Tigercat 718E FELLER BUNCHER SERVICE MANUAL SN 7180901 TO 7182000 - PDF DOWNLOAD

718E FELLER BUNCHER

SERVICE MANUAL SERIAL NUMBER 7180901 TO 7182000

ISSUE 3.0, JULY, 2015

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

Tigercat 718E Feller Buncher TABLE OF CONTENTS

SECTION INTRODUCTION.....................................................................................................................................v NON-APPROVED FIELD PRODUCT CHANGES................................................................................. vii SAFETY...................................................................................................................................................1 LUBRICATION AND MAINTENANCE.....................................................................................................3 PILOT SYSTEM......................................................................................................................................5 ELECTRICAL, GAUGES AND ALARMS.................................................................................................6 ENGINE...................................................................................................................................................7 DRIVE.....................................................................................................................................................8 BRAKES AND DIFFERENTIAL LOCKS..................................................................................................9 COOLING SYSTEM..............................................................................................................................10 STEERING AND CENTRE JOINT.........................................................................................................11 LIFT BOOM...........................................................................................................................................12 TILT.......................................................................................................................................................13 SAW DRIVE..........................................................................................................................................17 CLAMPS WITH SAW............................................................................................................................18 SHEAR WITH CLAMPS........................................................................................................................19

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.

718E Available Literature Operator's Manual.................................................................................................... Part No. 30850A Service Manual (this manual)................................................................................... Part No. 30851A Parts Catalog............................................................................................................ Part No. 30852A

iii

INTRODUCTION.....................................................................................................................................v

Tigercat 718E Feller Buncher 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 718E Feller Buncher.

Serial numbers: 718E 7180901 TO 7182000 The 718E 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 718E 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, 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.

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.

v

Introduction

Tigercat 718E 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.

vi

NON-APPROVED FIELD PRODUCT CHANGES................................................................................. vii

Tigercat 718E 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.

vii

Introduction

Tigercat 718E Feller Buncher

viii

Tigercat 718E Feller Buncher SECTION 1 - SAFETY

SAFETY.........................................................................................................................................................1

ISSUE 3.2, JULY, 2010

Read and understand this safety section prior to operating any equipment.

Read and understand all manuals for any attachments or accessories.

CONTENTS - SECTION 1 ACCESS PANELS....................................................................................................................... 1.16 BACKOVER ACCIDENTS............................................................................................................. 1.8 BATTERY SAFETY....................................................................................................................... 1.8 BOOM LIFT LOCK...................................................................................................................... 1.15 FELLING TREES......................................................................................................................... 1.10 FIRE PREVENTION.................................................................................................................... 1.22 DRY CHEMICAL CLEANUP PROCEDURES.......................................................................... 1.26 FIRE PREVENTION GUIDELINES.......................................................................................... 1.22 WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED.................................................. 1.25 WHAT TO DO TO PREPARE FOR A MACHINE FIRE............................................................ 1.23 WHAT TO DO WHEN A MACHINE FIRE OCCURS................................................................ 1.24 FLUID INJECTION INJURY........................................................................................................ 1.17 GREASE INJECTION INJURY.................................................................................................... 1.18 LIGHTNING SAFETY AWARENESS LIGHTNING SAFETY.................................................................................................... 1.20, 1.21 WHAT IS A LIGHTNING STRIKE?........................................................................................... 1.19 PARKING THE MACHINE........................................................................................................... 1.11 SAFETY HAZARDS - OPERATING.............................................................................................. 1.7 SAFETY HAZARDS - VITON SEALS............................................................................................ 1.6 SAFETY INTERLOCK SWITCHES ON CAB DOORS................................................................ 1.12 SAFETY LABELS.............................................................................................................. 1.27, 1.28 SAFETY PRECAUTIONS, GENERAL.......................................................................................... 1.3 SAFETY PRECAUTIONS, OPERATING....................................................................................... 1.9 SAFETY PRECAUTIONS, SERVICING............................................................................ 1.13, 1.19 SAFETY SYMBOLS...................................................................................................................... 1.3 SIGNAL WORDS........................................................................................................................... 1.3 WORKING WITH OIL.................................................................................................................... 1.5

Safety

Tigercat 718E Feller Buncher

1.2

Tigercat 718E Feller Buncher

Safety

SAFETY SYMBOLS

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

Follow all instructions from safety inspector and supervisors.

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

Do not let an untrained person operate the machine.

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 orange safety vest, gloves, safety boots, safety hat, goggles, and ear protection when necessary. These safety rules highlight both general and specific measures 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.

1.3

Safety

Tigercat 718E Feller Buncher Use the handrails and steps provided when mounting and dismounting from the machine.

KEEP BACK 500 FEET

Do not climb onto or jump off the machine at any time.

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

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

Do not use the joystick(s) or steering wheel as a handle to assist entering or leaving the cab.

Do not use the machine foot controls as a step.

When mounting or dismounting the machine always use the 3 point technique - Use 1 hand with 2 feet or 2 hands with 1 foot.

DANGER ROTATING SAW

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

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.

1.4

Tigercat 718E Feller Buncher

Safety

GENERAL SAFETY PRECAUTIONS continued Avoid mounting or dismounting the machine in areas with slippery surfaces. If this is not possible clean up or cover slippery surfaces with a nonslip material.

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.

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.

Some advice which should be observed: • • •

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

•

Machine should be washed completely before and after every major service.

Inspect the machine daily for signs of damage or unusual wear, to ROPS, FOPS, OPS 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.

• •

Check windows for scratching, crazing and cloudiness that could impair clear visibility all round 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.

1.5

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).

Safety

Tigercat 718E Feller Buncher

GENERAL SAFETY PRECAUTIONS continued Safety Hazards - Viton Seals O-rings and other seals manufactured of Viton material produce a highly corrosive acid when subjected to temperatures above. 600°f (315°c).

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

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.

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

1.6

Tigercat 718E Feller Buncher

Safety

GENERAL SAFETY PRECAUTIONS continued

WARNING 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.

Safety Hazards - Operating 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.

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.

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.

Approach with extreme caution any area where 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.

Maintain a distance of 10 feet. (3 meters) between the machine or boom and any power line carrying up to 50,000 volts or less plus 1/2 inch (10 mm) for each additional 1,000 volts above the 50,000 volt level.

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.

If the machine must be transported, make sure that it is adequately secured to the transporting vehicle.

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.

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

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

1.7

Safety

Tigercat 718E Feller Buncher

GENERAL SAFETY PRECAUTIONS continued

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

WARNING

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

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.

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

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

To avoid backover accidents: •

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

•

Disconnect battery before working on electrical systems as follows: -

turn off master switch in cab

-

disconnect negative starter motor cable from both battery posts

-

disconnect positive master solenoid cable from both battery posts

• •

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 sulphuric 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.

1.8

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 signaling.

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 718E Feller Buncher

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

OPERATING SAFETY PRECAUTIONS

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

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

Shut off engine when refuelling - DO NOT refuel the engine while smoking or near open flame or sparks.

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

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

Sound the machine horn before starting the machine.

The operator’s seat is equipped with either a lap belt or lap and shoulder harness belts. Use either of these restraint systems at all times when operating the machine.

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

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

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

Start the engine according to the instructions in this manual. Refer to OPERATING MACHINE in SECTION 2 of the OPERATOR'S MANUAL. Before moving the machine to the work site, check to ensure that all doors, panels, and access covers are installed properly and secured.

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

Secure loose items in the cab.

1.9

Safety

Tigercat 718E Feller Buncher

OPERATING SAFETY PRECAUTIONS continued

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.

NEVER travel across a STEEP slope or side hill:

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

•

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.

Boom supports encroach on cab door opening when machine is steered.

•

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

•

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

•

Serious injury or death could result from crushing.

•

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.

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.

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

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

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

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

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

Never travel near coworkers or other pieces of equipment with saw blade turning.

Always replace saw tooth retaining bolts when replacing saw teeth.

Do not allow people or other pieces of equipment near the felling operation.

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

Use only prearranged and approved signalling practices.

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

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

Shut down machine immediately if vibration occurs during cutting.

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

Check that the saw discharge area is clear and undamaged.

When travelling position felling head and boom accordingly so as not to impair vision.

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

1.10

Tigercat 718E Feller Buncher

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

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

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

Do not over load felling head.

•

Park on level ground.

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

•

Do not park on a hillside or incline.

•

Lower felling attachment onto level ground.

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

•

Engage the parking brake.

•

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

When parking the machine:

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

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

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

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

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

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

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

Use caution when loosening hydraulic connections.

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.

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

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. 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.

24863A

•

Park machine at least 50 feet (15 meters) 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.

OFF

ON 24863A R0

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

NOTE: Wait for 30 seconds after turning key switch off before turning the battery disconnect switch off. The engine ECM requires time after the engine is turned off to record the engine data and log the information for the current operating session. If the battery disconnect is turned off too soon, the data will not be recorded and an error message will be displayed when the battery power is turned back on and the key switch is turned on.

1.11

Safety

Tigercat 718E Feller Buncher

OPERATING SAFETY PRECAUTIONS continued

ACTUATOR

When travelling 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.

197-5

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.

SWITCH

INTERLOCK SWITCH (L.H. 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 (pilot system is shut off).

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

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

IMPORTANT 24 VOLT ELECTRICAL SYSTEM

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

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

To operate: Close both doors and press the PILOT RESET switch.

CAUTION 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.

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

1.12

Tigercat 718E Feller Buncher

Safety This machine is equipped with sensitive electronic control equipment, prior to welding:

SERVICING SAFETY PRECAUTIONS

NOTE: Wait for 30 seconds after turning key switch off before turning the battery disconnect switch off. The engine ECM requires time after the engine is turned off to record the engine data and log the information for the current operating session. If the battery disconnect is turned off too soon, the data will not be recorded and an error message will be displayed when the battery power is turned back on and the key switch is turned on.

Conduct maintenance inspections at least as frequently as recommended in SECTION 3 of the OPERATOR'S MANUAL. When servicing or repairing equipment, shut the engine down, and disconnect the positive (+) battery cable from both batteries.

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

OFF

24863A

ON 24863A R0

Turn Battery Disconnect Switch to the OFF position and disconnect the positive (+) battery cable from both batteries.

724E-020

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

DISCONNECT THE TWO MULTI-PIN PLUGS FROM THE ENGINE CPU

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

WARNING

Disconnect the engine CPU (Central Processing Unit) and engine wiring harness by unplugging the multi-pin connectors.

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

This machine is equipped with a reversible cooling fan to facilitate cleaning of the charge air cooler, radiator and oil cooler assembly. 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.

DISCONNECT MULTI PIN CONNECTORS

Prior to welding on any part of the machine, it should be cleaned and a fire extinguisher should be made available at the welding location. Care must be taken in attaching the welding machine grounding clamp so electrical current does not pass through bearings, especially the centre joint bearing.

724E-025

DISCONNECT PLUS 1 CONNECTORS

Disconnect the Plus 1 Controller by unplugging the 2 multi-pin connectors.

1.13

Safety

Tigercat 718E Feller Buncher Shut off engine. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

SERVICING SAFETY PRECAUTIONS continued WARNING Diesel fuel or hydraulic fluid 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.

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

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

Never use 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.

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.

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.

Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower the felling head 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 the procedure on how to RELIEVE PRESSURE, refer to PARKING THE MACHINE in THIS SECTION.

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.

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

1.14

Tigercat 718E Feller Buncher

Safety

SERVICING SAFETY PRECAUTIONS continued

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

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

WARNING Always allow the saw blade to come to a COMPLETE STOP before approaching saw head to make adjustments.

WARNING

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

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head • Do not use to set hydraulics pressures

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

REAR CHASSIS

CAUTION

RETAINING PIN

LYNCH PIN

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.

LOCK BAR

WARNING 726D-039

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

LOCK BAR IN LOCKED POSITION

To prevent accidental articulation of the machine and injury when working in the centre 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.

1.15

Safety

Tigercat 718E Feller Buncher HINGED DOOR

SERVICING SAFETY PRECAUTIONS continued WARNING

LOWER PANEL

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!

•

718E-106

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)!

KNOB

ACCESS PANELS - RIGHT SIDE HINGED DOOR

KNOB

718E-107

CAUTION The access panels are NOT HINGED or permanently attached to the machine, the UPPER doors when closed hold the LOWER panels in place. Once an UPPER DOOR is opened remove the LOWER panel from the machine. DO NOT apply any weight or pressure to the LOWER panel. DO NOT use these LOWER panels as hand grips, when servicing the machine.

Compartment door and panel knobs should be hand tight only at all times for easy access to the engine compartment and the pressurized water system in the event of a fire or other emergency.

Refer also to FIRE PREVENTION in THIS SECTION. 1.16

LOWER PANEL

ACCESS PANELS - LEFT SIDE

Tigercat 718E Feller Buncher

Safety

SERVICING SAFETY PRECAUTIONS continued

WARNING Diesel fuel or hydraulic fluid 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.

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.

In the event of any suspected fluid injection injury • 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 • 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.

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.

Diesel fuel or hydraulic fluid 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.

•

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.

When performing any service work • 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.

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

Safety

Tigercat 718E Feller Buncher

SERVICING SAFETY PRECAUTIONS continued 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.

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.

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

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.

1.18

Tigercat 718E Feller Buncher

Safety 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.

WHAT IS A LIGHTNING STRIKE? 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.

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

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.

•

Monitor daily weather forecasts

•

Observe local weather conditions

•

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.

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.

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.

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.

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.

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

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.

1.19

Safety

Tigercat 718E Feller Buncher WHAT TO DO IF YOU ARE OUTSIDE AND SEE LIGHTNING OR HEAR THUNDER.

LIGHTNING SAFETY AWARENESS continued

If you can, get inside.

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

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

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.

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.

•

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:

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.

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.

1.20

•

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.

Tigercat 718E Feller Buncher

Safety

LIGHTNING SAFETY AWARENESS continued

What to do if you feel your skin tingling, your hair stands on end, light metal objects vibrate or you hear a crackling sound.

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

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

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

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.

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

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.

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.

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

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

6. Avoid entering any small enclosures or shelters.

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.

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

2. Call your local emergency response telephone number immediately.

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

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.

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

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.

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

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

11. Do not use the telephone except for emergencies.

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

1.21

Safety

Tigercat 718E Feller Buncher 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.

FIRE PREVENTION

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.

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, OIL COOLER AND RADIATOR 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 smoulder. If dislodged this smouldering debris can fall into other areas of the machine and thereby spread a fire.

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

7. Steam clean the engine, hydraulic pumps, transmission, brake, fuel and hydraulic tank compartments and all machine belly pans 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 50 feet 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.

1.22

Tigercat 718E Feller Buncher

Safety 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.

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

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

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

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.

•

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 of the OPERATOR’S MANUAL.

•

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.

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

1.23

Safety

Tigercat 718E Feller Buncher WHAT TO DO WHEN A MACHINE FIRE OCCURS

FIRE PREVENTION continued •

•

•

• •

•

•

•

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 fire extinguisher access holes in the doors of the machine.

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

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

2. Shut the engine off.

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.

4. 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.

5. 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.

6. 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 or hot machine components in the area.

The water will cool the area, reducing the chances of re-ignition.

suppression system** on your machine.

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

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.

1.24

Tigercat 718E Feller Buncher

Safety WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED

FIRE PREVENTION continued •

•

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

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

•

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.

•

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.

•

•

Before returning the machine to work.

2. Ensure that the fire detection system*

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

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.

*

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.

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

**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.

1.25

Safety

Tigercat 718E Feller Buncher

DRY CHEMICAL CLEANUP PROCEDURES

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.

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.

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 noncorrosive and nonconductive such as CRC Contact Cleaner 2000.

1.26

Tigercat 718E Feller Buncher

Safety FIRE PREVENTION!

SAFETY LABELS SAFETY LABELS CAB LABEL

OPERATOR'S MANUAL LOCATION 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.

This label advises operator's 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!

1.27

Safety

Tigercat 718E Feller Buncher FIRE EXTINGUISHER ACCESS HOLE

SAFETY LABELS CHECK DAILY

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

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.

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

1.28

Tigercat 718E Feller Buncher SECTION 3 - LUBRICATION AND MAINTENANCE

LUBRICATION AND MAINTENANCE........................................................................................................... 3

CONTENTS - SECTION 3

ISSUE 3.2, JULY, 2010

SCHEDULED MAINTENANCE 8 HOURS................................................................................................................................... 3.8 GENERAL.......................................................................................................................... 3.6, 3.7 SCHEDULED MAINTENANCE 125 HOURS............................................................................................................................... 3.9 SCHEDULED MAINTENANCE 250 HOURS............................................................................................................................... 3.9 SCHEDULED MAINTENANCE 500 HOURS............................................................................................................................... 3.9 SCHEDULED MAINTENANCE FREQUENTLY........................................................................................................................... 3.8 SCHEDULED MAINTENANCE 1000 HOURS........................................................................................................................... 3.10 SCHEDULED MAINTENANCE 2000 HOURS........................................................................................................................... 3.11 SCHEDULED MAINTENANCE SEASONAL.............................................................................................................................. 3.11 AIR CLEANER MAINTENANCE................................................................................................. 3.22 AIR CONDITIONING SYSTEM CHECKING............................................................................... 3.26 BELT, ENGINE SERPENTINE, REPLACING.............................................................................. 3.25 BLINK CODES............................................................................................................................ 3.34 CENTER JOINT.......................................................................................................................... 3.27 DRIVE SHAFT SPLINE LUBRICATION, MIDDLE AND REAR................................................... 3.28 FILTERS ENGINE AIR CLEANER.......................................................................................................... 3.22 FUEL FILTER/WATER SEPARATOR....................................................................................... 3.18 FUEL TANK STRAINER.......................................................................................................... 3.19 HYDRAULIC OIL RETURN FILTERS...................................................................................... 3.20 HYDROSTATIC CHARGE PUMP PRESSURE FILTERS....................................................... 3.21 SERVICING GUIDELINES FOR OIL FILTERS........................................................................ 3.21 FIRE PREVENTION...................................................................................................................... 3.7 HYDRAULIC OILS............................................................................................................ 3.12, 3.13 NEW MACHINE MAINTENANCE FIRST 125 HOUR INSPECTION AND SERVICE REPORT...................................................... 3.3 INITIAL PRE-DELIVERY INSPECTION..................................................................................... 3.3 TIGHTENING POINTS.............................................................................................................. 3.3 OIL LOST FROM LEAKAGE......................................................................................................... 3.3 OIL SAMPLE COLLECTION PROCEDURES............................................................................... 3.5 OIL SAMPLING PROGRAM.......................................................................................................... 3.4 PRESSURE SETTINGS - SAW.................................................................................................. 3.40 PRESSURE SETTINGS - SHEAR.............................................................................................. 3.41 PRESSURIZED WATER SYSTEM MAINTENANCE.................................................................. 3.24 PRIMING THE FUEL SYSTEM................................................................................................... 3.18 PUMP DRIVE GEARBOX OIL LEVEL......................................................................................... 3.31

Lubrication and Maintenance

Tigercat 718E Feller Buncher

SERVICE AND LUBRICATION POINTS CHART........................................................................ 3.14 SPEED CONTROL LEVER ADJUSTMENT................................................................................ 3.36 STARTUP PROCEDURE AFTER MAINTENANCE.................................................................... 3.31 TORQUE CHART, GENERAL..................................................................................................... 3.38 TORQUE, FLUID CONNECTIONS......................................................................... 3.42, 3.43, 3.44 TRANSMISSION - CHECK OIL LEVEL....................................................................................... 3.27 WEIGHTS OF COMMERCIAL WOOD........................................................................................ 3.45 WHEELS, INSTALLING................................................................................................................. 3.3

3.2

Tigercat 718E 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.

IMPORTANT!

Tightening points for First 125 hour inspection report:

Wheels:

All hydraulic connections Hose clamps Centre 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

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: 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.

NOTE: Use of filters other than genuine Tigercat replacement filters is not recommended.

If your machine is being operated in difficult or severe conditions, you should service your machine at shorter intervals.

Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period. ______________

________________________

*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 0IL (LITERS) LOST 0IL (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 718E Feller Buncher

TIGERCAT OIL SAMPLING PROGRAM Effective for all 700 Series wheeled Feller Bunchers sold in U.S.A. and Canada, oil sampling must be performed during the warranty period as per the schedule below. Warranty coverage of Powertrain components, specifically hydrostatic pump and motors, boom/steer pump, axles, transfer case, pump drive gearbox and driveshafts is contingent on performance of regular oil sampling at the owner’s expense during the warranty period.

700 Series

Location

First Sample

Follow-up Samples

Hydraulic Oil

125 hrs

Every 1000 hrs or 6 Months

Transmission

125 hrs

Every Oil Change (500 hours or 3 Months)

Pump Drive Gearbox

125 hrs

Every Oil Change (500 hours or 3 Months)

*Front & Rear Drive Axle 125 hrs

Every Oil Change (1000 hours)

* Machines 7181081 to 7181102 and 7181109 to 7182000 FIRST SAMPLE There will be no charge for the first oil samples required to be taken during the 100-Hour Inspection Service that will be scheduled and performed by your Tigercat dealer. Refer to NEW MACHINE MAINTENANCE in THIS SECTION. FOLLOW-UP SAMPLES All follow-up samples must be taken as indicated in the chart above and will be the responsibility of the machine owner.

Copies of all oil analysis results must be forwarded to the Tigercat Warranty Department for continued warranty coverage. If samples are taken using the Tigercat Oil Analysis Program, a copy of all results will automatically be sent to Tigercat.

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: Hydraulic Circuits, Final Drives, Axles, Gearboxes, Engines, etc.

To ensure accurate and meaningful results are obtained, each kit also includes detailed instructions on how properly collect, prepare and ship the oil samples.

Contact your Tigercat Dealer Parts Department to order Kits.

3.4

Tigercat 718E Feller Buncher

Lubrication and Maintenance

TIGERCAT OIL SAMPLING PROGRAM OIL SAMPLE COLLECTION PROCEDURES 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.

OIL SAMPLING CONNECTOR

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.

BOOM, STEER, SAW RETURN FILTERS

720E-014

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, the 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, Axles 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).

Contact your Tigercat dealer to purchase additional or replacement hydraulic sample valves or drain plugs.

•

Place the required drain container under the machine to capture the used oil to be discarded using approved recycling methods.

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.

•

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 718E 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.

Before welding on machine be sure master switch is disconnected and disconnect multipin connectors on engine CPU and engine wiring harness. þ When welding secure ground connection as close to working position as possible to prevent arcing across machined surfaces or through bearings. 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 of this manual) ______________________________________

þ Clean around filler caps before checking or adding fluids. þ Release hydraulic pressures and 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

CHECK EMERGENCY EXITS, MONTHLY: Two alternate exit routes are provided: right hand cab door and the skylight/emergency exit. These are only to be used if the left hand cab door cannot be opened.

It is therefore essential that these emergency exits be checked at least once per month to ensure they are fully operational.

3.6

Tigercat 718E Feller Buncher

Lubrication and Maintenance

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.

CHECK FIRE EXTINGUISHER, DAILY:

CAUTION 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.

CHECK CHARGE GAUGE DAILY

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 chaffing.

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 shut off the engine before discharging the fire suppression system.

Also refer to FIRE PREVENTION in SECTION 1 of THIS MANUAL for additional information.

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.

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

3.7

Lubrication and Maintenance

Tigercat 718E Feller Buncher

SCHEDULED MAINTENANCE FREQUENTLY:

Check: • For leakage around hydraulic components and flexible hoses

• Check engine cooling air intake screens for possible restriction

• For loose nuts, bolts and fittings • Condition and tension of fan belts.

• Water pressure gauge in cab (60 psi) for pressurized water system.

EVERY 8 HOURS (EVERY SHIFT): • Perform "frequently" maintenance check,

If the water system has been operated, refer to PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION for refilling and charging instructions.

And in addition: • Check engine oil level • Drain fuel/water separator • Check air intake precleaner, clean as required

• Conduct an overall visual inspection.

• Check air cleaner unloader valve

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

• Check air intake filter restriction indicator.

Replace primary filter if indicator is in red zone.

Replace secondary (safety) filter every third primary filter change to guarantee maximum performance and reliability.

_____________________________ _________________ WARNING

• Check pump drive gearbox oil level with dipstick • Check transmission oil level at dipstick • Check hydraulic oil level

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!

• Lubricate centre joint bearings • Lubricate attachment refer to manufacturer's manual • Lubricate mid drive shaft slip joint* 1-fitting, purge *Note: Lubricate mid drive shaft slip joint with machine articulated • Lubricate centre joint bearings, 2-fittings, purge • Lubricate steering cylinder ends, 4-fittings, purge • Lubricate tilt and lift cylinder ends, 8-fittings, purge • Lubricate lift boom and tilt linkage, 9 or 10 fittings (depending on attachment), purge

•

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)!

IMPORTANT

Clean: • Potentially damaging limbs or sticks from machine

24 VOLT

• Between air conditioner condenser, charge air cooler, oil cooler and radiator

ELECTRICAL SYSTEM

3.8

Tigercat 718E Feller Buncher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 125 HOURS:

EVERY 250 HOURS:

• Perform "frequently" maintenance

• Perform "frequently" maintenance

• Perform 8 hour maintenance

• Perform 8 hour maintenance • Perform 125 hour maintenance

And in addition: • Lubricate rear axle pivot, 2-fittings, purge • Lubricate rear drive shaft slip joint 1-fitting, purge

And in addition replace: • Inspect Flexxaire fan oil level • Oil in pump drive gearbox NOTE: Refer to the service manual section 8 for oil change procedure.

Check: • Engine coolant level.

• Fuel tank filler screen.

• Air intake primary filter element, check restriction indicator at FULL rpm • 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 immediately.

• Charge Air Cooler for damage, wear, cracks, or leaks and repair immediately.

• Fluid level in batteries unless maintenance free • Engine rpm • Hydraulic pump and motor securing bolts • Torque tightening points as per new machine maintenance • Proper operation of pressurized water system.

(Refer to section 2 in the operator's manual)

• 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.

EVERY 500 HOURS:

FLEXXAIRESERVICE.XLS

Visually check for damage to: • Lift boom and tilt linkage • Front and rear frame • Centre joint area • Attachment Make repairs immediately Visually inspect for: • Frayed electrical wiring and hydraulic hose • Wear in any other components Clean/replace: • Air conditioner re-circulation filter • Cab fresh air filter • Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

3.9

Lubrication and Maintenance

Tigercat 718E Feller Buncher

SCHEDULED MAINTENANCE • Perform 8 hour maintenance • Perform 125 hour maintenance

EVERY 1000 HOURS: • Perform "frequently" maintenance

• Perform 250 hour maintenance

• Perform 8 hour maintenance

And in addition replace: • Engine fuel filter(s)

• Perform 125 hour maintenance • Perform 250 hour maintenance

• Hyd. Oil press. Filter, drive charge press. †

• Perform 500 hour maintenance

• Hyd. Oil return filters, boom/steer/saw (high pressure)†

• Perform FLEXAIRE maintenance see Table 1 And in addition replace : • Engine air cleaner unloader valve

• Hyd. Oil return filter, pilot (low pressure) † • Lubricate door and door screen hinges.

Check: • All hydraulic pressures • Transmission mounting; Check, re-torque • Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

• Fuel intake strainer • Strainer in accumulator charge valve • Oil in axles, front and rear (machines 7181081 to 7181102 and 7181109 7182000) NOTE: Refer to the service manual section 8 for oil change procedure.

And in addition: • Lubricate front and rear axle pinion grease seal (machines 7181081 to 7181102 and 7181109 7182000) 1-fitting per axle, purge.

Check: • No motion between centre joint lugs. Refer to Centre JOINT MAINTENANCE in THIS SECTION.

† 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.

Refer to SECTION TEN of the SERVICE MANUAL for procedures.

FLEXXAIRESERVICE.XLS

3.10

Tigercat 718E Feller Buncher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 2000 HOURS: • Perform "frequently" maintenance • Perform 8 hour maintenance • Perform 125 hour maintenance • Perform 250 hour maintenance • Perform 500 hour maintenance • Perform 1000 hour maintenance • Perform FLEXAIRE maintenance see Table 1

Refer to SECTION TEN of the SERVICE MANUAL for procedures.

And in addition replace: • Oil in hydraulic reservoir

SEASONAL:

FLEXXAIRESERVICE.XLS

• Water in pressurized water system

Drain and refill hydraulic oil tank (and both front and rear axles on machines 7180901 to 7181080 and 7181103 to 7181108) with recommended hydraulic oil. See "approved hydraulic oils". Also see section 8 of the service manual for axle draining procedure.

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

• Oil in axles, front and rear (machines 7180901 to 7181080 and 7181103 to 7181108) NOTE: Refer to the service manual section 8 for oil change procedure.

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)

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.

_______ In addition to providing the vehicle with its normal operational functions, hydraulic oil is also used to fill the axle assemblies, apply brakes and operate differential locks.

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.

Wet disk brakes in the axles require oil with specific properties to ensure reduced chatter and ensure proper lubrication of mechanical components.

See APPROVED HYDRAULIC OILS in this MANUAL.

NOTE: Check all hydraulic system components for proper operation after hydraulic oil has been replaced. † Use of filters other than genuine Tigercat replacement filters is not recommended.

3.11

Lubrication and Maintenance

Tigercat 718E Feller Buncher

APPROVED HYDRAULIC OILS MACHINE SERIAL NUMBERS 7180901 TO 7181370 In addition to providing the vehicle with its normal operational functions, hydraulic oil is also used to fill the axle assemblies, apply brakes and operate differential locks.

Wet disk brakes in the axles require oil with specific properties to ensure reduced chatter and ensure proper lubrication of mechanical components.

Use only one of the following oils to fill or replenish the hydraulic system.

Chevron

Tractor hydraulic fluid (summer)

Citgo

Tractor hydraulic fluid (33-310) (summer)

Imperial

Esso hydraul 56 (summer)

Shell

Hydraul 50 (low visc) (winter) Donax TD (summer) Donax TDL (winter)

Sun

Sunfleet th fluid (summer)

John Deere

Type J20C (hy-gardtm) (summer)

Type J20D (hy-gardtm) (winter)

3.12

Tigercat 718E Feller Buncher

Lubrication and Maintenance

APPROVED HYDRAULIC OILS MACHINE SERIAL NUMBERS 7181371 TO 7182000

3.13

Lubrication and Maintenance

Tigercat 718E Feller Buncher

7180901 TO 7181080 AND 7181103 TO 7181108

36687B R1

3.14

Tigercat 718E Feller Buncher

Lubrication and Maintenance

7180901 TO 7181080 AND 7181103 TO 7181108

3.15

Lubrication and Maintenance

Tigercat 718E Feller Buncher

7181081 TO 7181102 AND 7181109 TO 7182000

45855BENG R1

3.16

Tigercat 718E Feller Buncher

Lubrication and Maintenance

7181081 TO 7181102 AND 7181109 TO 7182000 Tigercat ® Model 718E SERVICE AND LUBRICATION POINTS REFER TO Tigercat OPERATOR'S MANUAL FOR FURTHER INFORMATION

SCREENS (COOLING SYSTEM)

3

ENGINE OIL AND FILTER CUMMINS QS B

4

FUEL FILTER

5

FUEL/WATER SEPARATOR

6

FUEL CAP SCREEN

31

8.2

DESCRIPTION QTY

1000

500

250

USG

2

CHK

LITERS

COOLING SYSTEM

125

8

1

CAPACITY 2000

SERVICE POINT NO.

SERVICE EVERY ITEM

60% ANTIFREEZE/40% DISTILLED WATER (GM6035M SPEC.) CLEAN SCREENS AND COOLING CORES(3).

SEE SECTION 2 OPERATOR'S MANUAL

CHK CHK

•

• DRN

•

R EP

1

R EP

1

CHK CHK

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

7

INTAKE FUEL STRAINER

8

AIR INTAKE PRECLEANER

CHK

1

9

AIR INTAKE PRIMARY FILTER ELEMENT

CHK

1

10

AIR INTAKE SAFETY FILTER ELEMENT

CHK

1

11

AIR CLEANER UNLOADER VALVE

CHK

REP R EP

REFER TO SECTION 3 IN MANUAL

3

CHECK FOR LOOSE CLAMPS AND DAMAGED RUBBER COMPONENTS. REPLACE RUBBER COMPONENTS.

1

WATER ABSORBING (BLUE)

AIR INTAKE CONNECTIONS

13

HYDRAULIC OIL FILTER BOOM/STEER/SAW

REP †

15

HYDRAULIC OIL FILTER PILOT/LOW PRESSURE RETURN

REP †

1

16

HYDRAULIC OIL FILTER HYDRAULIC DRIVE CHARGE PRESSURE

REP †

1

17

A/C & HEATER FILTERS

REP †

2

CHK

2

18

PUMP DRIVE GEARBOX

CHK

D/ R

4

1.1

19

TRANSMISSION

CHK

D/R

4.9

1.3

26.5 24.6

7.0 6.5

20

AXLES:

FRONT REAR

21

PINION GREASE SEAL - FRONT/REAR AXLE

22

HYDRAULIC TANK

D/R D/R

CHK

PARKING BRAKE

24

ATTACHMENT

LUB

25

PRESSURIZED WATER SYSTEM

CHK TEST

26

CENTER JOINT PIVOT

LUB

27

REVERSIBLE FAN

PURGE

LUB

23

TO 8 HOUR SCHEDULED MAINTENANCE FOR DETAILS (SECTION 3 IN MANUAL).

1

12

14

CHK

• SEE ENGINE MANUFACTURER'S MAINTENANCE MANUAL FOR PROCEDURES, CAPACITIES AND REPLACEMENT INTERVALS

D/R

CHK

D/R

148

0.5

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

2

39

ONE FITTING PER AXLE LITHIUM BASE EP2 GREASE REFER TO MANUAL FOR APPROVED OILS. 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 CHK CHK

2

•

•

3.17

•

CHECK MOTION BETWEEN CHASSIS LUGS

• SEE FAN MANUFACTURER'S MAINTENANCE MANUAL OR TIGERCAT SERVICE MANUAL FOR SERVICE AND MAINTENANCE INTERVALS

Lubrication and Maintenance

Tigercat 718E Feller Buncher

FILTERS - REMOVE AND REPLACE IMPORTANT:

WATER SEPARATOR

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 catalogue for replacement filters.

FUEL FILTER

FUEL FILTER/WATER SEPARATOR Two fuel filters are supplied with the engine.

Refer to the engine manufacturer's operation and maintenance manual for service information and replacement interval.

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.

724E-027

FUEL FILTER/WATER SEPARATOR

PRIMING THE FUEL SYSTEM

Tigercat generally does not recommend the prefilling of fuel filters due to the risk of damage to the fuel system caused by unfiltered fuel. Unfiltered fuel used to prefill 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 prefiltered before use.

Whenever the fuel system has been drained, disconnected or the fuel filters have been replaced, the fuel system must be primed to remove any air from the system.

1. Turn the ignition key to the 'ON' position to activate the fuel shut-off valve.

2. Open the primer (hand) pump on the fuel filter/ water separator and pump fuel into the filters until fuel begins to seep out of the vent on the primer pump shaft. Close the primer pump and wipe up any spilled fuel.

3. Refer to the engine manufactures operation manual for more information on priming the fuel system.

3.18

Tigercat 718E Feller Buncher

Lubrication and Maintenance

FUEL TANK STRAINER This is a stainless steel fuel strainer, screwed on to the inlet pipe of the engine fuel feed line inside at the bottom of the fuel tank.

Changing or cleaning the strainer: 1. Park machine on level ground, install articulation lock pin, lower cutting head to ground, stop engine, engage parking brake and block wheels.

2. Drain the fuel tank. (plug in bottom).

3. Remove the round fuel tank cleanout 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 may be damaged by rough handling).

718E-060

FUEL TANK STRAINER

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.

6. Check for a buildup of foreign materials where the strainer threads on to the pipe and elbow.

7. Reinstall the strainer using the hex on end.

8. Reinstall fuel tank cover plate with O-ring.

When installing a new fuel filter, DO NOT prefill with diesel fuel, or engine fuel pump damage will result. This type of failure is not warrantable by the engine manufacturer.

9. Refuel and check for leaks. Start the engine and check for leaks again.

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 prefiltered prior to adding it to the machine.

It is extremely important that the fuel be kept clean and free of dirt, water and any other contaminants. Use only clean prefiltered fuel to refuel this machine. Refer to the engine manufacturer's operation and maintenance manual for fuel specifications and recommendations.

3.19

Lubrication and Maintenance

Tigercat 718E Feller Buncher

HYDRAULIC OIL RETURN FILTERS

 Square Section Gasket

There are three full flow filters mounted on a triple filter head with built-in bypass. Oil returning from the boom, saw, steer and fan flows through these filters. One of the filters is coloured blue indicating that it contains a water absorbing element. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.

FILTER HEAD

GASKET

IMPORTANT: Contaminated hydraulic fluid 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.

FILTER ELEMENT

FILTR_SEALS 2

SQUARE SECTION GASKET INSTALLATION a. Remove used gasket and clean groove in head.

Use of hydraulic oil filters other than the Tigercat brand could lead to severe wear and rapid failure of hydraulic system components.

b. Apply clean oil to new gasket surfaces. c.

RETURN FILTER WITH WATER ABSORBING ELEMENT (COLOR BLUE)

Install new gasket into groove in filter head.

d. Screw on new filter until gasket makes contact. e. Tighten filter an additional ¾ turn.

FILTER HEAD

GASKET FILTER ELEMENT FILTR_SEALS 2

BOOM, STEER, SAW RETURN FILTERS

720E-014

O-RING GASKET INSTALLATION

NOTE: DO NOT use bottom nut for filter installation or damage/leakage may result. Bottom nut is to assist in filter removal only.

HYDRAULIC OIL RETURN FILTERS

Changing the filters:

 O-Ring Gasket

1. Park machine on level ground, install articulation lock bar, lower attachment to ground, stop engine, engage parking brake and block wheels.

a. Remove used gasket and clean gasket seat in head. b. Apply clean oil to new gasket surfaces.

2. Wipe clean the area around the filter and head.

c.

3. Place a container and rags below to catch the spillage of oil.

d. Screw on new filter until gasket makes contact.

4. Wearing face protection (in case of an oil squirt), unscrew the old filter. Dispose of old filter and any oil properly.

e. Tighten filter until top edge makes metal to metal contact with filter head.

5. 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.

f.

Install new gasket on inside lip of filter.

(Approximately 1½ additional turns after gasket contact).

NOTE: DO NOT use bottom nut for filter installation or damage/leakage may result. Bottom nut is to assist in filter removal only.

6. Start the engine and check for leaks.

3.20

Tigercat 718E Feller Buncher

Lubrication and Maintenance

HYDRAULIC FILTER SERVICING GUIDELINES IMPORTANT! NEVER PRE-FILL HYDRAULIC FILTERS

CHARGE PRESSURE FILTER PILOT AND CASE DRAIN RETURN FILTER

HYDROSTATIC CHARGE PUMP PRESSURE AND PILOT/CASE DRAIN FILTERS There are two other full flow filters mounted on filter heads with built-in bypasses. One is in the output side of the hydrostatic drive charge pump and the other is the case drain and pilot return. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. Changing the filters:

Tigercat generally does not recommend the prefilling of spin-on filters due to the risk of damage to the hydraulic system caused by unfiltered oil.

Unfiltered oil used to prefill 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 prefiltered before use.

WARNING

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!

1. Park machine on level ground, install articulation lock bar, lower cutting head 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.

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.

3.21

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)!

Lubrication and Maintenance

Tigercat 718E Feller Buncher

AIR CLEANER MAINTENANCE

726D-008

AIR CLEANER

ENGINE AIR CLEANER

726D-007

The air cleaner on this machine uses two filter elements; a primary element and a safety element accessible in the hydraulic pump compartment.

AIR INTAKE PRECLEANER

ENGINE AIR PRECLEANER 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.

To ensure maximum engine protection, it is important that the elements be serviced correctly and at proper servicing intervals.

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.

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

FILTER RESTRICTION INDICATOR

726D-020

FILTER RESTRICTION INDICATOR

A filter restriction indicator is mounted to the output side of the air cleaner. This should show green when the engine is running at FULL RPM Service is required only if the indicator shows red.

CHECK SPINNER BLADES FOR WEAR. REPLACE IF WORN.

UNLOADER VALVE

726D-008

AIR CLEANER UNLOADER VALVE

AIR CLEANER UNLOADER VALVE

THE TURBO II PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN TURBO 2

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER

TURBO II PRECLEANER OPERATION

This rubber valve on the body 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.

3.22

Tigercat 718E Feller Buncher

Lubrication and Maintenance

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 body.

SAFETY ELEMENT

When operating in high dust conditions, the unloader valve should be checked and squeezed every 2 hours to release dust buildup.

In addition to the LUBRICATION AND MAINTENANCE SCHEDULE outlined in THIS SECTION, the following instructions should also be noted: The most common and damaging servicing problems are: 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.

SERVICING Engine exposure to dust during servicing is a large reason for engine damage due to dust.

PRIMARY ELEMENT 726D-006PLT AIR FILTER ELEMENTS IMPORTANT STEPS TO FOLLOW WHEN CHANGING FILTER ELEMENTS 1. Release the cover latch gently to reduce the amount of dust dislodged.

2. Avoid dislodging dust from filter element(s) by gently pulling the element off the outlet tube.

3. Check your old filter sealing surfaces, This will help detect foreign material on the sealing surface that is causing leakage.

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.

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.

4. Always clean the inside of the outlet tube.

5. Always clean the sealing surface of the outlet tube before inserting a new filter element.

EVERY 125 HOURS Check the Engine Air Intake System components (including the 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 immediately.

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.

Also check the Charge Air Cooler for damage, wear, cracks, or leaks and repair immediately.

8. Check connections and ducts for an air tight fit. Ensure that all clamps, bolts and connections are tight. Check rubber elbows for splits or wear points. Leaks in these locations send dust directly to the engine.

3.23

Lubrication and Maintenance

Tigercat 718E Feller Buncher

PRESSURIZED WATER SYSTEM MAINTENANCE

FILL & CHARGE PRESSURIZED WATER SYSTEM

OPERATION: HOSE

WATER SHUT OFF VALVE (SHOWN CLOSED)

a. Completely discharge all water and compressed air from the tank via the hose end nozzle.

9

196-16A

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.

PRESSURIZED WATER SYSTEM CONTROL VALVE (UNDER SEAT)

Turn the hand operated ball valve (shut off valve) under the seat to the ON position to draw water from the 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.

b. 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.

AIR CHARGE VALVE

TANK FILL PLUG PRESSURE GAUGE 724E T4-066

PRESSURIZED WATER SYSTEM

The pressure gauge on the side of the seat should read 4.14 bar (60 psi).

724E-049

c.

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 4.14 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.

PRESSURIZED WATER SYSTEM

Close water shut off valve and fill tank with water. Tank capacity is approximately. 16L (4.2 US gals). NOTE: When temperatures below 0° C (32°F) are anticipated, add a Nontoxic RV Antifreeze or other suitable antifreeze solution to the water (50% water, 50% RV antifreeze).

NOTE: Most Nontoxic RV Anti freeze 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.

d. Install fill plug in tank. e. Charge water tank with compressed air by connecting an air hose to air charge valve on side of seat near the pressure gauge.

Pressurize to 4.14 bar (60 psi) as indicated on pressure gauge.

3.24

Tigercat 718E Feller Buncher

Lubrication and Maintenance

PURGING PRESSURIZED WATER SYSTEM

REPLACING THE ENGINE SERPENTINE BELT

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 4.14 bar (60 psi).

1. Park the machine on level ground. Parking brake ON, felling head resting on the ground and engine off. Turn battery disconnect switch OFF.

a. Follow procedures (a) and (b) from FILL & CHARGE PRESSURIZED WATER SYSTEM and continue with:

A/C COMPRESSOR BELT

b. Close the water shut off valve and add 7.6L (2 US gals) of clean water to the tank. Reinstall the fill plug and charge the system with 4.14 bar (60 psi) of compressed air through the charging valve. c.

BELT TENSIONER

Open the shut off valve and completely discharge all the water in the tank via the hose end nozzle.

d. 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. e. After the purging operation, fill and charge the system as described in FILL & CHARGE PRESSURIZED WATER SYSTEM in THIS SECTION.

724E-005

CHECK A/C COMPRESSOR BELT 2. Loosen the two bolts on the A/C compressor belt tensioner bracket and remove the A/C compressor belt.

3. Install a Johnson bar with a 1/2" 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.

6. Install the A/C compressor belt and adjust the tension to provide 9.5 mm (3/8") belt deflection at the centre of the belt span between the two pulleys.

3.25

Lubrication and Maintenance

Tigercat 718E Feller Buncher

CHECKING THE AIR CONDITIONING SYSTEM REMOVE WING NUTS AND PANEL TO GAIN ACCESS TO EVAPORATOR CORE

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.

INSIDE RIGHT CAB DOOR

EVAPORATOR CORE LOCATION d. Check the evaporator core and the inside of the A/C housing for dirt and debris. Clean as required.

718E-027

A/C SYSTEM TOTAL CAPACITIES R134A REFRIGERANT 1.23 kg (2.75 lbs)

PAG OIL (polyalkylene glycol) 0.2 kg (7 oz)

e. Run air conditioning system for 3 - 5 minutes. f.

The compressor and charge valves are accessed from the left side engine compartment. The condenser core and receiver drier are accessed in the compartment behind the cab. The evaporator core is accessed on the right hand side of the machine just inside the right cab door.

Check to see that compressor clutch will engage.

A/C CONDENSER

RECEIVER DRIER

A/C COMPRESSOR

REMOVE (2) WING NUTS FROM THESE STUDS

CHARGE VALVES

718E-025

718E-026

Use this checklist to maintain system between service intervals. a. Check and adjust compressor drive belt tension. b. Check air intake filters and clean as required. c.

Check the condenser core for dirt and debris.

Clean as required. Refer to CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR in SECTION 2 of the OPERATOR'S MANUAL.

CAUTION • If using compressed air for cleaning, use at 2.07 bar (30 psi) or less.

• Always use personal protective equipment to guard against flying debris.

718E-004

SWING OPEN A/C CONDENSER

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.

3.26

Tigercat 718E Feller Buncher

Lubrication and Maintenance

CENTRE JOINT

TRANSMISSION

MAINTENANCE OF CENTRE JOINT Maintenance in this area is usually limited to:

By carefully following these procedures, the service life of the transmission will be extended and costly down time will be avoided.

a) Regular lubrication of the two centre 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 disulphide.

For additional information, refer to TRANSMISSION in SECTION 8 of the SERVICE MANUAL.

TRANSMISSION OIL LEVEL CHECK

b) Visually checking the centre joint pivot for looseness every 1000 hours. With an observer on the ground, keeping well clear of the centre joint area, perform the following test to check for looseness of centre joint.

1. Have operator lift the felling head off the ground and then rapidly raise and lower the head several times to "bounce" machine.

2. As machine bounces, check for motion between the front and rear chassis frame lugs. Also check for a "clunking" sound at the centre joint area.

REAR CHASSIS

FRONT CHASSIS

CHECK FOR MOVEMENT IN THIS JOINT AREA

724D-D11

718E-008

CHECK TRANSMISSION OIL LEVEL

CHECK OIL LEVEL Check oil level at end of every 8 hour shift.

Procedure: •

Drive machine for a minimum of 5 minutes to ensure that the lubrication pump is primed.

•

Park on level ground, lower felling head, engage parking brake and turn off engine.

•

Clean dirt and debris from around oil dipstick and check oil level.

•

If required: add the recommended grade of oil using the transmission oil fill tube.

Do not overfill.

1000 HOUR CHECK 3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked. Refer to SECTION 11 of the SERVICE MANUAL for checking procedure.

3.27

Lubrication and Maintenance

Tigercat 718E 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

726M-012

The most common cause of joint and slip spline failure is lack of proper lubrication.

REAR SLIP SPLINE

726M-009

REAR SLIP SPLINE LUBRICATION Apply grease to grease nipple (1) until new, clean grease appears at the relief hole at yoke end of slip spline, FIG. 'C'.

Plug or cover relief hole and continue to apply pressure to grease nipple until new, clean grease appears at slip spline seal.

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.

2

GREASE GUN

1

726M-008

MIDDLE SLIP SPLINE

MIDDLE SLIP SPLINE LUBRICATION Apply grease to grease nipple (1) until new, clean grease exits from the relief fitting (2).

1

GREASE APPEARS AT RELIEF HOLE

2

720C-01

726M-011

FIG. 'C' REAR DRIVE SHAFT YOKE END

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 reapply 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.

3.28

Tigercat 718E Feller Buncher

Lubrication and Maintenance

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) 37 lbf/ft (50 Nm) lubricated FRONT DRIVE SHAFT

REAR DRIVE SHAFT

MIDDLE DRIVE SHAFT

724E-016 724E-042 724E-043 724E-044

DRIVE SHAFT INSTALLATION 7180901 TO 7181080 AND 7181103 TO 7181108 3.29

Lubrication and Maintenance

Tigercat 718E Feller Buncher

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) 37 lbf/ft (50 Nm) 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

DRIVE SHAFT INSTALLATION 7181081 TO 7181102 AND 7181109 7182000 3.30

Tigercat 718E Feller Buncher

Lubrication and Maintenance

START-UP PROCEDURE AFTER MAJOR MACHINE MAINTENANCE

1. Check oil levels in the engine, the pump drive gearbox and the transmission.

This procedure should be followed:

2. Check coolant level in the radiator.

•

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 this section.

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.

PRE-STARTUP AND FILLING

REMOVE PLUG

DRIVE PUMP

DIPSTICK IS ON BACKSIDE OF GEARBOX

720E-012 724ET4-050

CHECK PUMP DRIVE GEARBOX OIL LEVEL (7180901 TO 7181370)

DIPSTICK

718E-043

CHECK PUMP DRIVE GEARBOX OIL LEVEL (7181371 TO 7182000)

•

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 prefiltered 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 SECTION 8 of THE SERVICE 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.

6. Proceed to MACHINE START-UP procedure.

3.31

Lubrication and Maintenance

Tigercat 718E Feller Buncher

MACHINE START-UP

NOTE: If charge pressure gauge does 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.

Before beginning this procedure, perform the PRE START-UP AND FILLING steps.

NOTE: When the saw head is attached, retorque all teeth (See saw manual). Attach the SAW BLADE GUARD and insert the SAW BLADE LOCKING PIN.

6. Reconnect engine wiring harness multi-pin connector.

1. Ensure the articulation lock bar is installed.

7. 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. Do not operate any functions.

DISCONNECT THE MULTI-PIN PLUG FROM THE ENGINE CPU

8. With engine at IDLE, parking brake ON, hold foot brake down, bleed brakes in rear axle.

724E-020

2. Disconnect the engine wiring harness multi-pin connector (prevents engine starting).

CAUTION Machine operator must ONLY take directions from the person doing the set-up.

9. On machines 7180901 to 7181080 and 7181103 to 7181108, hold both differential locks ON and run engine at IDLE for 30 minutes to purge air and fill axles with oil (axles fill with leakage from differential locks).

If wheels are not on, operate forward and reverse pedals very slowly with differential locks on to fill axles with oil.

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.

INSTALL A 0 - 70 BAR (0-1000 PSI) GAUGE AT ‘M3’ PORT.

DRIVE PUMP

CRANK ARM

LINK ARM

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.

724E-047

4. Close cab doors, turn ignition key switch to the 'ON' psition and depress the pilot reset switch. This will allow pilot oil to circulate and refill the pilot and case drain circuits during the following cranking procedure.

5. Crank engine for 5 seconds, 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.

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.

3.32

Tigercat 718E Feller Buncher

Lubrication and Maintenance

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.

HOSE AND SUCTION TUBE (DUST CAP NOT SHOWN)

11. Set throttle to FULL and run each function again for 2 minutes to flush circuit.

12. Set throttle to idle and shut engine off.

QUICK CONNECTOR NIPPLE (DUST CAP NOT SHOWN) QUICK CONNECTOR COUPLER FILL HOSE

HAND FILL PUMP PLUG

718E-014

HAND FILL PUMP

15. If required, top up the hydraulic oil reservoir with clean hydraulic oil using the hand fill pump.

16. Remove gauge from M3 test port on drive pump. Clean up any spilled oil.

195-17

CHECK ENGINE COOLANT LEVEL

13. Top up the radiator with clean coolant.

3

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.

SIGHTGAUGE GAUGE-SIGHT HYD.OIL OILLEVEL LEVEL HYD.

SENDING UNIT LOW HYDRAULIC OIL SENDING UNIT LOW HYDRAULIC OIL

724E-026 718E-005

HYDRAULIC OIL RESERVOIR HYDRAULIC OIL TANK

14. With cylinders fully retracted, check hydraulic oil level.

3.33

Lubrication and Maintenance

Tigercat 718E Feller Buncher

FAN CONTROL

CAUTION

ELECTRONIC CONTROLLER

Before placing the fan switch in the CLEAN (PURGE) position make sure that there are no personnel on either side of the machine in the area where the fan will expel debris.

When the switch is pressed momentarily to the CLEAN (PURGE) position, the control module will signal the pilot control valve to reverse the blade pitch to maximum -30 degrees reversing the air flow for 15 seconds. The control module will also turn the air conditioning system OFF for as long as the fan is in the CLEAN (PURGE) mode.

724E-025

ELECTRONIC FAN CONTROLLER WIRING

ELECTRONIC CONTROL MODULE BLINK CODES GREEN LED RED LED

720D-052

FAN ELECTRONIC CONTROL MODULE

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.

724E-018

ELECTRONIC CONTROL MODULE

The electronic control module has two LED lights on the front top left side of the controller. A GREEN LED is used to indicate that power is ON and the controller is activated. The RED LED is used to provide a visual warning in the form of BLINK CODES whenever the controller senses a fault in the system.

724E-004

FAN SWITCH

The chart on the following page can be used for BLINK CODE TRANSLATION AND DIAGNOSTICS.

When the switch is in the AUTO position the fan blade is at maximum (30°) pitch (pull mode).

Every ten minutes the fan control module will automatically reverse pitch the fan blades (AUTO CLEAN/REVERSE or push mode) for 15 seconds to clean debris off the intake side of the cooler assembly and then return to the pull mode.

When the switch is in the FULL ON (OVERRIDE) position, the fan will run at maximum blade pitch angle for cooling regardless of coolant, air intake or oil temperatures. The AUTO CLEAN/REVERSE feature will not function in the FULL ON position.

3.34

••••

46

3.35

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

••••••••

•••••••

••••••

••••

•••

••

•

••••••

Fan runs at full speed forward. Fan will not automatically reverse and Current is out of operating range. Check connections between relay and controller. Check relay ground controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine connections. Check relay. diagnostic display.

Fan will continue in increase pitch until is running at full pitch, will not Current is out of operating range at the fan pitch forward coil. Check connections between the coil and the decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan controller. Check coil ground connections.

Controller Fault to the Engine diagnostic display.

A/C OFF Output Relay is out of operating Range

Fan Pitch Forward Coil is out of operating range

Fan runs at full speed forward. Fan will not automatically reverse.

Hydraulic Oil has reached/exceeded Overheat Set Point. Decrease hydraulic oil temp to below overheat set point.

Coolant has reached/exceeded Overheat Set Point. Decrease coolant temp to below overheat set point.

Fan runs at full speed forward controller and will send SPN 977 FMI 11 Engine J1939 not present or Faulted. Check that J1939 backbone is in good condition, all resistors and Fan Controller Fault to the Engine diagnostic display. Fan will not connectors are properly connected. automatically reverse.

Fan runs at full speed forward and controller will send SPN 977 FMI 11 Resistance is out of operating range at hydraulic oil temprature sender. Check connection between the hydraulic Fan Controller Fault to the Engine diagnostic display. Fan will not temperature sender and controller and replace hydraulic oil temperature sender if necessary. automatically reverse.

Hydraulic Overheat Condition Fan runs at full speed forward. No effect on automatic reverse. Engine diagnostic display reads fault code SPN 1638 FMI 0

Engine Coolant Overheat Condition

J1939 CAN BUS Fault

Hydraulic Oil Temperature Sender out of range

Fan will continue in increase pitch until is running at full pitch, will not Current is out of operating range at the fan pitch reverse coil. Check connections between the coil and the Fan Pitch Reverse Coil is out decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan controller. Check coil ground connections. of operating range Controller Fault to the Engine diagnostic display.

Electronic Saw gauge in cab will not operate correctly.

Pressure transducer has malfunctioned or has become disonnected and no signal is present. Check the signal wire from the transducer. When the transducer is given 5V sensory power, 0.5 V should be present at the signal wire at 0 psi.

(To diagnose fault)

POSSIBLE CAUSE / SOLUTION

Saw Pressure Sensor Fault

(Only when fault code is active)

EFFECT

PLUS1 CONTROLLER FAULT CODE INFORMATION

"RED LED" and "GREEN LED" will flash momentarily when master disconnect is switched from "off" to "on"

"GREEN LED" ON Steady indicates System is Activated/ON

2) If multiple faults are present a 5 second delay will separate the Fault Code Sequences.

NOTES : 1) To clear fault codes from controller, turn master disconnect switch "off", wait 15 secs, and turn "on". If fault persists see Possible Cause/Solution.

••••

••••

44

48

••••

43

••••

••••

42

47

••••

41

1 sec

(Fault Location)

(Flash Bit Sequence)

•

DESCRIPTION

"RED LED"

16

FAULT CODE

BLINK CODE TRANSLATION / DIAGNOSTICS

Tigercat 718E Feller Buncher Lubrication and Maintenance

Lubrication and Maintenance

Tigercat 718E Feller Buncher

SPEED CONTROL LEVER ADJUSTMENT 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 reduce over time, during normal operation, and not maintain the set position of the lever, especially at maximum throw.

PROCEDURE Before starting work, read and follow all servicing safety precautions in SECTION 1 of THIS MANUAL. 1. Park machine on level ground, apply parking brake, lower attachment to ground, shut off engine.

2. Position the speed control lever (1) in the neutral position (pointing straight up).

M724D-02

3. Raise the protective rubber ‘boot’ from the speed control valve body.

SPEED CONTROL LEVER

4. Locate the adjustable friction set screw.

5. Tighten the adjustable friction set screw as required (2.5mm hex key)

SPEED CONTROL LEVER

6. Replace the protective rubber ‘boot’ over the speed control valve body.

PROTECTIVE RUBBER BOOT

RIGHT HAND SIDE OF MACHINE

ADJUSTABLE FRICTION SET SCREW

630B-31

3.36

SPEED CONTROL LEVER FRICTION SET SCREW LOCATION

Tigercat 718E Feller Buncher

Lubrication and Maintenance

TORQUE CHART LOCATION

THREAD DIAMETER

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 CUMMINS engine

M10 x 1.5 (10.9) M10 x 1.5 (10.9)

32 32

43 43

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.

718E TORQUE CHART R1.0

3.37

Lubrication and Maintenance

Tigercat 718E Feller Buncher

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 8 BOLTS GRADE 5 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

3.38

Tigercat 718E Feller Buncher

Lubrication and Maintenance

Tigercat wire colour 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 lbs.

HP Gallons Inches lb.-ft. lbs.

To Convert

Multiply By

Cu. in. °F Gallons HP Inches lbs. lb.-ft.

PSI In. of HG In. of H2O lbs.

14.5 0.06102 (°C x 9/5) + 32 2.205 1.341 0.2642 0.03937 0.7375 0.22481

3.39

Into

cc °C Liters KW mm Kg N-m bar PSI PSI N

Multiply By

16.39 (°F - 32) /1.8 3.785 0.7457 25.4 0.4535 1.356 0.06896 .4912 .03613 4.4482

Lubrication and Maintenance

Tigercat 718E Feller Buncher

PRESSURE SETTINGS WITH SAW

With hydraulic oil between 49°C - 60°C (120°F - 140°F) Location

BAR

Pressure

(PSI)

Engine RPM (± 25 RPM No Load)

2350 High Idle 850 Low Idle

Pilot Manifold Pressure Relief Valve Pressure Reducing Valve Drive Pump 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

52 38

750 550

1000 1000

29.3

425

1800

331 331 365.4 365.4

4800 4800 5300 5300

2200 2200

255

3700

2200

172.4 207 207

2500 3000 3000

2200 1000 1000

276 214 248 16 - 19

4000 3100 3600 225 - 275

1000 2200 2200 2200

179.3 200 200 76 221 221 221 200 152

2600 2900 2900 1100 3200 3200 3200 2900 2200

2200 1000 1000 1000 1000 1000 1000 1000 1000

Drive Motor Drive Motor P.O.R. Steer Valve (Joystick Steering Only) Steer Valve Main Relief Steer Right Port Relief Non-Adjustable Steer Left Port Relief Non-Adjustable Saw Saw Valve Main Relief Saw Motor P.O.R. Saw Pump P.O.R. Stand-by Pressure Boom Valve Mid Inlet Main Relief Tilt In Port Relief Tilt Out Port Relief Clamp Open Port Relief Clamp Close Port Relief Accumulator Clamp Open Port Relief Accumulator Clamp Close Port Relief Boom Lift Port Relief Boom Lower Port Relief

Engine RPM

IMPORTANT NOTES: ~ Boom support must be used part# 4128A ~ When performing tilt out function, without a felling head installed, 718E Presset-Saw R2.XLS do not allow crank arms to hit boom

PRESSURE SETTINGS-SAW

3.40

Tigercat 718E Feller Buncher

Lubrication and Maintenance

PRESSURE SETTINGS WITH SHEAR

With hydraulic oil between 49°C - 60°C (120°F - 140°F) Location

BAR

Pressure

(PSI)

Engine RPM (± 25 RPM No Load)

Engine RPM 2350 High Idle 850 Low Idle

Pilot Manifold Pressure Relief Valve Pressure Reducing Valve

52 38

750 550

1000 1000

Drive Pump 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

331 331 365.4 365.4

4800 4800 5300 5300

2200 2200

Drive Motor Drive Motor P.O.R. Loop flushing Pressure Relief Non-Adjustable

255 24.8

3700 360

2200

Steer Valve (Joystick Steering Only) Steer Valve Main Relief Steer Right Port Relief Non-Adjustable Steer Left Port Relief Non-Adjustable

172.4 207 207

2500 3000 3000

2200 1000 1000

Shear Cutter Control Valve Main Relief Shear Pump P.O.R. Standby Pressure

276 241.3 16-19

4000 3500 225-275

2200 2200 2200

Boom Valve Mid Inlet Main Relief Tilt In Port Relief Tilt Out Port Relief Shear Open Port Relief Accumulator Clamp Open Port Relief Accumulator Clamp Close Port Relief Boom Lift Port Relief Boom Lower Port Relief Shear & Clamp Close Port Relief Clamp Open Port Relief

179.3 200 200 221 221 221 200 151.7 255 255

2600 2900 2900 3200 3200 3200 2900 2200 3700 3700

2200 1000 1000 1000 1000 1000 1000 1000 1000 1000

718E Presset-ShearR2.XLS

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

PRESSURE SETTINGS-SHEAR

3.41

Lubrication and Maintenance

Tigercat 718E Feller Buncher

Parker

Assembly Torque The four-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.

The 4-Bolt Split Flange consists of four main components: • A body (flange head) • An O-ring • One “captive” or two “split” flange clamps

• Four bolts and washer

WASHERS BOLTS FLANGE CLAMP

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

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

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

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

* Does not meet ISO 6162 specification.

Table T6 - Code 61 Flange Recommended Bolt Torque

3.42

Tigercat 718E Feller Buncher

Lubrication and Maintenance

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

3.43

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

Lubrication and Maintenance

Tigercat 718E Feller Buncher

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

3.44

Tigercat 718E Feller Buncher

Lubrication and Maintenance

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.

3.45

Lubrication and Maintenance

Tigercat 718E Feller Buncher

3.46

Tigercat 718E Feller Buncher SECTION 5 - PILOT SYSTEM

PILOT SYSTEM............................................................................................................................................ 5

CONTENTS - SECTION 5

ISSUE 3.0, JULY, 2015

ACCUMULATOR CHARGING................................................................................................................................ 5.4 CHECKING PRE-CHARGE PRESSURE.................................................................................. 5.4 ACCUMULATOR CHARGE VALVE............................................................................................... 5.2 OPERATING DESCRIPTION.................................................................................................... 5.2 ACCUMULATORS......................................................................................................................... 5.3 BRAKE ACCUMULATOR.......................................................................................................... 5.4 COMPONENTS............................................................................................................................. 5.2 HYDRAULIC OIL HEATING PROCEDURE................................................................................ 5.13 MAIN RELIEF VALVE PRESSURE SETTING............................................................................ 5.10 PILOT CIRCUIT DESCRIPTION................................................................................................... 5.7 PILOT CIRCUIT SCHEMATIC....................................................................................................... 5.8 PILOT MANIFOLD......................................................................................................................... 5.5 ASSEMBLY DIAGRAM.....................................................................................5.2, 5.6, 5.7, 5.21 OPERATING DESCRIPTION.................................................................................................... 5.5 PILOT SHUT OFF...................................................................................................................... 5.5 PILOT PRESSURE SETTINGS.................................................................................................. 5.12 PILOT SYSTEM COMPONENTS CHARGING THE ACCUMULATOR........................................................................................... 5.4 CHECKING THE PRE-CHARGE PRESSURE.......................................................................... 5.4 RELEASE PILOT SYSTEM PRESSURE...................................................................................... 5.9 TROUBLESHOOTING GUIDE PILOT SYSTEM................................................................................................... 5.20, 5.22, 5.23 UNLOADING VALVE PRESSURE SETTING.............................................................................. 5.11

Pilot System

Tigercat 718E Feller Buncher

PILOT SYSTEM COMPONENTS Oil flow for the pilot system is supplied by the fixed displacement steer pump section of the boom/steer pump. The accumulator valve provides oil to the pilot accumulator, brake accumulator, pilot manifold and steer valve. The pilot manifold supplies oil at a reduced pressure, to two joysticks, a foot control valve and ten solenoid operated control valves (within the manifold). One of the solenoid valves is used as the pilot shut off to stop the flow of pilot oil to all pilot actuated functions.

For information on the BOOM/STEER PUMP and JOYSTICK CONTROL VALVES, refer to SECTION 11 in THIS MANUAL. For a detailed description of FOOT CONTROL VALVES, refer to SECTION 8 in THIS MANUAL.

718E-018B 718E-020

ACCUMULATOR CHARGE VALVE

ACCUMULATOR CHARGE PRESSURES Machines 7180901 to 7181080 and 7181103 to 7181108: Upper Limit - 124 bar (1800 psi) Lower Limit - 87 bar (1260 psi)

THIS SECTION details the location, and operation of the accumulator charge valve, accumulators and pilot manifold (including solenoid valves).

ACCUMULATOR CHARGE VALVE

Machines 7181081 to 7181102 and 7181109 7182000: Upper Limit - 167 bar (2425 psi) Lower Limit - 117 bar (1700 psi)

The accumulator charge valve is sandwiched between the steering valve and the pilot manifold.

It controls the flow of oil to the steer valve, the pilot manifold and both the pilot and brake accumulators.

When the accumulator charge circuit ‘X’ is fully charged the unloading pilot allows flow from ‘B’ to ‘C’ ports. When the pressure in the accumulator drops to its lower limit) charging is required. At this point, pressure at port ‘A’ reaches a level below the pilot valve spring force and the cartridge shifts to block flow from ‘B’ port to ‘C’ port recharging the accumulator circuit.

OPERATING DESCRIPTION System pressure is directed to port 3 of the pressure compensator valve spool and is directed through port 4. Excess flow exits, or is bypassed at port 2. Port 1 is the load sense port.

PILOT MANIFOLD ACCUMULATOR VALVE

UNDER REAR OF CAB STEERING VALVE

718E-005

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 5.2

Tigercat 718E Feller Buncher CAVITY PLUG PLUG

PLUG

‘OR5’ PLUG

Pilot System ‘OR6’ PLUG

MAIN RELIEF VALVE

PRESSURE COMPENSATOR UNLOADING PILOT VALVE

718E-021A

ACCUMULATOR CHARGE VALVE

When the accumulator is charged to its high limit pressure at ‘A’ will reach a level above the ratio established to unseat the cartridge, the valve will open and allow flow from ‘B’ port to ‘C’ port.

When the operating pressure (pump pressure) in the system is greater than the established operating pressure of the accumulator circuit the main relief valve is forced off its seat directing the high pressure oil to flow to tank.

5.3

Pilot System

Tigercat 718E Feller Buncher

ACCUMULATORS

CHECKING THE PRE-CHARGE PRESSURE

GAS VALVE GUARD

After the accumulator has been put in service, the pre-charge pressure should be checked with the proper accumulator charging and testing device.

A detailed instruction sheet is provided with the charging and testing device.

GAS VALVE

BODY

If the gas pre-charge pressure is low, investigate the cause and correct it. Possible causes of lost pre-charge pressure are a leaking or damaged gas valve, or a damaged diaphragm.

DIAPHRAGM VALVE GUARD POPPET (SEATS AGAINST OIL PORT AFTER OIL EVACUATION)

HYDRAULIC CONNECTION

875-011

PILOT ACCUMULATOR The pilot accumulator receives pressure from the accumulator charge valve. The pilot accumulator has two functions. First, it dampens system pressure fluctuations and provides a constant pressure source for pilot manifold controlled functions. Second, it provides a stored pressure for use as an emergency reserve for functions controlled through the pilot manifold. Minimal movement of these functions is available after the engine stalls or is shut down.

ACCUMULATOR

There are two accumulators used on this machine: one for the pilot system and one for the brakes. They are both a diaphragm type accumulator and are installed pre-charged with nitrogen gas:

BRAKE ACCUMULATOR

7180901 to 7182000

The brake accumulator receives pressure from the accumulator charge valve. The brake accumulator ensures that the brake remains responsive at all times by maintaining an optimum pilot pressure to the brake foot control valve. The brake accumulator holds sufficient pressure for up to 5 brake applications after the engine stalls or is shut down. Beyond this the pressure drops substantially. For further information about BRAKES refer to SECTION 9 of THIS MANUAL.

- Pilot: 48.2 bar (700 psi) 7180901 to 7181080 and 7181103 to 7181108 - Brake: 52 bar (750 psi) 7181081 to 7181102 and 7181109 to 7182000 - Brake: 62 bar (900 psi) The gas pressure in the pilot accumulator should be checked if the pilot system exhibits repeated and frequent charging cycles. Refer to CHECKING PRE-CHARGE PRESSURE in THIS SECTION.

WARNING

Hydraulic circuits with accumulators store hydraulic oil under pressure and may remain pressurized after the engine is turned off.

Prior to performing any maintenance or system modifications, exercise CAUTION to bleed off any stored system pressure by depressing the brake pedal at least 50 times and operating all controls several times. Refer to RELEASE PILOT SYSTEM PRESSURE in THIS SECTION for this procedure.

WARNING The accumulator must not be altered in any way. Do not weld or machine the pressure vessel. Use only NITROGEN for charging accumulators, never use oxygen or air due to risk of explosion.

CHARGING THE ACCUMULATOR The accumulator can be charged with the proper charging and testing device. A detailed instruction sheet is provided with the charging and testing device.

5.4

Tigercat 718E Feller Buncher PILOT MANIFOLD

Pilot System Pilot oil then passes through the pilot relief valve.

The relief valve is set higher than the pressure reducing valve and diverts pilot oil back to tank if the reducing valve fails to limit the pilot pressure.

The pilot manifold is mounted under the rear wall of the cab and supplies pilot oil at a reduced pressure to the following circuits: • • • • • • • • • • • • •

Steer joystick Clamp(s) foot pedal Boom joystick Clamp Pedal # 2 Port Front Axle differential lock Parking Brake Speed/Creep joystick Rear Axle differential lock Accumulator arm(s) open Accumulator arm(s) close Flexxaire Fan Pull (FWD) Flexxaire Fan Push (REV) Pilot Shut-Off

To adjust the pressure reducing and the relief valves first loosen the jam nut, then to lower the pressure value screw OUT (counter-clockwise) the adjusting screw or, to raise the pressure value screw IN (clockwise) the adjusting screw.

Tighten jam nut to lock this setting. For complete pressure setting instructions, refer to PILOT PRESSURE SETTINGS in THIS SECTION.

(P3A) Port (P3B) Port (P3C) Port (C1) Solenoid-SV1 (C2) Solenoid-SV2 (C3) Solenoid-SV3 (C4) Solenoid-SV4 (C5) Solenoid-SV5 (C6) Solenoid-SV6B (C7) Solenoid-SV6A (C8) Solenoid-SV7A (C9) Solenoid-SV7B Solenoid-SV8

The solenoid operated pilot shut off control valve (SV8) blocks pilot oil to the solenoid valves (SV1 - SV6) and outlet ports (P3A-P3C) when either of the cab doors are open. This will prevent the machine from being operated accidentally or in the case of an operator leaving the machine in an emergency. When the cab doors have been closed, and the pilot reset switch has been turned on, the pilot shut off solenoid is energized and pilot oil is allowed to flow to the outlet ports (P3AP3C) and solenoid operated pilot valves (SV1SV6). All functions controlled through the pilot manifold will respond to the operator’s movement of the function controls. Refer to PILOT SYSTEM SHUT OFF in SECTION 2 of the OPERATOR’S MANUAL.

OPERATING DESCRIPTION The pilot manifold consists of a manifold block into which, a pressure reducing valve, a pressure relief valve and a pilot shut off solenoid valve (SV8) are installed. Ten solenoid operated control valves (SV1 to SV8) are installed to control outlet ports C1 to C9. A “quick connect” type test port fitting is installed in port ‘P’ for attaching a pressure gauge during hydraulic setup procedures.

The solenoid operated pilot valves control the position of the spool valves or pistons to which they are hydraulically connected. When a solenoid operated pilot valve is energized, usually by a switch in the cab, pilot oil is directed to shift the spool or piston in the function control valve.

Oil is supplied to the pilot manifold from the steer pump via the accumulator charge valve and the pilot accumulator. The pilot accumulator provides a constant pressure source for the pilot controls.

For a more detailed description of accumulators and their operation, refer to ACCUMULATORS in THIS SECTION.

When the solenoid is de-energized, a spring forces the spool back to the neutral position, blocking the pressure side and opening the pilot line back to tank. There are no adjustments on the solenoid valves.

Oil entering the pilot manifold passes through the pilot pressure reducing valve. The pilot pressure reducing valve reduces and maintains the pilot pressure on the outlet side of the pilot manifold to a pre-set value.

PILOT PRESSURE REDUCING VALVE 38 BAR (550 PSI)

PILOT SHUT OFF SOLENOID VALVE (SVG8)

INSTALL A 0 - 1000 PSI. GAUGE ON “P” PORT

PILOT PRESSURE RELIEF VALVE 52 BAR (750 PSI) 718E-009

PILOT MANIFOLD 5.5

718E-010

Pilot System

Tigercat 718E Feller Buncher

REAR OF CAB

PILOT PRESSURE TEST PORT 69 BAR (1000 PSI) GAUGE

PILOT VALVE MANIFOLD PILOT PRESSURE REDUCING VALVE ACCUMULATOR VALVE

STEERING VALVE

PILOT PRESSURE RELIEF VALVE

UNLOADER RELIEF VALVE MAIN RELIEF VALVE PORT RELIEF VALVES NOT ADJUSTABLE

NOTES: 1. TORQUE SEQUENCE FOR TIE RODS: STEP TORQUE 20, 41, 61 N-m (15,30,45 FT-LBS) 2. TIE ROD TO BE INSTALLED WITH LONGER THREAD SECTION INSERTED FIRST. ACCUMULATOR TEST PORT 5000 PSI. GAUGE

718E-004 718E-005 718E-015

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 5.6

Tigercat 718E Feller Buncher PILOT CIRCUIT DESCRIPTION

Pilot System Oil entering the pilot manifold passes through the pilot pressure reducing valve, pilot pressure relief valve and pilot shut off solenoid. The pilot shut off solenoid valve (in the pilot manifold) is energized when the cab doors are CLOSED and the pilot reset switch is ON. When the pilot shut off solenoid valve (SV8) is energized, pilot oil can flow to the outlet ports (P3A-P3C) and the solenoid operated pilot valves (SV1-SV6) in the pilot manifold.

The boom/steer pump supplies oil to the pilot manifold via the accumulator charge valve.

The accumulator charge valve controls the flow of oil to the pilot manifold, the steer valve, and to both the pilot and brake accumulators.

The pilot accumulator provides a constant pressure source for the pilot manifold controlled functions. The brake accumulator provides optimum pilot pressure to the brake foot control at all times. The pilot accumulator and brake accumulator are connected in series for charging.

A check valve is located between the two accumulators. This check valve prevents the pilot system from using brake accumulator pressure, but allows the brake accumulator to use pilot accumulator pressure.

Pilot oil from the outlet ports (P3A-P3C) supplies the steering joystick control valve, boom joystick control valve and clamp foot control valve. These three valves are manually operated pilot valves.

When a solenoid operated pilot valve is energized, by a switch in the cab, pilot oil is directed to shift the spool in the corresponding control valve and operate the required function.

In the case of front and rear differential lock, the pilot oil leaving the pilot manifold operates clutch packs in the axles to lock the differentials.

BOTTOM VIEW ‘P2’ TEST PORT

718E-008

FRONT VIEW 718E-003

TOP VIEW

718E-007

‘P’ TEST PORT

‘GP’ TEST PORT

REAR VIEW

718E-006

REAR VIEW

718E-013

STEERING / ACCUMULATOR / PILOT VALVE - PORT AND COMPONENT LOCATIONS 5.7

Pilot System

718E-023

Tigercat 718E Feller Buncher

PILOT CIRCUIT 5.8

Tigercat 718E Feller Buncher RELEASE PILOT SYSTEM PRESSURE

Pilot System

WARNING Hydraulic circuits with accumulators store hydraulic oil under pressure and may remain pressurized after the engine is turned off.

Prior to beginning any service work on the pilot system or the braking system, pressure must first be released to prevent injury from oil spraying.

The following steps must be followed to release pressure: 1. Close both doors. Turn ignition switch to ON position. Do not start the engine. Press pilot reset switch.

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

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

NOTE: With both of the differential locks ON when the engine is OFF pilot oil stored in the accumulator is vented to tank. This drains the pilot system accumulator only.

Pumping the brake foot pedal vents both the pilot system accumulator and the brake accumulator to tank. This is necessary to relieve the pilot pressure trapped in the brake accumulator by the brake check valve.

3. Pressure may remain in the system after completing all of the above steps. Use caution when loosening hydraulic connections.

5.9

Pilot System

Tigercat 718E Feller Buncher

MAIN RELIEF VALVE PRESSURE SETTING

4. Ensure that the hydraulic oil temperature is between 49°C-60°C (120°F-140°F).

The following procedure deals with setting up the accumulator charge circuit, i.e., the main relief valve (RV2) pressure on the accumulator charge valve.

5. Start the engine and set the throttle control to IDLE. 6. Steer the machine either to the left or to the right so that the machine comes up against the articulation lock bar and hold until step 7 is completed.

WARNING

ACCUMULATOR VALVE

To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

1. Park machine on level ground, lower felling head to the ground and set parking brake ON. Install articulation lock bar, block wheels and stop engine.

‘RV2’ MAIN RELIEF VALVE

WARNING

7. Adjust the main relief valve (RV2) so that the pressure at port ‘P2’ is 172 bar (2500 psi).

Turning the main relief valve’s adjustment screw IN (clockwise) will increase the setting of the valve while turning the adjustment screw OUT (counter-clockwise) will decrease the setting of the valve.

Hydraulic circuits with accumulators store hydraulic oil under pressure and may remain pressurized after the engine is turned off.

2. Prior to beginning any service work on the pilot system or the braking system, pressure must first be released to prevent injury from oil spraying. Refer to RELEASE PILOT SYSTEM PRESSURE procedure, outlined earlier in this section.

8. Leave parking brake ON, shut off the engine.

Remove all pressure gauges and wipe up any excess oil from test port area.

9. Remove the articulation lock bar and place it in the storage position.

‘GP’ TEST PORT

‘P’ TEST PORT

‘P2’ TEST PORT

REAR VIEW

UNLOADING PILOT VALVE

EC1

718E-013

3. Connect a 0-200 bar (0-3000 psi) pressure gauge to the test port at ‘GP’ of the pilot manifold. The pilot manifold is located under the back edge of the cab.

5.10

Tigercat 718E Feller Buncher UNLOADING VALVE PRESSURE SETTING

Pilot System 4. Ensure that the hydraulic oil temperature is between 49°C - 60°C (120°F – 140°F).

The following procedure deals with setting up the unloading circuit, i.e., the accumulator unloading pressures on the accumulator charge valve.

5. Start the engine and set the throttle control to IDLE. Engage both the front and rear differential locks.

ACCUMULATOR VALVE

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

1. Park machine on level ground, lower felling head to the ground and set parking brake ON. Install articulation lock bar, block wheels and stop engine.

‘RV2’ MAIN RELIEF VALVE

6. Adjust the unloading pilot valve (UP1) on the accumulator charge valve so that the minimum pressure at port ‘P2’ is set to specifications (see below) and the maximum pressure at port ‘P2’ is set to specifications (see below). Turning the unloading pilot valve’s adjustment screw IN (clockwise) will increase the setting of the valve while turning the adjustment screw OUT (counterclockwise) will decrease the setting of the valve.

WARNING Hydraulic circuits with accumulators store hydraulic oil under pressure and may remain pressurized after the engine is turned off.

2. Prior to beginning any service work on the pilot system or the braking system, pressure must first be released to prevent injury from oil spraying. Refer to RELEASE PILOT SYSTEM PRESSURE procedure, outlined earlier in this section.

7. Leave parking brake ON, disengage both the front and rear differential locks and shut off the engine. Remove all pressure gauges and wipe up any excess oil from test port area.

‘GP’ TEST PORT

‘P’ TEST PORT

‘P2’ TEST PORT

REAR VIEW

UNLOADING PILOT VALVE

ACCUMULATOR CHARGE PRESSURES Machines 7180901 to 7181080 and 7181103 to 7181108: Upper Limit - 124 bar (1800 psi) Lower Limit - 87 bar (1260 psi) Machines 7181081 to 7181102 and 7181109 to 7182000: Upper Limit - 167 bar (2425 psi) Lower Limit - 117 bar (1700 psi)

EC1

718E-013

3. Connect a 0-200 bar (0-3000 psi) pressure gauge to the test port at ‘P2’ of the pilot manifold. The pilot manifold is located under the back edge of the cab.

5.11

Pilot System

Tigercat 718E Feller Buncher

PILOT PRESSURE SETTINGS

4. Ensure that the hydraulic oil temperature is between 49°C -60°C (120°F -140°F).

The following procedure deals with setting up the PILOT circuit, i.e., the pilot manifold relief valve and the pressure reducing valve.

5. Turn the pressure reducing valve adjusting screw (top of manifold) all the way IN (clockwise).

6. Turn the relief valve adjusting screw (front of manifold) OUT (counter-clockwise) until the spring tension is completely relieved, then turn adjusting screw IN (clockwise) one full turn .

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

7. Start the engine and set the throttle control to IDLE. NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

1. Park machine on level ground, lower felling head to the ground and set parking brake ON. Install articulation lock bar, block wheels and stop engine.

8. Adjust the relief valve pressure to *specifications.

9. Adjust the pressure reducing valve pressure to *specifications.

WARNING

10. Leave parking brake ON, shut off the engine.

Remove all pressure gauges and wipe up any excess oil from test port area.

Hydraulic circuits with accumulators store hydraulic oil under pressure and may remain pressurized after the engine is turned off.

2. Prior to beginning any service work on the pilot system or the braking system, pressure must first be released to prevent injury from oil spraying. Refer to RELEASE PILOT SYSTEM PRESSURE procedure, outlined earlier in this section.

3. Connect a 0-70 bar (0-1000 psi) pressure gauge to the test port at ‘P’ of the pilot manifold. The pilot manifold is located under the back edge of the cab.

PILOT PRESSURE REDUCING VALVE 38 BAR (550 PSI)

PILOT SHUT OFF SOLENOID VALVE (SVG8)

INSTALL A 0 - 1000 PSI. GAUGE ON “P” PORT

PILOT PRESSURE RELIEF VALVE 52 BAR (750 PSI) 718E-009

PILOT MANIFOLD 5.12

718E-010

Tigercat 718E Feller Buncher

Pilot System

HYDRAULIC OIL HEATING PROCEDURE

5. Adjust throttle to FULL. 6. Operate clamp closed for 15 seconds, then stop for 5 seconds.

Heat the hydraulic oil in the machine in preparation for hydraulic set-up procedures as follows:

IMPORTANT: DO NOT leave the machine while heating the oil, as overheating of engine or oil can cause serious damage.

1. Park the machine on level ground, parking brake ON and felling head down. Install articulation lock bar, stop engine and block wheels.

7. Repeat step 6 while monitoring hydraulic oil temperature until the temperature is between 49°C -60°C (120°F -140°F). This process will take 20 to 30 minutes depending on ambient air temperature.

TEST PORT

8. Ensure that hydraulic oil is between 49°C -60°C (120°F -140°F), then proceed to required hydraulic set-up procedure.

IMPORTANT: The temperature rises quickly when setting relief valves. Remove the cardboard blocking the oil cooler if necessary to maintain the proper temperature. Do not pass oil over relief valves for longer than 5 seconds at a time during set-up procedures. Damage to valves can occur from excessive heat.

MAIN RELIEF

724D-D20

BOOM VALVE

2. Connect a 0-345 bar (0-5000 psi) gauge to the inlet test port on the boom valve.

9. Return boom valve main relief to normal pressure settings using clamp closed function, refer to PRESSURE SETTINGS in SECTION 18.

3. Start the engine and adjust throttle to IDLE. Place a sheet of cardboard in front of the oil cooler side of the heat exchanger. The radiator must remain uncovered to prevent engine overheating.

4. Adjust the boom valve main relief to 138 bar (2000 psi) using the clamp close function.

5.13

Pilot System

Tigercat 718E Feller Buncher

718E-024

HYDRAULIC CIRCUIT CAB

718E-089

PILOT MANIFOLD AND ACCUMULATOR MANIFOLD SCHEMATIC 5.14

Tigercat 718E Feller Buncher

718E-026

Pilot System

HYDRAULIC CIRCUIT FRONT CHASSIS - SAW ATTACHMENT 5.15

Pilot System

718E-096

Tigercat 718E Feller Buncher

HYDRAULIC CIRCUIT FRONT CHASSIS - SHEAR ATTACHMENT 5.16

Tigercat 718E Feller Buncher

Pilot System

718E-025A

HYDRAULIC CIRCUIT REAR CHASSIS - 7180901 TO 7181080 AND 7181103 TO 7181108 5.17

Pilot System

Tigercat 718E Feller Buncher

718E-025A

HYDRAULIC CIRCUIT REAR CHASSIS - 7181081 TO 7181102 AND 7181109 TO 7182000 5.18

Tigercat 718E Feller Buncher

Pilot System DOUBLE SOLENOID VALVE PRESSURE REDUCING VALVE

MAIN RELIEF VALVE

718E-063

SINGLE SOLENOID VALVE

718E-064

PILOT RELIEF VALVE ACCUMULATOR UNLOADER VALVE

718E-058

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 5.19

Pilot System

Tigercat 718E Feller Buncher

TROUBLESHOOTING GUIDE - PILOT SYSTEM WARNING! – Refer to RELEASE PILOT SYSTEM PRESSURE in THIS SECTION before removing or replacing any of the valves as indicated in the following procedures.

3. Problem – Pilot pressure is below the 550 psi requirement.

3.1. Possible Cause – The pressure reducing valve (PR1) in the pilot manifold could be set too low.

1. Problem – Inability to build operating pressure (pump pressure).

3.1.1. Solution - Refer to PILOT PRESSURE SETTINGS in THIS SECTION for the procedure on the proper method for setting the pressure relief valve in the pilot manifold.

1.1 Possible Cause – The main relief valve (RV2) could have malfunctioned.

1.1.1 Solution – Replace the main relief valve (RV2).

3.2. Possible Cause – The pressure relief valve (RV1) in the pilot manifold could be set too low.

2. Problem – Inability to build pilot pressure.

3.2.1. Solution - Refer to PILOT PRESSURE SETTINGS in THIS SECTION for the procedure on the proper method for setting the pressure relief valve in the pilot manifold.

2.1. Possible Cause – No electrical signal to coil on the pilot shut off solenoid (SV8).

2.1.1.Solution - Check pilot circuit 10 amp fuse, switches, relays and electrical wiring.

See section 6 for circuit electrical schematic, and repair as required.

4. Problem – Pilot accumulator loses pressure rapidly.

2.2. Possible Cause – The coil on the pilot shut off solenoid (SV8) could have malfunctioned.

4.1. Possible Cause – The pressure relief valve (RV1) in the pilot manifold could be set too low.

2.2.1.Solution - Replace coil on pilot shut off solenoid (SV8).

4.1.1. Solution – Refer to PILOT PRESSURE SETTINGS in THIS SECTION for the procedure on the proper method for setting the pressure relief valve in the pilot manifold.

2.3. Possible Cause - The spool in the pilot shut off solenoid (SV8) could be stuck in the blocked position.

4.2. Possible Cause – The pressure reducing valve (PR1) could have malfunctioned.

2.3.1. Solution - Replace the pilot shut off solenoid (SV8).

4.2.1. Solution - Replace the pressure reducing valve (PR1).

2.4. Possible Cause – The pressure reducing valve (PR1) could have malfunctioned.

4.3. Possible Cause – The check valve in the accumulator charge valve could have malfunctioned.

2.4.1. Solution – Replace the pressure reducing valve (PR1).

2.5. Possible Cause - The unloading pilot valve (UP1) could be stuck in the open position, thereby not allowing the accumulator to be charged.

4.3.1. Solution – Replace the check valve (CV4) in the accumulator charge valve.

4.4. Possible Cause – The unloading pilot valve (UP1) could be set too low.

2.5.1. Solution – Replace the unloading pilot valve (UP1).

4.4.1. Solution – Refer to UNLOADING VALVE PRESSURE SETTINGS in THIS SECTION for the procedure on the proper method for setting the unloading pilot valve (UP1).

2.6. Possible Cause – The pressure compensator (EC1) could have malfunctioned.

2.6.1. Solution – Replace the pressure compensator (EC1).

2.7. Possible Cause – Inability to build operating pressure (pump pressure).

2.7.1. Solution – See Problem #1 above.

5.20

Tigercat 718E Feller Buncher CAVITY PLUG PLUG

PLUG

Pilot System

‘OR5’ ‘OR6’ PLUG PLUG

‘GP’ TEST PORT

MAIN RELIEF VALVE

PRESSURE COMPENSATOR ‘P’ TEST PORT

UNLOADING PILOT VALVE

718E-021A

‘P2’ TEST PORT

ACCUMULATOR CHARGE VALVE ACCUMULATOR VALVE

EC1

REAR VIEW SV1

PR1

SV3

SV5

718E-013

SV7 PILOT MANIFOLD

‘P’ TEST PORT UNDER REAR OF CAB STEERING VALVE

718E-005

RV2

UP1

CV3

RV1

SV8

CV1

CV4

‘P2’ TEST PORT

BOTTOM VIEW

CV2

718E-008

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 5.21

SV2

SV4

SV6

Pilot System

Tigercat 718E Feller Buncher

TROUBLESHOOTING GUIDE - PILOT SYSTEM 8. Problem – No pilot pressure at the front axle differential lock.

5. Problem – With no steering requirement the operating pressure (pump pressure) does not drop lower than the accumulator pressure.

8.1. Possible Cause - The coil on the front axle differential lock solenoid (SV2) does not have electrical signal or coil could have malfunctioned.

5.1. Possible Cause – The unloading pilot valve (UP1) could have malfunctioned.

5.1.1. Solution – Replace the unloading pilot valve (UP1).

8.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the front axle differential lock solenoid (SV2).

6. Problem – Steering flow appears to be too low during operation.

6.1. Possible Cause – Pressure compensator (EC1) could have malfunctioned.

6.1.1. Solution – Replace the pressure compensator (EC1).

8.2. Possible Cause - The spool in the front axle differential lock solenoid (SV2) could be stuck in the blocked position.

6.2. Possible Cause – Main relief valve (RV2) could be set too low.

8.2.1. Solution - Replace the front axle differential lock solenoid (SV2).

6.2.1. Solution – Refer to MAIN RELIEF VALVE PRESSURE SETTINGS in THIS SECTION for the procedure on the proper method for setting the main relief valve (RV2).

9. Problem – No pilot pressure at the rear axle differential lock.

9.1. Possible Cause - The coil on the rear axle differential lock solenoid (SV5) does not have electrical signal or coil could have malfunctioned.

6.3. Possible Cause – The pilot orifice in the accumulator charge valve (OR6) could be plugged.

6.3.1. Solution – Remove the pilot orifice and check for any contaminants that could have plugged the orifice. Remove any such contaminants and re-install the pilot orifice.

9.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the rear axle differential lock solenoid (SV5).

7. Problem – No pilot pressure at clamp pedal #2 port.

9.2. Possible Cause - The spool in the rear axle differential lock solenoid (SV5) could be stuck in the blocked position.

7.1. Possible Cause - The coil on the clamp pedal solenoid (SV1) does not have electrical signal or coil could have malfunctioned.

9.2.1. Solution - Replace the rear axle differential lock solenoid (SV5).

7.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the clamp pedal solenoid (SV1).

10. Problem – No pilot pressure at the parking brake.

10.1. Possible Cause - The coil on the parking brake solenoid (SV3) does not have electrical signal or coil could have malfunctioned.

7.2. Possible Cause - The spool in the clamp pedal solenoid (SV1) could be stuck in the blocked position.

10.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the parking brake solenoid (SV3).

7.2.1. Solution - Replace the clamp pedal solenoid (SV1).

5.22

Tigercat 718E Feller Buncher TROUBLESHOOTING GUIDE - PILOT SYSTEM

Pilot System 13.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the accumulator close solenoid (SV6A).

10.2. Possible Cause - The spool in the parking brake solenoid (SV3) could be stuck in the blocked position.

10.2.1. Solution - Replace the parking brake solenoid (SV3).

11. Problem – No pilot pressure at the speed/ creep joystick.

13.2. Possible Cause - The spool in the accumulator close solenoid (SV6A) could be stuck in the blocked position.

11.1. Possible Cause - The coil on the speed/creep joystick solenoid (SV4) does not have electrical signal or coil could have malfunctioned.

13.2.1. Solution - Replace the accumulator close solenoid (SV6A).

14. Problem – No pilot pressure at the pull port of the Flexxaire fan.

11.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the speed/creep joystick solenoid (SV4).

14.1. Possible Cause - The coil on the Flexxaire fan pull solenoid (SV7A) does not have electrical signal or coil could have malfunctioned.

14.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the Flexxaire fan pull solenoid (SV7A).

11.2. Possible Cause - The spool in the speed/creep joystick solenoid (SV4) could be stuck in the blocked position.

11.2.1. Solution - Replace the speed/creep joystick solenoid (SV4).

12. Problem – No pilot pressure at the accumulator open boom valve.

14.2. Possible Cause - The spool in the Flexxaire fan pull solenoid (SV7A) could be stuck in the blocked position.

12.1. Possible Cause - The coil on the accumulator open solenoid (SV6B) does not have electrical signal or coil could have malfunctioned.

14.2.1. Solution - Replace the Flexxaire fan pull solenoid (SV7A).

15. Problem – No pilot pressure at the push port of the Flexxaire fan.

12.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the accumulator open solenoid (SV6B).

15.1. Possible Cause - The coil on the Flexxaire fan push solenoid (SV7B) does not have electrical signal or coil could have malfunctioned.

15.1.1. Solution - Check electrical circuit for blown fuse, defective joystick switch or defective wiring (see electrical schematic in section 6) and repair electrical problem or replace defective coil on the Flexxaire fan push solenoid (SV7B).

12.2. Possible Cause - The spool in the accumulator open solenoid (SV6B) could be stuck in the blocked position.

12.2.1. Solution - Replace the accumulator open solenoid (SV6B).

13. Problem – No pilot pressure at the accumulator close boom valve.

15.2. Possible Cause - The spool in the Flexxaire fan push solenoid (SV7B) could be stuck in the blocked position.

13.1. Possible Cause - The coil on the accumulator close solenoid (SV6A) does not have electrical signal or coil could have malfunctioned.

15.2.1. Solution - Replace the Flexxaire fan push solenoid (SV7B).

5.23

Pilot System

Tigercat 718E Feller Buncher

5.24

Tigercat 718E Feller Buncher SECTION 6 - ELECTRICAL, GAUGES AND ALARMS

ELECTRICAL, GAUGES AND ALARMS....................................................................................................... 6

CONTENTS - SECTION 6

ISSUE 3.0, JULY, 2015

BLINK CODES............................................................................................................................ 6.12 BLINK CODE TRANSLATION / DIAGNOSTICS............................................................... 6.13, 6.14 ELECTRICAL SCHEMATICS.........................................................................6.16, 6.17, 6.18, 6.19 FUSE AND RELAY PANEL - CAB..........................................................................6.5, 6.6, 6.7, 6.8 FUSE AND RELAY PANEL - MAIN..................................................................................... 6.9, 6.10 RELAYS AND WIRE CONNECTIONS.......................................................................................... 6.4 SENSOR, SENDER LOCATIONS............................................................................................... 6.15 WIRE COLOUR CODE CHART.................................................................................................. 6.14 WIRE CONNECTIONS - RELAYS................................................................................................ 6.4

Electrical, Gauges and Alarms

Tigercat 718E Feller Buncher

6.2

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms

ELECTRONIC CONTROL MODULE

A/C HEATER RELAYS

GREY, GREEN AND BROWN CONNECTORS

724E-037

FAN ELECTRONIC CONTROL MODULE WIRING AND CONNECTORS

FAN CONTROLLER The electronic control module for the hydraulic driven cooling fan is located on the lower front panel of the cab just inside the right cab door.

A/C HEATER RELAYS Three relays used to control the A/C and Heater functions are located on the side of the A/C Heater unit just inside the right cab door.

GREY, GREEN AND BROWN CONNECTORS 724E-038

6.3

Electrical, Gauges and Alarms RELAYS AND WIRE CONNECTIONS

Tigercat 718E Feller Buncher

GROUND JUMPER

CAB POWER (RED) BAT CAB GROUND (BLK) G57 CONTROLLER GROUND (BLK) G8

RELAY

(FRONT) HIGH SPEED FAN

RELAY

(MIDDLE) A/C AND HEATER RUN

CONNECTOR 'EZ'

RELAY

(BACK) FRESH AIR BLOWER

CONNECTOR 'AF'

GREEN

BROWN

CONNECTOR 'AN'

CONNECTOR 'AM'

CONNECTOR 'AL'

'AM' GREEN (YEL) (BLK) (YEL) (BLK)

PIN WIRE 1 277 2 17 3 256 4 275 5 46A 6 94 7 52A 8 85 9 107 10 8 11 278 12 G277,96

FDS LIGHT SIGNAL FDS SIGNAL GROUND FDS BULB/HORN TEST FDS GROUND TEST

'AF' GREY PIN A B C

WIRE H1 (YEL) J1939 CANBUS HIGH G1 (GRN) J1939 CANBUS LOW S1 (CLR) J1939 CANBUS SHIELD

'AN' GREY PIN 1 2 3 4 5 6 7 8 9 10 11 12

WIRE 47 22 88 101 140 141 143 126 127 254 255 96

(RED) IGNITION POWER (RED) FUSE BLOCK (BLK) A/C COMBO (BLK) FAN DRIVE CONTROLLER GND. (BLK) FUSE PANEL GROUND (BLK) VOLTAGE CONVERTER GND. (BLK) VOLTAGE CONVERTER GND. (BLK) INSTRUMENT GROUND (BLK) CAB HARNESS GROUND (BLK) FRONT LIGHT GROUND (BLK) REAR LIGHT GROUND

GREY

'EZ' GREY

PIN WIRE 1 263 2 G263 3 263A 4 G263A

BAT BAT1 G28 GFDC GDIL G42 G43 GPNL G2 G58 G57

G

(RED) BACK UP ALARM (RED) LOW HYD. OIL SWITCH POWER (GRN) FAN VALVE PROPORTIONAL (GRN) FAN VALVE DIRECTIONAL (YEL) STOP ENGINE LIGHT (YEL) WARNING LAMP (YEL) WAIT TO START (WHT) ENGINE SPEED DECREMENT (WHT) ENGINE SPEED INCREMENT (RED) FUEL SENSOR LEVEL (YEL) FUEL LEVEL LIGHT (BLK) HYD. OIL TEMP SENSOR

7

8

5

SAW PRES. POWER LOW HYD. OIL LEVEL FUEL VALVE PARK BRAKE SOLENOID A/C COMPRESSOR SWITCH HYD. OIL TEMPERATURE A/C OFF RELAY FUEL HEATER RELAY KEY SWITCH INPUT START SOLENOID POWER SAW SENSOR SIGNAL SENSORY GROUND

'AL' BROWN PIN 1 2 3 4 5 6 7 8 9 10 11 12

WIRE 3A 13E 15 219A 33C 36 59 35 21 -

(TAN) (RED) (RED) (RED) (TAN) (TAN) (TAN) (GRN) (TAN)

PARK BRAKE LEVER PARK BRAKE POWER JOYSTICK POWER REST. INDICATOR SWITCH POWER BUS SUPPLY DOOR INTERLOCK DRIVE PREVENT DOOR INTERLOCK SAW CONTROL CREEP MODE

9 10 11 12

CONNECTOR PIN NUMBERS 6

(RED) (YEL) (GRN) (GRN) (ORG) (YEL) (ORG) (RED) (RED) (TAN) (YEL) (BLK)

4

3

2

4

1

3

2

A

B

C

1

29682A R3

LABEL - ELECTRICAL CONNECTIONS - (INSIDE RIGHT CAB DOOR AREA) 6.4

Tigercat 718E Feller Buncher FUSES AND RELAYS

Electrical, Gauges and Alarms

724E-006

720E-002

FUSE PANEL - IN CAB

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 main control panel as shown above. The main fuse and relay panel is located in an electrical box in the engine compartment.

IMPORTANT

24 VOLT

ELECTRICAL SYSTEM 6.5

Electrical, Gauges and Alarms

724E-035

Tigercat 718E Feller Buncher

FUSE AND RELAY PANEL - CAB

LABEL - FUSE AND RELAY PANEL - CAB 6.6

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms

724E-006

718E-075

CAB FUSE AND RELAY PANEL PIN NUMBER ASSIGNMENT (VIEWED FROM REAR OF PANEL) 6.7

Electrical, Gauges and Alarms

Tigercat 718E Feller Buncher

CAB FUSE AND RELAY PANEL WIRE NUMBER CHART

1

724E-035

718E-030

To access the rear of the fuse and relay panel, remove the wing nut (1) at the top of the panel.

Pull the top of the panel outwards then tip the panel down to access the wiring and connectors.

6.8

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms

724E-036

724E-132 30369B

LABEL - MAIN FUSE AND RELAY PANEL ENGINE COMPARTMENT MAIN FUSE AND RELAY PANEL - ENGINE COMPARTMENT This main fuse and relay panel is located in an electrical box in the engine compartment on the rear wall.

6.9

Electrical, Gauges and Alarms

718E-070 30369B

Tigercat 718E Feller Buncher

MAIN FUSE AND RELAY PANEL - ENGINE COMPARTMENT PIN NUMBER AND WIRE ASSIGNMENT CHART 6.10

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms

FAN CONTROL

CAUTION

ELECTRONIC CONTROLLER

Before placing the fan switch in the CLEAN (PURGE) position make sure that there are no personnel on either side of the machine in the area where the fan will expel debris.

When the switch is pressed momentarily to the CLEAN (PURGE) position, the control module will signal the pilot control valve to reverse the blade pitch to maximun -30 degrees reversing the air flow for 10 seconds. The control module will also turn the air conditioning system OFF for as long as the fan is in the CLEAN (PURGE) mode.

724E-025

ELECTRONIC FAN CONTROLLER WIRING

720D-052

FAN ELECTRONIC CONTROL MODULE

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.

724E-004

FAN SWITCH

When the switch is in the AUTO position the fan blade is at maximum (30°) pitch (pull mode).

Every ten minutes the fan control module will automatically reverse pitch the fan blades (AUTO CLEAN/REVERSE or push mode) for 10 seconds to clean debris off the intake side of the cooler assembly and then return to the pull mode.

When the switch is in the FULL ON (OVERRIDE) position, the fan will run at maximum blade pitch angle for cooling regardless of coolant, air intake or oil temperatures. The AUTO CLEAN/REVERSE feature will not function in the FULL ON position.

6.11

Electrical, Gauges and Alarms

Tigercat 718E Feller Buncher

ELECTRONIC CONTROL MODULE BLINK CODES

GREEN LED

The electronic control module has two LED lights on the front top left side of the controller.

A GREEN LED is used to indicate that power is ON and the controller is activated. The RED LED is used to provide a visual warning in the form of BLINK CODES whenever the controller senses a fault in the system.

RED LED

The chart on the following pages can be used for BLINK CODE TRANSLATION AND DIAGNOSTICS.

724E-018

6.12

ELECTRONIC CONTROL MODULE

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms

BLINK CODE TRANSLATION / DIAGNOSTICS FAULT CODE

"RED LED"

DESCRIPTION

EFFECT

(Flash Bit Sequence)

(Fault Location)

(Only when fault code is active)

11

•

1 sec

•

12

•

1 sec

••

13

•

1 sec

•••

14

•

1 sec

••••

15

•

1 sec

Attachment Pump Displacement Control Coil Attachment pump will turn off and will not turn on.

Incorrect Cutter Mode Selected

Attachment pump will not turn on.

Saw Blade Overspeed

Attachment pump will turn off and will not turn on.

Saw Blade Speed Sensor Fault

Attachment pump will turn off and will not turn on.

Attachment Pump Reverse Displacement Control Coil

M726D closed loop attachment circuit - If running in reverse attachment pump will turn off and will not run reverse, no affect on forward operation.

Intermittent Saw Blade Proximity Sensor Fault

Saw blade will retract for a specified length of time and will not stop when it passes the blade proximity sensor or blade will not fully retract automatically. Manual retract button may be used to fully retract saw blade.

•••••

16

•

1 sec

••••••

Saw Pressure Sensor Fault

Electronic Saw gauge in cab will not operate correctly.

17

•

1 sec

•••••••

Cutter Control Valve Pilot Solenoid Fault

Attachment pump will turn off and will not turn on.

18

•

1 sec

••••••••

Intermittent Saw Blade Extend Valve Coil

Intermittent saw blade may not extend. Controller will continue to send current to extend valve coil.

19

•

1 sec

• • • • • • • • • Intermittent Saw Blade Retract Valve Coil

Intermittent saw blade may not retract. Controller will continue to send current to retract valve coil.

21

••

1 sec

•

22

••

1 sec

••

23

••

1 sec

•••

24

••

1 sec

••••

41

42

43

••••

••••

••••

1 sec

1 sec

1 sec

•

••

Main Pump Horsepower Control Coil Fault

Engine anti-stall may not function correctly.

Pilot Pressure Sender Fault

Engine will not automoatically idle down during times of inactivity

Parameter Fault

Anti-stall and auto-idle may not function correctly

Saw Cut Control Coil Fault

Saw cut function may not work correctly.

A/C OFF Output Relay is out of operating Range

Fan runs at full speed forward. Fan will not automatically reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Pitch Forward Coil is out of operating range

Fan will continue in increase pitch until is running at full pitch, will not decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Forward Coil is out of operating range

Fan will try to continue to perform as normal. If the fault is detected more than 5 times in 10 minutes; fan will attempt to run at full speed forward, not automatically reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Proportional Coil is out of operating range.

Fan will try to continue to perform as normal. If the fault is detected more than 5 times in 10 minutes; fan will run at full speed forward, not automatically reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Pitch Reverse Coil is out of operating range

Fan will continue in increase pitch until is running at full pitch, will not decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Reverse Coil is out of operating range

Fan will try to continue to perform as normal. If the fault is detected more than 3 times in 10 minutes; fan will run at full speed forward, not automatically reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

•••

44

••••

1 sec

••••

45

••••

1 sec

•••••

46

••••

1 sec

••••••

47

••••

1 sec

•••••••

48

••••

1 sec

••••••••

Hydraulic Oil Temperature Sender out of range

Fan runs at full speed forward and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display. Fan will not automatically reverse.

Engine will not automatically idle down

Fan Reverse Frequency Potentiometer

Fan performs normal operation but will be default to automatically reverse every 20 minutes.

J1939 CAN BUS Fault

Fan runs at full speed forward controller and will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display. Fan will not automatically reverse.

Engine Coolant Overheat Condition

Fan runs at full speed forward. Fan will not automatically reverse.

Fan runs at full speed forward. No effect on automatic reverse. Engine diagnostic display reads fault code SPN 441 FMI 0

Hydraulic Overheat Condition Fan runs at full speed forward. No effect on automatic reverse. Engine diagnostic display reads fault code SPN 1638 FMI 0

NOTES : 1) To clear fault codes from controller, turn master disconnect switch "off", wait 15 secs, and turn "on". If fault persists see Possible Cause/Solution.

2) If multiple faults are present a 5 second delay will separate the Fault Code Sequences.

"GREEN LED" ON Steady indicates System is Activated/ON "RED LED" and "GREEN LED" will flash momentarily when master disconnect is switched from "off" to "on"

6.13

Electrical, Gauges and Alarms

Tigercat 718E Feller Buncher

BLINK CODE TRANSLATION / DIAGNOSTICS FAULT POSSIBLE CAUSE / SOLUTION CODE

718E

720D/ 724D

(To diagnose fault)

720E/ 724E/ 726E

726D

M726D M726E T726E

11

Current is out of operating range. Check connections between attachment pump coil and controller. Check coil ground connections.

x

x

12

Mode selector switch is in the incorrect position or the electrical boom connector is not connected. Place mode selector switch in the correct mode or connect boom eletrical connector and turn cutter on. Check connections between attachment and controller. Check resistance of attachment ID connector inside attachement.

x

x

13

Saw blade speed has exceeded the saw max speed set point. Check saw speed and adjust BODC screw on saw motor if necessary. Check flow to saw motor in saw mode.

x

x

14

Speed sensor has malfunctioned or blade has not turned for an extended period of time with the cutter on. Check that saw blade turns when cutter is on.

Check connection between speed sensor and controller. Check speed sensor ground. Check speed sensor for proper installation and operation.

x

x

Current is out of operating range. Check connections between attachment pump reverse coil and controller. Check reverse coil ground connections.

x

15

Intermittent saw blade proximity sensor has failed, come out of adjustment or become disconnected. Check sensor and sensor position, remove debris, check sensor connections.

16

Pressure transducer has malfunctioned or has become disonnected and no signal is present. Check the signal wire from the transducer. When the transducer is given 5V sensory power, 0.5 V should be present at the signal wire at 0 psi.

17

Current is out of operating range. Check connections between cutter control pilot solenoid and controller. Check cutter control solenoid ground connections.

18 19 21

x

x

x

x

x

x

x

Current is out of operating range. Check connections between intermittent saw blade extend valve coil (locted in intermittent saw head) and controller.

Check solenoid ground connections.

Current is out of operating range. Check connections between intermittent saw blade retract valve coil (locted in intermittent saw head) and controller.

Check solenoid ground connections.

x x

Current is out of operating range. Check connections between attachment pump coil and controller. Check coil ground connections.

23 24

Current is out of operating range. Check connections between saw cut valve section coil and controll. Check coil ground connections.

41

Current is out of operating range. Check connections between relay and controller. Check relay ground connections. Check relay.

x

Current is out of operating range at the fan pitch forward coil. Check connections between the coil and the controller. Check coil ground connections.

x

42

Current is out of operating range at the fan forward coil. Check connections between the forward coil of fan pump and the controller. Check coil ground connections.

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

Current is out of operating range at fan valve proportional coil. Check connections between proportional coil of fan valve and controller. Check ground connections.

Current is out of operating range at the fan pitch reverse coil. Check connections between the coil and the controller. Check coil ground connections.

234/ 250B/ T250B

x

Voltage is out of operating range. Check connections between sensor and controller. Verify that sensor has been calibrated using the service tool. Replace pressure sensor if necessary.

Parameter set points are out of operating range. Check settings with service tool.

22

CS234

x

43 Current is out of operating range at the fan reverse coil. Check wire connections between the reverse coil of fan pump and the controller (720/724D). Check connections at reverse coil of fan valve and the controller (724E/726D/M726D). Check ground connect

44

Resistance is out of operating range at hydraulic oil temprature sender. Check connection between the hydraulic temperature sender and controller and replace hydraulic oil temperature sender if necessary.

45

Voltage is out of operating range at the reverse frequency potentiometer or it is uncalbirated. To calibrate pot- Turn potentiometer fully out (+), wait 5 secs, then turn potentiometer fully in (-), wait 5 sec. Turn out (+) 1/4 turn to reset automatic reverse frequency.

x

x

46

Engine J1939 not present or Faulted. Check that J1939 backbone is in good condition, all resistors and connectors are properly connected.

x

47

Coolant has reached/exceeded Overheat Set Point. Decrease coolant temp to below overheat set point.

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x 48

x

Hydraulic Oil has reached/exceeded Overheat Set Point. Decrease hydraulic oil temp to below overheat set point. x

x

x

Tigercat wire colour code chart applicable to all products manufactured by Tigercat Industries Inc. COLOUR Red Black White Blue Purple

Tan

Yellow Grey Brown Green

FUNCTION EXAMPLE Power.......................................................(fused and unfused) Ground Engine control..........................................(fuel shut-off, start aid) Propulsion Control....................................(transmission/reverser solenoids) Monitor, electrical and mechanical systems.................................(air cleaner, alternator, wheel speed, engine speed) Electrical and electromechanical control........................(park brake, alternator excitation) / (power door motor, backup alarm) Monitors...................................................(flow, pressure, temperature, level) Standard monitor system.........................(logic module to monitor) Lights Electro-hydraulic control...........................(pilot solenoids)

Orange

Accessories..............................................(horn, A/C, heater)

6.14

Tigercat 718E Feller Buncher

Electrical, Gauges and Alarms SWITCH BACK-UP ALARM

SWITCH PILOT SHUT OFF LEFT CAB DOOR

SWITCH PILOT SHUT OFF RIGHT CAB DOOR WARNING LIGHTS AND CONTROL PANEL DISPLAY MODULE

SWITCH BATTERY DISCONNECT (ON SEAT PEDESTAL)

PILOT MANIFOLD

HORN, SAFETY

SENDER ENGINE COOLANT LEVEL FOR WARNING LIGHT/HORN

CAB CONTROL PANEL - FUSE AND RELAY PANEL

BATTERIES

724E-132

BACK-UP ALARM 718E-061

SENDER HYDRAULIC OIL TEMPERATURE CONTROL

ELECTRICAL BOX

SWITCH - HYDRAULIC OIL LEVEL FOR WARNING LIGHT/HORN

SENSOR & SWITCH LOCATIONS 6.15

718E-066

Electrical, Gauges and Alarms ELECTRICAL SCHEMATIC - SHEET 1 OF 4

30665B R7 718E-071

6.16

Tigercat 718E Feller Buncher

Tigercat 718E Feller Buncher ELECTRICAL SCHEMATIC - SHEET 2 OF 4

30665B R7 718E-072

6.17

Electrical, Gauges and Alarms

Electrical, Gauges and Alarms ELECTRICAL SCHEMATIC - SHEET 3 OF 4

30665B R7 718E-073

6.18

Tigercat 718E Feller Buncher

Tigercat 718E Feller Buncher ELECTRICAL SCHEMATIC - SHEET 4 OF 4

30665B R7 718E-074

6.19

Electrical, Gauges and Alarms

Electrical, Gauges and Alarms

Tigercat 718E Feller Buncher

6.20

Tigercat 718E Feller Buncher SECTION 7 - ENGINE

ENGINE.........................................................................................................................................................7

CONTENTS - SECTION 7

ISSUE 3.0, JULY, 2015

CHARGE AIR COOLER..................................................................................................................... 7.8 CIRCUIT DESCRIPTION ENGINE.......................................................................................................................................... 7.4 COOLING SYSTEM CHARGE AIR COOLER................................................................................................................. 7.8 COOLANT FLOW DURING OPERATION...................................................................................... 7.7 FILLING THE SYSTEM WITH COOLANT...................................................................................... 7.7 PRECLEANER OPERATION................................................................................................................................... 7.9 SERVICE........................................................................................................................................ 7.9 START CIRCUIT DIAGRAMS AT REST......................................................................................................................................... 7.5 RUN AND DRIVE............................................................................................................................ 7.6 RUN, NO DRIVE............................................................................................................................. 7.6 START............................................................................................................................................ 7.5 STARTING SYSTEM DESCRIPTION................................................................................................ 7.3

Engine

Tigercat 718E Feller Buncher

7.2

Tigercat 718E Feller Buncher

Engine

STARTING CIRCUIT For detailed engine information, refer to the engine manufacturer's manual.

For engine starting and stopping procedures refer to STARTING ENGINE and STOPPING ENGINE in SECTION 2 of the OPERATOR’S MANUAL. The parking brake must be in the ON position to allow the engine to start. The engine is started by turning the key to the START position and then releasing it to the RUN position after the engine starts.

Refer to START CIRCUIT DIAGRAMS in THIS SECTION. 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 and hydraulically released.

718E-105

PARKING BRAKE SWITCH

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 key switch is turned 'OFF'. See also INSTRUMENT PANEL for more details regarding parking brake switch operation.

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

7.3

Engine

Tigercat 718E Feller Buncher FUSES AND RELAYS

ENGINE CIRCUIT DESCRIPTION With the parking brake ON, the parking brake switch is closed and the drive enable relay (4) is energized through wire 11.

726D-004

KEY SWITCH

718E-105

KEY AND PARKING BRAKE SWITCHES

When the key is turned to the START position, voltage is supplied to the start circuit through wire 2 to the contacts of drive enable relay (4) and wire 4 to the start relay (5).

When the parking brake is OFF, the drive enable relay (4) is de-energized, voltage is not available in wire 4 and therefore the engine cannot be started. This prevents accidental starting of the engine when the parking brake is OFF. It should be noted that with the engine running, the parking brake ON and the drive enable relay energized, voltage is not available in wire 3 to the drive prevent relay (6). Because of this, driving the machine is still not possible until both cab doors are closed and the pilot reset switch is pressed.

Voltage is supplied through wire 23 and 24 to the coil of the start relay (5), which closes and supplies voltage through wire 8 to the coil of the remote start solenoid relay. The start solenoid relay closes and supplies voltage through wire 467 to close the contacts of the start solenoid and supply battery power to the starter to turn the engine.

To set machine in drive mode, place parking brake OFF to de-energize the drive enable relay (4) and allow voltage to flow to drive prevent relay (6) along wire 3. Close both doors and press the pilot reset switch. This will energize the pilot lock relay (7), de-energize the drive enable relay (4) and allow voltage to flow through wire 36 to energize the drive prevent valve solenoid and allow pilot oil to the drive pedals.

MASTER DISCONNECT RELAY

MASTER DISCONNECT RELAY

For schematic diagrams, showing various stages of the start circuit, refer to START CIRCUIT DIAGRAMS - CUMMINS 'B' ENGINE OPTION in THIS SECTION. 724E-039

7.4

Tigercat 718E Feller Buncher

Engine

START CIRCUIT DIAGRAMS START CIRCUIT - AT REST

724E-028

START CIRCUIT - START

724E-029

7.5

Engine

Tigercat 718E Feller Buncher START CIRCUIT DIAGRAMS

START CIRCUIT - RUN, NO DRIVE

724E-030

START CIRCUIT - RUN AND DRIVE

724E-031

7.6

Tigercat 718E Feller Buncher ENGINE COOLING SYSTEM

Engine Additional coolant stored in the surge tank flows slowly down the shunt hose to the water pump inlet replacing the air removed from the cooling system.

COOLANT FLOW DURING OPERATION The water pump circulates coolant through the radiator, engine oil cooler, the engine block and cylinder head. If the thermostat is closed, coolant is returned to the water pump through a bypass inside the engine.

FILLING THE SYSTEM WITH COOLANT The coolant is added through the filler neck in the surge tank. This coolant fills the bottom radiator hose at the water pump through the shunt hose and then fills the radiator from the bottom upwards. Air is displaced through the vent tube to the surge tank. As the radiator is filled, coolant flows through the water pump and engine oil cooler to fill the engine. Coolant will flow out the top radiator hose through the thermostat bypass and into the engine once the radiator has filled.

The engine vent discharges air directly from the engine to the surge tank.

The thermostat opens when the coolant reaches operating temperature. Then the coolant flows across the radiator core to the outlet and back to the water pump through the bottom radiator hose.

A surge tank is located above the radiator. A small vent tube is connected between the surge tank and the thermostat housing. The anti-freeze/ water solution used in the cooling system always contains small amounts of gas produced by combustion leakage. This gas must be vented to the outside to prevent cavitation of the engine water pump and to promote efficient heat transfer between the engine block and the coolant. These gases separate from the coolant in the radiator top tank and are carried up through the vent tube where they collect in the surge tank and eventually discharge through the pressure cap.

When the engine has been run up to operating temperature and the thermostat has opened, any remaining air is purged through the vent tube and the engine vent. The system will then require more coolant to fully top off both the engine and the radiator.

The engine vent discharges air directly from the top of the engine to the surge tank.

SURGE TANK

RAD CAP VENT TUBES

FLOW OF COOLANT WITH ENGINE RUNNING AT OPERATING TEMPERATURE AND THERMOSTAT OPEN

CHARGE AIR COOLER

OIL COOLER SHUNT LINE

RAD

718E-033B

RADIATOR HOSES 718-042A

7.7

RADIATOR

Engine CHARGE AIR COOLER (CAC)

Tigercat 718E Feller Buncher MAINTAINING THE CHARGE AIR COOLER Inspect charge air cooler for dirt and debris blocking fins. Inspect the charge air piping and hoses for leaks holes, cracks or loose connections. Tighten hose clamps as required.

The charge air cooler is an air to air heat exchanger which cools turbocharged engine intake air. This cooling makes the intake air more dense for improved combustion, reduced emissions and increased efficiency of the engine.

Other advantages of a charge air cooler include increased fuel economy and reduced wear of engine components due to lower intake manifold temperatures. The charge air cooler is located above the oil cooler and radiator sections of the heat exchanger. Refer also to ENGINE MANUFACTURER'S MANUAL.

Refer to SCHEDULED MAINTENANCE in SECTION 3 of THIS MANUAL and CLEANING THE A/C CONDENSER AND COOLING ASSEMBLY in SECTION 2 of the OPERATOR'S MANUAL. NOTE: If the engine experiences a turbocharger failure or other event where oil or debris enters the charge air cooler the charge air cooler must be cleaned. If debris cannot be removed the charge air cooler must be replaced. Refer to ENGINE MANUFACTURER'S MAINTENANCE MANUAL.

AIR FLOW DURING OPERATION Intake air from the engine air cleaner enters the turbocharger where the air is pressurized. The pressurized air flows from the turbocharger to the charge air cooler where it is cooled by ambient air flow. The cooler pressurized air flows from the charge air cooler to the intake manifold of the engine.

Refer also to COOLING SYSTEM AND ENGINE FAN in SECTION 10 of THIS MANUAL.

AIR FLOW WITH ENGINE RUNNING AT OPERATING TEMPERATURE

DENSE COOL AIR FROM CHARGE AIR COOLER FLOWING TO INTAKE MANIFOLD

CHARGE AIR COOLER

LESS DENSE HOT AIR FROM TURBOCHARGER ENTERING CHARGE AIR COOLER

OIL COOLER

TO INTAKE MANIFOLD

RADIATOR

AIR FROM TURBOCHARGER

718E-033A

7.8

Tigercat 718E Feller Buncher PRECLEANER - ENGINE AIR INTAKE

Engine SERVICE

The precleaner is the first defence against foreign objects entering the air intake to the air cleaner filter elements and the engine. This unit draws its air supply through the perforated door of the precleaner compartment where the course outer screen blocks the passage of large particles such as leaves, twigs or pine needles. Inside the precleaner is a turbine fan which spins due to the passage of air over its blades. The blades direct large particles to the outside of the casing, where they are blown out the exhaust port area.

The main air stream continues into the air filter assembly for removal of fine dust and particles.

AS THE AIR SPINS, CENTRIFUGAL FORCE SEPARATES FOREIGN MATERIALS FROM THE CLEAN AIR

Under normal conditions, the outer screen and the precleaner should be checked and cleaned every 8 hours of any debris such as leaves, needles, dirt and twigs.

CONTAMINANTS ARE BLOWN OUT OF SPECIAL DISCHARGE PORTS BY HIGH VELOCITY, AIR POWERED ROTOR

CHECK SPINNER BLADES FOR WEAR. REPLACE IF WORN.

THE PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN TURBO 2

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER

724E-040

PRECLEANER COMPARTMENT

The complete precleaner unit must be removed for inspection and cleaning whenever the air cleaner primary filter element is replaced. This is done by loosening the gear clamp behind the unit and pulling it loose. Check the blades for wear and dirt build-up and clean them or replace the spinner assembly if blades are worn. Check the exhaust port area (narrow slots around outside of casing) for dirt and particle build-up. Clean the entire unit. When installing the unit, ensure that the precleaner outlet tube is inserted into the tube attached to the inner wall properly and tighten the gear clamp.

PRECLEANER OPERATION

7.9

Engine

Tigercat 718E Feller Buncher

7.10

Tigercat 718E Feller Buncher SECTION 8 - DRIVE

DRIVE...........................................................................................................................................................8

CONTENTS - SECTION 8

ISSUE 3.0, JULY, 2015

AXLES 7180901 TO 7181080 AND 7181103 TO 7181108.................................................................. 8.24 AXLE LUBRICATION........................................................................................................... 8.26 BRAKE BLEEDING.............................................................................................................. 8.26 BRAKE LINING INSPECTION (REAR AXLE ONLY)........................................................... 8.25 DIFFERENTIAL AND DIFFERENTIAL LOCKS.................................................................... 8.25 DRAINING THE AXLES....................................................................................................... 8.26 FILLING AXLES, ALTERNATIVE METHOD......................................................................... 8.27 FILLING THE AXLES........................................................................................................... 8.26 REAR AXLE OSCILLATION SHIM....................................................................................... 8.29 SERVICE BRAKES (REAR AXLE ONLY)............................................................................ 8.25 7181081 TO 7181102 AND 7181109 TO 7182000.................................................................. 8.31 AXLE LUBRICATION........................................................................................................... 8.32 7204614, 7204720 TO 7204767 AND 7204779 TO 7182000 REAR AXLE OSCILLATION SHIM....................................................................................... 8.33 CIRCUIT DESCRIPTION SINGLE MOTOR 2-SPEED TRANSMISSION........................................................................... 8.3 CIRCUIT DIAGRAM, DRIVE SINGLE MOTOR 2-SPEED TRANSMISSION........................................................................... 8.7 DRIVE MOTOR PRESSURE SETTINGS AND ADJUSTMENTS................................................ 8.16 DRIVE PEDAL PILOT VALVE..................................................................................................... 8.10 DRIVE PREVENT VALVE........................................................................................................... 8.11 DRIVE PUMP PRESSURE SETTINGS AND ADJUSTMENTS SINGLE MOTOR 2-SPEED TRANSMISSION......................................................................... 8.14 DRIVE SHAFT, FRONT, INSTALLATION.................................................................................... 8.21 HYDROSTATIC DRIVE MOTOR DESCRIPTION.......................................................................................................................... 8.8 HYDROSTATIC DRIVE SYSTEM SINGLE MOTOR 2-SPEED TRANSMISSION........................................................................... 8.3 PARKING BRAKE OPERATION................................................................................................. 8.13 PRESSURE SETTING CHART................ SEE SECTION 3 - LUBRICATION AND MAINTENANCE PRESSURE SETTINGS AND ADJUSTMENTS SINGLE MOTOR 2-SPEED TRANSMISSION DRIVE PUMP....................................................................................................................... 8.14 MOTOR MINIMUM DISPLACEMENT.................................................................................. 8.18 MOTOR POR....................................................................................................................... 8.16 TEST DRIVE SINGLE MOTOR 2-SPEED TRANSMISSION......................................................................... 8.12 TRANSMISSION 2-SPEED (SINGLE MOTOR).......................................................................... 8.19 SHIFT LEVER.......................................................................................................................... 8.20 WHEEL INSTALLATION.............................................................................................................. 8.35

Drive

Tigercat 718E Feller Buncher

8.2

Tigercat 718E Feller Buncher

Drive

LOW PRESSURE RETURN SWASHPLATE, AXIAL PISTON DRIVE PUMP

BENT AXIS PISTON DRIVE MOTOR

TO VEHICLE DRIVE

FROM DIESEL ENGINE

HIGH PRESSURE SUPPLY

724D-44

TYPICAL CONTINUOUS CLOSED LOOP HYDRAULIC CIRCUIT SINGLE MOTOR (2-SPEED TRANSMISSION)

HYDROSTATIC DRIVE SYSTEM SINGLE MOTOR 2-SPEED TRANSMISSION A hydraulic system is termed closed loop when the hydraulic oil returning from the motor is fed straight back to the pump without first returning to tank. When the machine is travelling forward, one side of the closed loop is a high pressure supply while the other side is a low pressure return. The supply and return will alternate from side to side of the closed loop as the direction of travel of the vehicle goes from forward to reverse.

The primary components of the single motor two speed transmission hydrostatic drive system are a hydraulic pump and a hydraulic motor connected together by two hydrostatic hoses.

The pump converts the mechanical power of the diesel engine into hydraulic power. This high pressure flow of hydraulic oil is then transmitted to the hydraulic motor through a connecting hose.

The motor then reconverts the hydraulic power back into the mechanical power used to propel the machine. Low pressure hydraulic oil flow then returns from the motor to the pump through the other connecting hose thereby completing a continuous closed loop hydraulic circuit.

Hydrostatic drives are used because they offer enhanced operator control of vehicle speed and tractive effort. As well hydrostatic drive systems give flexibility in the positioning of components within the machine when compared to mechanical drive systems.

8.3

Drive

Tigercat 718E Feller Buncher

DRIVE PUMP

volume and direction of oil flow from the piston pump is determined by the angle of the tiltable swashplate. When the swashplate is stroked to a maximum displacement angle, the piston pump will produce maximum flow in one direction in the closed loop. As the swashplate is de-stroked, the flow smoothly decreases until there is no flow at an angle of zero (0°). Continuing to angle the swashplate past this neutral position steplessly reverses the direction of flow from the piston pump.

The hydrostatic drive pump is mounted at the top centre position of the pump drive gearbox.

The input drive shaft of the pump is connected directly to the output of the gearbox. The gearbox is driven directly by the diesel engine through a drive coupling.

The hydrostatic drive pump is actually two separate hydraulic pumps mounted in a common case and driven by the same input drive shaft.

The primary pump is a variable displacement, swashplate, in line axial piston type pump. The

TO CHARGE PRESSURE FILTER

'A' POR VALVE ADJUSTING SCREW 5 MM ALLEN KEY 1 1/16" WRENCH

'B' POR VALVE ADJUSTING SCREW 5 MM ALLEN KEY 1 1/16" WRENCH

GAUGE TEST PORT (M3) • QUICK CONNECT

TO DRIVE FOOT CONTROL VALVE

PRESSURE PORT 'A'

PRESSURE PORT 'B' CHARGE PRESS. RELIEF • 1 1/16" WRENCH • 1/2" SOC. WRENCH

SUCTION FROM TANK

GAUGE TEST PORT 'M1' • PORT SIZE - 06 JIC

718E-019

CHARGE PUMP

DRIVE PUMP 8.4

GAUGE TEST PORT 'M2' • PORT SIZE - 06 JIC

Tigercat 718E Feller Buncher SYSTEM PRESSURE PORT 'B'

SLIDE BLOCK

Drive CONTROL CYLINDER

SERVO ARM

SWASHPLATE CONTROL VALVE FEED BACK SWASHPLATE CRADLE BEARING

DRIVE SHAFT

CHARGE PUMP 724D-01

LOCK NUT

SYSTEM PRESSURE PORT 'A'

SWASHPLATE LEVELLER

SWASHPLATE

DRIVE PUMP malfunctions or does not respond quickly enough to high pressure surges.

PRESSURE LIMITER CHECK HIGH PRESSURE POPPET VALVE VALVE RELIEF/CHECK POPPET POPPET

The POR valve prevents continuous dumping of high pressure oil across the piston pump high pressure relief valves. This eliminates unnecessary heating of the oil and protects the pump and motors during rapid acceleration or deceleration and drive system stalls. For this reason the high pressure relief valves are automatically set to a higher pressure than the POR valve setting and are nonadjustable. The high pressure relief valves always dump oil from the high pressure to the low pressure side of the closed loop, keeping the hydraulic oil within the closed loop.

PRESSURE LIMITER PRESSURE LIMITER BYPASS ADJUSTING SCREW POPPET SEAT ACTUATOR 724D-26 CROSS SECTION OF POR (MULTI-FUNCTION VALVE)

The hydrostatic piston pump is equipped with two pressure override (POR) valves at ports A and B to protect the closed loop hydrostatic drive components from excessive pressure.

These POR valves are also referred to as multifunction valves. When the tractive effort requirements of the vehicle are demanding, pressure on the high side of the closed loop can reach maximum. At this pressure the POR valve signals the swashplate control valve to de-stroke the swashplate, reducing piston pump flow and maintaining system pressure at the POR valve setting. Each POR valve incorporates an internal nonadjustable high pressure relief valve. The two high pressure relief valves at ‘A’ and ‘B’ ports are intended only to act as pressure limiting safety devices in the event that the POR valve

The secondary pump of the drive pump is a fixed displacement, internal gerotor type that provides charge oil (make-up oil) for the hydrostatic pump and motors in the closed loop system. The charge pump also provides pilot oil to the drive foot controls.

8.5

Drive

Tigercat 718E Feller Buncher DRIVE FOOT CONTROL VALVE CHARGE PRESSURE FILTER

SWASH PLATE CONTROL VALVE

HIGH PRESSURE RELIEFS 'A' AND 'B'

•

•

•

P.O.R VALVES 'A' AND 'B'

•

•

CHARGE PUMP

•

• CHARGE PUMP RELIEF

• •

GAUGE TEST PORT 'A' 724E-092B

• CONTROL CYLINDER

GAUGE TEST PORT 'B'

DRIVE PUMP SCHEMATIC

OPERATING DESCRIPTION The drive foot control valve directs oil from the charge pump and sends a pressure signal to shift the spool in the swashplate control valve.

This changes the position of the control cylinder, which is directly connected to the swashplate of the piston pump. The angle and direction that the swashplate moves determines the speed and direction of travel of the vehicle. The angle and direction that the swashplate moves is directly proportional to the position of the drive foot control. When neither of the drive foot controls are depressed, pilot oil is not supplied to the swashplate. The swashplate therefore remains in the neutral position and no oil is pumped by the piston pump.

de-energizing the drive enable relay and energizing the drive prevent valve. With the drive prevent valve energized, drive foot control oil can be directed to either the forward or reverse side of the pump swashplate control valve as required. With the drive prevent valve de-energized, drive foot control oil is directed to both sides of the pump swash plate control valve balancing the pressure on the control valve, the drive pump displacement control valve does not move and the pump swashplate angle remains at zero (0°).

The charge pump continuously introduces oil from the hydraulic tank into the hydrostatic drive system via a charge pressure filter. The charge pressure relief valve maintains a constant pilot pressure for use by the swashplate control system.

Excess charge pressure oil is relieved by the pump's charge pressure relief valve in conjunction with the loop flushing relief valve on the drive motors, this excess is dumped back into the case of the piston pump. Loop make up oil goes to the low pressure side of the closed loop to replenish losses due to internal leakage in the hydrostatic pump and motor. The flow of make-up oil acts as a cooling fluid for the piston pump and motors to ensure peak hydrostatic drive performance and long service life. The charge pressure filter ensures that only clean charge pump oil is introduced into the closed loop hydrostatic circuit and swashplate control system.

Should the charge pressure filter become clogged with debris, charge pump flow is diverted to tank thus preventing the entry of unfiltered charge oil into the hydrostatic system and control system.

For pressure setting procedures Refer to DRIVE PUMP AND MOTOR PRESSURE SETTINGS AND ADJUSTMENTS in THIS SECTION.

The drive foot control valve only functions when the parking brake is in the OFF position. This drive prevent circuit will not allow the machine to be driven with the parking brake ON. A switch in the parking brake circuit activates and deactivates the drive prevent valve. When the parking brake is in the OFF position, the switch contacts are open, 8.6

Tigercat 718E Feller Buncher

718E-054

Drive

DRIVE CIRCUIT - SINGLE MOTOR 2 -SPEED TRANSMISSION 8.7

Drive

Tigercat 718E Feller Buncher

HYDROSTATIC DRIVE MOTOR SINGLE MOTOR 2-SPEED TRANSMISSION The hydrostatic drive motor is mounted directly to the input of the two speed, manually shifted transmission. The output of the transmission is directly connected to the front and rear axles via the driveshaft. The hydrostatic drive motor is a variable displacement, bent axis, axial piston type.

High pressure oil from the hydrostatic pump enters the motor via port A or port B depending on the direction of travel required. This oil is then directed to a set of pistons inside the motor rotating group cylinder housing. These pistons push against the back of the output shaft at an angle, causing the shaft to rotate.

718E-017

SINGLE DRIVE MOTOR 2-SPEED TRANSMISSION

Only when the pressure in the high pressure side of the closed loop exceeds the motor POR preset level does the displacement of the motor begin to increase. The point at which the spool in the displacement control valve begins to move and stroke the piston to maximum displacement is known as "Begin of displacement regulation" (motor POR) See note**.

The piston motor is made variable by changing the angle of the motor rotating group cylinder housing relative to the end of the output shaft. This angle determines the size or displacement of the motor. The displacement determines the output speed and torque of the motor. Increasing the displacement, increases the torque output while reducing the output speed of the motor. Reducing the displacement reduces the torque and increases the speed.

As the motor displacement automatically increases, the machine speed automatically slows but the motor is able to drive the machine up steeper slopes and to travel on rougher or wetter terrain. As the pressure in the high pressure side of the closed loop falls below the motor POR pressure, the motor displacement automatically returns to the smallest displacement and the machine speeds up.

The displacement of the motor is changed by an internal control cylinder which receives high pressure oil from the motor pressure override valve (POR). The hydrostatic drive motor normally stays at the smallest displacement in order to drive the machine as fast as possible.

MINIMUM DISPLACEMENT ADJUSTING SCREW

PORT 'M1'

ROTATING GROUP

'A' PORT 'B'

PORT 'A'

DRIVE SHAFT PORT 'X'

PORT 'G'

MAXIMUM DISPLACEMENT ADJUSTING SCREW BEGIN OF STROKE (MOTOR 'POR') ADJUSTING SCREW

VIEW 'A' AQ012-G

SINGLE DRIVE MOTOR - (160CC SIZE) 8.8

AQ012-F

Tigercat 718E Feller Buncher

Drive

FLUSHING VALVE

Vg MIN

CONTROL CYLINDER

Vg MAX

NOTE** The term "begin of stroke set point" or "pressure override set point" can also be known as "begin of displacement regulation" or "begin of regulation" or "begin of displacement" or "motor POR". In this manual it will be referred to as MOTOR POR.

MOTOR POR VALVE

FROM PEDALS AND SPEED CONTROL

FROM PUMP

720D-048

FROM PUMP

DRIVE MOTOR SCHEMATIC

The MOTOR POR set point must be correctly set for the system to function properly. Refer to DRIVE MOTOR PRESSURE SETTINGS in THIS SECTION .

A minimum displacement adjusting screw on the outside of the motor housing limits the maximum speed of the motor.

WARNING: Improper adjustment of Minimum displacement adjusting screw can result in motor and transmission failure due to overspeeding.

When installing a new motor always ensure stroke limiting screw is set correctly. Refer to SET MOTOR MINIMUM DISPLACEMENT, in this section.

A flushing valve is incorporated into the motor.

This valve provides a regulated flow of oil from the low pressure side of the loop in the motor case.

This action reduces the possibility of particle build up in the loop by providing a continuous change of oil, it also assists with cooling. This valve is factory set and requires no adjusting.

If terrain conditions demand maximum tractive effort at all times, the hydrostatic drive system has a creep capability. The pilot system's creep solenoid valve directs pilot oil to the motor’s 'POR' spool. The 'POR' spool shifts to direct control oil to the control cylinder. This holds the hydrostatic drive motor in the maximum displacement position and maximum tractive effort is continuously available.

8.9

Drive

Tigercat 718E Feller Buncher

DRIVE PEDAL PILOT VALVE

OPERATING DESCRIPTION 5

1

4 3 2 8

'P' PORT

AU013-1

1

2

P AU004

WORK PORTS 1, OR 2

SPOOL ARRANGEMENT

AU013-2

In the neutral position the foot pedal is held centreed by return spring (4).

T

When the pedal (1) is operated, the plunger (5) is pushed against the return spring (4).

DRIVE PILOT VALVE

At the same time the regulating spool (2) is moved through the regulating spring (3).

This pilot valve is a manually operated directional valve and operates on the same principal as a direct operating pressure reducing valve.

When the regulating stroke begins, there is a connection from port 'P' via hole (8) in the spool and work ports 1 and 2 in the base of the valve, to the swashplate control valve on the drive pump.

Operated by foot, this valve directs oil pressure* provided by the drive charge pump, to the swashplate control valve on the drive pump to drive the machine either forward or reverse.

Pressure provided by the drive charge pump at ports 1 and 2 is directly proportional to the position of the operator's foot on the foot pedal and the regulating spring characteristic.

8.10

Tigercat 718E Feller Buncher

Drive

DRIVE PREVENT VALVE The drive prevent valve is located under the cab.

This solenoid operated spool valve prevents the machine from being driven either forward or reverse when the parking brake is ON. UNDERSIDE OF CAB

DRIVE PREVENT VALVE

DRIVE PREVENT VALVE

724D-D24

SOLENOID AND CONNECTOR

SM-29

P1

P2

SPOOL SECTION VALVE BLOCK PORT 1

PORT 2

V-04

DRIVE PREVENT VALVE

OPERATING DESCRIPTION When the solenoid valve is de-energized (parking brake ON) the spool cross connects the forward and reverse pilot lines causing drive charge pump oil to return to tank in the event the foot control is operated. This prevents the foot control from supplying pressure to the drive pump displacement controller.

When the solenoid valve is energized (parking brake OFF), the spool in the drive prevent valve shifts and blocks the cross connection between the forward and reverse pilot line. This allows the foot control (forward or reverse) to send drive charge pump pressure* to the drive pump displacement controller.

8.11

Drive

Tigercat 718E Feller Buncher

TEST DRIVE

DRIVE MOTOR PRESSURE OVERRIDE (POR) CONTROL PRESSURE:

SINGLE MOTOR 2-SPEED TRANSMISSION

1. Shift the transmission to HIGH RANGE, turn ON both front and rear differential locks.

Ensure creep switch is OFF. Set throttle control to FULL.

Note: This procedure is for a Sauer-Danfoss pump and Rexroth single motor installation.

This test drive will verify the following: 1.

2.

3.

4.

5.

6.

7.

8.

2. Drive the machine FORWARD at FULL SPEED. Apply the foot brake to slow the machine. The pressure at 'M1' on the drive pump will begin to rise.

Drive motor pressure override.

Engine horsepower audit Transmission low and high Ranges.

Creep function.

Front and rear differential lock functions.

Saw recovery time.

Boom functions Parking brake operation.

3. When the 'M1' gauge on the DRIVE PUMP reads 255 bar (3700 psi.), the pressure at the 'M1' gauge on the DRIVE MOTOR should rise to 138 - 179 bar (2000 - 2600 psi), pause for a moment, then spike to over 207 bar (3000 psi).

Install a 0-350 bar ( 0 - 5,000 psi.) gauge at the 'M1' port of the DRIVE MOTOR, and a 0-700 bar (0 - 10,000 psi.) gauge at the 'M1' port of the DRIVE PUMP.

Note: If these results cannot be obtained, refer to DRIVE MOTOR PRESSURE SETTINGS AND ADJUSTMENTS in THIS SECTION.

NOTE: Fasten these gauges so that they can be viewed from the operator’s seat in the cab.

ENGINE HORSEPOWER AUDIT:

Fasten your seat belt and move the machine to a suitable test area, where it can be safely driven at full speed for approximately 46 m (150 ft).

1. Install the articulation lock bar to prevent the machine from steering.

IMPORTANT: Shifting gears while machine is moving will result in transmission damage.

Shift gears only when machine is stationary.

Slight movement of the steering joystick may be used to aid shifting. Do not press drive pedals to 'nudge' machine when shifting.

2. Set the throttle control to FULL. Verify the tachometer reading at high idle 2350 ± 25 rpm 3a. Leave the THROTTLE control set to FULL. 3b Turn A/C switch OFF and set FAN speed to FULL ON (OVERRIDE).

IMPORTANT: Foot brake must only be applied for 5 -10 seconds followed each time by a minimum 20 second cool down period. Failure to do so will result in 'burn out' of the rear axle brake.

GAUGE TEST PORT 'M1'

GAUGE TEST PORT 'M1' • PORT SIZE - 06 JIC

718E-032A

718E-019

SINGLE DRIVE MOTOR 2-SPEED TRANSMISSION 8.12

DRIVE PUMP

Tigercat 718E Feller Buncher

Drive

3c. Operate the ACCUMULATOR CLOSE function and STEER the machine.

4. Turn only the rear differential lock switch ON. While steering the machine, both rear wheels should slide instead of rotating.

Front wheels should still rotate.

4. While doing the above, carefully drive the machine FORWARD and apply the foot brake to develop a reading of 255 bar (3700 psi.) pressure at the 'M1' gauge on the DRIVE PUMP.

SAW MOTOR POR CONTROL PRESSURE, Tigercat Saws: 1. Install saw guard and raise felling head 6 inches off ground.

5. Observe the engine rpm while doing the above. The engine should lug down to 19702150 rpm

2. Set throttle control FULL.

Note: This test may have to be done a few times to get a proper reading.

CAUTION Ensure that all personnel are clear of the saw head.

TRANSMISSION LOW AND HIGH RANGES: 1. Bring machine to a full stop, apply foot brake, set throttle to IDLE and shift to HIGH RANGE.

3. Turn saw ON. 4. For 5500, 5600 and 5700 wide kurf series saws: Observe saw pressure gauge visible through cab window, pressure should rise to 248 bar (3600 psi) for about 13 seconds, drop to 214 bar (3100 psi) for about 11 seconds and then drop to 1200 - 1800 psi. as saw reaches full rpm From FULL STOP to FULL rpm should take 28 seconds.

5, For 5000 narrow kurf series saws: saw pressure gauge should rise to 248 bar (3600 psi) for about 8 seconds, drop to 214 bar (3100 psi) for about 9 seconds and then drop to 83 - 124 bar (1200 - 1800 psi) as saw reaches full rpm From FULL STOP to FULL rpm should take 17 seconds.

NOTE: Refer to the Tigercat BUNCHING SAWS OPERATING AND SERVICE MANUAL for setup and servicing procedures.

BOOM FUNCTIONS Test all boom functions for proper operation (lift, tilt, accumulating arms, clamp arms).

CHECKING PARKING BRAKE FOR PROPER OPERATION The machine is equipped with a hydraulic parking brake, there is no adjustment. Park machine on a slight grade, when activated the brake should hold the machine. When the brake is deactivated the machine should begin to roll down the grade.

Refer to SECTION 9 of THIS MANUAL for adjusting procedure and additional information on brakes.

2. Operate the machine at FULL throttle and FULL forward drive pedal. Speed should be 3.8 seconds for 5 wheel revolutions.

3. Bring machine to a full stop, apply foot brake, set throttle to IDLE and shift to LOW RANGE. 4. Operate the machine at FULL throttle and FULL forward drive pedal. Speed should be 10.6 seconds for 5 wheel revolutions.

CREEP FUNCTION 1. Shift transmission to LOW RANGE, turn the creep switch ON, set throttle to FULL, drive machine FORWARD at FULL SPEED. Speed should be 41.0 seconds for 5 wheel revolutions. Gauge at motor 'M1' port should read ZERO (0).

2. Turn creep switch OFF, shift to high range, keep at FULL throttle, apply FULL forward drive pedal. Speed should be 14.7 seconds for 5 wheel revolutions.

DIFFERENTIAL LOCKS: 1. Bring machine to a full stop, set throttle to IDLE, ensure both front and rear differential lock switches are turned OFF. Steer machine without depressing drive pedal.

All wheels should rotate as machine is being steered. Steer several times, check all wheels.

2. Turn only the front differential lock switch ON. While steering the machine, both front wheels should slide instead of rotating. Rear wheels should still rotate.

3. Turn front differential lock switch OFF.

8.13

Drive

Tigercat 718E Feller Buncher

DRIVE PUMP PRESSURE SETTINGS AND ADJUSTMENTS

NOTE: Monitor oil temperature closely, if cardboard is being used to block the oil cooler it should be removed if the temperature starts to rise above normal. The operator should be instructed to press the pedal for 5 seconds and then to release the pedal for 5 seconds to prevent overheating of the valve by the hydraulic oil as it passes over the relief valve in the next procedures. Adjustments are made during the time the pedal is pressed.

1 1/4" Wrench 19 mm Wrench 1 1/16" Wrench 10 mm Wrench 1/2" Soc. Wrench 5 mm Allen key

3 mm Allen key 1. Park machine on level ground, lower felling head to the ground.

2. Ensure that the hydraulic oil temperature is between 49°C -60°C (120°F -140°F). Refer to HYDRAULIC OIL HEATING PROCEDURE in SECTION 5 of THIS MANUAL. 3. Set parking brake ON. 4. Put machine in HIGH GEAR.

11. With the aid of an assistant, hold down the brake pedal and while depressing the FORWARD foot pedal, set the pump POR valve 'A' to *specifications, gauge at 'M1'.

NOTE: The machine should not be able to move while in HIGH gear with the brake pedal depressed.

WARNING Serious injury could result if transmission is not in HIGH gear. With the transmission in LOW gear, the vehicle will be able to move when setting the pressures. Machine must remain stationary during this procedure.

Adjustment of this POR valve, also referred to as a multi-function valve, is accomplished by loosening the smallest lock nut on the valve with the 19 mm wrench and inserting the 5 mm allen key into the pressure adjusting screw. Turn clockwise to increase pressure value and counterclockwise to decrease. After adjustment hold adjusting screw in place and tighten lock nut.

5. Install articulation lock bar and stop engine.

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

5 MM ALLEN KEY ON ADJUSTING SCREW

6. On the drive pump connect the following gauges: • 0 - 700 bar (0-10000) psi to ports 'M1' and 'M2' • 0 - 70 bar (0-1000 psi) to the "capped" test port at the TEE connection from port 'M3' 7. Start the engine and set throttle to 1800 rpm NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

8. Set pump charge pressure to *specifications (M3).

9. Set engine throttle control to 2200 rpm 10. Depress the BRAKE pedal and set the parking brake in the OFF position. Ensure that the CREEP switch is in the OFF position.

(NOTE: The hydrostatic drive system will not operate if the parking brake is not FULLY OFF.)

724D-27

19MM WRENCH ON LOCK NUT

ADJUSTING PUMP POR VALVE

LOCK NUT PRESSURE LIMITER CHECK HIGH PRESSURE POPPET VALVE VALVE RELIEF/CHECK POPPET POPPET

PRESSURE LIMITER BYPASS ADJUSTING SCREW ACTUATOR 724D-26

8.14

PRESSURE LIMITER POPPET SEAT

CROSS SECTION OF POR (MULTI-FUNCTION VALVE)

Tigercat 718E Feller Buncher

Drive Refer to previous step for adjustment procedure.

CAUTION

13. Set the parking brake ON and shut off the engine.

The machine should not be able to move while the brake pedal is depressed.

14. Remove all pressure gauges and reinstall all plugs and caps.

12. With the aid of an assistant, hold down the brake pedal and while depressing the REVERSE foot pedal, set the pump POR valve 'B' to *specifications, gauge at 'M2'.

NOTE: The machine should not be able to move while in HIGH gear with the brake pedal depressed

TO CHARGE PRESSURE FILTER

'A' POR VALVE ADJUSTING SCREW

'B' POR VALVE ADJUSTING SCREW

5 MM ALLEN KEY 1 1/16" WRENCH

5 MM ALLEN KEY 1 1/16" WRENCH

TO CREEP VALVE

GAUGE TEST PORT (M3) • QUICK CONNECT PRESSURE PORT 'A'

PRESSURE PORT 'B' CHARGE PRESS. RELIEF • 1 1/16" WRENCH • 1/2" SOC. WRENCH

SUCTION FROM TANK

GAUGE TEST PORT 'M1' • PORT SIZE - 06 JIC

718E-019

CHARGE PUMP

DRIVE PUMP 8.15

GAUGE TEST PORT 'M2' • PORT SIZE - 06 JIC

Drive

Tigercat 718E Feller Buncher

DRIVE MOTOR PRESSURE SETTINGS AND ADJUSTMENTS MOTOR POR

5. Install articulation lock bar and stop engine.

WARNING

TOOLS REQUIRED: 1 1/4" Wrench 1 1/16" Wrench 1/2" Socket Wrench

19 mm Wrench 10 mm Wrench 5 mm Allen key 3 mm Allen key

To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

6. On the drive pump connect the following gauges:

1. Park machine on level ground, lower felling head to the ground.

•

2. Ensure that the hydraulic oil temperature is between 49°C -60°C (120°F -140°F). Refer to HYDRAULIC OIL HEATING PROCEDURE in SECTION 5 of THIS MANUAL.

• •

3. Set parking brake ON.

0 - 700 bar (0-10000 psi) to pump ports 'M1' and 'M2' 0 -70 bar (0-1000 psi) to the "capped" test port at the TEE connection from pump port 'M3' 0 - 350 bar (0-5000 psi) to motor port 'M1'

Place the pump 'M1' and the motor 'M1' gauges close together (at back, close to pump) as they must be watched carefully at the same time during the next steps.

4. Put machine in HIGH GEAR.

WARNING Serious injury could result if transmission is not in HIGH gear. With the transmission in LOW gear, the vehicle will be able to move when setting the pressures. Machine must remain stationary during this procedure.

7. Start the engine and set throttle to 1800 rpm 8. Set pump charge pressure to *specifications (M3).

9. Set engine throttle control to FULL.

MINIMUM DISPLACEMENT ADJUSTING SCREW

PORT 'M1'

ROTATING GROUP

'A' PORT 'A'

PORT 'B' DRIVE SHAFT MAXIMUM DISPLACEMENT ADJUSTING SCREW

PORT 'X' PORT 'G'

BEGIN OF STROKE (MOTOR 'POR') ADJUSTING SCREW

VIEW 'A' AQ012-G

SINGLE DRIVE MOTOR - (160CC SIZE) 8.16

AQ012-F

Tigercat 718E Feller Buncher

Drive If the spike at motor 'M1' occurs after the pump 'M1' gauge passes *specifications, the motor POR adjusting screw must be turned IN.

10. Depress the BRAKE pedal and set the parking brake in the OFF position. Ensure that the CREEP switch is in the OFF position.

(NOTE: The hydrostatic drive system will not operate if the parking brake is not FULLY OFF.)

NOTE: This is a sensitive adjustment. Large changes in the gauge reading will be noticed with only a small movement of the adjusting screw. Pressure will change by 34.5 bar (500 psi) by turning the screw only 1/8 of a turn.

CAUTION The machine should not be able to move while the brake pedal is depressed.

14. Once the screw is locked down, recheck to see that the 'M1' gauge (on motor) reaches 138 - 179 bar (2000 - 2600 psi) and spikes to over 207 bar (3000 psi) at exactly the same time as the 'M1' gauge (on pump) reaches *specifications.

11. It is necessary to temporarily adjust the FORWARD pump POR. With the aid of an assistant, hold down the brake pedal and while depressing the FORWARD foot pedal, set the pump POR valve 'A' to 207 bar (3000 psi), gauge at 'M1'.

15. Reset the FORWARD pump POR. With the aid of an assistant, hold down the brake pedal and while depressing the FORWARD foot pedal, set the pump POR valve 'A' to *specifications, gauge at 'M1'.

NOTE: The machine should not be able to move while in HIGH gear with the brake pedal depressed.

NOTE: The machine should not be able to move while in HIGH gear with the brake pedal depressed.

Adjustment of this POR valve, also referred to as a multi-function valve, is accomplished by loosening the smallest lock nut on the valve with the 19 mm wrench and inserting the 5 mm allen key into the pressure adjusting screw. Turn clockwise to increase pressure value and counterclockwise to decrease. After adjustment hold adjusting screw in place and tighten lock nut.

Adjustment of this POR valve, also referred to as a multi-function valve, is accomplished by loosening the smallest lock nut on the valve with the 19 mm wrench and inserting the 5 mm Allen key into the pressure adjusting screw. Turn clockwise to increase pressure value and counterclockwise to decrease. After adjustment hold adjusting screw in place and tighten lock nut.

12. Set engine throttle to IDLE.

16. Set the parking brake ON, and shut off the engine.

13. With the aid of an assistant, hold down the brake pedal and while depressing the FORWARD foot pedal

17. Remove all pressure gauges and reinstall all plugs and caps.

Slowly turn the pump POR screw IN to increase the system pressure and watch for the point where the pressure at 'M1' (on motor) increases from zero to 138 - 179 bar (2000 - 2600 psi) and then rapidly spikes to over 207 bar (3000 psi).

When this happens, the 'M1' gauge (on pump) should read motor POR *specifications If the spike at 'M1' on motor does not occur when 'M1' on pump is at *specifications, the motor POR adjustment must be corrected.

If the pressure at motor 'M1' spikes to over 207 bar (3000 psi) before the pump 'M1' gauge reaches *specifications, the motor POR adjusting screw must be backed OUT.

8.17

Drive

Tigercat 718E Feller Buncher

MOTOR MINIMUM DISPLACEMENT SINGLE MOTOR 2-SPEED TRANSMISSION

WARNING

This adjustment need only be made after verifying that: (A) The motor POR and the charge pressure are both set correctly. See PREVIOUS PROCEDURE. (B) If the machine failed the DRIVE TEST, Refer to TOP SPEED CONTROL TEST in THIS SECTION.

To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

1. Park the machine on level ground, lower felling head to the ground and set parking brake ON. Install articulation lock bar an shut off engine.

IMPORTANT!

• When installing a new or rebuilt motor, ensure minimum displacement screw is set correctly.

• Improper adjustment of minimum displacement adjusting screw can result in motor failure due to overspeeding.

• It may be necessary to verify the length of adjusting screw used by removing and measuring the screw.

2. Remove the minimum displacement adjusting screw (largest screw) from the top of motor housing and measure its length.

3. Reinstall the minimum displacement adjusting screw and lock nut into the motor housing.

For a 100mm (4 in) long screw, it should be adjusted such that the dimension from the top of the lock nut to the end of the exposed screw is 25mm (1 in). (For different length screws, measure the length and subtract 75mm (3 in) from this total length. This is the amount of screw that should be exposed above the lock nut.) For example: 90mm (3.5 in) screw, minus 75mm (3 in) will leave 15mm (0.6 in) above lock nut.

"X"

MIN. DISPLACEMENT "X" DIMENSION

DIM X

MINIMUM DISPLACEMENT ADJUSTING SCREW

PORT 'M1'

ROTATING GROUP

'A' PORT 'B'

PORT 'A'

DRIVE SHAFT PORT 'X'

MAXIMUM DISPLACEMENT ADJUSTING SCREW

PORT 'G'

BEGIN OF STROKE (MOTOR 'POR') ADJUSTING SCREW

VIEW 'A' AQ012-G

SINGLE DRIVE MOTOR - (160CC SIZE) 8.18

AQ012-F

Tigercat 718E Feller Buncher

Drive

TRANSMISSION

OPERATION

SINGLE MOTOR 2-SPEED TRANSMISSION

Pulling up or pushing down the gearshift lever inside the cab moves the shift lever on the transmission, which moves the shift collar (1), to connect either the LOW gear (2) or the HIGH gear (3) to the output shaft (4).

The two speed manual shift transmission drives both the front and rear axles of the machine.

Power is supplied by the hydrostatic drive motor mounted to the input side of the transmission.

The output shaft transmits power to both the front and rear axles.

Detent balls (5) between the collar and output shaft provide positive feel for the selected range.

This results in either low speed operation , or high speed operation. The mid position is neutral.

Lubrication of the gears, bearings and the splines of the hydrostatic drive motor is accomplished by the splash system. The rotating gears splash oil from the bottom of the transmission around the gear box to lubricate the gears. Splashed oil from the rotating gears is collected in cavities in the transmission housing. These cavities channel the oil to the bearings and splines of the hydrostatic motor. The oil level in the gearbox must be up to the level marked on the dipstick. For the recommended lubricant refer to SECTION 3 of THIS MANUAL.

NOTE: Shift gears only when the machine is stationary and on level ground. Slight movement of the steering joystick may be required to facilitate shifting from one gear to the next.

The transmission must be in neutral for machine to be towed by another vehicle. For more information on towing, refer to TOWING INSTRUCTIONS in SECTION 2 of the OPERATOR'S MANUAL.

INPUT SHAFT (6)

FROM MOTOR

FROM MOTOR

SHIFT COLLAR (1)

DETENT BALLS (5) FRONT AXLE

REAR AXLE

FRONT AXLE

REAR AXLE OUTPUT SHAFT (4)

HIGH GEAR (3)

LOW GEAR (2)

HIGH SPEED OPERATION

LOW SPEED OPERATION 724E-043

2-SPEED TRANSMISSION 8.19

Drive

Tigercat 718E Feller Buncher

TRANSMISSION SHIFT LEVER

9

LEVER ADJUSTMENT

The 2-speed transmission gear shift lever is located at the right side, behind the seat. Lever UP is LOW speed, NEUTRAL in the centre and DOWN is HIGH speed. If required, these positions can be adjusted at the transmission end of the cable.

To shorten or lengthen the cable, remove the cotter pin and the clevis pin and loosen the jam nut, screw the clevis on or off the cable to change the cable length. Tighten the jam nut, replace the clevis pin and cotter pin. The outer cable can be adjusted by adjusting the two jam nuts holding it in the support bracket.

229-20

GEAR SHIFT LEVER

BELLCRANK

7/16"

HEX NUT CLEVIS

CABLE END

SHIFT LEVER

CLEVIS

COTTER PIN

"U" BOLT CABLE HOLD DOWN NUT

JAM NUTS

CABLE

CLEVIS PIN

TRANSMISSION 724E-044

SHIFT CABLE ADJUSTMENT

8.20

Tigercat 718E Feller Buncher

Drive

FRONT DRIVE SHAFT

MIDDLE DRIVE SHAFT

Assembly and installation of a front drive shaft assembly.

Assembly and installation of a middle drive shaft assembly.

1. Park machine on level ground, install articulation lock bar, lower felling head to ground, stop engine, engage parking brake and block wheels.

1. Park machine on level ground, install articulation lock bar, lower felling head to ground, stop engine, engage parking brake and block wheels.

NOTE: For this repair, front and rear chassis must be aligned.

2. Remove the cover plates and belly pan access door on front chassis.

3. Separate the universal joints and remove the front drive shaft.

2. Remove the cover plates and belly pan access door on the rear chassis.

4. Repair or replace the drive shaft as required.

3. Separate the universal joints and remove the drive shaft.

NOTE: See section 9 for hydraulic parking brake Removal and Repair procedures.

4. Repair or replace the drive shaft as required.

IMPORTANT: The mid shaft should not be installed backwards. The slip shaft tube end of mid drive shaft must fasten to the universal joint at the transmission as illustrated.

5. Reverse this procedure for installation.

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) 50 N-m (37 lbf/ft) lubricated

5. Reverse this procedure for installation.

• 7-C (1/2” – 20 UNF) 122 N-m (90 lbf/ft) lubricated

Torque drive shaft yoke (universal Joint) fasteners to the following torque:

REAR DRIVE SHAFT

• 6-C (3/8” - 24 UNF) 50 N-m (37 lbf/ft) lubricated

Assembly and installation of a rear drive shaft assembly.

• 7-C (1/2” – 20 UNF) 122 N-m (90 lbf/ft) lubricated

1. Park machine on level ground, install articulation lock bar, lower felling head to ground, stop engine, engage parking brake and block wheels.

2. Remove the cover plates and belly pan access door on rear chassis.

3. Separate the universal joints and remove the rear drive shaft.

4. Repair or replace the drive shaft as required.

5. Reverse this procedure for installation.

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) 50 N-m (37 lbf/ft) lubricated • 7-C (1/2” – 20 UNF) 122 N-m (90 lbf/ft) lubricated

8.21

Drive

Tigercat 718E Feller Buncher

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) 50 N-m (37 lbf/ft) lubricated FRONT DRIVE SHAFT

REAR DRIVE SHAFT

MIDDLE DRIVE SHAFT

724E-016 724E-042 724E-043 724E-044

DRIVE SHAFT INSTALLATION 7180901 TO 7181080 AND 7181103 TO 7181108 8.22

Tigercat 718E Feller Buncher

Drive

Torque drive shaft yoke (universal Joint) fasteners to the following torque: • 6-C (3/8” - 24 UNF) or (M10 - 1.5) 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

DRIVE SHAFT INSTALLATION 7181081 TO 7181102 AND 7181109 TO 7182000 8.23

Drive

Tigercat 718E Feller Buncher

MACHINES SERIAL NUMBER 7180901 TO 7181080 AND 7181103 TO 7181108

AXLES Power from the drive motors is transmitted to the front and rear axles via the transmission and the front and rear drive shafts.

The front axle assembly is bolted directly to the front chassis. The rear axle assembly is pivot mounted to the rear chassis, allowing oscillation of the axle.

DRAIN (TOP)

Apart from the mounting, both front and rear axle assemblies are configured in a similar way except that the rear axle has internal service brakes and the front axle has none.

DIFF. LOCK (BTM.)

Each axle assembly consists of an input yoke (1), a spiral bevel gear set (2), a differential gear set (3), hydraulic differential locks (4), inboard multiple wet disk brakes (5) (one each side in rear axle only), inboard planetary final drives (6) (one each side) and axle housings and shafts (7).

FRONT AXLE

26KSM

PIVOT LUBRICATION POINT DIFF. LOCK (BTM.)

BRAKE

The final drive (6) is an inboard mounted planetary gear arrangement which further reduces speed and increases torque to the axles.

The input side receives drive power from the differential via a sun gear shaft. The output side (planetary carrier) is splined on to the axle.

DRAIN (TOP)

The lubricant in both axle assemblies is hydraulic oil. There are drain lines from each axle plumbed to the machine's hydraulic system. These drain lines take care of internal leakage originating from the differential locks, which use the same hydraulic oil as the machine's hydraulic system.

Refer also to AXLE LUBRICATION in THIS SECTION. 1 3

2

4

PIVOT LUBRICATION POINT

27KSM

6

7

5

724E-045

8.24

REAR AXLE AXLE HYDRAULIC CONNECTIONS

AXLE ASSEMBLY CROSS SECTION

Tigercat 718E Feller Buncher

Drive

MACHINES SERIAL NUMBER 7180901 TO 7181080 AND 7181103 TO 7181108 DIFFERENTIAL AND DIFFERENTIAL LOCKS The differentials (3) distribute the power to each side of the axle while allowing the wheels to turn at different speeds. The differential locks (4), in the front and rear axle assemblies, are hydraulically controlled and can be independently turned ON or OFF by switches in the cab.

BRAKE DISC BACKING PLATE

Placing one or both switches in the ON position, energizes the differential lock control valve solenoid(s) (located on the pilot manifold) and directs pilot oil to the corresponding differential clutch pack assembly pistons to lock the differential(s).

ANNULAR PISTON

piston and the backing plate to apply the brakes.

Maximum operating pressure for the brakes is 1000 psi. For information on the hydraulic circuit, refer to SECTION 9 of THIS MANUAL.

This condition provides positive drive to both wheels of the axle when tractive conditions might otherwise allow one wheel to spin.

IMPORTANT: Differential locks should only be used when additional traction is needed.

BRAKE LINING INSPECTION (REAR AXLE ONLY) Inspection ports are provided in the differential case and are located on each side of the pivot boss when viewed from the opposite side of the input shaft. Before inspecting the brakes the axle must be drained. Refer to DRAINING THE AXLES in THIS SECTION.

SERVICE BRAKES (REAR AXLE ONLY) The "wet" disc type service brakes consist of an annular piston, a brake disc with brake facing material, and a brake backing plate. One brake assembly is located on each side of the differential case and before the final drive.

• • •

The piston and the backing plate are attached to the case and the brake disc is splined on to the sun gear of the planetary final drive.

Remove brake inspection port plugs.

Inspect brake linings on both sides of disc.

If brake lining material is worn down to the bottom of the oil grooves, brake backing plate and annular piston pressure plate assemblies must be replaced.

When the brake foot control pedal in the cab is depressed, brake pressure oil moves the piston up against the brake disc and traps it between the 1 3

2

ANNULAR BRAKE

AXL-BRK

4

6

7

5

724E-045

8.25

AXLE ASSEMBLY CROSS SECTION

Drive

Tigercat 718E Feller Buncher

MACHINES SERIAL NUMBER 7180901 TO 7181080 AND 7181103 TO 7181108 BRAKE BLEEDING

AXLE LUBRICATION The axles are allowed to completely fill with oil to the top of the differential case. This hydraulic oil buildup inside the differential case is due to normal internal leakage from the differential locks and is used as lubricant for the differential. The excess oil drains back to the hydraulic tank via the axle drain line.

The rear axle assembly is equipped with two brake bleed screws, one for each side. Brakes must be bled whenever there has been potential for air to enter the system, such as removal of hydraulic lines. Both passages must be bled, one at a time.

SINGLE BRAKE LINE ACTUATES BOTH BRAKES IN REAR AXLE

DRAINING THE AXLES Care should be taken when draining the hydraulic oil from the axles, not to also drain the oil from the hydraulic tank. To prevent oil from siphoning from the tank, first remove the hydraulic drain line from the top of the axle to allow air to vent into the axle when the bottom drain plug is removed and oil drains out. The line that is removed must be capped to prevent draining from the hydraulic tank.

BLEED SCREWS

SINGLE BRAKE PEDAL

The time to schedule an oil change in the axles is when doing the seasonal oil change on the hydraulic oil tank, as they are part of the overall system and use the same oil.

REAR AXLE ASSEMBLY

AXL-BRK1

DUAL BRAKES (REAR AXLE)

IMPORTANT: Care should be taken to refill the axle(s) before moving the machine after draining.

PROCEDURE

FILLING THE AXLES The axles must be filled by pumping oil in through the ports on the front of the differential housing on the front axle and the top left side of the differential housing on the rear axle.

1. Place parking brake ON. 2. Place a clear plastic tube over bleed screw with other end in a container.

3. Start engine and set throttle at IDLE. 4. Loosen bleed screw.

Front Axle: Remove the two pipe plugs on the front face of the differential housing on the front axle, use one to fill the axle with and the other as a breather to allow air to vent out and also to allow oil to exit when the axle is full of oil.

5. With the aid of an assistant push and hold brake pedal down until brake bleeding is complete (no air bubbles in clear plastic tube).

6. Tighten bleed screw when oil is free of air.

7. Release brake foot pedal.

8. Repeat above steps for the other bleed screw.

REMOVE BOTH PLUGS, USE ONE FOR FILLING AND ONE FOR BREATHER

724D-D30

8.26

FRONT AXLE

Tigercat 718E Feller Buncher

Drive

MACHINES SERIAL NUMBER 7180901 TO 7181080 AND 7181103 TO 7181108 ALTERNATIVE METHOD OF FILLING AXLES The following alternative method of filling the axles with oil applies when only the axles have been drained of oil and not the hydraulic tank as well. If a major service has been done, the replacement of any major component or the complete machine has been drained of hydraulic oil, refer to START-UP PROCEDURE AFTER MAJOR MACHINE MAINTENANCE in SECTION 3 of THIS MANUAL.

CASE DRAIN PLUG

1. Ensure the articulation lock pin is installed.

2. With engine at IDLE, parking brake ON, hold foot brake down, bleed brakes in front axle.

VENT PLUG

3. Turn both differential locks ON and run engine at IDLE for 30 minutes, this procedure will fill the axles with hydraulic oil and purge the air from them at the same time. (axles fill with controlled leakage from diff. locks). If wheels have been removed, operate forward and reverse pedals very slowly to fill axles with oil.

4. Set throttle to IDLE and run each function for 2 minutes to purge air from circuit.

635-P06

5. Set throttle to FULL and run each function again for 2 minutes to flush circuit.

REAR AXLE (LEFT SIDE OF MACHINE)

6. With cylinders fully retracted, top up the hydraulic oil reservoir with clean hydraulic oil.

Rear Axle: Remove the two plugs* located on the front the left side of the rear axle. To access these plugs remove the hose guard bolted to the axle with three bolts. Tilt the left side of the axle down to facilitate better access. Use the case drain plug to fill the axle and the vent plug* to vent air

NOTE: If the machine was on wheels, the steer and drive functions would not have been properly purged or flushed. Remove the articulation lock pin 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.

*NOTE: If ONLY the axles were drained and not the entire hydraulic system, the port from which the drain line was removed will provide the vent and oil will exit from this port when the axle is full of oil. The drain line should remain capped until it is reinstalled.

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 trapped in the oil to escape, this will also be a good time to check for leaks.

Care must be taken to ensure that both axles are completely full of oil and that all plugs, fittings and lines are tight.

CAPACITIES For front and rear axle oil fill capacities, refer to the table: SERVICE AND LUBRICATION in SECTION 3 of THIS MANUAL.

8.27

Drive

720E-016

Tigercat 718E Feller Buncher

HYDROSTATIC DRIVE CIRCUIT SCHEMATIC 8.28

Tigercat 718E Feller Buncher

Drive

MACHINES SERIAL NUMBER 7180901 TO 7181080 AND 7181103 TO 7181108 3.

REAR AXLE OSCILLATION SHIM CHECK AND ADJUSTMENT

Set a dial indicator against the input pinion shaft on the input end of the axle.

1. The axle must be securely bolted to the chassis through the axle supports (front and back). Torque all axle mounting bolts. Refer to TORQUE CHART in SECTION 3 of THIS MANUAL. 2. Temporarily disconnect the two grease hoses from the axle pivot to prevent grease pressure from affecting the set-up. Plug hose ends to avoid contamination.

AXLE-05

DISCONNECT REAR PIVOT GREASE HOSE

SET DIAL INDICATOR

4. Using a long pry bar between the chassis and the axle housing pry the axle backward. It may be necessary to tip the axle from side to side to position the axle fully back for a proper reading.

AXLE-13

AXLE-06

USE LONG PRY BAR

DISCONNECT FRONT PIVOT GREASE HOSE

724D-D31

AXLE-07

8.29

BETWEEN CHASSIS AND AXLE HOUSING

Drive

Tigercat 718E Feller Buncher 10. Remove the outer cover plate. Carefully remove the centre pivot cover plate from the axle (6 bolts). Care must be taken to ensure that the thrust washer (a round perforated disk) and shims do not fall.

AXLE-10

TIP AXLE SIDE TO SIDE

AXLE-12

REMOVE CENTRE PIVOT COVER

SHIMS

AXLE-11

THRUST WASHER

TIP AXLE SIDE TO SIDE

5. Zero the dial indicator.

6. Using a long pry bar between the chassis and the axle housing pry the axle forward. It may be necessary to tip the axle from side to side to position the axle fully forward for a proper reading.

AXLE-16

11. If the measurement was below .004” ADD shims to get the required range. A 0.010” shim will change the reading by 0.010”. Stock shims are 0.010” and 0.020” thick.

7. Read the dial indicator. Axle movement should be .004” to .014”. Check the reading twice by repeating steps 4 through 7.

12. If the measurement was above .014” REMOVE SHIMS to correct the reading. A 0.010” shim will change the reading by 0.010”.

Stock shims are 0.010” and 0.020” thick.

8. If the reading is within the required range go to step 16.

9. If the reading is not within the required range follow steps 10 through 15 to adjust.

13. Replace the thrust washer.

PIVOT COVER

SHIMS 0.010" AND 0.020" AS REQ'D

SUPPORT PIN

THRUST WASHER AND SHIMS

14. Replace the centre pivot front cover plate.

Make sure that the thrust washer and shims do not slide out of place and become damaged. Torque cover bolts (6) to 80 lbf-ft.

15. Repeat steps 4 to 7 to check the adjustment again. This reading should be checked twice.

THRUST WASHER

16. Reinstall cover plate and grease hoses in the axle pivot, add grease until back pressure is felt.

SUPPORT 718E-040

8.30

Tigercat 718E Feller Buncher

Drive

MACHINES SERIAL NUMBER 7181081 TO 7181102 AND 7181109 TO 7182000 Each axle assembly consists of an input yoke, AXLES a spiral bevel gear set, a differential gear set, Power from the drive motors is transmitted to the hydraulic differential locks, (inboard multiple wet front and rear axles via the transmission and the disk brakes one each side in rear axle only), front and rear drive shafts. inboard planetary final drives (one each side) and axle housings and shafts.

The front axle assembly is bolted directly to the front chassis. The rear axle assembly is pivot The final drive is an inboard mounted planetary mounted to the rear chassis, allowing oscillation gear arrangement which further reduces speed of the axle. and increases torque to the axles. The input side receives drive power from the differential via a sun Apart from the mounting, both front and rear axle gear shaft. The output side (planetary carrier) is assemblies are configured in a similar way except splined on to the axle. that the rear axle has internal service brakes and the front axle has none.

Refer to SECTION 3 for recommended axle lubricant.

FRONT AXLE CROSS SECTION - FRONT VIEW

REAR AXLE CROSS SECTION - TOP AND FRONT VIEW 8.31

Drive

Tigercat 718E Feller Buncher

MACHINES SERIAL NUMBER 7181081 TO 7181102 AND 7181109 TO 7182000

DRIVE AXLE LUBRICATION

4. Clean and reinstall the drain plug in the planetary housing.

New Drive Axles were introduced at the serial number range above. The lubrication oil requires draining and refilling every 1000 hours.

5. Refill the axle through the fill hole in the trumpet housing with the recommended lubrication oil, until oil begins to spill from opposite side fill plug hole. Refer to SERVICE AND LUBRICATION CHART in section 3 for the recommended oil and capacity.

1. Park machine on level ground, apply parking brake, lower attachment to ground, shut off engine.

2. Remove the drain plug from the bottom of the planetary housing and drain the oil into a suitable container for proper disposal/ recycling.

6. Clean and reinstall the fill/level plugs.

7. Lubricate front and rear axle pinion grease seal with lithium based EP2 grease, purge grease fitting.

NOTE: This seal requires lubricating every 1000 hours.

3. Remove the fill/level plugs from the trumpet housing (there is one plug on each of the trumpet housings) (2 per axle).

GREASE FITTING FILL/LEVEL PLUG

FRONT AXLE

LUBRICATE AXLE PINION GREASE SEAL WITH LITHIUM BASED EP2 GREASE TO PURGED

FRONT AND REAR AXLE PINION GREASE SEAL - GREASE FITTING

DRAIN PLUG

REAR AXLE

FILL/LEVEL PLUG

DRAIN PLUG

718E-077 718E-079

DRIVE AXLE SERVICE 8.32

FILL/LEVEL PLUG ALSO ON OTHER SIDE OF HOUSING

Tigercat 718E Feller Buncher

Drive

MACHINES SERIAL NUMBER 7204614, 7204720 TO 7204767 AND 7204779 TO 7182000

REAR AXLE OSCILLATION SHIM CHECK AND ADJUSTMENT

PRY THE AXLE BACKWARD

718E-102A

4. Using a long pry bar between the chassis and the axle housing pry the axle backward. It may be necessary to tip the axle from side to side to position the axle fully back for a proper reading.

5. Zero the dial indicator.

TORQUE ALL AXLE MOUNTING BOLTS (QTY 12)

718E-103

PRY THE AXLE FORWARD

1. The axle must be securely bolted to the chassis through the axle supports (front and back). Torque all axle mounting bolts. Refer to TORQUE CHART in SECTION 3 of THIS MANUAL. 2. Temporarily disconnect the two grease hoses from the axle pivot to prevent grease pressure from affecting the set-up. Plug hose ends to avoid contamination.

718E-102A

6. Using a long pry bar between the chassis and the axle housing pry the axle forward. It may be necessary to tip the axle from side to side to position the axle fully forward for a proper reading.

TRUNNION SUPPORT

TRUNNION SUPPORT

.101MM.356MM (.004"-.014")

AXLE-05

SET DIAL INDICATOR

718E-102

AXLE MOVEMENT BETWEEN TRUNNION SUPPORTS

3.

Set a dial indicator against the input pinion shaft on the input end of the axle.

7. Read the dial indicator. Axle movement should be .004” to .014”. Check the reading twice by repeating steps 4 through 7.

8.33

Drive

Tigercat 718E Feller Buncher

8. If the reading is within the required range go to step 16.

15. Repeat steps 4 to 7 to check the adjustment again. This reading should be checked twice.

9. If the reading is not within the required range follow steps 10 through 15 to adjust.

16. Reinstall cover plate and grease hoses in the axle pivot, add grease until back pressure is felt.

REMOVE COVER PLATE

718E-104

10. Remove the outer cover plate. Carefully remove the pivot cover plate from the axle (12 bolts). Care must be taken to ensure that the thrust washer and shims do not fall.

11. If the measurement was below .004” ADD shims to get the required range. A 0.010” shim will change the reading by 0.010”. Stock shims are 0.004”, 0.007”, 0.010” and 0.020” thick.

SHIMS 0.004", 0.007", 0.010" AND 0.020" AS REQ'D

PIVOT COVER

TRUNNION THRUST WASHER

SUPPORT 718E-042

12. If the measurement was above .014” REMOVE SHIMS to correct the reading. A 0.010” shim will change the reading by 0.010”.

Stock shims are 0.004”, 0.007”, 0.010” and 0.020” thick.

13. Replace the thrust washer.

14. Replace the centre pivot cover plate. Make sure that the thrust washer and shims do not slide out of place and become damaged.

Torque cover bolts (12) to 108.5 N-m (80 lbfft).

8.34

Tigercat 718E Feller Buncher

Drive

WHEEL INSTALLATION NOTE: All wheel installation joints and surfaces should be clean, flat surfaces (free of paint, grease and oil etc.) using grade 8 bolts, hardened washers and standard torque practices.

• Use tapered assembly studs to help with wheel installation. Two or three studs can be used on each side.

MIN. FULL THREAD

2.17" .79" .406" DRILL

.06" X 45° 7/8" - 14 UNF THREAD

20°

2.64" 3.41"

TAPERED ASSEMBLY STUD FOR 7/8" BOLTS AXL-WHL

The tapered assembly stud shown can be fabricated to aid in wheel installation on an axle flange.

•

Thoroughly clean the wheel bolts, washers and the tapped holes in the axle flange.

When cleaning axle wheel flange, be sure to use the proper thread size tap, 7/8" - 14 UNF thread.

• Install the wheel with the aid of the tapered assembly studs.

• Install wheel bolts by hand to insure bolts are not cross threaded.

• Remove assembly studs and install the remaining bolts.

• Torque wheel bolts to the following values: 7/8"-14 UNF torque to 678-746 N-m (500-550 lbf/ft) lubricated.

WARNING If a power wrench is used, be sure that the wheel bolts are first hand-engaged to prevent stripping. Operate the wrench slowly to prevent damage to the threads.

8.35

Drive

Tigercat 718E Feller Buncher

8.36

Tigercat 718E Feller Buncher SECTION 9 - BRAKES AND DIFFERENTIAL LOCKS

BRAKES AND DIFFERENTIAL LOCKS........................................................................................................ 9

CONTENTS - SECTION 9

ISSUE 3.0, JULY, 2015

BRAKES BRAKE ACCUMULATOR.......................................................................................................... 9.3 CIRCUIT DESCRIPTION........................................................................................................... 9.5 CIRCUIT DIAGRAM........................................................................................................... 9.6, 9.7 FOOT CONTROL VALVE.......................................................................................................... 9.3 DIFFERENTIAL LOCKS CIRCUIT DESCRIPTION........................................................................................................... 9.5 CIRCUIT DIAGRAM........................................................................................................... 9.6, 9.7 PARKING BRAKE - HYDRAULIC SPRING APPLIED HYDRAULIC RELEASE...................................................................... 9.4, 9.8

Brakes and Differential Locks

Tigercat 718E Feller Buncher

9.2

Tigercat 718E Feller Buncher

Brakes and Differential Locks ACCUMULATORS

BRAKE COMPONENTS For information on bleeding lines, inspecting brake linings and integral parts of the disc brakes, refer to SECTION 8 of THIS MANUAL.

GAS VALVE GUARD

GAS VALVE

BODY

To release hydraulic pressure in the brake system, refer to RELEASE PILOT SYSTEM PRESSURE in SECTION 5 of THIS MANUAL. BRAKE PEDAL

DIAPHRAGM

HYDRAULIC CONNECTION

213-20

BRAKE PEDAL

875-011

VALVE GUARD POPPET (SEATS AGAINST OIL PORT AFTER OIL EVACUATION)

ACCUMULATOR

There are two accumulators used on this machine: one for the pilot system and one for the brakes. They are both a diaphragm type accumulator and are installed pre-charged with nitrogen gas:

BRAKE FOOT CONTROL VALVE This pilot valve is a manually operated directional valve and operates on the same principle as a pressure reducing valve.

As the pedal is depressed, pressure from the brake accumulator is sent to the brakes in the rear axle. A reaction piston in the valve senses this increase in brake pressure and relays feedback to the operator, i.e., as brake pressure increases the pedal effort increases proportionately.

7180901 to 7182000 - Pilot: 48.2 bar (700 psi) 7180901 to 7181080 and 7181103 to 7181108 - Brake: 52 bar (750 psi) 7181081 to 7181102 and 7181109 to 7182000 - Brake: 62 bar (900 psi) The gas pressure in the pilot accumulator should be checked if the pilot system exhibits repeated and frequent charging cycles. Refer to CHECKING PRE-CHARGE PRESSURE in THIS SECTION.

A positive stop in the brake valve limits the brake pressure to a preset value. This preset value is determined by the requirements of the brakes in the rear axle, the brake pedal therefore regulates the pressure in the brake lines to specifications.

When the pedal is released, the spool returns to its neutral position and allows the brake cylinders to drain to tank.

Prior to performing any maintenance or system modifications, exercise CAUTION to bleed off any stored system pressure by depressing the brake pedal at least 50 times and operating all controls several times. Refer to RELEASE PILOT SYSTEM PRESSURE in THIS SECTION for this procedure.

BRAKE ACCUMULATOR The brake accumulator receives pressure from the accumulator charge valve. The brake accumulator ensures that the brake remains responsive at all times by maintaining an optimum pilot pressure to the brake foot control valve. The brake accumulator holds sufficient pressure for up to 5 brake applications after the engine stalls or is shut down. Beyond this the pressure drops substantially. For further information about BRAKES refer to SECTION 9 of THIS MANUAL.

CROSS SECTION OF VALVE BODY

BRAKE FOOT CONTROL VALVE

9.3

Brakes and Differential Locks

Tigercat 718E Feller Buncher

PARKING BRAKE ASSEMBLY

SPRINGS

STATIONARY DISCS

DRIVE SHAFT

ROTATING DISCS

724E-007 724E-008 724E-016

PARKING BRAKE 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 and hydraulically released.

718E-105

PARKING BRAKE SWITCH

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 key switch is 'OFF'.

9.4

Tigercat 718E Feller Buncher CIRCUIT DESCRIPTIONS

Brakes and Differential Locks

BRAKE CIRCUIT A fixed displacement pump supplies oil to the accumulator charge valve. This valve directs oil to the brake accumulator through a check valve located between the pilot and brake accumulators.

The oil from the brake accumulator side of the check valve is sent to the brake foot control valve to operate the rear axle brakes.

For further information on brake accumulator and the accumulator charge valve operation, refer to SECTION 5 of THIS MANUAL. DIFFERENTIAL LOCKS CIRCUIT The differential locks in both the front and rear axles are controlled by switches. The front and rear differential lock switches are located on the left hand (steering) joystick. The switches control two solenoid operated pilot valves in ports 'C5' (rear) and 'C2' (front) of the pilot manifold.

Holding the front or rear differential lock switches in the ON position energizes the solenoid operated pilot valve which directs pilot oil to the differential lock clutch packs in the corresponding axle to lock the differentials. Refer also to AXLES-DIFFERENTIAL LOCKS in SECTION 8 of THIS MANUAL.

9.5

Brakes and Differential Locks

Tigercat 718E Feller Buncher

718E-045

BRAKE AND DIFFERENTIAL LOCK CIRCUITS - 7180901 TO 7181080 AND 7181103 TO 7181108 9.6

Tigercat 718E Feller Buncher

Brakes and Differential Locks

718E-099

BRAKE AND DIFFERENTIAL LOCK CIRCUITS - 7181081 TO 7181102 AND 7181109 TO 7182000 9.7

Brakes and Differential Locks

Tigercat 718E Feller Buncher

PARKING BRAKE

PARKING BRAKE ASSEMBLY

The spring applied and hydraulically released parking brake assembly installed in the drive line between the transmission and the front axle does not require any adjustment.

Service of the brake assembly is limited to oil change or removal, disassembly and replacement of worn or damaged parts and reinstallation of the brake assembly.

BRAKE ASSEMBLY REMOVAL 1. Park machine on level ground, lower attachment to the ground, install articulation lock bar, shut engine off.

LOWER ATTACHMENT TO THE GROUND

SPRINGS

STATIONARY DISCS

DRIVE SHAFT 724E-036

ROTATING DISCS

BLOCK WHEELS

2. Install wheel blocks in front of and in rear of all four wheels 3. Remove the cover plate under the front chassis to access the brake assembly.

4. Disconnect the hydraulic hose and breather hose at the brake assembly. Plug the hose ends and ports on the brake housing.

724E-007 724E-008 724E-016

PARKING BRAKE

5. Disconnect and remove the drive shafts at the brake assembly.

724E-035

6. Support the brake assembly using a floor jack, and remove the four hex head bolts nuts and washers.

BL024

7. Lower the brake assembly out of the front chassis.

9.8

Tigercat 718E Feller Buncher 1

Brakes and Differential Locks

- ASSEMBLY

23

6

7

13

2

16 19 27 25 26

724E-008

22 18 12 19 15

21

20 24 13

13

15

17

4

20

21

28

11 9 10 23 6

14

BL024

9.9

5

8

3

24

Brakes and Differential Locks

Tigercat 718E Feller Buncher

PARTS DESCRIPTION

Item

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Qty.

1 1 1 7 as req.

2 1 1 18 18 1 1 5 2

Item

Description

15 16 17 18 19 20 21 22 23 24 25 26 27 28

ASSEMBLY . Disc, primary . Cap, end . Bolt, hex. . Shim . Bearing, tapered roller . Shaft, splined . O-ring . Spring, outer . Spring, inner . Retainer, spring . Housing . Disc, rotating . Plug

Qty. 5 1 1 6 2 2 2 1 2 2 1 1 1 1

Description . . . . . . . . . . . . . .

Disc, stationary Gasket Plate, power Bolt Pin, torque Ring, retaining Spacer Plug, protective Seal, oil Seal, oil O-ring Piston O-ring Valve, pressure relief

BRAKE DISASSEMBLY

ASSEMBLY

1. Remove the yokes from the input shaft.

1. Reverse disassembly procedure for assembly with the following notes and additions.

2. Position the brake with the power plate (12) up, the side with the mounting lugs.

2. Pre-lube O-rings, piston and cylinder of the power plate with hydraulic oil.

3. Remove spacers (21) from each end.

Piston Assembly

4. Remove the bolts (18) alternately and slowly, keeping power plate parallel to the housing to prevent damage to the bearings. Use extreme caution springs (9 and 10) can cause power plate to pop off housing.

3. Assemble piston into power plate using a shop press. Take care not to damage O-ring or teflon back-up rings.

4. Vissually align the centre of the cutouts in the piston with the torque pin holes in the power plate.

5. After the bolts (18) have been removed, remove the power plate assembly from brake.

CAUTION: The depth the piston is installed into the power plate is critical. The surface of the piston at the cutouts must be flush to 3.05 mm (0.120") below the surface of the power plate or the piston will cock resulting in complete loss of braking.

6. Remove shaft and disc stack from the brake.

If the disc stack is to be serviced use a shop press to remove the bearing cones from the shaft.

7. Remove primary plate (2), springs and spring retainer from housing spring pocket.

Bearing Assembly

8. Remove piston (26) from power plate by using Low Pressure air 1 bar (15 psi) through hydraulic inlet. Make sure the piston is directed away from the operator.

5. Using a shop press install one cone on the shaft, bearing must be seated tight against the stop. Press only on the inner race of the bearing cone, not on the rollers.

9. Remove O-rings from the OD and ID of the groove of the piston.

6. Install the disc in the order shown in the parts illustration. Install the other bearing cone on the shaft observing the preceding cautions.

NOTE: If the bearings or seals are removed both must be replaced. Seal can be removed by prying it out with an appropriate tool taking care not to damage the bore.

10. Thoroughly clean all the parts.

11. Inspect and replace any worn, damaged or defective parts.

9.10

Tigercat 718E Feller Buncher

Brakes and Differential Locks

Brake Assembly

1. Install the brake assembly in reverse order as

7. Install parts in reverse order of disassembly without installing the shaft seals. Release the brake using 20.7 bar (300 psi) and measure the torque to rotate the shaft. The free rolling torque of the brake shaft is an indication of bearing seating and fit. The rolling torque should be 2.26 N-m (20 inch lbs) maximum. If it does not meet this specification, check that the bearings are well seated.

VENT

PORT FOR BRAKE HYDRAULIC HOSE.

3 HOSE PORT

1

2 DRAIN PLUG

OIL FILL AND LEVEL PLUG FOR LUBRICATING OIL ONLY SEE LUBE CHART FOR SPECIFIC OIL

724E-035

removed. Torque the mounting bolts to 216237 N-m (159-175 lbf/ft ).

2. Reinstall the breather hose in port (3) and hydraulic hose in port (1).

724E-007

3. Remove lubricating oil fill and level plug (2) on side of brake assembly and fill the brake with recommended oil (API-GL-5) as specified in section 3 SERVICE AND LUBRICATION CHART.

DRAIN PLUG

Lip Seal Assembly

4. Install the drive shafts. Torque the yoke (universal joint) retainer bolts to 50 N-m (37 lbf/ft ).

8. After the brake is assembled, install the shaft seals with caution not to cut the seal lips on the shaft splines. The inner seals are installed with spring facing inwards. The outer seals are installed with spring facing outward.

5. Install the cover plate on the bottom of the front chassis.

10. Install the spacers and yokes on the brake assembly. Torque the yoke retainer bolts to 244 N-m (180 lbf/ft).

INSTALLATION

720E-035A

9.11

PARK BRAKE PILOT CONNECTION

Brakes and Differential Locks

Tigercat 718E Feller Buncher

9.12

Tigercat 718E Feller Buncher SECTION 10 - COOLING SYSTEM

COOLING SYSTEM.................................................................................................................................... 10

CONTENTS - SECTION 10

ISSUE 3.0, JULY, 2015

CHARGE AIR COOLER.............................................................................................................. 10.3 CLEANING..........................................................................................SEE OPERATOR’S MANUAL FLEXXAIRE® FAN MAINTENANCE (OPTIONAL ITEM)............................................................ 10.5 BLADE LOCK-OUT PROCEDURE.......................................................................................... 10.8 CHECKING HUB OIL............................................................................................................. 10.10 CIRCUIT DIAGRAM................................................................................................................. 10.7 FAN OVERVIEW...................................................................................................................... 10.6 HUB OIL CAPACITY (APPROXIMATE)................................................................................. 10.10 LUBRICATION AND SERVICE INTERVALS........................................................................... 10.9 MAINTENANCE CHECKLIST................................................................................................ 10.11 REMOVE DEBRIS USING CLEAN FUNCTION...................................................................... 10.6 SAFETY................................................................................................................................... 10.5 OIL COOLER CIRCUIT DESCRIPTION......................................................................................................... 10.3 CIRCUIT DIAGRAM................................................................................................................. 10.4 OIL COOLER OPERATION......................................................................................................... 10.3

Cooling System

Tigercat 718E Feller Buncher

10.2

Tigercat 718E Feller Buncher

Cooling System

CHARGE AIR COOLER/OIL COOLER/ RADIATOR

A/C CONDENSER

CHARGE AIR COOLER

The charge air cooler, hydraulic oil cooler and engine radiator are mounted on top of each other in front of the engine. The oil cooler is the centre section. The A/C condenser core is mounted in front of these three units and on hinges to facilitate cleaning. A debris screen, at the very front, is used to protect the complete cooling assembly.

UPPER DOOR

HAND KNOB OIL COOLER

LOWER ACCESS PANEL LYNCH PIN RADIATOR CHECK VALVE FLOW DIRECTION

718E-028

COOLER COMPARTMENT ACCESS DOORS AND PANELS

The engine fan draws air from behind the cab, through the cooler compartment access doors and the debris screen.

718E-047

A/C CONDENSER AND COOLER PACKAGE This air passes through the A/C condenser core then through the charge air cooler/oil cooler/ radiator assembly and is blown across the engine.

This cooling assembly must be checked daily for accumulation of debris.

For detailed cleaning procedures, refer to CLEANING A/C CONDENSER, AND COOLER PACKAGE in SECTION 2 of the OPERATOR’S MANUAL. OIL COOLER CIRCUIT DESCRIPTION

WING NUTS

Cooling of the oil occurs as air is drawn over the oil cooler cooling fins. Cooled oil then passes through the return filters and into the hydraulic tank.

DEBRIS SCREEN

718E-031

The oil cooler is situated down stream from the boom valve. The boom valve receives hydraulic oil from both the boom section of the boom/steer gear pump and from the saw motor return. The control spool sections of this valve are all “open centre” type, therefore oil surplus to requirements is allowed to pass through the valve to the outlet section of the valve and then return to tank via the oil cooler.

DEBRIS SCREEN

10.3

Cooling System

Tigercat 718E Feller Buncher

BREATHER FILTER

RETURN FILTERS (TRIPPLE HEAD)

TANK

DEBRIS SCREEN

OIL SAMPLING VALVE

CHARGE AIR COOLER

OIL COOLER

ENGINE RADIATOR FLOW DIRECTION

CHECK VALVE

RETURN FROM SAW MOTOR TEE FITTING FEMALE COUPLER A

B

A

B

A

B

A

B

MALE CONNECTOR

FLEXIBLE FILL LINE

BOOM VALVE

HAND FILL PUMP

LEGEND PRESSURE LINE

TO ACCUMULATOR VALVE

DRAIN LINE AIR LINE

BOOM/STEER PUMP

718E-048

OIL COOLER CIRCUIT 10.4

Tigercat 718E Feller Buncher

Cooling System

MAINTENANCE OF FLEXXAIRE® FAN

A. If possible, make all repairs to the fan assembly on an engine stand or any other suitable stand. Do not attempt to work on the fan assembly if not safely supported or mounted.

The following information is an excerpt from the manufacturer’s manual. For further information about the Flexxaire® fan please refer to the manufacturer’s installation and maintenance manual.

B. If repair is to be done to the internal fan components, drain oil from the hub prior to removing any components.

SAFETY In addition to the safety information presented here, please refer to all the safety instructions outlined in the SECTION 1 of THIS MANUAL prior to working on the Flexxaire® Fan Assembly.

C.

WARNING

Always use the required tools and be sure you understand how to use them before performing any service work. Keep tools in good condition and replace if necessary.

D. Replace all fasteners with the same part number. Do not use a lesser quality fastener if replacements are necessary.

Please refer to all safety information supplied, prior to doing any work on the Flexxaire® Fan Assembly.

Improper operation, maintenance or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information.

The person(s) servicing the product may be unfamiliar with many of the systems or components on the product. This makes it important to use caution when performing any type of service work. A knowledge of the product and/or its components is important before the removal or disassembly of any component.

E. Do not attempt to weld any components on the fan assembly without first contacting Flexxaire® Engineering or one of their approved dealers.

F.

Do not damage wiring harnesses during removal operations. Secure the wiring harnesses so they are not contacting sharp corners, hot surfaces, or rubbing against objects. Do not connect wires to lines containing fluid for the possibility of exploding.

G. If a guard or shield must be removed to perform repair work, use extra caution. Repair any loose or damaged fluid lines, tubes or hoses because leaks can cause fires.

WARNING

WARNING Because of the size of the product and/or its components, the service person(s) should use proper lifting procedures when removing the product and/or any of its components.

Use a hoist when lifting the assembly or any of its components that approximately weigh 23 kg (50 lb.) or more, to avoid back injury.

Make sure all chains, hooks, slings, etc., are in good condition and are in the correct capacity. Be sure hooks are positioned correctly. Lifting eyes are not to be side loaded during any lifting operation.

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.

10.5

Cooling System

Tigercat 718E Feller Buncher

H. Tighten fasteners to the correct torque. Make sure all heat shields, clamps and guards are installed correctly to avoid excessive heat, vibration or rubbing against other parts during operation. Shields that protect against oil spray onto hot exhaust in an event of a line, tube or seal failure must be installed correctly.

I.

Do not operate a machine if any rotating part is damaged or contacts any other part during operation. Any high speed rotating component that has been damaged or altered should be checked for balance before reusing. Make sure all guards and shields are properly installed and functioning correctly, before starting the engine or operating the machine.

REMOVE DEBRIS DURING OPERATION USING THE CLEAN FUNCTION The Flexxaire® F/X fan has a CLEAN MODE used to clean debris from the radiator, oil cooler, A/C condenser and air intake screens during operation. Clean mode changes the pitch of the fan blades causing air flow to move in the opposite direction, thereby forcing dust and debris off the radiator, oil cooler, A/C condenser and air intake screen. Ensure that there are no personnel standing near the machine when performing this operation, as dust and debris will fly out. Refer to FAN SWITCH (OPTIONAL) in SECTION 2 of the OPERATOR’S MANUAL for operating instructions.

FAN OVERVIEW The Flexxaire® F/X fan systems are designed to minimize overheating caused by debris plugging radiators, screens and guards, and can be used to reduce over cooling due to low ambient temperatures. The fan blades of the Flexxaire® fan vary pitch, not fan speed, to control air flow and direction.

The blade pitch on an F/X fan is controlled hydraulically through two hydraulic ports. These ports supply fluid to a small double acting hydraulic cylinder embedded within the main shaft.

Pressuring either hydraulic port will move the fan blades into BLOWER (PUSH) or SUCTION (PULL) positions, respectively.

Standard suction mode. Prescreened air passes through the coolers.

Pilot oil is supplied to the hydraulic ports from pilot manifold ports C8 and C9. Refer to FLEXXAIRE® FAN CIRCUIT DIAGRAM in THIS SECTION. For additional information regarding the operation of the Flexxaire® fan refer to FAN SWITCH (OPTIONAL) and CLEANING A/C CONDENSER AND OIL COOLER/RADIATOR in SECTION 2 of THE OPERATOR’S MANUAL.

Clean mode. Quickly and effectively removes debris from the heat exchangers and air intake screens.

FLEXXAIRE® FAN OPERATION

10.6

Tigercat 718E Feller Buncher

Cooling System

FLEXXAIRE® FAN CIRCUIT 718E-049

10.7

Cooling System

Tigercat 718E Feller Buncher

BLADE LOCK-OUT PROCEDURE Flexxaire®’s F/X fan contains two lockout pins, 180° apart, built into the hub assembly. In the event that a hydraulic and/or electrical system failure occurs and these systems are unable to change pitch, the blades can be locked-out in a full SUCTION (PULL - Figure 2) or BLOWER (PUSH - Figure 3) blade orientation as required. The following procedure describes how to lock-out the blades.

G. Manually rotate the blades into the desired full pitch orientation.

CAUTION: Hot oil may eject from the hydraulic fittings.

H. Slide the lock-out pins towards the blade and into the holes of the blade mounting shafts.

I.

A. Stop the engine of the machine.

Tighten the capscrews while the pins are in the holes of the blade mounting shafts. As shown in Figure 5.

#8 CAPSCREW IN EXTENDED POSITION

718-D32

FIGURE 2 SUCTION (PULL) POSITION

FIGURE 3 BLOWER(PUSH) POSITION

718-D30

B. Gain access to the two - #8 capscrews on the rear of the fan hub. Refer to Figure 4.

NOTE: Two - #8 capscrews are spaced 180° apart from one another.

C. Loosen, but do not remove the two capscrews.

D. Disconnect the hydraulic lines from main shaft assembly.

J. Attempt to manually rotate the blades; they should remain locked in the desired pitch mode. However if they do not lock, repeat Steps G through J until blades are locked and then continue.

K. Blades will now maintain their full pitch orientation when the machine engine is started.

NOTE: No purging will be available until the hydraulic failure is corrected. Contact your local dealer and/or Flexxaire® Manufacturing Inc. for further assistance.

E. Cover the hydraulic fittings on the main shaft assembly and hydraulic lines with caps.

F.

FIGURE 5 LOCKED POSITION

Deactivate/plug disconnected hydraulic lines.

L. Blade lock-out procedure is complete.

#8 CAPSCREW IN RETRACTED POSITION

718-D31

FIGURE 4 UNLOCKED POSITION

10.8

Tigercat 718E Feller Buncher

Cooling System

FLEXXAIRE® FAN LUBRICATION AND SERVICE INTERVALS The Flexxaire® F/X Fan does require visual inspections and oil check s to be done as illustrated in Table 1.. See Figure 16 for location of oil fill and drain plugs and oil level plug.

A. Mechanical Review •

Ensure that the fan and blades rotate smoothly.

•

Check for damage to fan blades.

•

Monitor wear of internal fan components by oil analysis (optional).

FLEXXAIRESERVICE.XLS OIL FILL PLUG (DRAIN PLUG LOCATED 180° ON OTHER SIDE OF HUB.

B. Fan Blades Typical service life for fan blades is 10,000 hours or higher. Actual blade is dependent on operating conditions. High abrasive environments will subject the blades to considerably higher wear.

LOCATION OF OIL LEVEL PLUG AND STATO SEAL LOCATION. 718-D29

NOTE: If blades are wearing out before 10,000 hours due to abrasive wear, contact the Product Support Department for Abrasion Resistant Blades.

718-D27

10.9

FIGURE 16

Cooling System

Tigercat 718E Feller Buncher

CHECKING HUB OIL The hydraulic hub contains MOBIL Synthetic SHC629 oil. Refer to Table 2 below for other oil alternatives. A visual inspection should be done every 1000 hours. If necessary oil should be added as per following procedures for 6, 8 and 10 blade hub assemblies.

OIL FILL PLUG

12 O’CLOCK

10 O’CLOCK

2 O’CLOCK

Checking Oil Level And Adding Oil A.

AIR FILLED AREA

OIL LEVEL PLUG

Rotate the hub until the “FILL” plug is at the 12:00 position. As indicated in Figure 18.

OIL FILLED AREA

B. Remove the Oil Level Plug from Bearing Carrier.

6 O’CLOCK

C. Rotate hub until oil starts to drip. If rotation is more than 45° (2:00 position) oil is required.

718-D28

D. Rotate hub back to the 12:00 position. Figure 18.

OIL DRAIN PLUG

FIGURE 18

NOTE: DO NOT OVER FILL HUB. An air space is required to allow for oil expansion, as shown in Figure 18. Failure to do so will result in seal failure.

OIL FILL PLUG (DRAIN PLUG LOCATED 180° ON OTHER SIDE OF HUB.

G. Check for leaks.

Hub Oil Capacity (Approximate) 6 Blade fan - 1.3L (0.34 US gal) NOTE: Use the above capacities as a guide only.

Refer to the above Adding Oil procedures to ensure the correct amount of recommended oil is put into the hub.

LOCATION OF OIL LEVEL PLUG AND STATO SEAL LOCATION. 718-D29

FIGURE 16

E. Add oil until it drips from the Oil Level Hole, not the “FILL” plug.

F.

Reinstall plugs after applying pipe thread sealant.

IMPORTANT: Low oil may indicate a leak.

10.10

Tigercat 718E Feller Buncher

Cooling System

MAINTENANCE CHECKLIST FLEXXAIRE® FAN This checklist is to provide some basic information to be used at time of machinery delivery and at regular maintenance intervals.

718-D34

10.11

Cooling System

Tigercat 718E Feller Buncher

10.12

Tigercat 718E Feller Buncher SECTION 11 - STEERING AND CENTRE JOINT

STEERING AND CENTRE JOINT............................................................................................................... 11

CONTENTS - SECTION 11

ISSUE 3.0, JULY, 2015

CENTER JOINT ADJUSTMENT........................................................................................................................11.11 CHECKING.............................................................................................................................11.11 DIAGRAM.............................................................................................................................. 11.12 GREASE SEALS................................................................................................................... 11.12 LUBRICATION........................................................................................................................11.11 MAINTENANCE......................................................................................................................11.11 JOYSTICK CONTROL VALVE.................................................................................................... 11.6 PILOT MANIFOLD ASSEMBLY DIAGRAM.................................................................................................11.4, 11.10 PRESSURE SETTING CHART. SEE SECTION 3 - LUBRICATION and MAINTENANCE PRESSURE SETTINGS.............................................................................................................. 11.9 SAFETY....................................................................................................................................... 11.9 STEER/BOOM PUMP................................................................................................................. 11.3 STEER CIRCUIT DESCRIPTION........................................................................................................................ 11.7 DIAGRAM................................................................................................................................ 11.8 STEER VALVE............................................................................................................................ 11.5 CROSS SECTION................................................................................................................... 11.5 DESCRIPTION........................................................................................................................ 11.5 OPERATING DESCRIPTION.................................................................................................. 11.5

Steering and Centre Joint

Tigercat 718E Feller Buncher

11.2

Tigercat 718E Feller Buncher STEER/BOOM PUMP

Steering and Centre Joint

This is a double gear pump mounted to the lower left output pad of the pump drive gearbox. The pump drive shaft is connected to the gearbox via a splined adapter.

OUTLET DRIVEN (IDLER) GEAR

DRIVE GEAR

The shaft end section of the pump supplies hydraulic oil for the boom and clamp functions.

The cover end section of the pump supplies hydraulic oil for the steering, brake and differential lock functions and oil to the pilot circuit.

The operation of a typical external gear pump (so called because the gear teeth are on the external surface of the hub) is shown in Figure GEAR1.

INLET

A gear pump carries oil from the inlet to the outlet in the spaces between gear teeth. The pumping chamber is formed by the gears, the pump housing, and side plates. One of the two gears is the drive gear and is connected to the drive shaft.

The other idler gear is driven by the drive gear.

GEAR1

SHAFT END SECTION (BOOM)

AP130-1

STEER/BOOM PUMP

11.3

TYPICAL GEAR PUMP

COVER END SECTION (STEER)

Steering and Centre Joint STEER VALVE

Tigercat 718E Feller Buncher

The steer valve is the valve section mounted on the side of the steering/accumulator/pilot valve assembly. The steer valve has a port relief for each of the work ports ('A' and 'B'). The port relief valves are factory set at 207 bar (3000 psi ) and are non-adjustable.

Hydraulic oil is supplied by the steer pump via the accumulator valve mounted between the steer valve and the pilot valve. Refer to Section Five for details of the accumulator valve operation.

REAR OF CAB PILOT PRESSURE TEST PORT 70 BAR (1000 PSI) GAUGE

PILOT VALVE MANIFOLD PILOT PRESSURE REDUCING VALVE

ACCUMULATOR VALVE

STEERING VALVE

PILOT PRESSURE RELIEF VALVE

UNLOADER RELIEF VALVE MAIN RELIEF VALVE PORT RELIEF VALVES - NOT ADJUSTABLE

NOTES: 1. TORQUE SEQUENCE FOR TIE RODS: STEP TORQUE 20, 41, 61 N-m (15,30,45 FT-LBS) 2. TIE ROD TO BE INSTALLED WITH LONGER THREAD SECTION INSERTED FIRST. 718E-004 718E-005 718E-015

ACCUMULATOR TEST PORT 350 BAR (5000 PSI) GAUGE

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 11.4

Tigercat 718E Feller Buncher STEER VALVE

Steering and Centre Joint

The steer valve is a control valve which consists of an open centre spool section, an inlet section and an outlet section. Cartridge type relief valves are installed in both work ports of the spool section.

Shifting the spool directs oil from the steer pump to the steer cylinders.

The port relief valves in the steer valve also function as anti-cavitation relief valve. The return oil from the port relief valves is diverted back to tank via the tank passage in the spool section and the outlet section.

OPERATING DESCRIPTION Oil from the steer pump (via the accumulator charge valve) enters the inlet section of the steer valve, passes through the open centre spool section and back to tank via the outlet section.

The port relief valves are factory set at 210 bar (3046 psi) and are non-adjustable.

The open centre spool has three positions. A spring in the spool end cap holds the spool in the centre neutral position. The spool is shifted one way or the other by pilot pressure applied to either end of the spool.

WORK PORT BRIDGE B

A

SPOOL

SPOOL CENTREING SPRING

RELIEF VALVE PORT 'A'

718E-012

TANK PASSAGE

THRU' NEUTRAL PASSAGE

STEERING VALVE CROSS SECTION

11.5

RELIEF VALVE PORT 'B'

Steering and Centre Joint JOYSTICK CONTROL VALVE

Tigercat 718E Feller Buncher OPERATING DESCRIPTION In the neutral position the joystick lever is held centred by return spring (4).

This pilot valve is a manually operated directional control valve and operates on the same principle as a direct operating pressure reducing valve.

Operated by hand this valve directs pilot pressure to the steer control valve pilot end caps. The spool valve then shifts from its centre position and directs pump flow to operate the corresponding cylinder.

When the lever (1) is operated, the plunger (5) is pushed against the return spring (4).

At the same time the regulating spool (2) is moved through the regulating spring (3).

When the regulating stroke begins, there is a connection from port 'P' via hole (8) in the spool and work port 2 or 4 in the base of the valve, to the steer valve pilot end caps.

Pressure provided by the steer pump via the pilot manifold at ports 2 and 4 of the joystick valve is directly proportional to the operator position of the joystick and the regulating spring characteristic.

Moving the joystick to the right will steer the machine to the right and moving the joystick to the left will steer the machine to the left. The steering joystick cannot move forward or back due to stops installed in these plunger ports.

JOYSTICK PILOT VALVE

5

1

4 3 2

'P' PORT

AU013-2

WORK PORTS 2 OR 4

SPOOL ARRANGEMENT

AU013-1

11.6

Tigercat 718E Feller Buncher STEER CIRCUIT DESCRIPTION

Steering and Centre Joint

Two steer cylinders are used to steer the machine. Operating oil is supplied from a fixed displacement steer pump, via the main relief valve of the accumulator valve, to the steer valve. The steer valve controls the flow of oil to and from the steering cylinders. The steering joystick supplies pilot oil to shift the spool in the steer valve.

Moving the joystick to the LEFT directs pilot oil to the "A" port pilot end cap of the steer control valve, this shifts the spool in the control valve and allows oil to flow from the steer pump (via the accumulator valve) to the two steer cylinders and steer the machine LEFT. Moving the joystick to the RIGHT directs pilot oil to the "B" port pilot end cap of the steer valve and steers the machine RIGHT. Return oil from the cylinders flows back to the steer valve and is directed back to tank via the outlet section of the steer valve.

The steering "speed" is controlled by the amount the joystick is moved to the right or left. A small movement of the joystick will turn the machine slowly and a large movement of the joystick will turn the machine very rapidly. Relief valves are installed on both ports of the steer valve to prevent over pressurizing of the steer cylinders when the control spool is in the centre position.

The main relief in the accumulator valve is the steer circuit main relief valve. It is set lower than the steer valve port reliefs and is installed in the the accumulator valve. This protects the system by preventing system pressure from rising above the preset value. Higher system pressures will cause the main relief valve to direct oil back to tank.

NOTE: Hydraulic lines to the steer cylinders must be cross connected to allow the machine to steer while being towed by another vehicle.

For complete towing information, refer to TOWING INSTRUCTIONS in SECTION 2 of the OPERATOR'S MANUAL.

11.7

Steering and Centre Joint

718E-050

Tigercat 718E Feller Buncher

STEER CIRCUIT DIAGRAM 11.8

Tigercat 718E Feller Buncher STEERING PRESSURE SETTINGS

Steering and Centre Joint 2. Install a 350 bar (0-5000 psi) pressure gauge to the accumulator main relief valve gauge test port on the back of the accumulator valve.

NOTE: The port relief valves for the steer circuit are factory set and are non-adjustable.

Before starting this procedure, read the following safety precautions: • Wear safety glasses and safety shoes when working on or around machine.

• Never stand in the articulating zone of the machine during set-up. Always stand on the side opposite to the direction in which the machine is being steered.

ACCUMULATOR TEST PORT 5000 PSI. GAUGE

• Be aware of machine pinch points that could cause injury. Never place body parts within the range of motion of moving parts.

3. Start the engine and set the throttle control to IDLE.

• Be sure to use lynch pins when installing articulation lock bar. Vibration and the motion of steering could work retaining pins upward.

ARTICULATION LOCK BAR

NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

4. Ensure that the hydraulic oil temperature is between 49°C -60°C (120°F -140°F). Refer to HYDRAULIC OIL HEATING PROCEDURE in SECTION 5 of THIS MANUAL.

RETAINING PIN

5. Loosen the lock nut and turn the main relief valve in until it lightly bottoms out and tighten lock nut.

LYNCH PIN

6. Steer the machine to the RIGHT, pressure gauge should read *specifications.

7. Steer the machine to the LEFT, pressure gauge should read *specifications.

195-24

8. If pressure is within *specifications for both left and right the port relief valves are OK.

INSTALL ARTICULATION LOCK BAR

1. Park the machine on level ground, lower the felling head to the ground and set the parking brake ON. Install articulation lock bar, block wheels and stop engine.

9. If pressure is OK in one direction but lower in the other, the relief valve for the low reading circuit is defective and must be replaced.

10. Loosen the lock nut and turn the main relief adjusting screw out the same amount of turns used to turn it all the way in. While attempting to STEER the machine either RIGHT or LEFT, set the main relief valve pressure to *specifications.

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

11. Check the pressure while attempting to STEER the machine in the opposite direction, should be same as *specifications.

12. Remove pressure gauge and wipe up any excess oil in test port area.

13. Remove the articulation lock bar and place it in the storage position.

11.9

Steering and Centre Joint

Tigercat 718E Feller Buncher

REAR OF CAB

PILOT PRESSURE TEST PORT 69 BAR (1000 PSI) GAUGE

PILOT VALVE MANIFOLD PILOT PRESSURE REDUCING VALVE ACCUMULATOR VALVE

STEERING VALVE

PILOT PRESSURE RELIEF VALVE

UNLOADER RELIEF VALVE MAIN RELIEF VALVE PORT RELIEF VALVES NOT ADJUSTABLE

NOTES: 1. TORQUE SEQUENCE FOR TIE RODS: STEP TORQUE 20, 41, 61 N-m (15,30,45 FT-LBS) 2. TIE ROD TO BE INSTALLED WITH LONGER THREAD SECTION INSERTED FIRST. ACCUMULATOR TEST PORT 5000 PSI. GAUGE

718E-004 718E-005 718E-015

STEERING / ACCUMULATOR / PILOT VALVE ASSEMBLY 11.10

Tigercat 718E Feller Buncher

Steering and Centre Joint

CENTRE JOINT MAINTENANCE OF CENTRE JOINT Maintenance in this area is usually limited to: a) Regular lubrication of the two centre joint grease fittings (items 11) to purge the pivot bearings of debris and water. Refer to SCHEDULED MAINTENANCE in SECTION 3 of THIS MANUAL for lubrication intervals.

Use only high quality, lithium based EP2 grease containing molybdenum disulphide. b) Visually checking the centre joint pivot for looseness every 1000 hours. With an observer on the ground, keeping well clear of the centre joint area, perform the following test to check for looseness of centre joint.

1. Have operator lift the felling head off the ground and then rapidly raise and lower head several times to "bounce" machine.

2. As machine bounces, check for motion between the front and rear chassis frame lugs. Also check for a "clunking" sound at the centre joint area.

4. Partially depress the plunger end of the dial indicator against the bottom surface of the front chassis upper lug 'B' as close to centre pin as possible. Zero the dial indicator.

5. Fully loosen only the 6 bottom pin retainer bolts (item 2) that were torqued in step 2.

DIAL INDICATOR PLUNGER

CHECK FOR MOVEMENT IN THIS JOINT AREA

267-8

REAR CHASSIS

1000 HOUR CHECK

3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked.

CHECKING THE CENTRE JOINT PRELOAD 1. Park the machine on level ground. Set parking brake ON and shut off engine.

2. Torque the 6 top and 6 bottom retainer bolts (items 1 and 2) to 32 - 35 N-m (282 - 310 lbfft).

3. Place the magnetic base of a dial indicator on the top surface of the front chassis lower lug 'A' as close to the centre pin as possible.

REAR CHASSIS DIAL INDICATOR

FRONT CHASSIS

DIAL INDICATOR BASE

A

267-17

FRONT CHASSIS

B

CHECK PRELOAD

6. The dial indicator should now show a change of .203 to .305 mm (0.008" to 0.012") between lug 'A' and 'B'.

This is the proper bearing preload setting.

A change of less than .203 mm (0.008") indicates that the bearing preload is too low.

No change on the dial indicator is the result of a loose centre joint. In these cases, proceed to Centre JOINT PRELOAD ADJUSTMENT. CENTRE JOINT PRELOAD ADJUSTMENT Before making any adjustments to the centre joint, please follow CHECKING THE Centre JOINT BEARING procedure in THIS SECTION. With dial indicator still in place; 7. Remove all bottom pin retainer bolts (item 2), the bottom pin retainer plate (item 3) and all of the shims in the shim pack (items 10).

CAUTION: Keep upward pressure on the bottom pin (item 9) and do not allow pin to fall out from bearing. These pivot pins are very heavy, block the pin in place if necessary.

8. Remove the thinnest shim from the pack.

9. Reinstall the remaining shims, the retainer plate and the bolts. Leave the bolts loose.

10. Zero the dial indicator again and torque the 6 bottom bolts in sequence to 32 - 35 N-m (282 310 lbf-ft).

11.11

Steering and Centre Joint

Tigercat 718E Feller Buncher

11. A change of .203 to .305 mm (0.008" to 0.012") should register on the dial indicator.

This is the proper bearing preload setting. a) If change in dial indicator reading is greater than .305 mm (0.012"), the shim removed (in step 8) was not thin enough. Obtain a thinner shim and put it back into the shim pack (item 10). b) If the change in the dial indicator reading is less than .203 mm (0.008"), another shim will have to be removed. Repeat steps 7 through 11, removing additional shims but only the thinnest shim each time, until the change in the reading on dial indicator is within the proper range. c) It is possible that the total thickness of two shims is too great and a single shim, of lesser thickness than these two, must be removed.

TORQUE TO 282 - 310 LBF-FT. NO LOCTITE REQUIRED

ORIENTATION OF GREASE SEALS The pivot bearings (item 4) are sealed on both sides by grease seals (items 5 and 6). These seals have proven to have a long life.

If replacement becomes necessary, new seals must be installed in the proper orientation. Refer to the centre joint diagram and follow these guidelines for correct installation; • The two seals installed on either side of the top bearing must be installed with the seal garter spring facing UP. • The two seals installed on either side of the bottom bearing must be installed with the seal garter spring facing DOWN. Apply Loctite (blue - removable) or equivalent and torque the six bolts (item 7) for the bearing retainer plate (item 8) to 9 - 10 N-m (80 - 88 lbf-ft).

1

GREASE SEALS WITH SPRINGS FACING UPWARD

REAR CHASSIS 11

9 10

FRONT CHASSIS

3 2 6 4

TORQUE TO 282 - 310 LBF-FT.

NO LOCTITE REQUIRED

5 8 GREASE SEALS WITH SPRINGS FACING DOWN

724E-069

7 TORQUE TO 80 - 88 LBF-FT. USE LOCTITE (REMOVABLE)

CENTRE JOINT 11.12

Tigercat 718E Feller Buncher SECTION 12 - LIFT BOOM

LIFT BOOM.................................................................................................................................................12

CONTENTS - SECTION 12

ISSUE 3.0, JULY, 2015

B

BOOM LIFT LOCK...................................................................................................................... 12.7 BOOM VALVE ASSEMBLY PROCEDURE.................................................................................................... 12.11 CROSS SECTION OF SPOOL SECTION............................................................................... 12.4 OPERATING DESCRIPTION.................................................................................................. 12.3 C

CIRCUIT DIAGRAM.................................................................................................................... 12.6 J

JOYSTICK CONTROL VALVE.................................................................................................... 12.3 OPERATING DESCRIPTION.................................................................................................. 12.3 P

PRESSURE SETTING CHART................ SEE SECTION 3 - LUBRICATION AND MAINTENANCE PRESSURE SETTINGS.............................................................................................................. 12.7 PUMP, DESCRIPTION BOOM/FAN/STEER PUMP.......................................................... SEE SECTION 11 - STEERING R

RELIEF VALVES ADJUSTING PROCEDURE................................................................................................... 12.10 OPERATION............................................................................................................................ 12.9

Lift Boom

Tigercat 718E Feller Buncher

12.2

Tigercat 718E Feller Buncher BOOM JOYSTICK VALVE

Lift Boom OPERATING DESCRIPTION In the neutral position, the joystick lever is held centred by return spring (4).

The boom joystick pilot valve is a manually operated directional control valve and operates on the same principle as a direct operating pressure reducing valve. Operated by hand, this valve directs pilot pressure to the boom valve pilot end caps. The corresponding spool valve then shifts from its centre position and directs pump flow to operate the corresponding cylinder.

When the lever (1) is operated, the plunger (5) is pushed against the return spring (4).

At the same time, the regulating spool (2) is moved through the regulating spring (3).

When the regulating stroke begins, there is a connection from port 'P' via the hole (8) in the spool and work ports 1, 2, 3 or 4 in the base of the valve, to the boom valve pilot end caps.

Pressure provided by the boom pump via the pilot manifold at ports 1, 2, 3 and 4 of the joystick valve is directly proportional to the operator position of the joystick and the regulating spring characteristic.

BOOM VALVE The boom valve consists of four open centre spool sections and one inlet section. Each spool section is pilot operated. An outlet section directs return oil back to tank. The control valve is located on the front chassis above the front axle and behind the cover plate.

OPERATING DESCRIPTION

726E-001

Oil enters the inlet section and is allowed to pass through the four spool sections and back to tank via the outlet section. Each of these spool sections has a self-centring, 3-position spool which is open centred. A spring in the spool end cap holds the spool in the centre neutral position. The spool is shifted by pilot pressure being applied to either end of the spool. Shifting the spool directs oil to operate any one of the four functions (or all at the same time if required but with reduced flow to each).

JOYSTICK PILOT VALVE

5

1

To prevent over pressurizing of the operating circuits, each work port in the valve sections has a port relief valve.

4

A main relief valve is installed in the inlet section of the valve. The main relief valve controls the lift spool section and is set lower than the lift up port relief valve. All relief valves are the same type (anti-cavitation relief valve). For a detailed description of these relief valves, refer to RELIEF VALVES in THIS SECTION.

3 2

'P' PORT

AUO13-2

WORK PORTS 1, 2, 3 OR 4

SPOOL ARRANGEMENT 12.3

Lift Boom

Tigercat 718E Feller Buncher

LIFT 'DOWN' PORT RELIEF 152 BAR (2200 PSI)

LIFT 'UP' PORT RELIEF 200 BAR (2900 PSI)

INLET GAUGE TEST PORT

INLET MAIN RELIEF 179 BAR (2600 PSI)

INLET SECTION

BOOM CONTROL VALVE

724E-060

RELIEF VALVE PORT 'A'

PILOT END CAP 90136-3

SPOOL CENTREING SPRING THRU' NEUTRAL PASSAGE

PARALLEL PASSAGE

A

LOAD CHECK VALVE

WORK PORT BRIDGE

RELIEF VALVE PORT 'B'

B

PILOT END CAP TANK PASSAGE

CROSS SECTION OF SPOOL SECTIONS

12.4

SPOOL

Tigercat 718E Feller Buncher LIFT BOOM CIRCUIT DESCRIPTION

Lift Boom

Two cylinders are used to raise and lower the felling head. The boom cylinders receive oil from a fixed displacement pump via the LIFT spool section in the boom valve. The lift spool section in the boom valve is pilot operated at both ends.

Pilot oil from the boom (right hand) joystick control valve in the operator's cab shifts the spool.

The spool directs oil from the pump to either end of the cylinders and from the cylinders back to tank via the oil cooler and return filters.

12.5

Lift Boom

718E-051

Tigercat 718E Feller Buncher

LIFT BOOM CIRCUIT 12.6

Tigercat 718E Feller Buncher PRESSURE SETTINGS

Lift Boom WARNING

NOTE: Refer to RELIEF VALVE ADJUSTING PROCEDURE in this section.

Do not stand above or below the felling head and lift boom or between the boom and front chassis during this procedure.

Before starting this procedure, read the following safety precautions:

4. Turn the boom inlet main relief adjusting screw all the way IN.

• Never reach between boom crank arms or link arms during machine set-up.

5. Turn both lift spool section port relief valve adjusting screws OUT until spring pressure is relieved then turn adjusting screws one full turn IN.

• Wear safety glasses and safety shoes when working on shears.

• Do not stand on top or inside of boom arms.

1. Park machine on level ground. Completely raise lift boom. Set parking brake ON. Install articulation lock bar, block wheels and stop engine.

6. Start the engine, and set the throttle control to the 1000 rpm IMPORTANT: During the following procedures, DO NOT hold ANY function control for LONGER THAN 5 SECONDS.

WARNING

7. Ensure that the hydraulic oil temperature is between 49 °C -60°C (120°F - 140°F).

To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

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.

2. Completely raise lift boom and install lift boom cylinder lock over one of the two cylinder rods with the open side at the bottom and wide end up against the keeper plate bolt heads. Install retaining bolt and lock nut through centre hole. Slowly lower boom until lock is securely held in place.

WARNING

CRANK ARM

LINK ARM

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

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head • Do not use to set hydraulics pressures 3. Connect a 0-350 bar (0 - 5000 psi) pressure gauge (with at least 4' of hose) to the boom control valve inlet test port.

NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

BOOM ARM

718E-028

12.7

CRANK, LINK AND BOOM ARMS

Lift Boom

Tigercat 718E Feller Buncher

8. While holding the joystick in the LIFT UP position (fully extended), check gauge pressure reading.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

If less than *specifications, lower boom to rest against lock, stop engine and readjust LIFT UP port relief. Repeat above procedure until a gauge reading meets *specifications.

9. Remove lift boom cylinder lock. It is not designed to withstand high forces created by the hydraulic system. Never use this cylinder lock to set boom down port relief.

10. While holding the joystick in the LIFT DOWN position (fully retracted), check gauge pressure reading. Front wheels may lift off ground.

If less than *specifications, release pressure in rod end of lift cylinders and allow felling head to sit on the ground. Stop engine and readjust LIFT DOWN port relief. Repeat above procedure until a gauge reading meets *specifications.

11. Stop engine, unscrew main relief adjusting screw three (3) full turns.

12. Start engine and move the throttle control to the 2200 rpm 13. While holding the joystick in the LIFT UP position (fully extended), check gauge pressure reading.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

If less than *specifications, release pressure in base end of lift cylinders and allow felling head to sit on the ground. Stop engine and readjust the main relief. Repeat above procedure until a gauge reading meets specifications.

14. Remove pressure gauge and wipe up any excess oil from test port area.

12.8

Tigercat 718E Feller Buncher

Lift Boom ANTI-CAVITATION RELIEF VALVE

VALVE POPPET

This valve is used as a MAIN and PORT relief valve in the saw, clamp arm, and accumulating arm control valves.

T P

Operation Step 1.

T

STEP 1 PILOT POPPET

‘P’ represents a high pressure area and ‘T’ represents tank. Under normal operation, ‘P’ is below the relief pressures, the valve poppet is firmly seated and oil cannot flow to tank.

T

Step 2.

P

STEP 2

When the pressure at ‘P’ reaches the relief valve setting, the pilot poppet unseats and allows oil in the inner cavity to flow to tank, thus lowering the pressure in the cavity between the pilot poppet and the other poppets.

T

Step 3.

T

SEATING POPPET

As a result of the opening of the pilot poppet, the seating poppet moves back, due to the pressure drop caused by oil flow through the bore of the seating poppet, and seats against the pilot poppet. This shuts off the flow of oil through the seating poppet and the cavity pressure now drops to tank pressure.

P

STEP 3

T

Step 4.

T

VALVE POPPET

As the seating poppet began to move away from the valve poppet, the valve poppet began to open under the effect of the pressure at P thus allowing a large volume of flow to tank. The drop in pressure behind the valve poppet when the seating poppet seats on the pilot poppet ensures full opening of the valve poppet.

P

T

STEP 4

Step 5.

When pressure ‘P’ drops the pilot poppet closes and then the seating poppet moves back to its original position and permits oil pressure to flow into the cavity behind the valve poppet. As the seating poppet moves back it comes in contact with the valve poppet and its spring force plus the oil pressure cause the valve poppet to move back to the closed position.

T

VALVE POPPET

P

STEP 5

T CHECK POPPET

As an anti-void or check valve.

The anti-void unit supplies oil to the pressure area ‘P’ when its pressure drops below the pressure in the tank gallery of the valve. The valve then acts as a free flow check valve and prevents cavitation.

In this condition, the pressure at ‘P’ is lower than at ‘T’ and due to the shape of the check poppet, the pressure forces cause the poppet to unseat, allowing oil to flow from ‘T’ to ‘P’.

T P

ANTI-VOID CHECK OPERATION

T 12.9

Lift Boom

Tigercat 718E Feller Buncher

ANTI-CAVITATION RELIEF VALVE ADJUSTING PROCEDURE For relief valve with adjusting nut ADJUSTING NUT

ANTI-CAVITATION RELIEF VALVE ADJUSTING PROCEDURE For relief valve with adjusting screw ADJUSTING SCREW

JAM NUT

RELIEF VALVE

RELIEF VALVE

51055-2

WITH ADJUSTING NUT

1.

Loosen jam nut.

2.

Turn adjusting nut to obtain desired pressure reading on gauge.

3.

Lock jam nut against adjusting nut, making sure the adjusting nut does not turn.

5.

Re-check relief setting.

For complete step-by-step pressure setting procedures of circuits using these relief valves, refer to appropriate sections in THIS MANUAL.

JAM NUT

51055-20

WITH ADJUSTING SCREW

1.

Loosen jam nut.

2.

Turn adjusting screw to obtain desired pressure reading on gauge.

3.

Lock jam nut against relief valve body, making sure the adjusting screw does not turn.

5.

Re-check relief setting.

For complete step-by-step pressure setting procedures of circuits using these relief valves, refer to appropriate sections in THIS MANUAL.

12.10

Tigercat 718E Feller Buncher BOOM VALVE ASSEMBLY PROCEDURE

Lift Boom

4. Position end section on last spool section as shown and hand tighten tie rod nuts.

1. Lay out valve components on a clean, flat working surface. The inlet assembly will include an O-ring, a load check poppet and a load check spring. Tools required for basic valve assembly include a 3/4" and 11/16" wrench and a torque wrench with thin wall sockets.

5. Position valve assembly with the mounting pads of the end sections on a flat surface.

To obtain proper alignment of end sections relative to the spool sections, apply downward pressure to the end sections and snug the tie rod nuts to 1 N-m (10 lbf-ft).

Torque the two 11/16" nuts at 5-5.6 N-m (45-50 lbf-ft).

2. Assemble tie rod nuts to one end of each tie rod with one or two threads showing. Insert tie rods through rod holes in inlet section (larger diameter rod at top). Lay inlet section on end with tie rods up. Place the O-ring in position within the groove.

Torque the 3/4" nut at 8-9 N-m (70-80 lbf-ft).

6. Install auxiliary valves and plugs and torque to proper values.

3. Place first spool section (O-ring side facing up) on the inlet section. Position O-ring in to groove and insert load check poppet (nose down) and spring (behind poppet) into load check cavity as shown. Repeat this procedure for each spool section. The load check springs are compressed by the following sections during assembly.

12.11

Lift Boom

Tigercat 718E Feller Buncher

12.12

Tigercat 724E Feller Buncher SECTION 13 - TILT

TILT.............................................................................................................................................................13

CONTENTS - SECTION 13

ISSUE 3.0, JULY, 2015

B

BOOM LIFT LOCK...................................................................................................................... 13.5 BOOM VALVE DIAGRAM................................................................................................................................ 13.3 OPERATING DESCRIPTION.................................................................................................. 13.3 C

CIRCUIT DESCRIPTION............................................................................................................ 13.3 CIRCUIT DIAGRAM.................................................................................................................... 13.4 CONTROL VALVES..................................................................................................................... 13.3 P

PRESSURE SETTING CHART................ SEE SECTION 3 - LUBRICATION AND MAINTENANCE PRESSURE SETTINGS.............................................................................................................. 13.5 S

SAFETY....................................................................................................................................... 13.5

Tilt

Tigercat 718E Feller Buncher

13.2

Tigercat 718E Feller Buncher

Tilt

TILT 'OUT' PORT RELIEF 200 BAR (2900 PSI)

TILT 'IN' PORT RELIEF 200 BAR (2900 PSI)

GAUGE TEST PORT INLET SECTION

724E-062

MAIN RELIEF 179 BAR (2600 PSI)

BOOM VALVE

CONTROL VALVES

A main relief valve is installed in the inlet section of the valve. The main relief valve controls the lift spool section and is set lower than the lift up port relief valve. All relief valves are the same type (anti-cavitation relief valve).

The boom valve consists of four open centre spool sections and one inlet section. Each spool section is pilot operated. An outlet section directs return oil back to tank. The control valve is located on the front chassis above the front axle and behind the cover plate.

For a complete description of the boom joystick pilot valve, refer to JOYSTICK CONTROL VALVE in SECTION 12 of THIS MANUAL.

OPERATING DESCRIPTION Oil enters the inlet section and is allowed to pass through the four spool sections and back to tank via the outlet section. Each of these spool sections has a self-centring, 3-position spool which is open centred. A spring in the spool end cap holds the spool in the centre neutral position. The spool is shifted by pilot pressure being applied to either end of the spool. Shifting the spool directs oil to operate any one of the four functions (or all at the same time if required but with reduced flow to each).

TILT CIRCUIT DESCRIPTION The boom valve is located on the front chassis above the front axle, behind the cover plate.

Two cylinders are used to tilt the felling head forward and back. The cylinders receive oil from the fixed displacement boom pump via the TILT spool section in the boom control valve. The tilt spool section in this control valve is pilot operated at both ends. It receives pilot oil from the boom joystick control valve in the operator's cab to shift the spool. The spool directs oil from the pump to either end of the cylinders and from the cylinders back to tank via the oil cooler and return filters.

To prevent over pressurizing of the operating circuits, each work port in the valve sections has a port relief valve.

13.3

Tilt

718E-052

Tigercat 718E Feller Buncher

TILT CIRCUIT 13.4

Tigercat 718E Feller Buncher

Tilt

PRESSURE SETTINGS

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.

NOTE: Refer to RELIEF VALVE ADJUSTING PROCEDURE in SECTION 18 of THIS MANUAL. Before starting this procedure, read the following safety precautions: • Never reach between boom crank arms or link arms during machine set-up.

• Wear safety glasses and safety shoes when working on shears.

CRANK ARM

• Do not stand on top or inside of boom arms.

LINK ARM

1. Park machine on level ground. Completely raise lift boom. Set parking brake ON. Install articulation lock bar, block wheels and stop engine.

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

BOOM ARM

718E-028

2. Install lift boom cylinder lock over one of the two cylinder rods with the open side at the bottom and wide end up against the keeper plate bolt heads. Install retaining bolt and lock nut through centre hole. Slowly lower boom until lock is securely held in place.

CRANK, LINK AND BOOM ARMS

4. Turn the boom main relief adjusting screw all the way IN. 5. Turn both tilt spool section port relief valve adjusting screws OUT until spring pressure is relieved then turn adjusting screws one full turn IN.

WARNING

6. Start the engine, and set the throttle control to the 1000 rpm NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

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

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head

IMPORTANT: During the following procedures, DO NOT hold ANY function control for LONGER THAN 5 SECONDS.

3. Connect a 0-350 bar (0-5000 psi) pressure gauge (with at least 4' of hose) to the inlet test port.

7. Ensure that the hydraulic oil temperature is between 49°C-60°C (120°F - 140°F).

WARNING Do not stand above or below the felling head and lift boom or between the boom and front chassis during this procedure.

13.5

Tilt

Tigercat 718E Feller Buncher

8. While holding the joystick in the TILT OUT position (fully extended), check gauge pressure reading.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

If less than *specifications, stop engine and readjust TILT OUT port relief. Repeat above procedure until gauge reading meets *specifications.

9. While holding the joystick in the TILT IN position (fully retracted), check gauge pressure reading.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

10.

11.

12.

13.

If less than *specifications, stop engine and readjust TILT IN port relief. Repeat above procedure until gauge reading meets *specifications.

Stop engine, unscrew main relief adjusting screw 3 full turns.

Start engine and move the throttle control to the FULL position.

While holding the joystick in the TILT IN position, check gauge pressure reading.

If less than *specifications, stop engine and readjust the boom main relief. Repeat above procedure until gauge reading meets *specifications.

Remove pressure gauge and wipe up any excess oil from test port area.

13.6

Tigercat 724E Feller Buncher SECTION 17 - SAW DRIVE

SAW DRIVE................................................................................................................................................17

CONTENTS - SECTION 17

ISSUE 3.0, JULY, 2015

CIRCUIT DIAGRAM.................................................................................................................... 17.4 MOTOR BEGIN OF STROKE. SEE FELLING HEAD MANUAL MOTOR MINIMUM DISPLACEMENT. SEE FELLING HEAD MANUAL PRESSURE SETTING CHART. SEE SECTION 3 - LUBRICATION AND MAINTENANCE SAW CONTROL VALVE.............................................................................................................. 17.6 SAW ELECTRICAL CIRCUIT SCHEMATIC................................................................................ 17.7 SAW PUMP DESCRIPTION........................................................................................................................ 17.3 SCHEMATIC............................................................................................................................ 17.8

Saw Drive

Tigercat 718E Feller Buncher

17.2

Tigercat 718E Feller Buncher

Saw Drive

SAW PUMP The saw pump supplies oil to the saw motor via the saw valve located in the hydraulic pump compartment mounted on the side of the fuel tank.

The saw valve controls the flow of oil from the saw pump to the saw motor. See SAW CONTROL VALVE operation later in this section.

The saw pump is an axial-piston variable displacement pump controlled by a pressure compensator mounted directly on the pump (Pump Controller).

The saw pump is mounted on the pump drive gearbox and is driven by the engine through the gearbox.

'LS' ADJUSTMENT

'POR' ADJUSTMENT

'POR' ADJUSTMENT

'LS' ADJUSTMENT 720E-005 720E-006

PUMP CONTROLLER

SAW PUMP

DRIVE PUMP

RELIEF VALVE

SAW PUMP

724E-045

SAW PUMP CONTROLLLER

720E-004

HYDRAULIC PUMPS 17.3

SAW CONTROL VALVE

Saw Drive

720E-010A

Tigercat 718E Feller Buncher

SAW DRIVE CIRCUIT DIAGRAM 17.4

Tigercat 718E Feller Buncher

Saw Drive

SAW CONTROL VALVE The saw control valve consists of a steel valve body into which are housed a solenoid operated control valve cartridge, a relief valve cartridge and a pilot operated check valve.

The saw valve controls the flow of oil from the saw pump to the saw motor.

TO SAW PUMP CONTROLLER.

OUT

PRESSURE SENDER

SOL. VALVE

PRESSURE SENDER PORT G1

DR CHECK VALVE

VALVE BODY

RELIEF VALVE

TEST PORT G2 720E-019

ADJUSTING SCREW

RELIEF VALVE T

IN

PRESSURE SENDER

VALVE BODY

ADJUSTING SCREW RELIEF VALVE DIN CONNECTOR

CHECK VALVE

SOLENOID CONTROL VALVE

SOLENOID TEST BUTTON SOLENOID CONTROL VALVE

TEST PORT G2

SOLENOID TEST BUTTON

SAW CONTROL VALVE OPERATING DESCRIPTION

The PILOT OPERATED RELIEF VALVE is included to protect the pump in case of failure of the POR valve on the pump. Oil is diverted to tank via the 'TANK' port.

When the SOLENOID VALVE is de-energized (saw switch in OFF position), oil entering the 'IN' port is blocked by the CHECK VALVE preventing flow to the saw motor.

The RELIEF VALVE is adjusted by loosening the lock nut and turning the adjusting screw clockwise to increase the pressure value and counter-clockwise to decrease the value. It must be set at least 28 bar (400 psi) higher than the POR setting on the pump.

When the SOLENOID VALVE is energized, (saw switch ON) the spool in the control valve shifts and: (1) Allows system pressure to reach the back side of the PILOT OPERATED CHECK VALVE. This pressure, via internal porting, causes the CHECK VALVE to open and allow system pressure via the 'OUT' port to reach the saw motor.

If the relief valve setting is lower than the pump POR setting, the pump will not destroke during load conditions (saw blade acceleration) and oil will flow over the relief valve generating heat.

A gauge test port (G2) is provided for attaching a pressure gauge when checking pressure.

(2) Transmits a pressure signal via the COMP port to the saw pump (LS port) causing it to provide flow to the saw motor.

For a complete description of the circuit and pressure setting instructions, refer to PRESSURE SETTINGS: PUMP AND SAW CONTROL VALVE.

For trouble shooting purposes, a RED push button on the end of the solenoid valve can be used to operate the valve manually.

17.5

Saw Drive

Tigercat 718E Feller Buncher

SAW CONTROL VALVE TEST BUTTON

SOLENOID CONTROL VALVE 'DR' - TO RETURN MANIFOLD

INLET PORT SUPPLY FROM PUMP

G1 PRESSURE SENDER PORT RELIEF VALVE

G2 TEST PORT

TO 'LS' PORT ON SAW PUMP CONTROLLER OUTLET PORT TO MOTOR

RETURN TO MANIFOLD

TO RETURN MANIFOLD

CHECK VALVE

PRESSURE SENDER

'G1' PORT WITH PRESSURE SENDER FOR SAW INDICATOR GAUGE RELIEF VALVE

INLET SUPPLY FROM PUMP

SOLENOID CONTROL VALVE

TO 'LS' PORT ON SAW PUMP CONTROLLER

TEST BUTTON

OUTLET TO SAW MOTOR INLET SUPPLY FROM PUMP

SOLENOID CONTROL VALVE

SAW CONTROL VALVE 17.6

Tigercat 718E Feller Buncher

Saw Drive

SAW CIRCUIT DESCRIPTION

When pressure builds up to 16-19 bar (225-275 psi) the spool in the STAND-BY valve shifts to direct oil to the control piston of the pump swashplate, moving it to the neutral position. In this condition the pump flow is reduced to a minimum.

The saw blade (typically) is driven by a variable displacement hydraulic motor (axial piston, bent axis) which is mounted directly above the saw blade and coupled to the saw blade through a drive shaft.

A variable displacement hydraulic pump mounted on the pump drive gearbox supplies oil flow to the motor via the saw control valve. The saw control valve is solenoid operated with a built in relief and controls the flow of hydraulic oil from the pump to the motor.

With the saw switch in the ON position, the saw valve solenoid is energized, directing the flow of oil to unseat a PILOT OPERATED CHECK VALVE in the saw control valve. This allows high pressure oil to flow from the pump to the motor.

Return oil from the saw motor is directed back through the oil cooler to the return filters then on to tank.

NOTE: A red SOLENOID MANUAL TEST BUTTON on the end of the solenoid valve can be used to shift the valve spool manually for trouble shooting purposes.

High pressure oil is also directed from the saw valve COMP port back to the STAND-BY valve on the pump to prevent the STAND-BY spool from shifting. This will override the 16-19 bar (225-275 psi) setting and allow the saw pump to build up pressure.

The saw switch on the control panel in the cab is used to turn the saw ON or OFF. It is a 2 position switch controlling the flow of electrical current via a relay to the saw valve solenoid.

When the pressure (system pressure) builds up to 248 bar (3600 psi) the spool in the pump POR valve shifts to direct oil to the pump swashplate control piston. The piston moves the swashplate towards the neutral position to cut back the flow of oil but maintain the pressure.

IMPORTANT: To maximize saw motor life, do not shut the engine off until the saw blade has come to a complete stop.

With the saw switch in the OFF position, the saw valve solenoid is de-energized preventing oil flow to the motor.

This system has a low horsepower requirement and generates less heat since the pump reduces its output flow instead of dumping hydraulic oil over relief valves.

When this occurs, the loss of load pressure at the COMP port of the saw valve is sensed by the saw pump controller and the pump displacement is reduced to that required to maintain 16-19 bar (225275 psi) (or below) standby pressure.

The saw motor adjusts its displacement in response to system pressure. Note, this is only true with variable displacement motors.

For explanation of saw motor, refer to saw head manufacturers manual.

720E-011

SAW ELECTRICAL CIRCUIT SCHEMATIC 17.7

Saw Drive

718E-069

Tigercat 718E Feller Buncher

SAW HYDRAULIC CIRCUIT SCHEMATIC 17.8

Tigercat 718E Feller Buncher

Saw Drive

PRESSURE SETTINGS: PUMP AND SAW CONTROL VALVE 1. Park machine on level ground, lower felling head to the ground and stop engine.

2. Install Saw Guard and block saw blade from rotating as per method outlined in saw head manufacturer’s manual.

3. Ensure that the hydraulic oil is between 49°C60°C (120°F-140°F).

LOCKING SCREWS 'POR' ADJUSTMENT

ADJUSTING SCREW

PORT G1

'LS' STANDBY ADJUSTMENT

RELIEF VALVE (4400 PSI)

720E-005A

7. Loosen lock screw and adjust the pump POR to 310 bar (4500psi) @1100 rpm Screw adjustment in to increase pressure or out to decrease pressure.

IMPORTANT: Saw relief valve must be set at least 28 bar (400 psi.) above pump POR to avoid generation of excessive heat.

TEST PORT G2

860C-142

SAW PUMP ADJUSTMENTS

8. Loosen jam nut and set the Relief Valve (on saw control valve) to *specifications. Screw adjustment in to increase pressure or out to decrease pressure. Tighten jam nut when adjustment is complete.

9. Readjust the pump POR to *specifications.

Screw adjustment in to increase pressure or out to decrease pressure. Tighten set screw to 0.6 N-m (5 lbf/ft) when adjustment is complete.

10. Shut saw OFF, set engine speed to LOW IDLE then shut engine OFF.

SAW CONTROL VALVE

4. Install a 0-350 bar (0-5000 PSI) pressure gauge on saw control valve G2 gauge test port.

5. Turn the main relief on the saw control valve in to lightly bottom out.

6. Start engine, increase engine speed to 1100 rpm, close cab door, press pilot reset and turn saw switch ON. NOTE: * Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

17.9

Saw Drive

Tigercat 718E Feller Buncher SET MOTOR BEGIN OF REGULATION TO *SPECIFICATIONS Refer to felling attachment manufacturer’s service literature for this procedure.

11. Remove the 350 bar (5000 psi) gauge and install a 41.4 bar (600 psi) gauge. WARNING DO NOT TURN THE SAW ON this will damage the gauge if you do.

12. Start engine, increase engine speed to 2200rpm

SET MOTOR MINIMUM DISPLACEMENT Refer to felling attachment manufacturer’s service literature for this information.

LOCKING SCREWS 'POR' ADJUSTMENT

'LS' STANDBY ADJUSTMENT 720E-005A

SAW PUMP ADJUSTMENTS

13. With the saw off, check stand by pressure and adjust to *specifications if required.

14. Set engine speed to LOW IDLE then shut engine OFF. Remove 41.4 bar (600 psi) gauge.

15. Unpin the saw blade.

16. Install a 350 bar (5000 psi) gauge in the G port on the saw motor.

17. Start engine, increase engine speed to 2200 rpm, close cab door, press pilot reset and turn saw switch ON. Watch for motor begin of regulation.

18. Stop the saw and adjust motor begin of regulation if required.

IMPORTANT: The motor begin of regulation setting must be at least 28 bar (400 psi) lower than the pump POR setting.

17.10

Tigercat 724E Feller Buncher SECTION 18 - CLAMPS WITH SAW

CLAMPS WITH SAW.................................................................................................................................. 18

CONTENTS - SECTION 18

ISSUE 3.0, JULY, 2015

BOOM LIFT LOCK...................................................................................................................... 18.7 BOOM VALVE............................................................................................................................. 18.3 OPERATING DESCRIPTION.................................................................................................. 18.4 SPOOL SECTION DIAGRAM.................................................................................................. 18.4 CIRCUIT DESCRIPTION............................................................................................................ 18.5 CIRCUIT DIAGRAM.................................................................................................................... 18.6 CONTROL VALVES..................................................................................................................... 18.3 PILOT LINE PRESSURES........................................................ SEE SECTION 5 - PILOT SYSTEM PRESSURE SETTINGS.............................................................................................................. 18.7 RELIEF VALVES ADJUSTING PROCEDURE................................................................................................... 18.10 OPERATION............................................................................................................................ 18.9 SAFETY....................................................................................................................................... 18.7 SPOOL SECTION DIAGRAM..................................................................................................... 18.4

Clamps with Saw

Tigercat 718E Feller Buncher

18.2

Tigercat 718E Feller Buncher CONTROL VALVES

Clamps with Saw The inlet receives oil from the boom pump.

The spools in the valve are open centre type.

Each spool section is pilot operated. An outlet section directs return oil back to tank.

The clamp and accumulating arm circuits are controlled by a clamp foot control valve, three solenoid operated pilot valves in the pilot manifold (accumulator) and a pilot operated boom valve.

Cartridge type port relief valves are installed in both work ports of the clamp spool section and both work ports in the accumulator spool section.

The inlet section has a single main relief valve.

These reliefs protect the circuits (pumps) from high pressures during operation.

For a complete description of the pilot manifold refer to SECTION 5 of THIS MANUAL. For a complete description of the foot operated pilot valve, refer to FOOT CONTROL VALVE in SECTION 8 of THIS MANUAL. BOOM VALVE The boom valve is located on the front chassis above the front axle and behind the cover plate.

One of the spool sections is used to open and close the clamp and a second spool section to open and close the accumulating arm.

CLAMP 'OPEN' PORT RELIEF 76 BAR (1100 PSI)

CLAMP 'CLOSE' PORT RELIEF 221 BAR (3200 PSI)

ACCUMULATOR 'CLOSE' PORT RELIEF 221 BAR (3200 PSI)

ACCUMULATOR 'OPEN' PORT RELIEF 221 BAR (3200 PSI)

INLET SECTION

MAIN RELIEF 179 BAR (2600 PSI)

GAUGE TEST PORT (IN ELBOW)

724E-067

BOOM CONTROL VALVE

18.3

Clamps with Saw

Tigercat 718E Feller Buncher

OPERATING DESCRIPTION

A main relief valve is installed in the inlet section of the valve. The main relief valve controls the clamps spool section and is set lower than the clamps close port relief valve. All relief valves are the same type (anti-cavitation relief valve). For a detailed description of these relief valves, refer to RELIEF VALVES in THIS SECTION.

Oil enters the inlet section and is allowed to pass through the four spool sections and back to tank via the outlet section. Each of these spool sections has a self-centring, 3-position spool which is open centred. A spring in the spool end cap holds the spool in the centre neutral position. The spool is shifted by pilot pressure being applied to either end of the spool. Shifting the spool directs oil to operate any one of the four functions (or all at the same time if required but with reduced flow to each).

To prevent over pressurizing of the operating circuits, each work port in the valve sections has a port relief valve.

RELIEF VALVE PORT 'A'

PARALLEL PASSAGE

LOAD CHECK VALVE

A

WORK PORT BRIDGE

RELIEF VALVE PORT 'B'

B

PILOT END CAP

SPOOL

SPOOL CENTREING SPRING

TANK PASSAGE THRU' NEUTRAL PASSAGE

90136-3

CROSS SECTION OF CLAMP SPOOL SECTION

18.4

PILOT END CAP

Tigercat 718E Feller Buncher CLAMPS

Clamps with Saw

NOTE: Circuit using a Tigercat attachment (with single clamp and accumulator arms) is described below.

CIRCUIT DESCRIPTION The clamp and accumulating arms are operated by separate cylinders. A fixed displacement pump supplies oil to the cylinders via two spool sections in the boom valve.

The clamp arm is operated by the clamp foot control valve (left side of cab floor). The left pedal is used to OPEN and the right pedal to CLOSE. Pressing the CLAMP OPEN pedal directs pilot oil to shift the spool in the clamp spool section.

Pressing the CLAMP CLOSE pedal directs pilot oil to the opposite end of the spool to shift it in the opposite direction. The spool directs oil from the pump to either end of the clamp arm cylinder to open or close the arm. Return oil is directed back to tank via the oil cooler.

The accumulating arm is operated by a 3 position thumb switch OPEN/CLOSE (self centring to OFF) located on the right joystick control. The switch operates two solenoid pilot valves on the pilot manifold which direct pilot oil to the accumulator spool section of the boom control valve, to shift the spool. The spool directs oil from the pump to either end of the accumulating arm cylinder to open or close the arm. Return oil is directed back to tank via the oil cooler and dual head return oil filter.

A second (momentary) thumb switch located on the right joystick is used to operate both accumulating arm open and clamp arm open.

Pushing and holding the switch activates the accumulating clamp open solenoid (SV6B circuit C6) and the clamp open solenoid (SV1 circuit C1) opening both arms at the same time. This switch is used as a single control for an all open function to unload or dump all trees gathered in the attachment.

18.5

Clamps with Saw

Tigercat 718E Feller Buncher

18.6

Tigercat 718E Feller Buncher

Clamps with Saw TO SET CLAMP AND ACCUMULATOR OPEN AND CLOSE RELIEF VALVES:

PRESSURE SETTINGS NOTE: Refer to RELIEF VALVE ADJUSTING PROCEDURE in THIS SECTION.

3. Connect a 0-350 bar (0-5000 psi) pressure gauge (with at least 2 meter 6.5' of hose) to the test port on of the boom control valve.

Before starting this procedure, read the following safety precautions: • Never reach between boom crank arms or link arms during machine setup.

WARNING

• Wear safety glasses and safety shoes when working on shears.

Do not stand above or below the felling head and lift boom or between the boom and front chassis during this procedure.

• Keep clamp and accumulator arms closed whenever possible during setup.

4. Turn the boom main relief adjusting screw all the way IN.

• Clamp and accumulator arms open and close very rapidly, always keep clear of operating area.

5. Turn the port relief valve adjusting screws on both the accumulator and clamp spool sections of the control valve OUT until spring pressure is relieved then turn adjusting screws one full turn IN.

• Do not stand on top or inside of boom arms.

NOTE: This procedure assumes that a Tigercat Bunching Saw Head is used. Refer to illustration of BOOM CONTROL VALVE IN THIS SECTION for orientation and pressure value references.

6. Start the engine, and set throttle to IDLE. NOTE: *Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

1. Park machine on level ground, lower felling head to the ground and set parking brake ON. Install articulation lock bar, block wheels and stop engine.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

WARNING

7. Ensure that the hydraulic oil temperature is between 49°C-60°C (120°F-140°F).

To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

IMPORTANT: During the following procedures, DO NOT hold ANY function control for LONGER THAN 5 SECONDS. 8. While holding the left foot pedal down in the CLAMP OPEN position (cylinder fully retracted), check gauge pressure reading.

2. Completely raise lift boom and install lift boom cylinder lock over one of the two cylinder rods with the open side at the bottom and wide end up against the keeper plate bolt heads. Install 'T' handle retainer bolt through centre hole.

Slowly lower boom until lock is securely held in place.

If less than *specifications, stop engine and readjust clamp open port relief. Repeat above procedure until gauge reading meets *specifications.

WARNING

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

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head

18.7

Clamps with Saw

Tigercat 718E Feller Buncher

CLAMP 'OPEN' PORT RELIEF 76 BAR (1100 PSI)

CLAMP 'CLOSE' PORT RELIEF 221 BAR (3200 PSI)

ACCUMULATOR 'CLOSE' PORT RELIEF 221 BAR (3200 PSI)

ACCUMULATOR 'OPEN' PORT RELIEF 221 BAR (3200 PSI)

MAIN RELIEF 179 BAR (2600 PSI)

GAUGE TEST PORT

718E-059

INLET SECTION

BOOM CONTROL VALVE

9. While holding the right foot pedal down in the CLAMP CLOSE position (cylinder fully extended), check gauge pressure reading.

12. Stop engine, unscrew boom main relief adjusting screw 3 full turns.

13. Start engine and move the throttle control to the FULL position.

If less than *specifications, stop engine and readjust clamp close port relief. Repeat above procedure until gauge reading meets *specifications.

14. While holding the joystick thumb switch in the ACCUMULATING ARM OPEN position, check gauge pressure reading.

10. While holding the right joystick thumb switch to the left in the ACCUMULATING ARM OPEN position (accumulator cylinder fully retracted), check gauge pressure reading.

If less than *specifications, stop engine and readjust boom main relief. Repeat above procedure until gauge reading meets *specifications.

If less than *specifications, stop engine and readjust accumulator open port relief.

Repeat above procedure until gauge reading meets *specifications.

15. Remove pressure gauge and wipe up any excess oil from test port area.

SET PILOT LINE PRESSURES: NOTE: Refer to SECTION 5 of THIS MANUAL.

11. While holding the right joystick thumb switch to the right in the ACCUMULATING ARM CLOSE position (accumulator cylinder fully extended), check gauge pressure reading.

If less than *specifications, stop engine and readjust accumulator close port relief. Repeat above procedure until gauge reading meets *specifications.

18.8

Tigercat 718E Feller Buncher

Clamps with Saw ANTI-CAVITATION RELIEF VALVE

VALVE POPPET

This valve is used as a MAIN and PORT relief valve in the saw, clamp arm, and accumulating arm control valves.

T P

Operation Step 1.

T

STEP 1 PILOT POPPET

‘P’ represents a high pressure area and ‘T’ represents tank. Under normal operation, ‘P’ is below the relief pressures, the valve poppet is firmly seated and oil cannot flow to tank.

T

Step 2.

P

STEP 2

When the pressure at ‘P’ reaches the relief valve setting, the pilot poppet unseats and allows oil in the inner cavity to flow to tank, thus lowering the pressure in the cavity between the pilot poppet and the other poppets.

T

Step 3.

T

SEATING POPPET

As a result of the opening of the pilot poppet, the seating poppet moves back, due to the pressure drop caused by oil flow through the bore of the seating poppet, and seats against the pilot poppet. This shuts off the flow of oil through the seating poppet and the cavity pressure now drops to tank pressure.

P

STEP 3

T

Step 4.

T

VALVE POPPET

As the seating poppet began to move away from the valve poppet, the valve poppet began to open under the effect of the pressure at P thus allowing a large volume of flow to tank. The drop in pressure behind the valve poppet when the seating poppet seats on the pilot poppet ensures full opening of the valve poppet.

P

T

STEP 4

Step 5.

When pressure ‘P’ drops the pilot poppet closes and then the seating poppet moves back to its original position and permits oil pressure to flow into the cavity behind the valve poppet. As the seating poppet moves back it comes in contact with the valve poppet and its spring force plus the oil pressure cause the valve poppet to move back to the closed position.

T

VALVE POPPET

P

STEP 5

T CHECK POPPET

As an anti-void or check valve.

The anti-void unit supplies oil to the pressure area ‘P’ when its pressure drops below the pressure in the tank gallery of the valve. The valve then acts as a free flow check valve and prevents cavitation.

In this condition, the pressure at ‘P’ is lower than at ‘T’ and due to the shape of the check poppet, the pressure forces cause the poppet to unseat, allowing oil to flow from ‘T’ to ‘P’.

T P

ANTI-VOID CHECK OPERATION

T 18.9

Clamps with Saw ANTI-CAVITATION RELIEF VALVE ADJUSTING PROCEDURE For relief valve with adjusting nut ADJUSTING NUT

Tigercat 718E Feller Buncher ANTI-CAVITATION RELIEF VALVE ADJUSTING PROCEDURE For relief valve with adjusting screw ADJUSTING SCREW

JAM NUT

RELIEF VALVE

RELIEF VALVE

51055-2

WITH ADJUSTING NUT

1.

Loosen jam nut.

2.

Turn adjusting nut to obtain desired pressure reading on gauge.

3.

Lock jam nut against adjusting nut, making sure the adjusting nut does not turn.

5.

Re-check relief setting.

For complete step-by-step pressure setting procedures of circuits using these relief valves, refer to appropriate sections in THIS MANUAL.

JAM NUT

51055-20

WITH ADJUSTING SCREW

1.

Loosen jam nut.

2.

Turn adjusting screw to obtain desired pressure reading on gauge.

3.

Lock jam nut against relief valve body, making sure the adjusting screw does not turn.

5.

Re-check relief setting.

For complete step-by-step pressure setting procedures of circuits using these relief valves, refer to appropriate sections in THIS MANUAL.

18.10

Tigercat 724E Feller Buncher SECTION 19 - SHEAR WITH CLAMPS

SHEAR WITH CLAMPS.............................................................................................................................. 19

CONTENTS - SECTION 19

ISSUE 3.0, JULY, 2015

BOOM LIFT LOCK...................................................................................................................... 19.7 BOOM VALVE............................................................................................................................. 19.3 OPERATING DESCRIPTION.................................................................................................. 19.4 SPOOL SECTION.................................................................................................................... 19.4 CIRCUIT DESCRIPTION............................................................................................................ 19.5 CIRCUIT DIAGRAM.................................................................................................................... 19.6 CONTROL VALVES..................................................................................................................... 19.3 FOOT OPERATED PILOT VALVE.............................................................SEE SECTION 8 - DRIVE PRESSURE SETTINGS.............................................................................................................. 19.7 SAFETY....................................................................................................................................... 19.7

Shear with Clamps

Tigercat 718E Feller Buncher

19.2

Tigercat 718E Feller Buncher CLAMPS WITH SHEAR

Shear with Clamps Two of the five spool sections are used to open and close the shear/clamp and a third spool section to open and close the accumulating arm.

Tigercat 1800 and 2000 Model Bunching Shears The shear/clamp and accumulating arm circuits are controlled by two solenoid operated pilot valves in the pilot manifold, a foot operated pilot valve and a pilot operated boom valve.

There are two inlet sections, the end inlet is for the shear close spool section and receives oil from the variable displacement shear pump. The mid inlet is for the remaining four spool sections and it receives oil from the fixed displacement boom/steer pump.

For a description of the PILOT MANIFOLD refer to SECTION 5 of THIS MANUAL.

All five spools in the valve are open centre type.

Each spool section is pilot operated.

For a complete description of the foot operated pilot valve refer to FOOT CONTROL VALVE in SECTION 8 of THIS MANUAL.

An outlet section directs return oil back to tank.

CONTROL VALVES

Cartridge type relief valves are installed in both work ports of the first shear/clamp spool section, the mid inlet , the shear open work port of the second shear/clamp spool section and both work ports in the accumulating arm spool section.

These protect the circuits (pumps) from high pressures during operation.

BOOM VALVE (WITH SHEAR) The boom valve and is located on the front chassis above the front axle and behind the cover plate.

OUTLET SECTION

SHEAR 'OPEN' PORT RELIEF (3200 PSI)

PLUG (NO PORT RELIEF)

SHEAR AND CLAMP ACCUMULATOR ARM 'CLOSE' PORT RELIEF (3200 PSI)

ACCUMULATOR ARM 'OPEN' PORT RELIEF (3200 PSI)

ACCUM.

GAUGE TEST PORT FOR ACCUM. ARM AND SHEAR OPEN

MAIN RELIEF (2600 PSI)

MID. INLET SECTION SHEAR/CLAMP 'CLOSE' PORT RELIEF (3700 PSI)

SHEAR AND CLAMP

CLAMP 'OPEN' PORT RELIEF (3700 PSI)

END INLET SECTION

3713AIL2

BOOM VALVE SHOWN WITH SHEAR

19.3

GAUGE TEST PORT FOR SHEAR/CLAMP CLOSE AND CLAMP OPEN

Shear with Clamps RELIEF VALVE PORT 'A'

PILOT END CAP 90136-3

Tigercat 718E Feller Buncher PARALLEL PASSAGE

LOAD CHECK VALVE

A

WORK PORT BRIDGE

RELIEF VALVE PORT 'B'

B

PILOT END CAP

SPOOL CENTREING THRU' NEUTRAL PASSAGE SPRING

TANK PASSAGE

CROSS SECTION OF SHEAR/CLAMP SPOOL SECTION (END)

OPERATING DESCRIPTION Oil from the variable displacement shear pump enters the end inlet section of the boom valve and is allowed to pass through the open centre shear spool section and the tank passages of the boom and clamps spool sections and back to tank via the outlet section.

Oil from the fixed displacement boom/steer pump enters the mid inlet section of the boom valve and is allowed to pass through the four open centre spool sections and back to tank via the outlet section.

The open centred spools in all of the sections have three positions and are self centring. A spring in the spool end cap holds the spool in the centre neutral position.

The spools are shifted one way or the other by pilot oil pressure being applied to either end of the spool.

Shifting the spool(s) directs oil from the shear pump and/or boom pump) to the shear, clamp and accumulating cylinders.

The relief valves installed in the first shear/clamp spool section of the boom valve are to protect the pump in case of failure of the POR valve on the pump.

All of the relief valves on the boom valve divert oil to tank via the tank passages in the spool sections and the outlet section of the boom valve. They also function as anti-cavitation relief valves.

For descriptions of relief valves, refer to RELIEF VALVES in SECTION 18 of THIS MANUAL.

19.4

SPOOL

Tigercat 718E Feller Buncher CIRCUIT DESCRIPTION

Shear with Clamps

The shear, clamp arm, and accumulating arm are each operated by separate cylinders. A variable displacement piston pump and a fixed displacement pump supply oil to the cylinders via three spool sections in the boom valve.

The shear and clamp arm open and close together by the clamp arms/shear foot control valve (left side of cab floor). The left foot pedal is used to OPEN and the right foot pedal to CLOSE. Pressing the CLAMP/SHEAR OPEN pedal directs pilot oil to shift the spools in both SHEAR/CLAMP spool sections. The first spool section at the front of the valve directs oil from the shear pump to the rod end of the shear cylinder to open the shear.

The second spool section, located next to the accumulator section, directs oil from the boom pump to the rod end of the clamp cylinder to open the clamp arm.

Pressing the CLAMP/SHEAR CLOSE pedal directs pilot oil to the opposite end of both spools to shift them in the opposite direction. In this case oil from both pumps combines at the manifold on the shear head providing additional flow to close the shear and clamp together more quickly.

The accumulating arm is operated by a 3 position thumb switch OPEN/CLOSE (self centring to OFF) located on the right joystick control. The switch operates two solenoid pilot valves which direct pilot oil to the ACCUMULATING spool section of the boom valve to shift the spool. The spool directs oil from the fixed displacement boom pump to either end of the accumulating arm cylinder to open or close the arm. Return oil is directed back to tank via the oil cooler and primary return dual head filter.

19.5

Shear with Clamps

718E-100

Tigercat 718E Feller Buncher

SHEAR WITH CLAMPS CIRCUIT 19.6

Tigercat 718E Feller Buncher

Shear with Clamps 1. Park machine on level ground, lower shear head to the ground and set parking brake ON. Install articulation lock bar, block wheels and stop engine.

PRESSURE SETTINGS

Before starting this procedure, read the following safety precautions: • Do not assume that other workers are aware of the dangers associated with shears.

2. Completely raise lift boom and install lift boom cylinder lock over one of the two cylinder rods with the open side at the bottom and wide end up against the keeper plate bolt heads. Install retaining bolt and lock nut through centre hole. Slowly lower boom until lock is securely held in place.

• Because of background noise, a closing (or opening) shear is virtually silent.

• Shear blades and clamp arms open and close very rapidly, always keep clear of operating area.

• Keep clamp and accumulator arms closed whenever possible during setup.

WARNING

• Never reach between boom crank arms or link arms during machine setup.

Do not stand above or below the felling head and lift boom or between the boom and front chassis during this procedure.

• Do not stand on top or inside of boom arms.

• When a shear is attached to a machine, the blade mounting bolts must be re-torqued.

TO SET CLAMP OPEN AND ACCUMULATOR OPEN AND CLOSE RELIEF VALVES:

• Wear safety glasses and safety shoes when working on shears.

• Check for foreign objects (wood, stones, nuts, bolts, etc.) resting on or around the blades. Make sure all tools and spare parts are removed from the shear area. If shear closes on any object, injury may occur from propelled objects or pieces.

Refer to RELIEF VALVE ADJUSTING PROCEDURE in SECTION 18 of THIS MANUAL.

• Check torque on blade mounting bolts.

4. Turn the boom mid inlet main relief adjusting screw all the way IN.

3. Connect a 0 - 5000 psi pressure gauge (with at least 4' of hose) to the test port on the elbow at the mid inlet section of the boom and shear control valve.

• Warn everyone to stay away from the shear head and the immediate area.

5. Turn the port relief valve adjusting screws on both the accumulating and clamp spool sections of the control valve OUT until spring pressure is relieved then turn adjusting screws one full turn IN.

• Slowly close the shear blade and check for proper clearances, alignment and operation.

WARNING To prevent injury caused by accidental steering of the machine when setting pressures, make sure the articulation lock bar is held securely in place by the lynch pins provided.

SHEAR AND CLAMP ACCUM

WARNING TEST PORTS

SHEAR AND CLAMP

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

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head • Do not use to set hydraulics pressures

3717AIL2

19.7

BOOM AND SHEAR MAIN VALVE

Shear with Clamps

Tigercat 718E Feller Buncher

6. Start the engine, and set throttle to IDLE.

TO SET SHEAR/CLAMP CLOSE AND SHEAR OPEN RELIEF VALVES:

NOTE: *Refer to section 3, PRESSURE SETTINGS chart in this manual for pressure and speed specifications.

15. Connect a 0 - 5000 psi . pressure gauge (with at least 4' of hose) to test port on the end inlet section of the boom and shear control valve.

IMPORTANT: Never run engine at full throttle with main relief turned all the way in.

16. Connect a 0-5000 psi pressure gauge in test port on SHEAR PUMP for use when working at rear of machine.

7. Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in SECTION 5 of THIS MANUAL. IMPORTANT: During the following procedures, DO NOT hold ANY function control for LONGER THAN 5 SECONDS. 8. While holding the foot pedal in the CLAMP/ SHEAR OPEN position (shear cylinder fully retracted), check gauge pressure reading.

LOCKING SCREWS 'POR' ADJUSTMENT

If less than *specifications, stop engine and readjust CLAMP OPEN port relief.

Repeat above procedure until gauge reads *specifications.

'LS' STANDBY ADJUSTMENT 720E-005A

9. While holding the right joystick thumb switch in the ACCUMULATING ARM OPEN position (accumulating cylinder fully retracted), check gauge pressure reading.

SHEAR PUMP ADJUSTMENTS

17. Loosen lock nut and screw POR valve adjusting screw on the saw pump all the way IN. This is a temporary adjustment until the saw relief valve has been set.

If less than *specifications, stop engine and readjust ACCUMULATING ARM OPEN port relief. Repeat above procedure until gauge reads *specifications.

18. At the valve, unscrew both port relief valve adjusting screws on the SHEAR spool section until spring pressure is relieved.

19. Start the engine, and put the throttle control to the IDLE position.

10. While holding the right joystick thumb switch in the ACCUMULATING ARM CLOSE position (accumulating cylinder fully extended), check gauge pressure reading.

IMPORTANT: Before starting engine, ensure both port relief valves are unscrewed as stated previously or damage could occur to the piston pump.

If less than *specifications, stop engine and readjust ACCUMULATING ARM CLOSE port relief. Repeat above procedure until gauge reads *specifications.

20. While holding the foot pedal in the SHEAR/ CLAMP CLOSED position (shear and clamp cylinders fully extended) check gauge pressure reading.

11. Stop engine, unscrew mid inlet main relief adjusting screw 3 full turns.

If less than *specifications, stop engine and readjust CLAMP/SHEAR CLOSE port relief.

Repeat above procedure until gauge reads *specifications.

12. Start engine and move the throttle control to the FULL position.

13. While holding the joystick thumb switch in the ACCUMULATING ARM OPEN position, check gauge pressure reading.

NOTE: Engine rpm may have to be increased a small amount to prevent stalling.

If less than *specifications, stop engine and readjust mid inlet main relief. Repeat above procedure until gauge reads *specifications.

14. Remove pressure gauge and wipe up any excess oil from test port area.

19.8

Tigercat 718E Feller Buncher

Shear with Clamps

21. While holding the foot pedal in the SHEAR/ CLAMP OPEN position (clamp cylinder fully retracted), check gauge pressure reading.

If less than *specifications, stop engine and readjust SHEAR OPEN port relief.

Repeat above procedure until gauge reads *specifications.

22. While holding the foot pedal in the SHEAR/ CLAMP OPEN position (clamp cylinder fully retracted), set POR valve on pump to *specifications.

23. Remove pressure gauges and wipe up any excess oil from test port area.

SET PILOT LINE PRESSURES NOTE: Refer to PILOT PRESSURE SETTINGS in SECTION 5 of THIS MANUAL.

19.9

Shear with Clamps

Tigercat 718E Feller Buncher

19.10