sensors and cause a malfunction of the after treatment system. This may result in poisoning of the SCR catalyst and require replacement of expensive after treatment system parts.

3.39

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

DIESEL EXHAUST FLUID (DEF) HANDLING

FILLING THE DEF TANK •

Diesel exhaust fluid (DEF) is an aqueous urea solution with 32.5% high purity urea and 67.5% deionized water. Note that DEF may also be referred to as AUS32 or AdBlue and should meet ISO 22241 specifications. Use only DEF meeting this standard.

Always clean the area around the fill cap and avoid introducing contaminants into the DEF tank when filling.

•

It is important to avoid contamination of DEF as this may cause costly damage to SCR system components and affect the proper operation of the SCR system and the engine.

Always use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. Use of any other fluid will contaminate the after treatment system and may pose a safety hazard.

USE OF PROPER STORAGE CONTAINERS

When a problem with DEF quality is detected information messages and warnings will be shown on the computer display. Note that DEF quality problems may result in derating of engine performance to meet emission standard requirements. Action to correct DEF quality problems should be taken immediately to avoid affecting engine performance and damage to SCR after treatment system components. Refer also to COMPUTER – MESSAGES AND WARNINGS in Section 2, or Section 6 of the Service Manual.

•

To prevent contaminants from affecting DEF quality it should be handled only in storage, transport and filling containers intended exclusively for that purpose.

•

Polyethylene or stainless steel containers are recommended. Refer also to DEF manufacturer's recommendations.

•

DEF is corrosive to metals other than stainless steel. Transport in metal containers other than stainless steel will result in contamination.

PROPER STORAGE CONDITIONS TO MAXIMIZE SHELF LIFE

For safety information refer to DIESEL EXHAUST FLUID (DEF) in Section 1.

•

DEF should be stored between -11°C (12°F) and 30°C (86°F) and out of direct sunlight to maximize shelf life and to avoid DEF quality problems caused by improper storage.

•

DEF quality problems can often be avoided with proper storage and handling practices to maximize shelf life.

•

DEF storage areas should always be out of direct sunlight and away from heat sources to avoid reducing shelf life.

•

DEF shelf life is limited. It should be consumed on a first in first out basis, within manufacturer's recommended shelf life limits.

DEF beyond manufacturer's recommended shelf life limits may not meet ISO 22241 specifications.

AVOID DEF QUALITY PROBLEMS WITH PROPER HANDLING PRACTICES Most DEF quality problems can be avoided entirely with a little care and proper handling of DEF fluid.

WARNING Use only diesel exhaust fluid (DEF) which meets ISO 22241 specifications. NEVER fill the DEF tank with any other fluid.

DEF fluid is injected into the exhaust gas stream during normal operation of the Selective Catalytic Reduction (SCR) after treatment system.

Use of other fluids may cause component damage, or a fire risk which could result in death or serious injury.

3.40

Tigercat 720G/724G/726G Feller Buncher REFUELING DIESEL FUEL

Lubrication and Maintenance FUEL TANK

Park machine on level ground, turn engine off and allow machine to cool.

FUEL LEVEL SENDER

FUEL CAP

DO NOT refuel while smoking or near an open flame or sparks.

FUEL TANK

Clear obstructions from steps and handles needed to access the fuel tank.

Attach a grounding strap to an unpainted metal surface on the machine if the refueling tank or nozzle is so equipped.

724E-110 724E-097

Located at the right rear of the machine, the fuel tank on models 720G/724G has a usable capacity of 303 L (80 US gal) while the 726G model has a capacity of 340.6 L (90 US gal). The fuel cap and fuel level sender are located under a hinged cover on the top of the tank. The fuel level sender sends a signal to the computer system which displays an on-screen fuel level gauge.

FUEL NOZZLE HOLDING BRACKET 726G-003

718E-037

Before climbing onto the machine to refuel, secure the fuel nozzle in the nozzle holding bracket.

DIPSTICK

Once safely on the machine open the cover on top of the fuel tank (if equipped) and clear any debris from around the fuel cap.

S≤15 mg/kg

Remove the fuel cap slowly to allow pressure to escape from the tank.

ULTRA LOW SULFUR FUEL ONLY 36686AUNI R0

Inspect the fuel cap gasket.

Inspect the fuel strainer located under the filler cap for debris or damage.

FUEL STRAINER

Fill the tank until the fuel level reaches the bottom of the fuel strainer. Do not leave the fuel nozzle unattended or spillage may occur.

When refueling is complete place the fuel nozzle back in the holding bracket.

FUEL TANK DIPSTICK/FUEL STRAINER

Install the fuel cap hand tight before closing the fuel cap cover.

A dipstick and a fuel strainer are located under the fuel cap. The dipstick slides through a hole in the side of the fuel strainer. DO NOT drop the dipstick into the filler tube or it could punch a hole in the bottom of the fuel strainer. The fuel strainer should be removed and cleaned every 125 hours (reach in and lift it out). Replace the fuel strainer if it is damaged.

Climb off the machine.

Remove the fuel nozzle and grounding strap (if applicable).

Before restarting the machine, check that no other personnel have moved into the hazardous area and sound the horn.

3.41

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

PRESSURIZED WATER SYSTEM MAINTENANCE

FILL & CHARGE PRESSURIZED WATER SYSTEM

OPERATION:

1. Open water shut off valve and completely discharge all water and compressed air from the tank via the hose end nozzle.

Turn the hand operated ball valve (shut off valve) under the seat to the ON position to draw water from the 39.7 L (10.5 US gal) pressurized holding tank at the rear of the machine. When not in use turn the water supply OFF at this valve and relieve the pressure in the rubber hose, under the operator's seat.

HOSE

CAUTION Never remove fill plug before de-pressurizing tank or injury may result. This fill plug incorporates a vent hole to release air pressure from the tank before the threads disengage. DO NOT replace this fill plug with any substitute.

WATER SHUT OFF VALVE (SHOWN CLOSED)

9

196-16A

PRESSURIZED WATER SYSTEM CONTROL VALVE (UNDER SEAT)

TANK FILL PLUG

The pressure gauge on the side of the seat should read 4 bar (60 psi).

AIR CHARGE VALVE

M726E-063

PRESSURIZED WATER TANK

2. Slowly unscrew fill plug two full turns. Any remaining air in the tank will be heard expelling from the special fill plug. Do not remove fill plug until all air has been expelled.

PRESSURE GAUGE

196-9A

3. Close water shut off valve.

4. Fill tank with water. Tank total capacity is approximately 39.7 L (10.5 US gal).

PRESSURIZED WATER SYSTEM

Refer also to FIRE PREVENTION in Section 1.

When temperatures below 0°C (32°F) are anticipated, use a 60/40 solution of Nontoxic R. V. Antifreeze or other suitable antifreeze.

Antifreeze solution must meet GM 6038M specifications.

SYSTEM TEST: This system should be tested once every month by turning the shut-off valve ON and expelling water from the hose end nozzle. A very forceful discharge of water should be obtained. If the water does not come out with force (with pressure gauge reading 4 bar [60 psi]) the system needs to be PURGED. Refer to PURGING PRESSURIZED WATER SYSTEM in THIS SECTION. After testing, the tank must be refilled and pressurized to 4.14 bar (60 psi). Refer to the following FILL AND CHARGE procedure. This FILL AND CHARGE procedure should be carried out yearly.

NOTE: Most Nontoxic RV antifreeze solutions contain corrosion and algae inhibitors, it is therefore suggested that this solution be added to the water on a continual basis regardless of temperature conditions.

5. Install fill plug in tank.

3.42

NOTE: This is a special plug designed to withstand pressurization of the water tank. Do not substitute.

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance PURGING PRESSURIZED WATER SYSTEM

6. Pressurize the system to 4 bar (60 psi) as indicated on pressure gauge by connecting an air hose to air charge valve beside the pressure gauge.

7. Open the water shut off valve

Purging should be carried out whenever the flow of water does not forcefully discharge from the end of the hose with the pressure gauge reading 4 bar (60 psi).

8. Discharge about 2 L (1/2 US gal) of fluid into an empty antifreeze jug or other suitable container.

1. Open water shut off valve and completely discharge all water and compressed air from the tank via the hose end nozzle.

There will be significant foaming as the fluid is discharged into the jug. Continue until a very forceful flow is obtained and any contamination that may have been in the tank is flushed from the system.

CAUTION Never remove fill plug before de-pressurizing tank or injury may result. This fill plug incorporates a vent hole to release air pressure from the tank before the threads disengage. DO NOT replace this fill plug with any substitute.

9. Check fluid in the jug for contamination. If fluid is dirty dispose of it properly.

10. Close the water shut-off valve.

11. Release pressure and fluid from the hose.

12. Pressurize the system to 4 bar (60 psi) as indicated on pressure gauge by connecting an air hose to air charge valve beside the pressure gauge.

13. Return the hose to its storage location.

2. Slowly unscrew fill plug two full turns. Any remaining air in the tank will be heard expelling from the special fill plug. Do not remove fill plug until all air has been expelled.

3. Close the water shut off valve and add 8 L (2 US gal) of clean water to the tank.

4. Install fill plug in tank.

NOTE: This is a special plug designed to withstand pressurization of the water tank. Do not substitute.

5.

Pressurize the system to 4 bar (60 psi) as indicated on pressure gauge by connecting an air hose to air charge valve beside the pressure gauge.

6. Open the shut off valve and completely discharge all the water in the tank via the hose end nozzle.

7. Discharge all the water into an empty antifreeze jug or other suitable container.

There will be significant foaming as the fluid is discharged into the jug. Continue until a very forceful flow is obtained and any contamination that may have been in the tank is flushed from the system.

8. If a forceful discharge was not achieved, repeat the purging procedure. If a second purging does not work, remove lines and check for an obstruction.

9. After the purging operation, fill and charge the system as described in FILL & CHARGE PRESSURIZED WATER SYSTEM in this section.

3.43

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

CHECKING THE AIR CONDITIONING SYSTEM

A/C COMPRESSOR

BELT TENSIONER

Any service work must be performed by authorized A/C technicians. The system should be charged with R134a refrigerant only. PAG (polyalkeylene glycol) oil should be present in the system and must be used on O-ring fittings during assembly.

A/C COMPRESSOR BELT

A/C SYSTEM TOTAL CAPACITIES R134a Refrigerant

PAG OIL

1.7 kg (3.75 lb)

59 mL (2 oz)

ALTERNATOR

The compressor and charge valves are accessed from the right side engine compartment. The condenser core and receiver drier are accessed on the left side of the machine.

Use this checklist to maintain system between service intervals.

1. Check compressor drive belt tension.

2. Check air intake filters and precleaner and clean as required.

3. Check the condenser core for dirt and debris.

Clean as required. Refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in Section 2.

SERPENTINE BELT

724E-088

CHECK DRIVE BELTS

IMPORTANT! It is recommended that during cold weather when the A/C system is not in use, that it be run for a period of 5 minutes every 2 weeks. This will circulate oil to all components of the A/C system.

CAUTION Use compressed air for cleaning only when the machine is cold to avoid the risk of fire caused by debris contacting hot surfaces.

If using compressed air for cleaning, use at 2 bar (30 psi) or less.

Always use personal protective equipment to guard against flying debris

A/C CONDENSER CORE

724G-062

RECEIVER DRYER (FAR SIDE)

724G-063

WATER PUMP PULLY

CAUTION Avoid the risk of fire caused by debris accumulating on surfaces that may become hot during machine operation. Always use care when cleaning to ensure that debris removed from one area of the machine does not accumulate on other areas of the machine.

CHECK A/C CONDENSER CORE

4. Check the evaporator core and the inside of the A/C housing for dirt and debris. Clean as required.

5. Run air conditioning system for 3–5 minutes.

6. Check to see that compressor clutch will engage.

3.44

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

CENTER JOINT

TRANSMISSION:

MAINTENANCE OF CENTER JOINT

By carefully following these procedures, the service life of the transmission will be extended and costly down time will be avoided.

Maintenance in this area is usually limited to: a) Regular lubrication of the two center joint grease fittings to purge the pivot bearings of debris and water. Refer to SERVICE AND LUBRICATION POINTS in this section for lubrication intervals. Use only high quality, lithium based EP2 grease containing molybdenum disulfide.

For additional information, refer to TRANSMISSION in SECTION 8 of the SERVICE MANUAL. CHECK OIL LEVEL Check oil level at end of every 8 hour shift.

Procedure: 1. Park on level ground, lower attachment to the ground, engage parking brake, and turn off engine.

b) Visually checking the center joint pivot for looseness every 1000 hours. With an observer on the ground, keeping well clear of the center joint area, perform the following test to check for looseness of center joint.

1. Have operator lift the attachment off the ground and then rapidly raise and lower the head several times to bounce machine.

2. Clean dirt and debris from around oil dipstick and check oil level.

3. If required, add the recommended grade of oil through the dipstick/fill tube.

Do not overfill.

2. As machine bounces, check for motion between the front and rear chassis frame lugs. Also check for a clunking sound at the center joint area.

TRANSMISSION OIL LEVEL DIPSTICK AND FILL TUBE

REAR CHASSIS FRONT CHASSIS

CHECK FOR MOVEMENT IN THIS JOINT AREA

724E-081

CHECK TRANSMISSION OIL LEVEL (720G/724G SHOWN)

726G-005

724D-D11

726G-004

COVER

1000 HOUR CHECK COVER

3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked.

Refer SECTION 11 of the Service Manual for more information..

DIPSTICK AND FILL TUBE

CLOSED (726G SHOWN)

OPEN (726G SHOWN)

Access to the transmission dipstick on the 726G is through an access cover located on the right hand side of the front roof support. The cover is held in place by a spring loaded bolt. To open the cover, insert your left forefinger in the hole and pull until the cover stops. With your right hand grasp the cover and rotate clockwise until access to the dipstick can be gained. The spring loaded bolt will hold the cover in place. Reverse the procedure to close the cover.

3.45

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

START-UP PROCEDURE AFTER MAJOR MACHINE MAINTENANCE This procedure should be followed: •

After major service or a rebuild.

•

Whenever the machine has been drained of hydraulic oil.

•

When any major component has been removed, repaired or replaced.

•

If the engine fuel supply has been disconnected or drained, refer to priming fuel system procedure in the engine manufacturer's maintenance manual.

NOTE: Changing strainers, filters and replacing the hydraulic oil tends to aerate the oil. For maximum pump life, the machine should sit for 1 hour after servicing to allow entrained air to escape from the oil prior to applying working pressures to the pumps.

• Proceed to MACHINE START-UP procedure.

PRE-STARTUP AND FILLING 1. Check oil levels in the engine, the pump drive gearbox and the transmission.

2. Check coolant level in the radiator.

3. Do a final inspection of all fittings and clamps to make sure they are tight and will not leak.

4. Install the articulation lock bar and engage parking brake.

5. Do not start engine. Purge air from hydraulic system as follows: •

Ensure all filters are in place.

REMOVE PLUG

DRIVE PUMP

720E-012

•

Remove the plug on the top case port of the drive pump. This port will assist in venting air as hydraulic oil is filling the system components. Reinstall the plug when hydraulic oil free of air begins to flow out the port.

•

Fill the hydraulic tank if it has been drained.

•

Fill all the pumps and motors with pre-filtered hydraulic oil through the highest case drain ports and close the ports.

NOTE: If the axles were drained of oil, refer to FILLING THE AXLES in this SECTION and in SECTION 8 of THE SERVICE MANUAL. 3.46

Tigercat 720G/724G/726G Feller Buncher MACHINE START-UP Before beginning this procedure, perform the PRE START-UP and filling steps.

NOTE: When the saw head is attached, re-torque all teeth (See saw manual). Attach the SAW BLADE GUARD and insert the SAW BLADE LOCKING PIN.

Lubrication and Maintenance 5. Crank engine for 5 seconds, then wait for 5 seconds. Check charge pressure gauge during cranking to observe for pressure reading. Repeat 5 times to pump oil into pumps and system components.

NOTE: If charge pressure gauge dose not indicate a rise in pressure, check for possible cause (air in system, leaks, loose hose fittings, pumps not turning, etc.). Repair problem.

Repeat step 5 until a rise in charge pressure is noticed.

1. Ensure the articulation lock bar is installed.

6. Reconnect ECU chassis multi-pin connector.

ENGINE ECU

7. Turn key switch to RUN position and observe computer display. WAIT for the screen to display the gauges before starting the engine.

CHASSIS MULTI-PIN CONNECTOR 724G-010

DISCONNECT ECU HARNESS

2. Disconnect the engine ECU chassis multi-pin connector (prevents engine starting).

INSTALL A 0–70 BAR (0– 1000 PSI) GAUGE AT (M3) PORT.

724G-035

DRIVE PUMP

724E-047

DRIVE PUMP (M3) TEST PORT CONNECTION

3. Install a 0–70 bar (0–1000 psi) gauge on drive pump to check charge pressure at (M3) port.

Watch gauge closely.

8. Start engine. If charge pressure does not rise within 20 to 30 seconds, TURN ENGINE OFF. If charge pressure is between 18–31 bar (260–450 psi), run engine at IDLE for 20 minutes. Check engine oil pressure in cab. See COMPUTER, ENGINE MENU in SECTION 2 of the OPERATOR'S MANUAL Do not operate any functions.

9. With engine at IDLE, parking brake ON, hold foot brake down, bleed brakes in rear axle.

CAUTION Machine operator must ONLY take directions from the person doing the set-up.

4. Close cab doors, turn ignition key switch to the ON position and depress the interlock reset switch. This will allow pilot oil to circulate and refill the pilot and case drain circuits during the following cranking procedure.

3.47

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

IMPORTANT!

Without a felling head attached, the tilt function can cause damage to the arms.

Watch the two LINK ARMS very carefully, as they may drop down beside the boom arms and wedge, causing the crank arms to bend.

When necessary, lower the boom DOWN, watching closely and tilt FORWARD, again watching the link arms closely.

CRANK ARM

HYDRAULIC OIL RESERVOIR

SIGHT GAUGE, HYDRAULIC OIL LEVEL

LINK ARM

SENDING UNIT, HYDRAULIC OIL TEMPERATURE

724E-115

HYDRAULIC OIL RESERVOIR

14. With cylinders fully retracted, check hydraulic oil level.

BOOM ARM

718E-028

CRANK, LINK AND BOOM ARMS

10. Set throttle to IDLE and run each BOOM function for 2 minutes at LOW pressure to purge air from circuit.

NOTE: If the machine was on wheels, the steer and drive functions were not properly purged or flushed. Remove the articulation lock bar and at LOW IDLE, slowly operate the steer function right and left a few times. With the parking brake released and at LOW IDLE, slowly operate the drive function forward and reverse a few times.

11. Set throttle to FULL and run each function again for 2 minutes to flush circuit.

15. If required, top up the hydraulic oil reservoir with clean oil using the oil fill pump. For operating instructions see SECTION 3 of THIS MANUAL. 16. Remove gauge from (G) test port on drive pump. Clean up any spilled oil.

NOTE: If possible, allow the machine to stand for 4 to 6 hours before setting any of the operating pressures. This will allow any air bubbles in the oil to escape and is a good time to check for leaks.

17. Recheck hydraulic oil level and top up if required.

18. Refer to appropriate section of the service manual to check and set operating pressures.

12. Set throttle to LOW idle and turn engine off.

724E-105

COOLANT LEVEL SIGHT GLASS

13. Top up the radiator with clean coolant.

3.48

Tigercat 720G/724G/726G Feller Buncher REPLACING THE ENGINE SERPENTINE BELT

Lubrication and Maintenance PARKING BRAKE

1. Park the machine on level ground. Engage the parking brake, lower the attachment to the ground and turn the engine off. Turn battery disconnect switch OFF.

PARKING BRAKE ASSEMBLY

A/C COMPRESSOR

BELT TENSIONER

A/C COMPRESSOR DRIVE BELT ALTERNATOR SERPENTINE BELT

724E-088

STATIONARY DISCS

SPRINGS

WATER PUMP PULLY

ROTATING DISCS

DRIVE SHAFT

CHECK DRIVE BELTS

2. Remove the A/C compressor drive belt.

3. Install a Johnson bar with a 3/8" square drive in the square socket hole of the belt tensioner.

4. Loosen belt tensioner and remove the serpentine belt.

5. Replace the serpentine belt. Ensure that all of the ribs on the serpentine belt align with the grooves on the engine pulleys.

724E-007 724E-008 724E-112

PARKING BRAKE

The parking brake assembly is installed in the drive line between the transmission and the front axle. Five rotating discs are splined to the brake shaft and 6 stationary discs are held in place in the brake housing. The brake is spring-applied, hydraulically-released.

PARKING BRAKE SWITCH

M726E-044

CONTROL PANEL

A parking brake switch on the instrument panel activates and deactivates the brake, also the brake will be activated when the cab door is open or if the engine is not running. See also INSTRUMENT PANEL for more details regarding parking brake switch operation.

3.49

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

MIDDLE AND REAR DRIVE SHAFT SPLINE LUBRICATION When operating in extremely wet or dusty conditions or when the regular service schedule has been neglected, insufficient lubrication to the spline area of the middle drive shaft will result in premature wear. In addition old grease often forms into a semi-solid, rubber-like plug preventing the purging of contaminants (water, dirt, sand, etc.) through the slip spline seal.

1

The most common cause of joint and slip spline failure is lack of proper lubrication.

726M-012

REAR SLIP SPLINE

726E-002

REAR SLIP SPLINE LUBRICATION 4. Apply grease to grease nipple (1) until new, clean grease appears at the relief hole at yoke end of slip spline (Figure C).

5. Plug or cover relief hole and continue to apply pressure to grease nipple until new, clean grease appears at slip spline seal.

2

6. If grease does not appear at slip spline seal and continues to exit from the covered relief hole, remove the drive shaft and inspect for hardened grease build up, rust or other contaminants within the drive shaft. Repair or Replace drive shaft.

1

726M-008

MIDDLE SLIP SPLINE

MIDDLE SLIP SPLINE LUBRICATION 1. Park machine on level ground, and steer fully to the right. Lower attachment to the ground.

Set parking brake ON.

GREASE GUN

2. Stop the engine.

3. Apply grease to grease nipple (1) until new, clean grease exits from the relief fitting (2).

2

1 726M-011

Check to see if grease is exiting from the relief fitting (2). If grease does not exit from the relief fitting, remove the relief fitting and apply grease at the grease nipple. If grease flows out of relief fitting hole replace relief fitting.

If grease does not exit from the relief fitting hole, remove drive shaft and inspect for "hardened" grease build up, rust or other contaminants within the drive shaft. Repair or Replace drive shaft.

3.50

GREASE APPEARS AT RELIEF HOLE 720C-01

FIG. C – REAR DRIVE SHAFT YOKE END

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

Torque 6C (3/8”–24 UNF) drive shaft yoke fasteners to 50 N•m (37 lbf•ft) – lubricated.

NOTE: Yoke bolts on axles are metric threads. All other drive shaft bolts are imperial threads.

FRONT DRIVE SHAFT

REAR DRIVE SHAFT

MIDDLE DRIVE SHAFT

724E-112 726M-008 726E-001 726E-002

TYPICAL DRIVE SHAFT INSTALLATION 3.51

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

SPEED CONTROL LEVER ADJUSTMENT SPEED CONTROL LEVER

PROTECTIVE RUBBER BOOT

ADJUSTABLE FRICTION SET SCREW CONTROL PANEL M726E-045

SPEED CONTROL LEVER

The friction setting on the speed control lever is variable and can be adjusted to allow proper operation.

The friction setting on the speed control lever may require adjustment, during normal operation, to maintain the set position of the lever, especially at maximum throw.

FRICTION SETTING PROCEDURE

630B-31

Before starting work, read and follow all servicing safety precautions in SECTION 1 of this manual.

1. Park machine on level ground, engage parking brake, lower attachment to ground, turn engine off.

2. Position the speed control lever in the neutral position (pointing straight up).

3. Raise the protective rubber boot from the speed control valve body.

4. Locate the adjustable friction set screw.

5. Tighten the adjustable friction set screw as required (2.5 mm hex key).

6. Replace the protective rubber boot over the speed control valve body.

3.52

SPEED CONTROL LEVER FRICTION SET SCREW LOCATION

Tigercat 720G/724G/726G Feller Buncher FAN CONTROL

Lubrication and Maintenance The temperature sensor in the hydraulic tank operates in a similar manner to the engine coolant temperature sensor but independently and with a different temperature range. This temperature range depends on the type of hydraulic oil used.

ELECTRONIC CONTROLLER

This sensor will signal the electronic control module to turn the fan ON at the minimum set point temperature. As the temperature of the hydraulic oil increases, the speed of the fan will also increase to a maximum 2500 rpm fan speed @2200 rpm engine speed, at this point the temperature of the hydraulic oil will be at the maximum set point or higher.

COOLING SET POINTS 724E-099

Charge Air Min 60°C (140°F) Charge Air Max 82°C (180°F) Engine Coolant Min 84°C (183°F) Engine Coolant Max 95°C (203°F) Hydraulic Oil Temp values depend on type of oil used.

ELECTRONIC CONTROLLER

This control consists of an electronic processing module, a three position FAN switch in the operator's cab with CLEAN/AUTO/FULL ON* positions for fan control.

When the switch is in the AUTO position and the fan is stopped due to low engine coolant, air intake or hydraulic oil temperatures, turning ON the A/C will immediately turn the cooling fan to run at 1200 rpm. This is to ensure that sufficient air flow is available for the cab A/C even while the machine is still warming up.

FAN SWITCH

CAUTION M726E-044

Before placing the fan switch in the CLEAN (PURGE) position make sure that there are no personnel on the left side of the machine in the area where the fan will expel debris

CONTROL PANEL FULL ON

When the switch is in the FULL ON (OVERRIDE) position, the fan will run at FULL speed for cooling regardless of coolant, air intake or oil temperatures. The AUTO CLEAN/REVERSE feature will not function in the FULL ON position.

AUTO CLEAN 724G-011

When the engine coolant temperature reaches 84°C (183°F) the sensor on the engine in conjunction with the electronic control module will send a signal to the control valve to start to turn the fan slowly. The fan speed is variable from zero up to a maximum of 2500 rpm fan speed @2200 rpm engine speed. As the temperature of the coolant increases so does the speed of the fan up to the maximum 2500 rpm fan speed @2200 rpm engine speed. At this point, the engine coolant temperature will be 95°C (203°F) or higher.

When the switch is pressed momentarily to the CLEAN (PURGE) position, the control module will signal the control valve to reverse the flow of oil to the motor and turn the fan in reverse. The control module will also turn the air conditioning system OFF for as long as the fan switch is in the CLEAN (PURGE) position.

See COMPUTER, GENERAL SETTING to make adjustments to FAN PURGE INTERVALS and FAN PURGE LENGTH in SECTION 2 of the operator's manual.

3.53

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

TORQUE CHART THREAD DIAMETER

LOCATION Cylinders Pin bolts Piston nut, steer cyl.

Piston nut, boom/tilt cyl.

Gland, steer cyl.

Keeper plate bolts

TORQUE (LUBRICATED) lbf-ft Nm

3/4" UNC 1 1/4" UNF 1 1/2" UNF 3/4" UNC

282-310 930 1640 450 282-310

393-420 1282 2260 620 389-420

1/2" UNC 3/4" UNC

80-88 282-310

109-119 393-420

Engine mounting Bolts, mount to chassis Bolts, brackets to engine Bolts, bracket to pump drive

7/8" UNC M12-1.75 (10.9) 5/8" UNC

364 75 159-175

500 100 216-237

Pump drive gearbox Drive plate to flywheel Bell housing to engine

M10 x 1.5 (10.9) M10 x 1.5 (10.9)

37 42

50 57

1 1/4" x 18 UNEF 3/4" UNC

475-525 357

644-711 484

1/2" UNF 1/2" UNF 3/8" UNF

120-132 120-132 37-49

163-179 163-179 50-66

Axle mounting bolts Front Rear

7/8" UNC 3/4" UNC

364 226

500 310

Wheel bolts

7/8" UNF

500-550

679-745

Transmission housing to frame

7/8" UNC

364

500

Center joint bearing Bearing retaining bolts Pin retaining bolts

Drive shafts Yoke retaining nut, front shaft Pillow block retaining bolts Universal joint bolts Rear & Mid. drive shaft Front drive shaft to Mid. drive shaft Front drive shaft to axle

Torque values pertaining to the engine and attachment are provided in the appropriate manuals.

724E TORQUECHART.PDF

3.54

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

GENERAL TORQUE SPECIFICATIONS

The torque values listed below are for general use only.

DO NOT use these values if a different torque value or tightening procedure is shown for a specific application.

IMPERIAL

GRADE 5 BOLTS

GRADE 8 BOLTS

IMPERIAL BOLT TORQUE SPECIFICATIONS GRADE 5 BOLTS GRADE 8 BOLTS LUBRICATED lbf-ft Nm 8 - 10 11 - 13 20 - 28 27 - 38 33 - 36 45 - 49 52 - 57 71 - 77 80 - 88 109 - 119 115 - 127 156 - 172 159 - 175 216 - 237 282 - 310 393 - 420 455 - 501 617 - 679 682 - 750 925 - 1016 966 - 1062 1310 - 1441 1360 - 1496 1844 - 2027 LUBRICATED lbf-ft Nm 10 - 13 14 - 17 18 - 25 25 - 33 37 - 41 50 - 55 58 - 64 79 - 86 90 - 99 122 - 134 128 - 141 174 - 191 180 - 198 244 - 268 315 - 347 427 - 470 501 - 550 679 - 745 746 - 821 1012 - 1113 1083 - 1191 1469 - 1613 1509 - 1660 2046 - 2250 4.8

METRIC

DRY LUBRICATED COARSE THREAD lbf-ft Nm lbf-ft Nm 1/4" - 20 7- 8 10 - 11 8 - 10 11 - 13 5/16" - 18 14 - 18 19 - 24 10 - 15 13 - 20 3/8" - 16 31 - 34 42 - 46 23 - 25 31 - 34 7/16" - 14 49 - 54 66 - 73 37 - 41 50 - 55 1/2" - 13 75 - 83 102 - 112 57 - 63 77 - 85 9/16" - 12 109 - 120 148 - 162 82 - 90 111 - 122 5/8" - 11 150 - 165 204 - 223 113 - 124 152 - 168 3/4" - 10 266 - 293 360 - 397 200 - 220 271 - 298 7/8" - 9 394 - 433 535 - 586 296 - 326 402 - 441 1" - 8 591 - 649 802 - 879 443 - 489 601 - 663 1 1/8" - 7 794 - 873 1077 - 1183 596 - 656 808 - 889 1 1/4" - 7 1120 - 1232 1519 - 1670 840 - 924 1139 - 1252 FINE DRY LUBRICATED lbf-ft Nm lbf-ft Nm THREAD 1/4" - 28 9 - 10 12 - 13 9 - 10 12 - 13 5/16" - 24 17 - 22 23 - 29 16 - 20 21 - 27 3/8" - 24 35 - 39 48 - 53 26 - 29 35 - 39 7/16" - 20 55 - 61 75 - 83 41 - 45 56 - 61 1/2" - 20 85 - 94 116 - 127 64 - 70 87 - 95 9/16" - 18 121 - 133 164 - 180 91 - 100 124 - 135 5/8" - 18 170 - 187 231 - 253 128 - 141 174 - 191 3/4" - 16 297 - 327 403 - 443 223 - 245 303 - 332 7/8" - 14 434 - 477 589 - 646 326 - 359 442 - 486 1" - 12 646 - 711 876 - 965 484 - 534 657 - 724 1 1/8" - 12 891 - 980 1208 - 1328 668 - 735 906 - 996 1 1/4" - 12 1240 - 1364 1682 - 1849 931 - 1024 1262 - 1387

8.8

9.8

10.9

4.8

8.8

9.8

10.9

12.9

4.8

8.8

9.8

10.9

12.9

10

5 5

SIZE

CLASS 4.8 DRY LUBRICATED Nm lbf-ft Nm lbf-ft

10

10

5

12.9

10

12.9

12

10

12

METRIC BOLT TORQUE SPECIFICATIONS

CLASS 8.8 OR 9.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

12.9

12

DRY lbf-ft Nm 11 - 12 15 - 16 26 - 30 35 - 40 44 -48 60 - 65 70 - 77 95 - 104 106 - 117 144 - 158 153 - 168 208 - 228 212 - 233 288 - 316 376 - 414 510 - 561 606 - 667 822 - 904 909 - 1000 1233 - 1355 1288 - 1417 1746 - 1921 1817 - 1999 2464 - 2710 DRY lbf-ft Nm 13 - 14 18 - 19 23 - 28 31 - 38 49 - 54 67 - 73 78 - 86 106 - 116 120 - 132 163 - 179 171 - 188 232 - 255 240 - 264 326 - 358 420 - 462 570 - 626 668 - 735 906 - 996 995 - 1096 1359 - 1486 1445 - 1590 1960 - 2155 2012 - 2213 2728 - 2997

10

COARSE THREAD 1/4" - 20 5/16" - 18 3/8" - 16 7/16" - 14 1/2" - 13 9/16" - 12 5/8" - 11 3/4" - 10 7/8" - 9 1" - 8 1 1/8" - 7 1 1/4" - 7 FINE THREAD 1/4" - 28 5/16" - 24 3/8" - 24 7/16" - 20 1/2" - 20 9/16" - 18 5/8" - 18 3/4" - 16 7/8" - 14 1" - 14 1 1/8" - 12 1 1/4" - 12

CLASS 10.9 DRY LUBRICATED Nm lbf-ft Nm lbf-ft

CLASS 12.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

M6 M8 M10

4.8 12.0 23.0

3.5 8.5 17.0

6.0 15.0 29.0

4.5 11.0 21.0

9.0 22.0 43.0

6.5 16.0 32.0

11.0 28.0 55.0

8.5 20.0 40.0

13.0 32.0 63.0

9.5 24.0 47.0

17.0 40.0 80.0

12.0 30.0 60.0

15.0 37.0 75.0

11.5 28.0 55.0

19.0 47.0 95.0

14.5 35.0 70.0

M12 M14 M16

40.0 63.0 100.0

29.0 47.0 73.0

50.0 80.0 125.0

37.0 60.0 92.0

75.0 120.0 190.0

55.0 88.0 140.0

95.0 150.0 240.0

70.0 110.0 175.0

110.0 175.0 275.0

80.0 130.0 200.0

140.0 225.0 350.0

105.0 165.0 225.0

130.0 205.0 320.0

95.0 150.0 240.0

165.0 260.0 400.0

120.0 190.0 300.0

M18 M20 M22

135.0 190.0 260.0

100.0 140.0 190.0

175.0 240.0 330.0

125.0 180.0 250.0

260.0 375.0 510.0

195.0 275.0 375.0

330.0 475.0 650.0

250.0 350.0 475.0

375.0 530.0 725.0

275.0 400.0 540.0

475.0 675.0 925.0

350.0 500.0 675.0

440.0 625.0 850.0

325.0 560.0 460.0 800.0 625.0 1,075.0

410.0 580.0 800.0

M24 M27 M30

330.0 490.0 675.0

250.0 360.0 490.0

425.0 625.0 850.0

310.0 650.0 450.0 950.0 625.0 1,300.0

M33 900.0 M36 1,150.0

475.0 825.0 600.0 925.0 675.0 1,150.0 850.0 1,075.0 800.0 1,350.0 1,000.0 700.0 1,200.0 875.0 1,350.0 1,000.0 1,700.0 1,250.0 1,600.0 1,150.0 2,000.0 1,500.0 950.0 1,650.0 1,200.0 1,850.0 1,350.0 2,300.0 1,700.0 2,150.0 1,600.0 2,700.0 2,000.0

675.0 1,150.0 850.0 1,750.0 1,300.0 2,200.0 1,650.0 2,500.0 1,850.0 3,150.0 2,350.0 2,900.0 2,150.0 3,700.0 2,750.0 850.0 1,450.0 1,075.0 2,250.0 1,650.0 2,850.0 2,100.0 3,200.0 2,350.0 4,050.0 3,000.0 3,750.0 2,750.0 4,750.0 3,500.0

TORQUECHARTGENERAL.XLS

3.55

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

PRESSURE SETTINGS – 720G/724G

With hydraulic oil at operating temperature 49°C – 60°C (120°F – 140°F) Location

Pressure

Engine RPM

Engine RPM

BAR

PSI

2200 ± 25 High Idle 900 ± 25 Low Idle

Pilot Manifold Pressure Relief Valve Pressure Reducing Valve

46.5 38

675 550

1000 1000

29.3

425

1800

331 331 365.4 365.4

4800 4800 5300 5300

2200 2200

255

3700

2200

Drive Pump - Single Motor Two Speed Charge Pressure Relief Valve Multi Function Valve: · P.O.R. Forward · P.O.R. Reverse · High Pressure Relief Forward Non-Adjustable · High Pressure Relief Reverse Non-Adjustable Drive Motor - Single Motor Two Speed Drive Motor P.O.R. Drive Pump - Dual Motor One Speed Charge Pressure Relief Valve Multi Function Valve: · P.O.R. Forward · P.O.R. Reverse · High Pressure Relief Forward Non-Adjustable · High Pressure Relief Reverse Non-Adjustable

29.3

425

1800

348.2 348.2 348.2 348.2

5050 5050 5500 5500

2200 2200

Drive Motor - Dual Motor One Speed Drive Motor P.O.R. Loop flushing Pressure Relief Non-Adjustable

279.2 24.8

4050 360

2200

Steer Valve (Joystick Steering Only Steer Valve Main Relief Steer Right Port Relief Steer Left Port Relief

172.4 221 221

2500 3200 3200

2200 1000 1000

Saw Saw Valve Main Relief Saw Motor P.O.R. Saw Pump P.O.R. Standby Pressure

303 214 248 16-19

4400 @ 1100 rpm 3100 @ 2200 rpm 3600 @ 2200 rpm 225-275 @ 2200 rpm

Boom Valve Mid Inlet Main Relief or Main Relief Tilt In Port Relief Tilt Out Port Relief Accumulator Clamp Open Port Relief Accumulator Clamp Close Port Relief Clamp Open Port Relief Clamp Close Port Relief Boom Lift Port Relief Boom Lower Port Relief

179.3 200 200 221 221 76 221 200 152

2600 2900 2900 3200 3200 1100 3200 2900 2200

2200 1000 1000 1000 1000 1000 1000 1000 1000

IMPORTANT NOTES: Boom support must be used part# 4128A. When performing tilt out function, without a felling head installed, do not allow crank arms to hit boom.

720G 724G PRESSURE SETTINGS.XLS R1

3.56

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

Parker

Assembly Torque

The 4-bolt Split Flange consists of 4 main components: •

A body (flange head)

•

An O-ring

•

One captive or two split flange clamps

•

Four bolts and washer

WASHERS BOLTS FLANGE CLAMP

The 4-bolt port is simply a circular opening (flow passage) surrounded by four tapped holes in a certain pattern for acceptance of the flange clamping bolts. The flat surface of the port compresses the O-ring contained in the groove in the flange head when the clamp bolts are torqued.

In some instances, the groove is in the port and not in the flange head. The bolts, through the clamp halves, clamp down the flange head on to the flat surface of the port compressing and trapping the O-ring in the groove and leaving no gap for it to extrude under pressure. The hydraulic pressure is thus sealed by the compressed O-ring as long as the bolts are tightened enough to maintain solid metal to metal contact between the flange head at the outside diameter of the O-ring and the top of the port.

Flange Port Assembly

FLANGE HEAD

The steps to properly assemble the flange port clamping bolts are: 1. Make sure sealing surfaces are free of burrs, nicks, scratches or any foreign particles.

2. Lubricate the O-ring.

3. Position flange and clamp halves.

4. Place lock washers on bolts and insert through clamp halves.

5. Hand tighten bolts.

6. Torque bolts in diagonal sequence (see Fig. T9) in small increments to the appropriate torque level listed in Table T6 or Table T7 on this page.

O-RING TAPPED HOLES

FLANGE.JPG

Fig. T8 – 4 Bolt Split Flange Components

Dash Size

Flange Size

Inch Bolt (J518)

Torque lbf-ft

Metric Bolt (ISO 6162)

Torque N-m

8 12 16 20 24 32 40 48 56 64 80

1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5

5/16-18 3/8-16 3/8-16 7/16-14 1/2-13 1/2-13 1/2-13 5/8-11 5/8-11 5/8-11 5/8-11

17 +/- 2 25 +/- 3.5 31 +/- 4.5 41 +/- 5 52 +/- 6 60 +/- 6 85 +/- 9 144 +/- 15 125 +/- 8 125 +/- 8 125 +/- 8

M8 M10 M10 M12 M12 M12 M12 M16 M16 M16 M16

25 49 49 85 85 135 95 220 220 220 220

* Does not meet ISO 6162 specification.

Table T6 – Code 61 Flange Recommended Bolt Torque

FLANGE2.JPG

Fig. T9 – Flange Bolt Tightening Sequence Dash Size

Flange Size

Inch Bolt (J518)

Torque lbf-ft

Metric Bolt (ISO 6162)

Torque N-m

8 12 16 20 24 32

1/2 3/4 1 1 1/4 1 1/2 2

5/16-18 3/8-16 7/16-14 1/2-13 5/8-11 3/4-10

17 +/- 2 30 +/- 4.5 46 +/- 4.5 69 +/- 6 125 +/- 8 208 +/- 20

M8 M10 M12 M14 M16 M20

25 49 85 135 210 425

* Does not meet ISO 6162 specification.

Table T7 – Code 62 Flange Recommended Bolt Torque

3.57

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

Parker

Assembly Torque

JIC 37 Degree Flare SAE Dash Size

Thread Size

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

NPTF

Tube Connection Swivel or Hose Connection FFWR FFWR

5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12 3-12

NA NA 2 2 1 1/2 1 1/2 1 1/2 1 1/4 1 1 1 1 1 1

SAE Dash Size

NA NA 2 2 1 1/4 1 1 1 1 1 1 1 1 1

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass

1/8-27 NA 1/4-18 NA 3/8-18 1/2-14 7/8-14 3/4-14 NA 1-11 1/2 1 1/4-11 1/2 1 1/2-11 1/2 2-11 1/2 NA

Thread Size

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

NA NA 1/4 TO 1/2 NA 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 NA 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 NA NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

BSPT

Tube Connection Swivel or Hose Connection FFWR FFWR

NA NA 9/16-18 NA 11/16-16 13/16-16 1-14 1 3/16-12 NA 1 7/16-12 1 11/16-12 2-12 NA NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass

O'ring Face Seal / Seal-Lok SAE Dash Size

Tube Connection Swivel or Hose Connection TFFT TFFT

Thread Size

SAE Dash Size

NA NA 1/2 TO 3/4 NA 1/2 TO 3/4 1/2 TO 3/4 1/2 TO 3/4 1/3 TO 1/2 NA 1/3 TO 1/2 1/3 TO 1/2 1/3 TO 1/2 NA NA

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass

Thread Size

Tube Connection Swivel or Hose Connection TFFT TFFT

1/8-28 NA 1/4-19 NA 3/8-19 1/2-14 NA 3/4-14 NA 1-11 1 1/4-11 1 1/2-11 2-11 NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass

SAE J1926 Straight Thread Port Assembly Torques ASSEMBLY TORQUE = 10 % -0 SAE DASH SIZE

2 3 4 5 6 8 10 12 14 16 20 24 32

THREAD SIZE

5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12

SEAL-LOK lbf•ft (lbf•in) (310) (310) (310) (360) (420) 60 100 135 175 200 250 305 375

N •m 20 20 20 40 46 80 135 185 235 270 340 415 510

TRIPLE-LOK FERULOK PIPE FITTINGS lbf•ft N •m (lbf•in) (85) 10 (155) 18 (260) 29 (280) 32 (350) 40 (620) 70 85 115 135 183 175 237 200 271 250 339 305 414 375 509

PLUGS

ADJUSTABLE

NON-ADJUSTABLE

SEAL-LOK lbf•ft (lbf•in) (310) (310) (310) (360) (420) 60 100 135 175 200 250 305 375

3.58

N •m 20 20 20 40 46 80 135 185 235 270 340 415 510

TRIPLE-LOK FERULOK PIPE FITTINGS lbf•ft N •m (lbf•in) (60) 7 (100) 11 (180) 20 (250) 28 (350) 40 (620) 70 85 115 135 183 175 237 200 271 250 339 305 414 375 509

HOLLOW HEX HP5ON-S lbf•ft (lbf•in) (30) (55) (120) (170) (410) 60 100 135 175 200 250 305 375

N •m 3.5 6 13.5 19 46 80 135 185 235 270 340 415 510

HEX HEAD P5ON-S lbf•ft (lbf•in) (85) (155) (260) (280) (350) (620) 85 135 175 200 250 305 375

N •m 10 18 29 32 40 70 115 183 237 271 339 414 509

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

EATON Aeroquip

Assembly Torque

Recommended Parallel Connection Assembly torque

Eaton recommends that a Torque wrench be used to assure proper fitting assembly of these connections.

Straight Thread O-Ring Boss Low Pressure with 37º (SAEJ514)

Straight Thread O-Ring Boss High Pressure with ORS (J1453)

Thread Size (inches) 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12

Dash Size -03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24 -32

The values listed are for steel connections. Contact Teaton for torque values for other materials.

Jam Nut or Jam Nut or Straight Straight Fitting Torque Fitting Torque lb.-ft.

Newton Meters 8-9 12-13 13-15 18-20 14-15 19-21 23-24 32-33 40-43 55-57 43-48 59-64 68-75 93-101 83-90 113-122 112-123 152-166 146-161 198-218 154-170 209-230 218-240 296-325

Dash Size -03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24

ORS

Dash Size -04 -06 -08 -10 -12 -16 -20 -24

Thread Size (inches) 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12

Jam Nut or Jam Nut or Straight Straight Fitting Torque Fitting Torque lb.-ft.

Newton Meters 8-10 11-16 14-16 20-22 18-20 24-27 24-26 33-35 50-60 68-78 72-80 98-110 125-135 170-183 160-180 215-245 200-220 270-300 210-280 285-380 270-360 370-490

SAE 37º (JIC) Thread Size (inches) 9/16-18 11/16-20 13/16-16 1-14 1 3/16-12 1 7/16-12 1 11/16-12 2-12

Swivel Nut Torque lb.-ft.

10-12 18-20 32-35 46-50 65-70 92-100 125-140 150-165

Swivel Nut Torque Newton Meters 14-16 24-27 43-47 62-68 88-95 125-136 170-190 204-224

Dash Size -04 -05 -06 -08 -10 -12 -16 -20 -24 -32

Metric Thread Size mm M10x1 M12x1.5 M14x1.5 M16x1.5 M18x1.5 M20x1.5 M22x1.5 M26x1.5 M27x2 M33x2 M42x2 M48x2

Thread Size (inches) 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12

Swivel Nut Torque lb.-ft.

11-12 15-16 18-20 38-42 57-62 79-87 108-113 127-133 158-167 245-258

Swivel Nut Torque Newton Meters 15-16 20-22 24-28 52-58 77-85 108-119 148-154 173-182 216-227 334-352

BSPP Straight Adapter or Locknut Torque lb.-ft.

Newton Meters 13-15 18-20 15-19 20-25 19-23 25-30 33-40 45-55 37-44 50-60 52-66 70-90 55-70 75-95 81-96 110-130 96-111 130-150 162-184 220-250 170-192 230-260 258-347 350-470

Nominal Thread Size Straight Adapter or Locknut Torque inches** lb.-ft.

Newton Meters G1/8-28 13-15 18-20 G1/4-19 19-23 25-30 G3/8-19 33-40 45-55 G1/2-14 55-70 75-95 G3/4-14 103-118 140-160 G1-11 162-184 220-250 G1 1/4-11 170-192 230-260 G1 1/2-11 258-347 350-470 ** "G" denotes parallel threads, other than ISO 6149 (Port connection only)

Eaton Aeroquip Fluid Conveyance Products A-HOOV-MC001-E January 2005

3.59

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

Weights of Commercial Wood

Species

kg/m³

lb/ft³

Species

kg/m³

lb/ft³

Alder, Red Ash, White Aspen, Quaking Bald Cypress Basswood, American Beech, American Birch, Paper Birch, Yellow Cedar, Alaska Cedar, Incense Cedar, Northern White Cedar, Port-Orford Cedar, Western Red Cherry, Black Cottonwood, Eastern Douglas Fir, Coast Douglas Fir, Inland North Elm, American Fir, Alpine Fir, Balsam Fir, Nobel Fir, Red Fir, Silver Fir, White Gum, Black Gum, Blue Gum, Red Gum, Tupelo Hemlock, Eastern Hemlock, Western Hickory, Pecan Hickory, True Larch, Western Locust, Black Magnolia, Cucumber

737 769 689 817 673 865 801 929 577 721 449 897 433 721 785 881 577 865 449 721 481 769 577 753 721 1121 801 897 801 657 993 1009 769 929 785

46 48 43 51 42 54 50 58 36 45 28 56 27 45 49 55 36 54 28 45 30 48 36 47 45 70 50 56 50 41 62 63 48 58 49

Maple, Big Leaf Maple, Black Maple, Red Maple, Silver Maple, Sugar Oak, Black Oak, Chestnut Oak, Red Oak, Red, Swamp Oak, Swamp Chestnut Oak, White Oak, White, Swamp Pine, Jack Pine, Loblolly Pine, Lodgepole Pine, Long Leaf Pine, Norway, Red Pine, Short Leaf Pine, Slash Pine, Sugar Pine, Western Yellow Pine, White-Western Pine, White-Eastern Poplar, Yellow Redwood Spruce, Black Spruce, Engleman Spruce, Red Spruce, Sitka Spruce, White Sweetgum Sycamore, American Tamarack Walnut, Black Willow, Black

753 865 801 721 897 1009 977 1009 1073 1041 993 1105 801 993 625 993 673 993 993 817 721 561 577 609 801 513 625 545 529 545 801 833 753 929 801

47 54 50 45 56 63 61 63 67 65 62 69 50 62 39 62 42 62 62 51 45 35 36 38 50 32 39 34 33 34 50 52 47 58 50

NOTE: The values shown here are green weights.

3.60

Tigercat 720G/724G/726G Feller Buncher

Lubrication and Maintenance

Tigercat wire color code chart applicable to all products manufactured by Tigercat Industries Inc. COLOUR FUNCTION EXAMPLE Red Power..........................................(fused and unfused) Black Ground White Engine control.............................(fuel shut-off, start aid) Blue Propulsion Control......................(transmission/reverser solenoids) Purple Monitor, electrical and

mechanical systems....................(air cleaner, alternator, wheel speed, engine speed) Tan Electrical and

electromechanical control...........(park brake, alternator excitation)

(power door motor, backup alarm) Yellow Monitors......................................(flow, pressure, temperature, level) Grey Standard monitor system............(logic module to monitor) Brown Lights Green Electro-hydraulic control.............(pilot solenoids) Orange Accessories.................................(horn, A/C, heater)

COMMON CONVERSIONS To Convert Bar cc °C kg kW Liters mm N•m N

Into PSI Cu. in. °F lb HP Gallons Inches lbf•ft. lb

To Convert

Multiply By

Into

Multiply By

Cu. in. cc 16.39 °F °C (°F – 32) /1.8 Gallons Liters 3.785 hp kW 0.7457 Inches mm 25.4 lb kg 0.4535 lbf•ft N•m 1.356 psi bar 0.06896 In. of HG psi 0. 4912 In. of H2O psi 0. 03613 lb N 4.4482

14.5 0.06102 (°C x 9/5) + 32 2.205 1.341 0.2642 0.03937 0.7375 0.22481

3.61

Lubrication and Maintenance

Tigercat 720G/724G/726G Feller Buncher

3.62