Tigercat 726 Feller Buncher Operator's Manual - PDF DOWNLOAD

OPERATOR'S MANUAL Tigercat 726 FELLER BUNCHER Issue 4.1, MARCH 2003 TABLE OF CONTENTS SECTION GENERAL SPECIFICATIONS ........................................................................................... ii SAFETY ............................................................................................................................ 1 USING HIGH SPEED DISC SAWS SAFELY......................... APPENDIX TO SECTION 1 CONTROLS AND OPERATION ........................................................................................ 2 LUBRICATION AND MAINTENANCE ............................................................................... 3

726-SM00

726 Available Literature Operator's Manual (This Manual) .......... Part No. 4323A Service Manual ...................................... Part No. 1684A Parts Catalog ......................................... Part No. 1471A Hydraulic Adapters Book ....................... Part No. 1472A Hose assembly Book ............................. Part No. 3707A

Tigercat Industries Inc. P.O. Box 544 Paris, Ontario Canada N3L 3T6 Tel: (519) 442-1000

Fax: (519) 442-1855

Tigercat 726 Feller Buncher

General Specifications

SPECIFICATIONS: DIMENSIONS (With 28L x 26 Tires)

OPTIONAL ........................ Up to 68 x 50.00 - 32 HYDRAULIC SYSTEM

WIDTH .......................................................................... 118" LENGTH Less felling head ..................................... 228" HEIGHT Overall, approx. ....................................... 139" Less removable skylight ........................ 127" WHEEL BASE ............................................................. 111" GROUND CLEARANCE: With 28L x 26 tires .................................... 21" With 30.5 x 32 tires ................................... 25" FRAME ARTICULATION ..................................... 41 deg WEIGHT Less felling head ........................... 26,000 lbs

HYDROSTATIC PUMP Variable disp. axial piston BOOM PUMP ................. Fixed displacement vane STEERING PUMP ........ Fixed displacement vane SAW PUMP ................... Dedicated var. displacement axial piston RESERVOIR .................. 85 Gallon capacity FILTRATION .................. 7 micron, full flow BOOM CYLINDERS ..... 4 Identical lift and tilt 4.5" bore STEER CYLINDERS .... 3" bore x 17" stroke

POWER

OPERATOR S STATION CAB .................... Fully enclosed and insulated 2 doors and removable skylight Air conditioner heater and defroster Lexan TM glazing Forward sloping windshield SEAT .................. Full suspension, 9 way adjustable Armrest mounted joystick CONTROLS ...... Hyd. proportional for boom and travel Electric switch for accumulating arms STEERING ........ Steering bar, variable speed hydraulic

ENGINE ............. Caterpillar 3116TA 195 HP @ 2200rpm COOLING ......... Oversize coarse finned radiator and Oil cooler Suction engine fan Removable debris screen at air intakes FUEL TANK ...... 90 gallon capacity POWER TRAIN HYDROSTATIC ........ Variable displacement pump Variable displacement motor TRANSFER CASE ... 2 Speed mechanical shift AXLES ....................... Front fixed Rear oscillating 15 deg. each way Differential locks, front and rear TRAVEL SPEEDS ... Low range ................... 0 - 4.7 mph High range .................. 0 - 9.6 mph

OTHER STANDARD EQUIPMENT Pressurized water system Precleaner and 2 Stage engine air cleaner Water separator for fuel system Back-up alarm ELECTRICAL BATTERY .......................... (2) 12 volt ALTERNATOR .................. 100 amp LIGHTING ......................... Optional

BRAKES DYNAMIC BRAKING ...................................... Hydrostatic SECONDARY BRAKESRear axle, enclosed, oil cooled PARK BRAKE ..................... Manual driveline disc brake

FELLING HEAD Flexible hydraulic system can be tailored to accept various felling heads including shear heads up to 22" and high speed continuous rotation circular saws up to 22"

TIRES STANDARD ....................... 28L x 12 ply

WE RESERVE THE RIGHT TO AMEND THESE SPECIFICATIONS AT ANY TIME WITHOUT NOTICE

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Tigercat 726 Feller Buncher

SECTION 1 - SAFETY MARCH 2003

CONTENTS - SECTION 1 ARTICULATION LOCK PIN ............................................................................... 1.8 BATTERY DISCONNECT SWITCH .................................................................. 1.6 COOLING SYSTEM .......................................................................................... 1.7 EXHAUST FUMES ............................................................................................ 1.8 FIRE PREVENTION FIRE PREVENTION GUIDELINES ............................................................... 1.9 WHAT ELSE TO DO BEFORE YOU EXPERIENCE A FIRE ...................... 1.10 WHAT TO DO AFTER A FIRE .................................................................... 1.11 WHAT TO DO IN CASE OF A MACHINE FIRE .......................................... 1.10 FIRST AID ......................................................................................................... 1.4 FLUID LEAKS ................................................................................................... 1.7 HYDRAULIC PRESSURE HAZARD .................................................................. 1.7 LOOSE CLOTHING HAZARD ........................................................................... 1.8 PROTECTIVE CLOTHING ................................................................................ 1.3 SAFETY PRECAUTIONS, GENERAL ....................................................... 1.3, 1.4 SAFETY PRECAUTIONS, OPERATING ................................................... 1.5, 1.6 SAFETY PRECAUTIONS, SERVICING ............................................................ 1.7 SAFETY SYMBOLS .......................................................................................... 1.2 SIGNAL WORDS............................................................................................... 1.2

Tigercat 726 Feller Buncher

Safety

SAFETY SYMBOLS

This safety-alert symbol is used throughout this manual and on labels on the machine to call your attention to areas in which carelessness or failure to follow specific procedures may result in personal injury and/or component damage or malfunction.

Understanding Signal Words DANGER DANGER identifies the most serious hazards where failure to follow listed procedures would result in a high probability of death or serious injury.

WARNING WARNING denotes a hazard exists which can result in serious injury or death if proper precautions are not taken.

CAUTION

CAUTION is used in areas where failure to follow listed procedures may cause personal injury, component damage or subsequent malfunction.

1.2

Tigercat 726 Feller Buncher

Safety

GENERAL SAFETY PRECAUTIONS

KEEP BACK 300 FEET

Remember that safety is a prime responsibility of all.

When approaching an operating machine on foot, stay at least 300 feet (90M) away until the operator recognizes your presence. Make sure that all harvesting equipment is shut down before advancing to the machine.

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.

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

Always avoid the discharge side of a felling sawhead.

A sawhead's high-velocity discharge of debris requires a safe separation distance.

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.

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.

Do not let an untrained person operate the machine.

Use the handrails and steps provided when mounting and dismounting from the machine. Do not climb onto or jump off the machine at any time. Do not use the steering wheel as handle when entering or leaving the cab.

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

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

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.

Avoid mounting or dismounting the machine in areas with slippery surfaces.

1.3

If this is not possible clean up or cover slippery surfaces with a non-slip material.

Tigercat 726 Feller Buncher

Safety overhanging electrical powerlines 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.

GENERAL SAFETY PRECAUTIONS continued

Maintain a distance of 10 ft. (3m) between the machine or boom and any power line carrying up to 50,000 volts or less.

Machines should be completely cleaned of debris at least daily, particularily around the engine exhaust components. Hydraulic oil leaks, excess grease, fuel and oil accumulation (including spillage) should be eliminated immediately. Machine should be washed completely at every major service.

Powerlines carrying more than 50,000 volts require a safety distance of 10 ft. (3m) plus 1/2 inch (10mm) for each addition 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.

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

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

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.

Inspect the machine daily for signs of damage, unusual wear, fluid leaks, or faulty operation. Repair or replace malfunctioning parts and systems immediately.

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

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

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

1.4

Tigercat 726 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 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.

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

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

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

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

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

Make sure that all of the controls are positioned as specified in the starting instructions in the operator's manual.

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

Sound the machine horn before starting the machine.

Never use the parking brake to slow down or stop the machine except in an emergency. Keep the brake properly adjusted at all times.

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

The operator’s seat is equipped with a seat belt. Use this belt at all times when operating the machine.

Start the engine according to the instructions in this manual.

1.5

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

Tigercat 726 Feller Buncher

Safety

OPERATING SAFETY PRECAUTIONS continued

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

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

Use only prearranged and approved signalling practices.

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

Do not carry passengers either in the cab or anywhere else on the machine.

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

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

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

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

When parking the machine; • Park on level ground only and engage the swing brake.

• Do not park on a hillside or incline.

• Lower felling attachment onto level ground.

• Stop the engine and relieve any hydraulic pressure trapped in the system.

1.6

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.

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

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

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

Tigercat 726 Feller Buncher

Safety

SERVICING SAFETY PRECAUTIONS

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.

Conduct maintenance inspections at least as frequently as recommended in section 3 of the operator's manual.

Never use your bare hand to check for fluid leaks.

When servicing or repairing equipment, shut the engine down, and disconnect the positive (+) battery cable from the battery.

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

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

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

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.

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 and relieve trapped pressure (from accumulator) by operating brake pedal and/or joystick several times before performing work on components, or disconnecting any hoses.

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 current does not pass through bearings, especially the pivot bearing. Also, the battery positive terminal must be disconnected.

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

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.

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Tigercat 726 Feller Buncher

Safety

SERVICING SAFETY PRECAUTIONS continued 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.

Always install 'T' handle retainer bolt.

Use only to support boom and felling head.

Do not use to set hydraulics pressures.

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

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

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.

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.

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

28-14A

Before working in the center joint area, install the frame articulation lock pin between the frames to prevent accidental articulation and injury.

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

WARNING Failure to follow these instructions could result in serious injury or death from crushing.

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

1.8

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.

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

Tigercat 726 Feller Buncher

Safety dislodged by vibration this smoldering debris can fall into other areas of the machine and thereby spread a fire.

FIRE PREVENTION

5. 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.

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.

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

7. Steam clean the engine, transmission, brake, fuel and hydraulic tank compartments of all equipment at least once a month or more frequently depending on logging conditions.

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.

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

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

1. Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT.

9. Shut down equipment immediately when a problem is suspected or smoke is detected.

2. Inspect the machine for any signs of fuel or hydraulic system leakage and check for worn or eroded fuel or hydraulic lines before starting up any equipment.

10. Park the machine at least 50 feet away from other equipment at the end of each shift.

3. Remove debris and blow out dust regularly from the air intake doors, engine radiator, hydraulic oil cooler and A/C condenser core to prevent overheating of the engine and hydraulics. Refer to CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR in SECTION 2 of the OPERATOR S MANUAL.

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

11. Turn the battery disconnect switch to OFF at shut down to avoid loss by electrical short.

13. Once a fire has started on a machine hoses will quickly burn through causing pressurized fluids (diesel fuel, hydraulic oil, etc.) to fuel the fire. NEVER leave the machine parked with booms or arches suspended off the ground, as they will inject hydraulic oil into the fire if a supporting hose burns through.

4. Blow off all debris and dust 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 depending on logging conditions.

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

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

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

16. Use only nonflammable solutions for cleaning the machine or components.

1.9

Continued on page 10

Tigercat 726 Feller Buncher

Safety WHAT TO DO IN CASE OF A MACHINE FIRE

FIRE PREVENTION continued

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.

If the machine is in a dangerous position, attempt to move to a safe position. Lower working attachment to the ground.

Shut the engine off.

Activate the fire suppression system*

EQUIPMENT FIRES ADVERSELY EFFECT YOUR ABILITY TO LOG, MAY INCREASE YOUR INSURANCE PREMIUMS DRAMATICALLY OR PREVENT YOU FROM OBTAINING INSURANCE COVERAGE AT ALL.

Radio or call for help (as appropriate).

Exit the machine taking fire extinguisher or water hose (if applicable) with you.

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

WHAT ELSE TO DO BEFORE YOU EXPERIENCE A FIRE

If you can safely do so, attempt to extinguish the fire.

Ensure that you are familiar with emergency procedure in the event of a fire.

A dry chemical fire extinguisher should be used first, if available.

Ensure that your fire suppression system* is charged and functional.

Use the PASS method with most extinguishers.

Ensure that any hand held fire extinguishers are charged and functional.

Pull the pin. This will allow you to discharge the extinguisher.

Ensure that any stored water systems on the machine are charged and functional.

Ensure that the nozzle of any hand held extinguishers available at the work site fits within the access holes in the doors of the machine.

Aim at the base of the fire. If you aim at the flames (which is frequently the temptation), the extinguishing agent will fly right through and do no good. You want to hit the fuel.

Squeeze the top handle or lever. This depresses a button that releases the pressurized extinguishing agent in the extinguisher.

Sweep from side to side until the fire is completely out. Once the fire is out, keep an eye on the area in case it re-ignites.

Continued from page 9

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

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

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

You should have a dry chemical extinguisher rated ABC and a pressurized water extinguisher rated A. Prevent the fire from happening by ensuring that the machine is cleaned regularly and all systems are well maintained. *NOTE: Dry chemical fire suppression systems are offered by Tigercat as an optional installation on some of the Tigercat product lines. Please disregard any references made to fire suppression systems if not installed on your machine.

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Tigercat 726 Feller Buncher

Safety WHAT TO DO AFTER A FIRE

FIRE PREVENTION continued

20229A

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

If you are unable to open the access door(s), but can safely reach the fire extinguisher access hole, place the nozzle of the fire extinguisher into the appropriate fire extinguisher access hole and discharge the extinguisher.

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

Use the pressurized water hose supplied with the machine (if applicable) or a pressurized water extinguisher (if available) after the discharge of a dry chemical extinguisher or suppression system* to remove heat build up from the area. A fire suppressed by a dry chemical powder may re-ignite with the latent heat of any debris in the area.

Remain with the machine until help arrives to ensure that the fire does not re-ignite.

1.11

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

Ensure that the cause of the fire is determined and all appropriate repairs are completed before returning the machine to work.

Ensure that the fire suppression system* is properly serviced and returned to a functional state (if applicable).

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

Tigercat 726 Feller Buncher

Safety

1.12

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

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

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

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using high speed disc saws safely FORWARD:

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

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

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

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

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

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using high speed disc saws safely

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

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

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

THE DANGERS

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

• Soil particles are thrown from the ground.

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

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

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

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

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

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using high speed disc saws safely

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

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

THROW ANGLE

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

•

•

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

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using high speed disc saws safely

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

THROW ANGLE

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

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

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

THROW ANGLE

NUDGED LOG WILL NOT CONTACT SAW TEETH.

• EXTRA LENGTH OF SNOUT WILL INTERCEPT PORTION OF THROWN MATERIAL.

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

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using high speed disc saws safely Housing types cont.

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

A CHIP ESCAPE PORT CAN ALLOW THROW BEHIND THE MACHINE

REAR

FRONT

FIGURE 6a

FIGURE 6b

FIGURE 6c

FIGURE 6: ADDITIONAL OPENING IN THE HOUSING SKIRT.

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

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

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

6

using high speed disc saws safely COMMENTS AND INSTRUCTIONS

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

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

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

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

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

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

7

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

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

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

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

8

using high speed disc saws safely

Tigercat

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

FIGURE 7a

PLAN VIEW OF MACHINE SHOWING CLOCKWISE AND COUNTERCLOCKWISE BLADE ROTATION

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

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

9

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using high speed disc saws safely Comments and Instructions cont.

Tigercat

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

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

SLAB

•

SLAB

• FE

ED

IN

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

TH DIR ROW EC TIO N

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

FIGURE 8

THROW ENGAGEMENT DISTANCE FELLING HEAD MOVING INTO SLAB/LOG

®

SLAB

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

• •

FIGURE 8b SIDE VIEW

FEED IN

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

10

FIGURE 8c TOP VIEW

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

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

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

• FE

ED

IN

FELLING HEAD MOVING INTO LOG PILE

FIGURE 9a: HOW A LOG CAN BE THROWN LIKE A SPEAR SAW HOUSING WITHOUT SNOUTS AND BLADE TEETH PROTRUDE AHEAD OF THE HOUSING.

SMALL LOG

THROW ENGAGEMENT DISTANCE LOG PILE

FEED IN

•

•

A SAW HOUSING WITHOUT SNOUTS ALLOWS A LONG THROW ENGAGEMENT DISTANCE

FIGURE 9b SIDE VIEW

FIGURE 9c TOP VIEW

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

FEED IN

11

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

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

UNCUT TREE OR STUMP BACKUP THROW ENGAGEMENT DISTANCE

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

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

FELLING HEAD MOVING INTO LOG

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

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

FELLING HEAD MOVING INTO STUMP (FEED SPEED)

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

12

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

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

THROW GAP

FIGURE 12: SAW BLADE THROW GAP

13

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

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

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

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

FIGURE 13: SAW BLADE ENTRANCE AND EXIT SPACE

14

using high speed disc saws safely Comments and Instructions cont.

Tigercat

®

This information is offered by Tigercat as part of interim action to make saw heads safer. It is based on what has recently been reported from the field and on tests conducted on proving grounds.

Tigercat is continuing to do design and testing of tree felling machinery towards achieving greater safety in the woods. Tigercat would be thankful for written reports describing any unsafe happenings, including near misses, in the use of felling heads and their carriers.

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

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

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

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

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

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

Do not over speed the blade rpm.

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

Do not neglect tooth fastening inspection, maintenance and replacement.

Do not neglect to repair worn or damaged saw housings.

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

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

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

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

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

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

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

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

Do not select and operate heads that throw rearward.

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

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

15

using high speed disc saws safely

Tigercat

16

®

Tigercat 726 Feller Buncher

SECTION 2 - CONTROLS & OPERATION CONTENTS - SECTION 2 ACCUMULATING ARMS ................................ 2.2 AIR CLEANER ................................................ 2.9 AIR CONDITIONER/HEATER ......................... 2.5 AM/FM STEREO CASSETTE ......................... 2.4 ARTICULATION LOCK PIN........................... 2.14 BATTERY DISCONNECT SWITCH ................ 2.3 BOOM LIFT ..................................................... 2.2 BOOM TILT ..................................................... 2.2 BRAKE, PARKING .......................................... 2.3 BRAKES .......................................................... 2.2 CAB, OPERATOR'S ........................................ 2.2 CARE OF THE MACHINE ............................. 2.12 CENTER JOINT LOCK PIN ........................... 2.14 CIGARETTE LIGHTER ................................... 2.7 CLAMP ARMS ................................................. 2.2 CLEAN BETWEEN RAD. AND OIL COOLER 2.13 CLEANING LEXAN WINDOWS .................... 2.12 COMPATIBLE CLEANING AGENTS ............. 2.13 CONTROLS - CAB .......................................... 2.2 CREEP ............................................................ 2.6 DIFFERENTIAL LOCK - FRONT ..................... 2.6 DIFFERENTIAL LOCK - REAR ....................... 2.6 DOME LIGHT .................................................. 2.3 DRIVE CONTROL ........................................... 2.2 EMERGENCY EXITS ...................................... 2.4 ENGINE COMPARTMENT .............................. 2.8 ENGINE COOLANT TEMPERATURE ............. 2.6 ENGINE OIL PRESSURE ............................... 2.6 ENGINE RPM. ................................................. 2.2 ETHER STARTING AID (OPTIONAL) ............ 2.7 FAN ................................................................. 2.3 FELLING HEAD ............................................ 2.12 FILL PRESSURIZED WATER SYSTEM ......... 2.4 FILTER, FRESH AIR - A/C UNIT ..................... 2.5 FILTER, RE-CIRCULATING AIR ..................... 2.5 FILTER, RE-CIRCULATING AIR - A/C UNIT .. 2.5 FUEL TANK ..................................................... 2.8 GAUGE - ENGINE COOLANT TEMP. ............ 2.6 GAUGE - ENGINE OIL PRESSURE ............... 2.6 GAUGE - HYDRAULIC OIL TEMP. ................. 2.7 GAUGE - SAW CIRCUIT PRESSURE ............ 2.7 GEAR SHIFT ................................................... 2.3 HAND FILL PUMP ........................................... 2.8 HEATER/AIR CONDITIONER ......................... 2.5 HORN .............................................................. 2.6

JULY/95

HOURMETER ................................................. 2.7 HYDRAULIC OIL RESERVOIR ....................... 2.8 HYDRAULIC OIL TEMPERATURE ................. 2.7 IGNITION ........................................................ 2.7 INSTRUMENT PANEL .................................... 2.6 JOYSTICK ....................................................... 2.2 LEXAN WINDOWS ........................................ 2.12 LIFT BOOM CYLINDER LOCK ..................... 2.14 LIGHTER ......................................................... 2.7 LOCK PIN, ARTICULATION .......................... 2.14 MACHINE PREPARATION ........................... 2.11 OPERATING MACHINE ................................ 2.10 PARKING BRAKE ........................................... 2.3 PILOT LIGHT - SAW ....................................... 2.6 PRE-START CHECKS .................................. 2.10 PRESSURIZED WATER SYSTEM .................. 2.4 PRESSURIZED WATER SYSTEM VALVE ..... 2.4 PUMP, HAND FILL .......................................... 2.8 SAW CIRCUIT PRESSURE GAUGE .............. 2.7 SAW PILOT LIGHT ......................................... 2.6 SAW SWITCH ................................................. 2.6 SEAT ............................................................... 2.5 SKYLIGHT/EMERGENCY EXIT ...................... 2.4 STARTING ENGINE ...................................... 2.10 STARTING IN COLD WEATHER .................. 2.11 STEERING WHEEL ........................................ 2.2 STEREO CASSETTE ...................................... 2.4 STOPPING ENGINE ..................................... 2.12 SWITCH - BATTERY DISCONNECT .............. 2.3 SWITCH - CREEP ........................................... 2.6 SWITCH - DIFFERENTIAL LOCK - FRONT .... 2.6 SWITCH - DIFFERENTIAL LOCK - REAR ...... 2.6 SWITCH - ETHER STARTING AID (OPT.) .... 2.7 SWITCH - HORN ............................................ 2.6 SWITCH - IGNITION ....................................... 2.7 SWITCH - SAW ............................................... 2.6 SYSTEM TEST AND WARM-UP ................... 2.11 THROTTLE CONTROL ................................... 2.2 TOWING INSTRUCTIONS ............................ 2.13 TRAVEL SPEEDS ........................................... 2.3 TRAVELLING ................................................ 2.12 VENT, CAB AIR ............................................... 2.3 VOLTMETER .................................................. 2.6 WATER, PRESSURIZED SYSTEM ................. 2.4 WATER SHUT-OFF VALVE ............................ 2.4

Tigercat 726 Feller Buncher

Controls and operation 5.

CONTROLS - CAB 1.

STEERING WHEEL Steering "speed" can be controlled by turning the wheel either PARTIALLY (for slower response) or FULLY (for faster response) to the left or right.

JOYSTICK CONTROL LEVER Boom Lift

1

Move the joystick BACK to RAISE the boom.

5

Move the joystick FORWARD to LOWER the boom.

6

Boom Tilt Move the joystick to the RIGHT to tilt the felling head FORWARD.

JS-1

Move the joystick to the LEFT to tilt the felling head BACK. ThumbSwitch - Accumulating Arms Push the toggle switch to the LEFT to OPEN the accumulator arms.

Push the toggle switch to the RIGHT to CLOSE the accumulator arms.

4

3

2

20-22A

6.

THROTTLE CONTROL For HIGH IDLE engine RPM push button on end of throttle control and PULL out completely.

For LOW IDLE engine RPM push button in and PUSH in throttle control completely.

NOTE: All harvesting operations should be performed at HIGH idle.

Maintaining Correct Engine RPM. It is most important that the RPM of the engine be correct at all times: Caterpillar Engine Low Idle 1000 ± 25 RPM. (No Load) High Idle 2200 ± 25 RPM. (No Load)

20-21A

2.

3.

RIGHT FOOT CONTROL - Drive Control

Low Idle 800 ± 25 RPM (No Load)

Press the RIGHT foot pedal to drive FORWARD.

High Idle 2200 ± 25 RPM (No Load)

Press the LEFT foot pedal to drive in REVERSE.

NOTE:

NOTE: A back-up horn will sound when travelling in reverse.

When setting pressures, increase Low Idle to 1000 RPM with throttle control.

CENTER FOOT CONTROL - Brakes

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

Depress the foot pedal to apply the hydraulic brakes in the rear axle.

4.

Cummins 'C' Series Engine

LEFT FOOT CONTROL - Clamp arms Press the LEFT foot pedal to OPEN the clamp arms.

Press the RIGHT foot pedal to CLOSE the clamp arms.

NOTE: Controls can be re-arranged to suit customer individual requirements 2.2

The engine RPM should be checked regularly with a calibrated hand tachometer.

WARNING: Under no circumstances allow the high idle engine RPM to vary from the recommended settings; particularly faster, as serious damage to the pumps will result.

Tigercat 726 Feller Buncher

Controls and operation

7 10

21-2A

7.

11

PARKING BRAKE PULL up on handle to ENGAGE parking brake.

PUSH down on the handle to DISENGAGE parking brake.

This parking brake operates the disc brake caliper on the transmission output shaft.

NOTE:

21-1A

The parking brake must be in the ENGAGED position to START the engine, and in the DISENGAGED position to DRIVE the machine, or START up the saw.

Keep the brake properly adjusted at all times.

See SECTION 9 in Operator/Service manual.

10. LIGHT - Dome The switch is located on the side of the dome light fixture.

11. FAN The two speed control for the fan is located on the fan.

12. LEVER - Gear Shift

9

Thetransmission has two drive ranges (or gears).

PUSH down on lever to engage LOW gear.

8 12

20-17A

8.

SWITCH - Battery Disconnect

20-23A

This manually operated switch completely disconnects all electrical circuits on the machine from the battery.

WARNING

Travel speeds: Forward and Reverse Speeds:

Before leaving the machine unattended, always lower the felling attachment to the ground, engage the parking brake and turn the battery disconnect switch off.

9.

PULL up on lever to engage HIGH gear.T h e mid position is NEUTRAL

LOW gear ........... 0 - 4.7 mph HIGH gear .......... 0 - 9.6 mph Above speeds are when using 28L x 26 tires.

VENT Opens to allow venting of stale air from cab during air conditioning or heating.

2.3

CAUTION: Do not change gear when the machine is moving. All harvesting should be done in first gear.

Tigercat 726 Feller Buncher

Controls and operation

CAUTION Never remove fill plug before depressurizing tank or injury may result.

b.

Close water shut-off valve and slowly remove fill plug in top of water tank.

c.

Fill tank with water. (Tank capacity is approx.

10.5 gals.) NOTE: When temperatures below 32°F are anticipated, add Non toxic R. V. Antifreeze or other suitable antifreeze solution to the water.

d.

Install plug.

e.

Add air to water tank by connecting air hose to air charge valve. Pressurize to 60 psi as indicated on pressure gauge.

RELIEF VALVE OUTLET

13

AIR CHARGE VALVE

WATER SHUT-OFF VALVE FROM HOLDING TANK OUTLET CONNECTION

WATERVLV

PRESSURIZED WATER SYSTEM CONTROL VALVE 13. VALVE - Pressurized Water System Turn the hand operated ball valve to the ON position to draw water from the 10.5 gallon 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.

14 76-18A

14. SKYLIGHT/EMERGENCY EXIT Provides tree top visibility and serves as a third cab exit should the two doors become blocked.

There are two retaining handles on the inside and two on the outside to allow removal of the hatch from either side. These handles should only be HAND TIGHTENED, to allow them to be unscrewed in case of an emergency.

The pressure gauge on the valve should read no less than 60 psi.

FILL AND CHARGE PRESSURIZED WATER SYSTEM a.

Before adding water to tank release any remaining air pressure by opening shut-off valve and expelling water via the hose at the outlet connection.

15

•• CAUTION 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.

69-12

15. AM/FM STEREO CASSETTE 2.4

Tigercat 726 Feller Buncher

Controls and operation with interior air from the cab. The filter is located behind the cab and can be serviced by removing the housing cover. The filter should be inspected on a regular basis and cleaned/replaced when severely plugged or when wet.

16. SEAT. Multiple adjustments to suit operator comfort: Backrest to 28° rearward.

Front and back seat cushion height.

Seat only less joystick armrest.

Seat and joystick armrest.

Suspension, weight adjustment dial.

Left armrest angle.

Joystick armrest pivoted.

A seatbelt is provided.

30

31

32

• 21 15

22

23

33

• •

•

24

•

• 34

68-2

35

30. AIR CONDITIONER/HEATER (LATER STYLE) 25

31. FRESH AIR OR RE-CIRCULATE CONTROL 32. AIR CONDITIONER ON/OFF SWITCH 33. HEATER CONTROL

20-X

34. FAN ON/OFF/SPEED CONTROL

20. AIR CONDITIONER/HEATER (EARLIER STYLE)

35. A/C TEMPERATURE CONTROL

21. FAN SPEED: OFF/LOW/MED/HIGH LEVER

30

22. FRESH - RE-CIRCULATE LEVER •

23. HOT - COOL LEVER 24. HEAT - A/C SWITCH 25. FILTER, RE-CIRCULATING AIR - A/C UNIT When the control lever (22) is in the RECIRC position, air in the cab is drawn into the A/CHEATER unit via this filter and re-circulated.

The filter should be inspected and cleaned on a regular basis.

26

•• 36 68-7 93-11A

36. FILTER, RE-CIRCULATING AIR - A/C UNIT

26. FILTER, FRESH AIR - A/C UNIT When the control lever (22) is in the FRESH position, outside air is drawn into the cab air conditioning unit through this filter and mixed 2.5

When the control knob (31) is in the RECIRCULATING position (rotated to the right), air in the cab is drawn into the A/C-HEATER unit via this filter and re-circulated. The filter should be inspected and cleaned regularly.

Tigercat 726 Feller Buncher

Controls and operation On later machines an indicator light is installed and will be ON when the switch is in the ON position.

4.

SWITCH & LIGHT - Differential Lock - Rear Placing this toggle switch in the ON position will lock up the rear axle differential and provide drive torque to both rear wheels.

On later machines an indicator light is installed and will be ON when the switch is in the ON position.

NOTE: Use differential locks ONLY when additional traction is needed.

5.

SWITCH - Creep Placing this toggle switch in the ON position will put the hydrostatic drive into CREEP mode.

Creep mode is when the motor is set at maximum displacement, providing increased torque and reduced speed.

SM09B

6.

SWITCH - Horn

7.

GAUGE - Engine Oil Pressure The oil pressure should be greatest after starting a cold engine. It should operate between 35 and 70 psi. when the engine is running at rated engine speed, with SAE 10W30 oil and at operating temperature. If the gauge registers less than the above with engine running at high idle, check the engine oil level. If pressure drops below 18 psi a warning light in the gauge will come ON, In this case shut the machine down immediately.

INSTRUMENT PANEL

INSTRUMENT PANEL 1.

SWITCH - Saw Use this switch to turn the saw ON or OFF. Place throttle in HIGH IDLE and Parking brake OFF before turning saw ON.

Oil pressure must register on the gauge immediately after starting the engine.

NOTE: The saw will not start if the parking brake is not fully off. If the engine is turned off with the saw switch in the ON position, the saw will not start up when the engine is restarted. The saw switch must be turned off and then back on for the saw to start.

2.

NOTE: During low idle rpm. the oil pressure will be low.

This is not an abnormal condition but must be closely monitored.

8.

Displays the current engine coolant temperature.

It should normally indicate between 190°F and 210°F. If temperature goes beyond 215 °F a warning light in the gauge will come ON. If temperature goes beyond 220°F check for plugged radiator or debris build up in space between oil cooler and radiator Do not continue to operate machine.

PILOT LIGHT - Saw Comes on when saw is operating. The light may not be on even though the saw switch is in the on position, due to the safety interlocks mentioned above.

3.

SWITCH & LIGHT - Differential Lock - Front Placing this toggle switch in the ON position will lock up the front axle differential providing drive torque to both front wheels.

2.6

GAUGE - Engine Coolant Temperature

9.

METER - Voltmeter Normal operating range is between 12 - 13.5 volts. A reading in excess of 15 volts indicates

Tigercat 726 Feller Buncher

Controls and operation

a possible faulty voltage regulator. A reading less than 12 volts indicates a possible faulty battery or alternator. If the reading goes below 10.5 volts or above 15.5 volts a warning light in the gauge will come ON. 10. GAUGE - Hydraulic Oil Temperature Displays the current hydraulic oil temperature registered in the hydraulic reservoir.

Cigarette lighter is supplied.

13. SWITCH - Ether Starting Aid (Optional) When connected, pushing this switch injects ether into the air intake of the engine to aid cold weather starting.

14. METER - Hour

If the oil temperature reaches 185°F a warning light in the gauge will come ON. If the temperature goes beyond 180°F check the following:

Powered through the engine oil pressure switch, this meter records the total number of hours the engine has run.

20. GAUGE - Saw Circuit Pressure

• Plugged oil cooler • Debris build up in space between cooler and radiator

12. LIGHTER

When the saw switch is put into the ON position, (engine at high idle) the gauge will show an initial value of 3500 - 3600 psi for the first 10 seconds,

oil

• Malfunction in a hydraulic circuit

20

• High loads on the hydraulic system • Low hydraulic oil level Operation above 180°F will shorten hydraulic component life.

If the temperature reaches 210°F do not continue to operate the machine.

11. SWITCH - Ignition Later machines: This is a three-position switch labelled OFF/ IGN/START. OFF Position - All electrical power through the ignition switch is turned “OFF”

21-24A

then as the blade speeds up, drop to approx.

3100 psi. for a further 12 to 15 seconds. After an elapsed time of approx. 30 seconds the gauge reading will drop to approx. 1200 - 1500 psi. and hold, as the blade reaches full speed.

IGN Position - Connects the battery to all funtions. Used for normal machine operation.

START Position - Used to energize the starter motor to start the engine. NOTE: The parking brake must be in the ON position to start the engine.

Earlier machines:This is a four-position switch labelled ACC/OFF/IGN/START. OFF Position - All electrical power through the ignition switch is turned “OFF” ACC Position - Connects the battery to the back up horn, differential locks, accumulator arms, creep, dome light, fan, heating/air conditioning and optional headlight switch.

During cutting operations the operator will see the gauge values rise as the blade slows down due to cutting, and fall as the blade speeds up.

A reading of 1500 psi or above indicates that the blade has not attained full speed from the previous cut or has jammed. Further cutting may be delayed until the pressure drops to prevent stalling.

WARNING When leaving the cab to check the saw blade or other parts of the felling head, Observe all safety rules and regulations listed in both this manual and the attachment manufacturers manual.

IGN Position - Used for normal machine operation.

START Position - Used to energize the starter motor to start the engine. NOTE: The parking brake must be in the ON position to start the engine.

_________________________________________ 2.7

Tigercat 726 Feller Buncher

Controls and operation

ENGINE COMPARTMENT

1

76-6A

1.

FUEL TANK Located at the right rear of the machine, the fuel tank incorporates a dipstick under the filler cap and has a capacity of 90 gallons.

3

726HANDP

3.

HYDRAULIC HAND FILL PUMP The hydraulic hand fill pump, located at the rear of the machine is used for adding oil to the hydraulic oil reservoir.

2

To add oil to the reservoir, clean suction hose and remove plug. Open oil fill shut-off valve, insert end of suction hose into supply drum and operate the pump. The oil is pumped directly into the hydraulic reservoir via a return filter.

The pump should always be operated at a medium speed with steady motion. Pumping too fast may cause oil to by-pass oil filter.

IMPORTANT: Close shut-off valve after filling.

76-13A

2.

HYDRAULIC OIL RESERVOIR Located at the left rear of the machine, the hydraulic reservoir has a capacity of 85 gallons.

A sight gauge accessible through the rear door indicates the HIGH and LOW level of the hydraulic oil.

Always keep the hydraulic oil between these calibrations. A low hydraulic oil level can result in severe damage to pumps.

1393A

2.8

Tigercat 726 Feller Buncher

Controls and operation IMPORTANT STEPS TO FOLLOW 1. Release the seal 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.

4

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

4. Always clean the inside of the outlet tube.

76-11A

4.

AIR CLEANER The air cleaner on this machine uses 2 filter elements, a primary element and a safety element.

5. Check your old filter, It can help you detect foreign material on the sealing surface that is causing leakage.

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.

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

A filter restriction indicator is mounted to the output side of the filter, this should show green when the engine is running at high RPM. In addition to the LUBRICATION AND MAINTENANCE SCHEDULE in section 3 of this book, 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 is actually 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.

IMPROPER SERVICING Engine exposure to dust during servicing is the largest single reason for engine damage due to dust.

Abrasive dust can easily enter the intake system once the air cleaner cover and protective filter element is removed for replacement. The safety element does reduce this risk but it should also be replaced at every third primary element change.

2.9

8. Check connections and ducts for air tight fit.

Ensure that all clamps, bolts and connections are tight. Leaks here send dust directly to the engine. ________________________________________

Tigercat 726 Feller Buncher

Controls and operation

OPERATING MACHINE

STARTING ENGINE:

Before operating the machine, follow the PERIODIC MAINTENANCE instructions, (section 3 in this manual). Also refer to the Operator's Manual for the Diesel Engine supplied with this machine.

CAUTION:

PRE-START CHECKS

Allow a cold engine to warm up at LOW IDLE for at least five minutes before applying any load.

Check all gauges often during the warmup period.

After engine has started, keep engine speed low until engine oil pressure registers on gauge. If it does not register within 10 seconds, stop engine and investigate cause.

1.

Ensure ignition switch and saw switch are in the OFF position and set parking brake ON.

2.

Check fuel level (Dipstick provided).

1.

3.

Check hydraulic oil level, the level should be between the HIGH and LOW marks on the level gauge.

Move throttle control to the LOW IDLE position, and set parking brake ON. NOTE: The engine will not turn over unless the parking brake is on.

2.

Turn ignition switch to the start position to crank engine.

4.

Check the engine oil level. The level of the oil must be between the ADD and the FULL marks on the dipstick.

5.

Check tension and condition of all engine belts.

6.

Check pump drive gearbox oil level (Dipstick provided)

7.

Check transmission oil level (dipstick).

8.

Check the engine coolant level.

9.

Clean radiator, oil cooler and screens.

CAUTION Do not start engine by shorting across starter terminals. start engine only from operator's seat.

RESTARTING AN ENGINE THAT HAS RUN OUT OF FUEL If the engine runs out of fuel, the fuel line must be primed:

10. Drain water from fuel line water separator.

11. Check air intake pre-cleaner.

1.

Refill fuel tank completely.

12. Be sure that all cover guards and doors are securely fastened.

2.

Remove engine fuel filter and fill with clean fuel. Not required with fuel lift pump.

13. Check tire pressures.

3. Bleed the system according to engine manual procedures.

14. Fill and charge pressurized water tank gals.).

(14

4.

15. Check parking brake for proper operation.

16. Check wheel bolts for tightness.

Crank engine until it starts. If it fails to start after 20 seconds, stop and wait for 2 minutes before trying again.

NOTE: The use of ether to aid in starting the engine is not recommended.

CAUTION: To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturers operator's manual.

Continued on page 11

2.10

Tigercat 726 Feller Buncher

Controls and operation

Continued from page 10

CAUTION: If any system fails to respond to the controls, stop the warm-up procedure and call a mechanic, otherwise serious damage to pumps and other components could result.

STARTING IN COLD WEATHER (WHEN APPLICABLE WITH OPTIONAL STARTING AID KIT) Cold temperatures require the use of the engine block heater and the hydraulic oil heater. The use of an ether starting aid may also be required.

CAUTION: Cold startups can result in pump failure, refer to "HYDRAULIC OIL CHART" for recommended oil viscosities and temperature ranges.

Assuming machine was parked on level ground at last shutdown: (a) Start engine. (b) Ensure gauges and war ning lights are indicating normal operating conditions. (c) Check that all personnel are clear of the machine.

Preheating of hydraulic oil is recommended as standard procedure in cold weather.

If a (ether) starting aid is being used;

(d) Raise throttle control to the MID position. (e) Slowly raise and lower the boom and the main boom, check for proper operation.

(a) Move throttle control to the HALF IDLE position.

With the felling head raised slightly off the ground:

(b) Crank engine with star ter one or two revolutions before injecting starter fluid.

(f) Operate the accumulator and clamp arms and check for proper operation.

(c) Momentarily depress ETHER push button switch, using short "bursts" while cranking the engine at the same time. Stop injecting fluid after engine starts. If engine begins to die during the first few minutes, inject another "shot" of fluid.

(g) Tilt the felling head forward and back and check that it is operating correctly.

CAUTION: To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds. Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturers operator's manual. (d) Once the engine is running evenly and the engine oil pressure is at NORMAL, move the throttle control to the LOW IDLE position and allow to run for approx. 5 minutes or until the engine coolant temperature gauge begins to register. If the engine oil pressure does not register on the gauge within 10 seconds stop the engine. (e) Before applying any load to the engine proceed with MACHINE PREPARATION.

(h) Steer the machine to the left and right. (i)

When cold weather conditions exist, continue the process of warming up the hydraulic system by repeating steps (e) thru'’ (h) several times.

As the hydraulic system warms up, engine speed can be increased gradually to the HIGH IDLE position.

(j)

Turn saw on.

(k) Observe all boom operations. If any operations are not operating as they should, take the necessary steps to correct the problem.

After completion of the warm-up and system testing, rest the felling head on the ground and turn the saw OFF. CAUTION: Ensure saw blade rotation has stopped before leaving the cab. (l)

Put the parking brake ON.

(m) Move the throttle control to the LOW IDLE position.

MACHINE PREPARATION SYSTEM TEST AND WARM-UP Before commencing harvesting operations, follow steps (a) thru (n) to accomplish the following:

(n) Leave the cab and visually check hose connections and cylinders for leaks. Check under the machine for oil leaks.

• Warm up the hydraulic system.

• Test all systems for proper operation.

Continued on page 12

• Inspect for hydraulic oil leaks.

2.11

Tigercat 726 Feller Buncher

Controls and operation

Continued from page 11

CARE OF THE MACHINE

TRAVELLING (BOOM RAISED)

1.

(2) Disengage parking brake. NOTE: Machine will not move if the parking brake is not fully off.

Ensure that all fluid levels are always at the proper level. Use the preventative maintenance schedule in SECTION 3 of this manual .

2.

(3) Move throttle control to the HIGH IDLE position.

Follow proper procedure for cleaning windows described in this section.

3.

(4) Operate the drive foot pedal to move the machine forward or reverse.

Apply grease to all lubrication points at required intervals.

4.

Do not apply load to a cold engine.

5.

Close and secure all doors and access covers.

6.

Do not allow branches, twigs, leaves or pine needles to build up around radiator intake doors or anywhere else on the machine. Clean frequently but at least once daily.

7.

Always harvest trees in low gear.

8.

Be sure that the felling head is resting on the ground before servicing or parking the machine.

(1) Select appropriate drive gear. NOTE: All harvesting should be done in low gear.

STOPPING ENGINE: CAUTION: Stopping the engine immediately after it has been working under load can result in overheating and premature wear of the engine components. Follow the stopping procedure outlined below to allow the engine to cool.

1.

Park machine on level ground and rest felling head on the ground.

2.

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

CLEANING INSTRUCTIONS FOR LEXAN WINDOWS 1. Rinse with lukewarm water.

2. Using a soft cloth or sponge, gently wash the sheet with a mild solution of soap or detergent and lukewarm water. DO NOT scrub or use brushes or squeegees.

4.

Do not race engine before shut-off.

3. Rinse with clean lukewarm water.

5.

Set parking brake switch to ON.

6.

Stop engine by turning ignition switch to the OFF position.

4. Dry thoroughly with a chamois or moist cellulose sponge to prevent water spotting.

To remove wet paint, glazing compound or grease,

FELLING HEAD OPERATING INSTRUCTIONS AND SAFETY PRECAUTIONS 1.

All tree harvesting should be carried out with creep switch in ON position.

2.

See felling head manufacturers manual for proper operation of the felling head.

10-03A

rub lightly (not in direct sunlight) with a good grade of VM&P naphtha, isopropyl alcohol or butyl cellosolve (2-Butoxy Ethanol), then wash and rinse thoroughly.

DO NOT USE GASOLINE, Gasoline or oil will cause uncoated LEXAN to become opaque. MARGARD

2.12

Tigercat 726 Feller Buncher

Controls and operation

coated lexan will start to become opaque around the edges and creep in.

CLEAN BETWEEN RADIATOR AND OIL COOLER

Removing Hairline Scratches

Check enclosed space between Radiator and Oil cooler for debris buildup.

It is recommended in the P r e v e n t i v e maintenance schedule that this be done every 125 hours.

Scratches and minor abrasions can be removed or minimized by using a mild automobile polish. Three such products that tend to polish and fill scratches are Johnson Paste Wax, Novus Plastic Polish #1 & #2, and Mirror Glaze Plastic Polish. It is suggested that a test be made on a sample of LEXAN sheet with the product selected and that the polish manufactures instructions be followed.

Some Important Don’ts DO NOT use abrasive or highly alkaline cleaners on LEXAN sheet products.

Never scrape LEXAN sheet products with squeegees, razor blades or other sharp instruments.

Benzene, gasoline, oil, acetone or carbon tetrachloride should never be used on LEXAN sheet products.

DO NOT clean LEXAN sheet products in hot sun or at elevated temperatures.

To access this area remove both cover plates on each side of the engine enclosure and thoroughly clean between the Radiator and the Oil cooler.

Reinstall cover plates.

NOTE; Do not perform harvesting operations with cover plates removed.

COVER PLATE (RIGHT SIDE SHOWN)

45-1

Compatible Cleaning Agents - Aqueous Solutions of Soaps and Detergents

TOWING INSTRUCTIONS

Formula 409 Top Job Freon T.F. VM&P grade Naphtha Joy Windex with Ammonia D Palmolive Liquid GRAFFITI REMOVAL (A) Butyl Cellosolve (For removal of paints, marking pen inks, etc.) The use of masking tape, adhesive tape or lint removal tools works well for lifting off old weathered paints.

(B) To remove labels, stickers, etc., the use of kerosene, VM&P Naphtha, or petroleum spirits is generally effective. When the solvent will not penetrate sticker material, apply heat (hair dryer) to soften the adhesive and promote removal.

GASOLINE SHOULD NOT BE USED.

A malfunction of the machines equipment may make towing necessary.

Towing is only recommended over short distances. It is always better to make repairs at the point where the machine is parked when-ever possible.

1.

To facilitate towing, the transmission must be placed in NEUTRAL, this will disconnect the wheels from the hydraulic motor.

CAUTION: Never tow a machine in gear. If the machine is subjected to hard pulling while in gear, the extreme high forces created will cause damage to the hydraulic components in the hydrostatic drive system.

Continued on page 14

2.13

Tigercat 726 Feller Buncher

Controls and operation in chassis' and secure in place with both retaining pins.

Continued from page 13

2.

Raise the felling attachment off the ground.

3.

To allow the machine to steer while towing and prevent damage to the steering cylinders, cross hydraulic hoses on one of the steering cylinders. This will allow trapped oil to flow freely between the two steering cylinders, providing ease of turning with some dampening effect.

4.

The machine will be towed from the rear, making use of the towing lug at rear of machine underneath the bumper.

Ensure a vehicle of equal power and size is used for towing.

22-3A

When going downhill, be sure to use a holdback vehicle as the machine is now without any effective braking.

5.

When towing is completed, reconnect steering cylinder hoses in proper location.

4.

LOCK PIN IN LOCKED POSITION

After work is completed, slide lock pin into front chassis storage position and hold in place with retaining pin. Store second retaining pin in rear chassis tube socket. _______________________________________________________

___________________________

LIFT BOOM CYLINDER LOCK

ARTICULATION LOCK PIN 1.

Position machine on level ground and steer machine into a straight ahead position.

2.

Lower felling head to the ground, apply parking brake, stop engine and remove ignition key.

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

CAUTION To prevent movement of machine and possible serious injury. Install articulation lock pin before performing any work in the center joint area.

3.

Remove both retaining pins from the front and rear chassis and slide lock pin out of front chassis and into tube socket on rear chassis.

Line up holes at each end of lock pin with holes SFTY-ST

RETAINING PINS

FRONT CHASSIS

Completely raise lift boom and place 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 locknut through center hole.

Slowly lower boom until lock is securely held in place.

LOCK PIN

22-2A

LOCK PIN IN STORAGE POSITION 2.14

Tigercat 726 Feller Buncher

SECTION 3 - LUBRICATION & MAINTENANCE DEC. 95

CONTENTS - SECTION 3 FILTER AND LUBRICATION SCHEDULE .......... 3.6 GENERAL MAINTENANCE ................................ 3.3 HYDRAULIC OILS ............................................... 3.5 LUBRICATION SCHEDULE ................................ 3.6 NEW MACHINE MAINTENANCE FIRST 25 HOURS ............................................ 3.2 FIRST 500 HOURS .......................................... 3.2 PRESSURE SETTINGS 20" SAW, KOEHRING WATEROUS ................ 3.9 SCHEDULED MAINTENANCE ........................... 3.3 1000 HOURS ................................................... 3.5 125 HOURS ..................................................... 3.4 250 HOURS ..................................................... 3.4 500 HOURS ..................................................... 3.4 8 HOURS ......................................................... 3.3 FREQUENTLY ................................................. 3.3 SEASONAL ..................................................... 3.5 TIGHTENING POINTS ........................................ 3.2 TORQUE CHART ................................................ 3.7 TORQUE CHART, GENERAL ............................. 3.8 WHEELS, INSTALLING ....................................... 3.2

Tigercat 726 Feller Buncher

Lubrication and Maintenance • AXLE MOUNTING BOLTS

PREVENTIVE MAINTENANCE SCHEDULE FOR 726 FELLER BUNCHER

• WHEEL RETAINING BOLTS • CAB SECURING BOLTS • PIN RETAINERS • ANY OTHER LOOSE NUT, BOLT OR FITTING REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

NEW MACHINE MAINTENANCE

_______________________________________________________________________________________

IMPORTANT!

THE FIRST 500 HOURS:~

__________________________________________

WHEELS: REPLACE OIL IN:~

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 MORE COMPLETE INSTRUCTIONS ALSO REFER TO SECTION 8 OF THE OPERATOR/ SERVICE MANUAL. __________________________________________

• BOTH AXLE DIFFERENTIALS. AXLES SHOULD BE COMPLETELY FULL OF OIL. REFER TO SECTION 8 OF THE OPERATOR/SERVICE MANUAL FOR DRAINING INSTRUCTIONS. • PUMP DRIVE GEARBOX • TRANSMISSION

THE FIRST 25 HOURS:~

REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

CHECK:~ • OIL LEVEL IN BOTH AXLES DIFFERENTIALS AT FILLER PLUG. AXLES SHOULD BE COMPLETELY FULL OF OIL.

_______________________________________________________________________________________

REPLACE:~ • ENGINE FUEL FILTER • HYD.OIL PRESS. FILTER, CH. PUMP OUTLET • HYD. OIL RETURN FILTER, TRAV./STEER • HYD. OIL RETURN FILTERS, SAW/BOOM • HYD. OIL RETURN FILTER, PILOT

TIGHTENING POINTS:• ALL HYDRAULIC CONNECTIONS • HOSE CLAMPS • CENTER JOINT PIN SECURING BOLTS • TRANSMISSION SECURING BOLTS • ENGINE MOUNTING BOLTS • PUMP DRIVE GEARBOX SECURING BOLTS 3.2

Tigercat 726 Feller Buncher

GENERAL þ CLEAN AROUND FILLER CAPS BEFORE CHECKING OR ADDING FLUIDS þ CLEAN AROUND HYDRAULIC FITTINGS BEFORE BREAKING CONNECTION. PLUG OR CAP IMMEDIATELY þ CLEAN UP SPILLS AS SOON AS POSSIBLE þ ALWAYS USE CLEAN OIL AND CONTAINERS 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

Lubrication and Maintenance

SCHEDULED MAINTENANCE FREQUENTLY:~ • CHECK ENGINE COOLING AIR INTAKE SCREENS FOR POSSIBLE RESTRICTION ______________________________________________

8 HOURS:~ • PERFORM "FREQUENTLY" MAINTENANCE CHECK, AND IN ADDITION:~ • CHECK ENGINE COOLANT LEVEL • CHECK ENGINE OIL LEVEL • DRAIN FUEL/WATER SEPARATOR • CHECK AIR INTAKE PRECLEANER CLEAN BOWL AS REQUIRED

þ TOP UP DIESEL FUEL AT EACH SHIFT TO REDUCE CONTAMINATION BY CONDENSATION

• CHECK HYDRAULIC OIL LEVEL

þ CLEAN UP OIL SPILLS ON WALKING SURFACES AND TOP OF ENGINE ENCLOSURE IMMEDIATELY

• CHECK TRANSMISSION OIL LEVEL AT DIPSTICK (LEVEL PLUG ON EARLIER MACHINES)

þ BEFORE WELDING ON MACHINE BE SURE MASTER SWITCH IS DISCONNECTED

• LUBRICATE AXLES ~ OUTER BEARINGS 1 FITTING, 4-PLACES, PURGE

þ WHEN WELDING SECURE GROUND CONNECTION AS CLOSE TO WORKING POSITION AS POSSIBLE TO PREVENT ARCING ACROSS MACHINED SURFACES OR THROUGH BEARINGS

• LUBRICATE MID DRIVE SHAFT AND 'U' JOINTS, 3-FITTINGS, PURGE

þ CLEAN AWAY ALL BRANCHES, BARK AND CHIPS. CLEAN UP ALL TRACES OF OIL TO AVOID FIRES

• LUBRICATE FRONT DRIVE SHAFT BEARING AND 'U' JOINT, 2-FITTINGS, PURGE

CAUTION ALL HANDLES, STEPS AND PLATFORMS MUST BE KEPT FREE OF GREASE, OIL, FUEL, MUD, SNOW AND ICE þ ALWAYS HAVE A FIRE EXTINGUISHER AT HAND þ FOR SAFETY, ALWAYS LOWER BOOM ASSY TO THE GROUND WHEN LEAVING CAB, LEAVING MACHINE UNATTENDED OR DURING SERVICE þ FOR SAFETY, ALWAYS INSTALL LIFT BOOM CYLINDER LOCKING DEVICE WHEN WORKING UNDER BOOM. (REFER TO SECTION 2 OF THIS MANUAL) 3.3

• CHECK PUMP DRIVE GEARBOX OIL LEVEL WITH DIPSTICK

• LUBRICATE REAR DRIVE SHAFT AND 'U' JOINTS, 3-FITTINGS, PURGE

• LUBRICATE CENTER 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-FITTINGS, PURGE

CLEAN:~ • POTENTIALLY DAMAGING LIMBS OR STICKS Continued on page 4

Tigercat 726 Feller Buncher

Lubrication and Maintenance

Continued from page 3

VISUALLY INSPECT FOR:-

CHECK:~

• FRAYED ELECTRICAL WIRING AND HYDRAULIC HOSE

• FOR LEAKAGE AROUND HYDRAULIC COMPONENTS AND FLEXIBLE HOSES

• WEAR IN ANY OTHER COMPONENTS

• FOR LOOSE NUTS, BOLTS AND FITTINGS • CONDITION AND TENSION OF FAN BELTS.

CLEAN/REPLACE:-

• WATER PRESSURE GAUGE IN CAB (60 PSI) FOR PRESSURIZED WATER SYSTEM.

• AIR CONDITIONER RE-CIRCULATION FILTER

IF THE WATER SYSTEM HAS BEEN OPERATED, REFER TO SECTION 2 OF THIS MANUAL FOR REFILLING AND CHARGING INSTRUCTIONS.

• CAB FRESH AIR FILTER • REMOVE TWO ACCESS PANELS ON EACH SIDE OF ENGINE ENCLOSURE AND CLEAN BETWEEN RADIATOR AND OIL COOLER

• CONDUCT AN OVERALL VISUAL INSPECTION.

REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

_______________________________________________________________________________________

250 HOURS:~

______________________________________________________________________________________

125 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, FITTINGS, PURGE

AND IN ADDITION:~

2-

• REPLACE ENGINE OIL AND CHANGE OIL FILTER

• LUBRICATE GEAR SHIFT LINKAGE, 2-FITTINGS, PURGE

• REPLACE ENGINE FUEL FILTER • DRAIN FUEL/WATER SEPARATOR

CHECK:-

• REPLACE AIR INTAKE PRIMARY ELEMENT

• FLUID LEVEL IN BATTERIES UNLESS MAINTENANCE FREE

REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

• ENGINE R.P.M. • ALL HYDRAULIC PRESSURES

_______________________________________________________________________________________

• HYDRAULIC PUMP AND MOTOR SECURING BOLTS • TORQUE TIGHTENING POINTS AS PER NEW MACHINE MAINTENANCE

VISUALLY CHECK FOR DAMAGE TO:• LIFT BOOM AND TILT LINKAGE • FRONT AND REAR FRAME • CENTER JOINT AREA • ATTACHMENT MAKE REPAIRS IMMEDIATELY 3.4

Tigercat 726 Feller Buncher

Lubrication and Maintenance

500 HOURS:~

APPROVED HYDRAULIC OILS

• PERFORM "FREQUENTLY" MAINTENANCE 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.

• PERFORM 8 HOUR MAINTENANCE • PERFORM 125 HOUR MAINTENANCE • PERFORM 250 HOUR MAINTENANCE AND IN ADDITION REPLACE:~ • AIR INTAKE SAFETY ELEMENT

WET DISK BRAKES IN THE AXLES REQUIRE OIL WITH SPECIFIC PROPERTIES TO ENSURE REDUCED CHATTER AND ENSURE PROPER LUBRICATION OF MECHANICAL COMPONENTS.

• HYD.OIL PRESS. FILTER, CH. PUMP OUTLET • HYD. OIL RETURN FILTER, TRAV./STEER • HYD. OIL RETURN FILTERS, SAW/BOOM

USE ONLY ONE OF THE FOLLOWING OILS TO FILL OR REPLENISH THE HYDRAULIC SYSTEM.

• HYD. OIL RETURN FILTER, PILOT REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

1000 HOURS:~ • PERFORM "FREQUENTLY" MAINTENANCE • PERFORM 8 HOUR MAINTENANCE • PERFORM 125 HOUR MAINTENANCE

CHEVRON

TRACTOR HYDRAULIC FLUID (SUMMER)

CITGO

TRACTOR HYDRAULIC FLUID (33-310) (SUMMER)

IMPERIAL

ESSO HYDRAUL 56 (SUMMER) HYDRAUL 50 (LOW VISC) (WINTER)

SHELL

DONAX TD (SUMMER) DONAX TDL (WINTER)

SUN

SUNFLEET TH FLUID (SUMMER)

JOHN DEERE TYPE J20C (HY-GARDTM) (SUMMER) TYPE J20D (HY-GARDTM) (WINTER)

• PERFORM 250 HOUR MAINTENANCE • PERFORM 500 HOUR MAINTENANCE AND IN ADDITION REPLACE OIL IN:~ • PUMP DRIVE GEARBOX • TRANSMISSION CHECK:~ ACCUMULATOR CHARGE VALVE STRAINER REFER TO DIESEL ENGINE SERVICE MANUAL AND ATTACHMENT MANUAL FOR ADDITIONAL REQUIRED MAINTENANCE AT THIS SCHEDULED TIME PERIOD.

SEASONAL:~ DRAIN AND REFILL HYDRAULIC OIL TANK AND BOTH FRONT AND REAR AXLES WITH RECOMMENDED HYDRAULIC OIL. SEE "APPROVED HYDRAULIC OILS" ALSO SEE SECTION 8 OF THE OPERATOR/SERVICE MANUAL FOR AXLE DRAINING PROCEDURE.

3.5

REF. NUMBER

1000HOURS

500 HOURS

250 HOURS

125 HOURS

EVERY SHIFT 8 HOURS

FIRST 25 HOURS

Tigercat 726 Feller Buncher

CHK CHANGE COOLANT 1 EVERY 2 YEARS CHK REP 2

Lubrication and Maintenance

FILTER AND LUBRICATION SCHEDULE DESCRIPTION COOLING SYSTEM 50% ANTIFREEZE 50% WATER

CAPACITY REMARKS/LUBRICANT LITRE USG No. 32 8.5 16L (4.25 USG) ANTIFREEZE ** 16L (4.25 USG) DISTLD. WATER

ENGINE OIL/FILTER CAT. CUMMINS

15 18.9

SEE ENGINE MANUFACTURER’S MAINTENANCE MANUAL

4 5

REP

REP

3

FUEL FILTER (ENGINE)

1

REP DRN

REP

4

FUEL/WATER SEPARATOR

1

5

AIR INTAKE PRECLEANER

1

CLEAN BOWL AS REQ'D

5

AIR INTAKE PRIMARY ELEMENT

1

CHECK FILTER RESTRICTION INDICATOR WITH ENGINE RUNNING

5

AIR INTAKE SAFETY ELEMENT

1

7

HYDRAULIC RESERVOIR

CHK REP REP CHK

320

85

1

REP

REP

8

RETURN FILTER, TRAVEL/STEER

1

REP

REP

9

RETURN FILTER, (DUAL) SAW/BOOM

1

REP

REP

10 RETURN FILTER, PILOT

1

11 REP

REP CHK

12 CHARGE PRESS. OUTLET FILTER D/R 13 PUMP DRIVE GEARBOX

4.02

1.1

1

15 AXLES - DIFFERENTIAL • FRONT • REAR

FILL WITH MIL-L-2105Cor API-GL-5 LUBRICANT GRADE/ WEATHER TEMPERATURE:

D/R 14 TRANSMISSION 7.6 2 1 CHECK LEVEL AT LEVEL PLUG (EARLY MACHINES) DIPSTICK ON LATER MACHINES

CHK*

CHECK FILTER RESTRICTION INDICATOR ON FILTER WITH ENGINE RUNNING AT FULL AND WITH OIL FLOW

1

CHECK LEVEL WITH DIPSTICK CHK

DRAIN AND REFILL AS REQ’D

BY SEASONAL OIL CHANGE SEE HYD. OIL CHART

41 32

10.8 8.5

BELOW -10°F(-23°C) USE 75W UP TO 100°F (38°C) USE 80W-90 ABOVE 100°F(38°C) USE 85W-140

1 1

*CHK LEVEL FIRST 25 HRS. *D/R FIRST 500 HRS CHECK LEVEL AT DIFF. FILLER PLUG. D/R WITH SEASONAL OIL CHANGE

16 AXLE - PIVOT (REAR ONLY)

PURGE

2

LITHIUM BASE EP2 GREASE u

LUB

17 AXLES - OUTER BEARINGS

PURGE

4

LITHIUM BASE EP2 GREASE u NOTE: LUB EVERY 50 HRS. IF NOT EXPOSED TO MUD AND WATER

LUB

18 DRIVE SHAFT, MID: SHAFT & U-JOINTS DRIVE SHAFT, REAR: SHAFT & U-JOINTS DRIVE SHAFT, FRONT: U-JOINT & BEARING

PURGE PURGE PURGE

3 3 2

LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u

LUB

19 CENTRE JOINT

PURGE

2

LITHIUM BASE EP2 GREASE u

LUB

29 STEERING CYLINDERS

PURGE

4

LITHIUM BASE EP2 GREASE u

LUB

21 TILT AND LIFT CYLINDERS

PURGE

8

LITHIUM BASE EP2 GREASE u

LUB

22 LIFTBOOM AND TILT LINKAGE

PURGE

9

LITHIUM BASE EP2 GREASE u

1

REMOVE, CLEAN OR REPLACE

2

LITHIUM BASE EP2 GREASE u

LUB

CHK 23 ACCUM. VALVE STRAINER LUB

24 GEAR SHIFT LINKAGE

PURGE

u LITHIUM BASED EP2 GREASE CONTAINING MOLYBDENUM DISULFIDE **ANTIFREEZE MUST MEET GM 6038M SPECIFICATIONS • SEE ENGINE MANUFACTURERS MAINTENANCE MANUAL LEGEND: CHK - CHECK REP - REPLACE DRN - DRAIN D/R - DRAIN AND REFILL LUB - LUBRICATE ISSUE 2 1295

3.6

Tigercat 726 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 620 389-427

1" UNC

682-750

617-679

Center joint bearing Bearing retaining bolts Pin retaining bolts

1/2" UNC 3/4" UNC

80-88 282-310

109-119 393-420

Engine mounting Bolts Bolts, brkt. to bell hsg.

7/8" UNC M16

600 200

827 275

Pump drive gearbox Drive plate to flywheel Bell housing to engine Engine mounting bracket

3/8" UNC 3/8" UNC 5/8" UNC

33-36 33-36 159-175

45-49 45-49 216-237

1" UNC 5/8" UNC

250-275 159-175

339-373 216-237

3/8" UNF

37-49

50-66

1/2" UNF

70-80

95-108

Axle mounting bolts Front Rear

7/8" UNC 3/4" UNC

455-501 282-310

617-679 393-420

Wheel bolts

3/4" UNC

282-310

393-420

Cab securing bolts

Drive shafts Yoke retaining nut, front shaft Pillow block retaining bolts Rear drive shaft universal joint bolts Mid. and front drive shaft universal joint bolts

Torque values pertaining to the engine and attachment are provided in the appropriate manuals.

3.7

Tigercat 726 Feller Buncher

Lubrication and Maintenance

GENERAL TORQUE SPECIFICATIONS The torque values listed below are for general use only.

DO NOT use these values if a different torque value or tightening procedure is shown for a specific application.

IMPERIAL

GRADE 5 BOLTS

GRADE 8 BOLTS COARSE THREADS 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 THREADS 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" - 12 1 1/8" - 12 1 1/4" - 12

DRY lbf-ft Nm 11 - 12 15 - 16 20 - 28 27 - 38 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

LUBRICATED lbf-ft Nm 8 - 10 11 - 13 26 - 30 35 - 40 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

COARSE DRY THREADS lbf-ft Nm 1/4" - 20 7- 8 10 - 11 5/16" - 18 14 - 18 19 - 24 3/8" - 16 31 - 34 42 - 46 7/16" - 14 49 - 54 66 - 73 1/2" - 13 75 - 83 102 - 112 9/16" - 12 109 - 120 148 - 162 5/8" - 11 150 - 165 204 - 223 3/4" - 10 266 - 293 360 - 397 7/8" - 9 394 - 433 535 - 586 1" - 8 591 - 649 802 - 879 1 1/8" - 7 794 - 873 1077 - 1183 1 1/4" - 7 1120 - 1232 1519 - 1670 FINE DRY THREADS lbf-ft Nm 1/4" - 28 9 - 10 12 - 13 5/16" - 24 17 - 22 23 - 29 3/8" - 24 35 - 39 48 - 53 7/16" - 20 55 - 61 75 - 83 1/2" - 20 85 - 94 116 - 127 9/16" - 18 121 - 133 164 - 180 5/8" - 18 170 - 187 231 - 253 3/4" - 16 297 - 327 403 - 443 7/8" - 14 434 - 477 589 - 646 1" - 12 646 - 711 876 - 965 1 1/8" - 12 891 - 980 1208 - 1328 1 1/4" - 12 1240 - 1364 1682 - 1849

LUBRICATED lbf-ft Nm 8 - 10 11 - 13 10 - 15 13 - 20 23 - 25 31 - 34 37 - 41 50 - 55 57 - 63 77 - 85 82 - 90 111 - 122 113 - 124 152 - 168 200 - 220 271 - 298 296 - 326 402 - 441 443 - 489 601 - 663 596 - 656 808 - 889 840 - 924 1139 - 1252 LUBRICATED lbf-ft Nm 9 - 10 12 - 13 16 - 20 21 - 27 26 - 29 35 - 39 41 - 45 56 - 61 64 - 70 87 - 95 91 - 100 124 - 135 128 - 141 174 - 191 223 - 245 303 - 332 326 - 359 442 - 486 484 - 534 657 - 724 668 - 735 906 - 996 931 - 1024 1262 - 1387

METRIC

SIZE

CLASS 4.8 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

CLASS 8.8 OR 9.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

M6 M8 M10

4.8 12 23

3.5 8.5 17

6 15 29

4.5 11 21

9 22 43

6.5 16 32

11 28 55

8.5 20 40

13 32 63

9.5 24 47

17 40 80

12 30 60

15 37 75

11.5 28 55

19 47 95

14.5 35 70

M12 M14 M16

40 63 100

29 47 73

50 80 125

37 60 92

75 120 190

55 88 140

95 150 240

70 110 175

110 175 275

80 130 200

140 225 350

105 165 225

130 205 320

95 150 240

165 260 400

120 190 300

M18 M20 M22

135 190 260

100 140 190

175 240 330

125 180 250

260 375 510

195 275 375

330 475 650

250 350 475

375 530 725

275 400 540

475 675 925

350 500 675

440 625 850

325 460 625

560 800 1075

410 580 800

M24 M27 M30

330 490 675

250 360 490

425 625 850

310 450 625

650 950 1300

475 700 950

825 1200 1650

600 875 1200

925 1350 1850

675 100 1350

1150 1700 2300

850 1250 1700

1075 1600 2150

800 1150 1600

1350 2000 2700

1000 1500 2000

M33 M36

900 1150

675 850

1150 1450

850 1075

1750 2250

1300 1650

2200 2850

1650 2100

2500 3200

1850 2350

3150 4050

2350 3000

2900 3750

2150 2750

3700 4750

2750 3500

3.8

CLASS 10.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

CLASS 12.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

Tigercat 726 Feller Buncher

Lubrication and Maintenance

PRESSURE SETTINGS (WITH KOEHRING WATEROUS 20" DISC SAW FELLING HEAD)

Engine RPM ...................................................... 2200 RPM MAX 1000 RPM IDLE Hydrostatics: Charge Pressure Rexroth Pump ....................................................450 PSI @ 2200 RPM Rexroth Motor ....................................................NON - ADJUSTABLE or Rexroth Pump ....................................................450 Sundstrand Motor .............................................. 400

PSI @ 2200 RPM PSI @ 2200 RPM

Main Reliefs P.O.R. Forward ..................................................4800 P.O.R. Reverse ..................................................4800 High Pressure Relief Forward @ 1/3 Pedal .......5400 High Pressure Relief Reverse @ 1/3 Pedal ...... 5400

PSI PSI PSI PSI

@ @ @ @

2200 2200 1000 1000

RPM RPM RPM RPM

Drive Motor P.O.R. (Begin of Stroke) ................3700 PSI @ 1000 RPM (SEE NOTE) NOTE: Gauge reading at 'M' port on motor should be 500-800 psi to obtain the 3700 psi setting. See procedure in SECTION 8 of the SERVICE MANUAL.

Steer Main Relief ...............................................2500 PSI @ 2200 RPM Steer Port Relief Left .........................................3200 PSI @ 1000 RP Steer Port Relief Right ....................................... 3200 PSI @ 1000 RPM Attachment Pump Saw Pump P.O.R. .............................................. 3600 PSI @ 1000 RPM Saw Pump Low Pressure Control ...................... 200-300 PSI @ 1000 RPM S/N 7260101 TO 7260441 Saw Pump Low Pressure Control ...................... Turned in Fully S/N 7260442 & UP Saw Blade Speed .............................................. 1175 ± 25 RPM Saw Motor Begin of Regulation ......................... 3100 PSI @ 2200 RPM Saw Control Valve Main Relief .......................... 4200 PSI @ 1000 RPM S/N 7260101 TO 7260441 Boom Valve Saw Main Relief ................................................. 3900 PSI Mid Inlet Main Relief .......................................... 2600 PSI Tilt Back Port Relief ...........................................2900 PSI Tilt Forward Port Relief ......................................2900 PSI Accumulator Close Port Relief ........................... 3200 PSI Accumulator Open Port Relief ........................... 3200 PSI Clamp Open Port Relief ..................................... 2000 PSI 1100 PSI Clamp Close Port Relief ....................................3200 PSI Lift Up Port Relief ...............................................2900 PSI Lift Down Port Relief .......................................... 2200 PSI Pilot Pressure Reducing Valve ..........................550 Pilot Pressure Relief Valve ................................ 675

@ 1000 @ 2200 @ 1000 @ 1000 @ 1000 @ 1000 @ 1000 @ 1000 @ 1000 @ 1000 @ 1000

RPM S/N 7260442 & UP RPM RPM RPM RPM RPM RPM S/N 7260101-0441 RPM S/N 7260442 & UP RPM RPM RPM

PSI @ 1000 RPM PSI @ 1000 RPM

Brake Maximum Pressure .................................1000 PSI @ 1000 RPM ISSUE 6 1295

3.9

Tigercat 726 Feller Buncher

Lubrication and Maintenance

3.10