Tigercat BUNCHING AND FELLING SAWS OPERATOR AND SERVICE MANUAL - PDF DOWNLOAD

BUNCHING AND FELLING SAWS

OPERATOR AND SERVICE MANUAL

ISSUE 7.0, JULY 2016 Tigercat Industries Inc. P.O. Box 637 Brantford, Ontario Canada N3T 5P9 Tel: (519) 753-2000 Fax: (519) 753-8272

Introduction

Tigercat Bunching and Felling Saws

ii

Tigercat Bunching and Felling SawsFelling Tigercat Bunching and

Saws

Introduction

TABLE OF CONTENTS SECTION INTRODUCTION ................................................................................................................................ v NON-APPROVED FIELD PRODUCT CHANGES..............................................................................vi SAFETY.............................................................................................................................................. 1 USING HIGH SPEED DISC SAWS SAFELY ...........................................APPENDIX TO SECTION 1 OPERATING, SERVICE AND MAINTENANCE ................................................................................. 2

Bunching and Felling Saw Available Literature Operator and Service Manual (This Manual), English ...........................................................Part No. 8931A Operator and Service Manual, Portuguese ......................................................................... Part No. 23511A Operator and Service Manual, Spanish...............................................................................Part No. 20489A Parts Catalog, DW5000 .........................................................................................................Part No. 7974A Parts Catalog, DT5000 ..........................................................................................................Part No. 8137A Parts Catalog, ST5400 ........................................................................................................Part No. 15457A Parts Catalog, DW5500 .......................................................................................................Part No. 13058A Parts Catalog, DT5500 ........................................................................................................Part No. 13059A Parts Catalog, DW5600 .........................................................................................................Part No. 6723A Parts Catalog, SW5700 .......................................................................................................Part No. 13055A Parts Catalog, ST5700 ........................................................................................................ Part No. 11941A iii

Introduction

Tigercat Bunching and Felling Saws

iv

Tigercat Bunching and Felling SawsFelling Tigercat Bunching and

Saws

Introduction

INTRODUCTION An Operator and Service manual and a Parts catalog are provided by Tigercat to assist the dealer, customer and operator in becoming familiar with the features of the Tigercat Bunching and Felling Saws serial numbers: DW5001 DW5002 DT5001 DT5002 SW5401 ST5401 DW5501 DT5501 DW5601 DW5602 DW5603 SW5701 SW5702 ST5701 ST5702 ST5702 -26

DW5001 1001-1049 DW5002 1051-1095, 501096-501600 DT5001 1003-1033 DT5002 1050-1072, 501096-501600 541001-542000 541001-542000 551501-551999 551501-551999 DW5601 1001-1144 DW5602 1045-1050, 561151-561349 561351-562500 571001-571499 572001-575000 571001-571499 572001-575000 578001-578500

The Operator and Service manual will assist the operator with the techniques of proper and safe operation of the Bunching and Felling Saws. It contains important information regarding the safe operation of the saw head, a preventive maintenance schedule and servicing procedures to ensure optimum felling performance. Also included are disassembly and assembly instructions.

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

The operator of this equipment must be made aware of the fact that; The safety of the people on the ground i.e., workers or bystanders is the responsibility of the machine operator.

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

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

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

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

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

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

Tigercat Industries Inc.

v

Introduction

Tigercat Bunching and Felling Saws

NON-APPROVED FIELD PRODUCT CHANGES

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

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

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

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

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

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

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

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

Tigercat Industries Inc.

vi

Tigercat Bunching and Felling Saws SECTION 1 – SAFETY Read and understand this safety section prior to operating any equipment. Read and understand all manuals for any attachment or accessories.

CONTENTS – SECTION 1

ISSUE 7.0, JULY 2016

BACKOVER ACCIDENTS - AVOIDING...................................................................................................... 1.8 BATTERY DISCONNECT SWITCH......................................................................................................... 1.18 BATTERY SAFETY.................................................................................................................................... 1.8 CAB EXITS............................................................................................................................................... 1.11 CABLE ASSIST........................................................................................................................................ 1.15 CABLE ASSIST MOUNT...................................................................................................................... 1.15 CABLE TENSION................................................................................................................................. 1.16 DAILY CHECKS.................................................................................................................................... 1.15 LOADING DIRECTIONS....................................................................................................................... 1.16 COOLING SYSTEM................................................................................................................................. 1.21 DIESEL EXHAUST FLUID (DEF)............................................................................................................. 1.11 DURING OPERATION............................................................................................................................... 1.9 EMERGENCY CAB EXITS....................................................................................................................... 1.11 ENGINE DOORS...................................................................................................................................... 1.24 ER BOOM FUNCTION, SWITCHABLE.................................................................................................... 1.23 ER BOOM SYSTEM PRECAUTIONS...................................................................................................... 1.23 EXHAUST FUMES................................................................................................................................... 1.24 FELLING TREES......................................................................................................................................1.17 FIRE PREVENTION................................................................................................................................. 1.30 DRY CHEMICAL CLEANUP PROCEDURES....................................................................................... 1.34 FIRE PREVENTION GUIDELINES....................................................................................................... 1.30 WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED............................................................... 1.33 WHAT TO DO TO PREPARE FOR A MACHINE FIRE......................................................................... 1.31 WHAT TO DO WHEN A MACHINE FIRE OCCURS............................................................................. 1.32 FLUID INJECTION INJURY..................................................................................................................... 1.25 FLUID LEAKS..........................................................................................................................................1.21 GENERAL SAFETY PRECAUTIONS........................................................................................................ 1.3 GREASE INJECTION INJURY................................................................................................................. 1.26 HAZARD ZONE..........................................................................................................................................1.4 HYDRAULIC PRESSURE HAZARD.............................................................................................. 1.19, 1.21 LIGHTENING SAFETY AWARENESS LIGHTNING SAFETY........................................................................................................................... 1.27 WHAT IS A LIGHTNING STRIKE?........................................................................................................ 1.27 LIGHTNING SAFETY AWARENESS WHAT IS A LIGHTNING STRIKE?........................................................................................................ 1.27 LIQUID STARTING AID............................................................................................................................ 1.10 LOOSE CLOTHING HAZARD.................................................................................................................. 1.21 MACHINE STABILITY AND TRACTION WITH LEVELER................................................................................................................................... 1.13 WITHOUT LEVELER............................................................................................................................ 1.12 OPERATING SAFETY PRECAUTIONS..................................................................................................... 1.9 PARKING HAZARDS............................................................................................................................... 1.18 PARKING THE MACHINE........................................................................................................................ 1.18 PNEUMATIC GREASE GUNS, USING.................................................................................................... 1.26 1.1

Safety

Tigercat Bunching and Felling Saws

PRESSURIZED HYDRAULIC TANK........................................................................................................ 1.19 PROTECTIVE EQUIPMENT...................................................................................................................... 1.3 REFUELING.............................................................................................................................................1.10 SAFETY HAZARDS - OPERATING........................................................................................................... 1.7 SAFETY HAZARDS - VITON SEALS......................................................................................................... 1.7 SAFETY PRECAUTIONS, GENERAL....................................................................................................... 1.3 BACKOVER ACCIDENTS...................................................................................................................... 1.8 HAZARD ZONE...................................................................................................................................... 1.4 PROTECTIVE CLOTHING..................................................................................................................... 1.3 VITON SEALS........................................................................................................................................ 1.7 SAFETY PRECAUTIONS, OPERATING.................................................................................................... 1.9 CAB EXITS........................................................................................................................................... 1.11 LIQUID STARTING AID........................................................................................................................ 1.10 MACHINE STABILITY AND TRACTION............................................................................................... 1.13 PARKING THE MACHINE.................................................................................................................... 1.18 SEAT BELT...........................................................................................................................................1.10 SAFETY PRECAUTIONS, SERVICING................................................................................................... 1.19 ER BOOM SYSTEM............................................................................................................................. 1.23 FLUID INJECTION INJURY.................................................................................................................. 1.25 GREASE INJECTION INJURY............................................................................................................. 1.26 LEVELING SYSTEM............................................................................................................................ 1.24 PRIOR TO WELDING........................................................................................................................... 1.20 SAFETY SYMBOLS................................................................................................................................... 1.3 SEAT BELT...............................................................................................................................................1.10 SEPARATION DISTANCE.......................................................................................................................... 1.4 SERVICING SAFETY PRECAUTIONS.................................................................................................... 1.19 SIGNAL WORDS........................................................................................................................................ 1.3 VITON SEALS............................................................................................................................................ 1.7 WELDING, PRIOR TO............................................................................................................................. 1.20 WORKING WITH OIL................................................................................................................................. 1.6

1.2

Tigercat Bunching and Felling Saws

Safety

GENERAL SAFETY PRECAUTIONS

SAFETY SYMBOLS

Remember that safety is a prime responsibility of all.

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

This safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! The safety alert symbol identifies important safety messages on machines, safety signs, in manuals, or elsewhere. When you see this symbol, be alert to the possibility of personal injury or death. Follow the instructions in the safety message.

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

UNDERSTANDING SIGNAL WORDS DANGER

Follow all instructions from safety inspector and supervisors.

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

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

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

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

NOTICE NOTICE indicates a potentially damaging situation which, if not avoided, may result in property damage.

Do not let untrained persons operate the machine.

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

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

1.3

Safety

Tigercat Bunching and Felling Saws

KEEP BACK 150 m (500 ft)

WARNING Before using the saw blade guard and locking bolt the engine must be shutdown, the saw blade must have come to a complete stop and the felling head must be supported.

The following diagram illustrates the HAZARD ZONE. All personnel should be kept clear of this zone while the harvesting equipment is operating.

The guard must be installed when working on the saw motor hydraulic circuit or when the saw head is not being used. Refer to SAW BLADE GUARD AND LOCKING PIN SECTION 2 of THIS MANUAL for instructions on the proper use of this safety device.

The HAZARD ZONE should be considered off limits to all individuals.

WARNING

150 m (500 ft)

Before using the saw blade lock pin the engine must be shutdown, the saw blade must have come to a complete stop and the felling head must be supported.

150 m (500 ft)

150 m (500 ft)

The saw blade lock pin must be used for all maintenance procedures requiring access to the exposed portion of the blade and teeth, such as saw tooth replacement and saw tooth sharpening. Refer to SAW BLADE LOCK PIN in SECTION 2 of THIS MANUAL for instructions on the proper use of this safety device.

150 m (500 ft)

860C-039

HAZARD ZONE

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

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

Always avoid the discharge side of a felling saw head. A saw head's high-velocity discharge of debris requires a safe separation distance.

1.4

Tigercat Bunching and Felling Saws

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

WARNING

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. This machine exceeds 70 dB(A) in the cab and exceeds 85 dB(A) when servicing machine engine.

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

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

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

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

Do not jump off the machine at any time.

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

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

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

Do not use the machine foot controls as steps.

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

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

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

Machine should be washed completely at every major service.

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

WARNING

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

Check windows and door guards for damage.

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

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

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

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

1.5

Safety

Tigercat Bunching and Felling Saws WORKING WITH OIL

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

Check all fluid levels.

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

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

Some advice which should be observed: • Oils used in this machine may be hot enough to cause serious burns.

• Avoid contact with oil, particularly heated oil.

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

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

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

• Do not put oily rags in your pockets.

• Soiled clothing should be changed as soon as possible.

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

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

• Avoid breathing in oil fumes.

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

• Oily rags and gloves must be safely discarded after use.

1.6

Tigercat Bunching and Felling Saws

Safety

SAFETY HAZARDS – VITON SEALS

Approach with extreme caution any area where overhanging electrical power lines are present.

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

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

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

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

The following procedures are recommended when inspecting equipment that has been subjected to high temperatures such as fire: • Visually inspect any seals or gaskets which have suffered from heat; they will appear black and sticky.

• If these are found, Do Not Touch!

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

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. Refer to appropriate machine VEHICLE MOVING INSTRUCTIONS MANUAL. Stopping the engine immediately after it has been working under load can result in overheating and premature wear of the engine components.

Reduce engine speed to LOW IDLE and let run for approximately five minutes to allow gradual dissipation of heat and also to reduce turbo speed.

This will also prevent loss of coolant by after boil and possible hot spot damage to the engine.

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

• Any soiled rags and gloves must be safely discarded after use.

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

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

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

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

WARNING

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

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.

1.7

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

Safety

Tigercat Bunching and Felling Saws

WARNING

AVOID INJURY FROM BACKOVER ACCIDENTS

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

Wash hands after handling.

Before moving the machine, be sure all persons are clear of the area.

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

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

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

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

To avoid backover accidents: • Always look around before you back up. Be sure that everyone is clear.

Disconnect battery before working on electrical systems as follows:

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

• Turn off battery disconnect switch in the cab • Disconnect negative starter motor cable from both battery posts

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

• Disconnect positive solenoid cable from both battery posts Connect ground terminal last when reconnecting.

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

Do not short out battery terminals for any reason.

Serious burns or an explosion can result.

• Keep windows, mirrors and lights in good condition.

CAUTION

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

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

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

1.8

Tigercat Bunching and Felling Saws

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

OPERATING SAFETY PRECAUTIONS

Use only prearranged and approved signalling practices.

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

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

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

Read and understand "Using high speed disc saws safely" section of this book (or Tigercat safety bulletin No. SFB-001).

During operation of the disc saw felling head, all personnel not in the cab of the machine should REMAIN AT LEAST 150 m (500 ft) AWAY AND NEVER CROSS IN FRONT OF THE SAW OPENING.

Read, understand and follow all operating and general safety precautions specified in this manual. Remember at all times that the disc saw blade at operational speed carries a tremendous amount of stored energy. Flying chips or other debris can cause serious injury.

DO NOT APPROACH THE FELLING HEAD UNLESS THE DISC SAW BLADE HAS COME TO A COMPLETE STOP AND THE ENGINE HAS BEEN SHUT DOWN.

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

All observers should stand on the opposite side of the machine to where chips are being directed from the saw opening.

CAREFULLY INSPECT THE CONDITION OF THE SAW BLADE AND TEETH at the start of every shift and immediately following contact with a rock or other foreign material.

Always wait until disc saw achieves full speed before proceeding to cut. Turn saw controls on only when engine is at idle.

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

Check for fatigue cracks in the teeth and saw blade and replace or repair any defective saw components.

Never operate on STEEP slopes.

Check tooth fastener torques daily.

NEVER travel across a STEEP slope or side hill:

SHUT SAW OFF IMMEDIATELY IF AN IMBALANCE OCCURS. Do not operate saw blade in an unbalanced condition - repair as necessary to achieve balanced condition.

See MACHINE STABILITY AND TRACTION in THIS SECTION

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

Never operate the saw blade at a higher speed than the maximum upper limit.

WARNING

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

If saw guard has been installed DO NOT remove until at the cutting site. Remove guard before starting engine.

Sound the machine horn before starting the machine.

DO NOT open an escape hatch or the cab doors to increase ventilation when operating the machine.

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

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

1.9

Safety

Tigercat Bunching and Felling Saws

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

Secure loose items in the cab.

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

S≤15 mg/kg

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

Turn OFF the engine when refuelling - DO NOT ULTRA LOW SULFUR refuel the engine while smoking or ONLY near open FUEL 36686AUNI R0 flame or sparks.

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

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

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

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

When travelling, position attachment and boom so as not to impair vision.

Sound the machine horn before starting the machine.

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

CAUTION Do not open cab doors or window screens when cab is on a slope. The doors and screens are heavy and could swing out with considerable force. Anyone in the path of swing could be injured. Anyone opening the door or screen and holding on to it could be pulled out of the cab and injured.

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

Start the engine according to the instructions in the machine specific manual. Refer to OPERATING MACHINE in SECTION 2 of the MACHINE OPERATOR'S MANUAL.

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

Never use a liquid starting aid to start an engine.

The machine is equipped with a computer controlled heating element in the engine intake system. Starting fluids will explode on contact with the heating element.

1.10

Tigercat Bunching and Felling Saws

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

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

All operators should practice using all the cab exits to become familiar with escape procedures should they need to perform them in the dark, when the machine is in a rolled position, or other possible adverse conditions.

41581AUNI R0

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

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

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

IMPORTANT! Unlock all doors before operating machine to allow opening from the outside in case of an emergency.

Make sure that the doors are operational, open the doors twice, once using the exterior latch handle and once using the interior handle.

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

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

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

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

1.11

Safety

Tigercat Bunching and Felling Saws

MACHINE STABILITY AND TRACTION MACHINES WITHOUT LEVELER

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

Never travel across a STEEP slope or side hill: 1. As a load is added to the attachment the handling and the stability of the machine will change.

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

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

4. Do not overload the machine as this can create an unstable condition and cause a roll-over.

1.12

Tigercat Bunching and Felling Saws

Safety

MACHINES WITH LEVELER

This machine is designed to operate on rough terrain and slopes commonly found in forestry applications. However, ground conditions vary greatly with changing soil types, slope angles, moisture, snow and ice, rocks, boulders and stumps, and fallen trees. All of these factors affect the machine’s stability against tip-over and traction to resist slipping. This machine may not be capable of operating on some ground conditions, and must be used with caution.

Whenever possible work within the normal working range of the boom system as shown in FIG. 1.

845C-004 845C-005

20°

NOTE: In any boom position, both inside and outside of the normal operating range, there is a risk of instability and tipping.

When it is necessary to work outside of the normal working range, be aware that the stability of the machine is reduced. The risk of tipping is increased while operating in the reduced stability working range.

Be aware that the machine is in its least stable position on a slope with the boom to the rear.

16° NORMAL WORKING RANGE OF BOOM SYSTEM

FIG. 2 - UNDERCARRIAGE LEVELING ANGLES

UPHILL

To minimize the risk of tipping observe the following:

REDUCED STABILITY WORKING RANGE

• Do not attempt to operate this machine on slopes without first receiving proper training.

• Learn the stability limits or “feel” of the machine by first working on gentle slopes and by positioning the boom to reduce the risk of tipping. Gain experience over time by gradually increasing the angle of the slopes on which you are working.

TRACK GEAR BOX AT REAR OF UNDERCARRIAGE 860C-030

FIG. 1 - WORKING RANGES

• Keep the attachment as close to the ground as possible to increase machine stability, and to allow the boom to be quickly lowered to the ground should the machine begin to tip.

All efforts have been made in the design of the machine to reduce the risk of tipping, however it is not possible to eliminate the risk of tipping.

• Always use the LOW speed setting for the track drives when on slopes.

• Travelling at an angle to the slope other than straight up and down decreases the traction of the tracks. Increasing the angle to the slope away from straight up and down can cause the machine to slide sideways downhill and/or possibly tip over.

1.13

Safety

Tigercat Bunching and Felling Saws

Never travel across a STEEP slope or side hill.

BOOM TO FRONT

• Always carry any load on the uphill side of the machine.

• Do not lift or move objects that exceed machine stability.

• Always be prepared to release the load in case it causes the machine to tip.

• Always position the cab so that you have a clear view in the direction of travel. Be aware of ground conditions and obstacles in the machine’s path before moving the machine.

KEEP ATTACHMENT CLOSE TO GRADE

• When crossing obstacles (boulders, stumps, ditches etc.) the machine can shift rapidly, greatly affecting the stability of the machine.

Move slowly over obstacles, and position the boom against the ground to reduce the risk of the machine shifting rapidly.

TRACK GEAR BOX AT REAR OF UNDERCARRIAGE 845C-007

FIG. 3 CLIMBING SLOPE

• Backing over obstacles unexpectedly while travelling down a slope poses a tipping risk.

Know the path of the tracks whenever the machine is moved.

• When climbing a slope the boom should face uphill and the attachment should be kept close to the ground (FIG. 3). When descending a slope the boom should face down hill and the attachment should be kept close to the ground (FIG. 4). Be particularly aware of machine stability when changing directions on, or travelling back down a slope.

• As you gain experience, recognize that the maximum slope on which the machine can operate cannot be defined simply by an angle value. Variables in surface terrain, soil types, rocks, boulders, stumps, and fallen trees, changing weather conditions, and first and foremost the operator’s experience and skill levels greatly affect the maximum slope limitations. Be aware that these factors can result in a shallow slope posing greater risk than a relatively steeper slope. DO NOT attempt to work on slopes beyond your personal capability level.

KEEP ATTACHMENT CLOSE TO GROUND

845C-006

1.14

FIG. 4 DESCENDING SLOPE

Tigercat Bunching and Felling Saws

Safety

CABLE ASSIST

CABLE ASSIST MOUNT

The leveler cable assist mount may improve machine maneuverability on steep slopes when attached to a suitable winching device.

Factors that will affect the safety of the machine as it works on steep slopes are:

The cable assist mount can be used with a single or double shackle configuration depending on the winch system. Use only shackles with a pin diameter of 21⁄2 in. and rated for 55,000 kgf (121,000 lbf).

• Direction of machine travel • Limitations of machine tractive effort and soil conditions • Experience of the operator • Weather • Load sizes (boom position and load) • Poor visibility/lighting conditions

DAILY CHECKS

B A

On a daily basis prior to operating the equipment check:

855D-036

Single Shackle Configuration

• All equipment fluid levels.

A Shackle B Cable Assist Mount

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

• Secure loose items in the cab.

• Do not store tools, oil containers or other equipment in the cab • Functional check of all escape hatches.

• All covers, roof and doors are closed and latched.

• The cable assist mount for structural cracks and loose or missing bolts.

On a weekly basis check the torque tightening points on the cable assist mount. Make sure the M24 bolts have a torque value of 915 Nm (675 lbf-ft).

855D-037

A

B

Double Shackle Configuration

A Shackle B Cable Assist Mount

For additional information refer to MACHINE STABILITY AND TRACTION – MACHINES WITH LEVELER in THIS SECTION.

WARNING

CAUTION Do not open cab doors or window screens when cab is on a slope. The doors and screens are heavy and could swing out with considerable force. Anyone in the path of swing could be injured. Anyone opening the door or screen and holding on to it could be pulled out of the cab and injured.

The lifting bail on the cable assist mount is for installation of the cable assist mount only. Do not use the lifting bail for anything other than its intended use.

1.15

Safety

Tigercat Bunching and Felling Saws

CABLE TENSION

WARNING

To prevent damaging the cable assist mount and undercarriage the following acceptable maximum continuous cable tensions must not be exceeded.

Always use the proper equipment.

Always inspect the cable and cable assist mount for damage before using. Never use equipment that shows signs of poor maintenance or damage. Repairs should only be made by qualified personnel.

• Maximum continuous cable tension for a single shackle configuration is 18,000 kgf (40,000 lbf).

• Maximum continuous cable tension for a double shackle configuration is 9,000 kgf (20,000 lbf) for each cable.

LOADING DIRECTIONS

To prevent damaging the cable assist mount and undercarriage the following acceptable loading directions must not be exceeded.

855D-038

1.16

Tigercat Bunching and Felling Saws

Safety

FELLING TREES

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

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

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

Debris shoots away from the cutting disc at very high speed. The debris pattern gets wider as it gets further away from the machine.

WARNING Do not use this machine for anything other than its intended use.

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

• Do not use the boom to service other equipment.

Ensure that all saw tooth retaining bolts are at correct torque value. Refer to section 2 of THIS MANUAL for correct values.

• Do not use the boom to lift items such as tires, engines, cylinders, boom components, etc.

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

• Do not modify the boom system.

Always replace saw tooth retaining bolts when replacing saw teeth.

• Do not add hooks or lugs to the boom for the purpose of attaching lifting rigging.

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

• Do not use the attachment for anything other than its intended use.

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

Shut down machine immediately if vibration occurs during cutting.

Run saw disc only at recommended cutting speed.

Check that the saw discharge area is clear and undamaged.

Maintain a safe operating distance between the workers and equipment. It is the duty of the operator to ensure that no person approach the machine while in use.

Failure to follow the above instructions could result in serious injury or death.

Never use this machine to clear a logging deck on a new tract of timber when the rest of the equipment and operator's are also moving in.

Preplan to clear decks in advance before other equipment arrives.

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

Know where your co-workers are. Make sure that they are always out of harms way before beginning the cut.

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

Do not over load felling head.

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

Stop the saw blade before leaving the cutting area.

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

Be alert for dead or decaying trees. Tops can break off while cutting.

To stop the blade from rotating, CAREFULLY lower the saw blade onto a stump gently to prevent unnecessary loading of the saw blade, saw housing and bearings.

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

When cutting, properly position felling head in front of tree and have saw blade running at full speed.

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

1.17

As debris is always being released from the saw housing, the operator must remain in the cab until the blade has stopped rotating completely.

Safety

Tigercat Bunching and Felling Saws WHEN PARKING THE MACHINE

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

Park machine at least 15 m (50 ft) away from other equipment and in a cleared area. In the event of a fire, this distance will minimize the chance of the fire spreading to other equipment.

Before leaving operator's cab, lower the attachment onto the ground.

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

1. Park on level ground only and engage the swing brake.

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

2. Do not park on a hillside or incline.

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.

3. Lower attachment onto level ground.

4. Stop the engine.

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

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

OFF 24863A

ON 24863A R0

Before transporting the machine check to ensure that all doors, panels and access covers are installed properly and secured. Improperly secured doors or panels pose a serious danger to pedestrians and other vehicles.

During transportation of the machine, ensure there is enough clearance on both sides and above the machine or any of its attachments to avoid contact with power or telephone lines, bridge structures, etc.

1.18

Tigercat Bunching and Felling Saws

Safety

SERVICING SAFETY PRECAUTIONS

WARNING Before using the saw blade lock pin the engine must be turned OFF, the saw blade must have come to a complete stop and the felling head must be supported.

The saw blade lock pin must be used for all maintenance procedures requiring access to the exposed portion of the blade and teeth, such as saw tooth replacement and saw tooth sharpening. Refer to SAW BLADE LOCK PIN in SECTION 2 of THIS MANUAL for instructions on the proper use of this safety device.

Conduct maintenance inspections at least as frequently as recommended in SECTION 2 of THIS MANUAL.

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

WARNING

24863A

When servicing or repairing equipment, turn OFF the engine and remove the ignition key. Turn battery disconnect switch OFF and lock out the switch in accordance with local regulations. Some machines are equipped with a remotely operated battery disconnect relay. Some wiring on the machine is live even when the battery disconnect switch is OFF. When servicing the electrical system, remove the battery cables from the batteries disconnecting the negative cables first.

Hot fluids and hot machine surfaces can cause serious burns!

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

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

Follow applicable lock-out procedures. Install a 'DO NOT OPERATE' tag on the cab door and in the engine compartment when making repairs to the machine.

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

Install saw guard.

WARNING

IMPORTANT!

Before using the saw blade guard and locking bolt the engine must be turned OFF, the saw blade must have come to a complete stop and the felling head must be supported.

34.5 kPa (5 psi) MAXIMUM. Before servicing hydraulic system, wearing eye protection, release air pressure from tank using air vent valve.

The guard must be installed when working on the saw motor hydraulic circuit or when the saw head is not being used. Refer to SAW BLADE GUARD AND LOCKING PIN SECTION 2 of THIS MANUAL for instructions on the proper use of this safety device.

After service is completed, close air vent valve and add air pressure from a clean air source to the hydraulic tank via the Schrader valve. Do not exceed 34.5 kPa (5 psi). Refer to HYDRAULIC TANK PRESSURIZATION INSTRUCTIONS in the MACHINE MANUAL for details.

PRESSURIZED HYDRAULIC TANK.

1.19

Safety

Tigercat Bunching and Felling Saws

Prior to Welding on any part of the machine, it should be cleaned and a fire extinguisher must be made available at the welding location.

DISCONNECT THE MULTI-PIN PLUG FROM THE XS2 MODULE

Care must be taken in attaching the welding machine grounding clamp so current does not pass through bearings, especially the wrist and swing bearings.

Turn OFF the battery disconnect switch before removing the battery compartment cover.

Remove the positive (+) and negative (–) battery cables from the batteries disconnecting the negative (–) cables first.

Disconnect Engine ECU Due to the sensitive electronics on some machines the following additional precautions must be taken.

A typical Tigercat machine is shown here as an example: DISCONNECT THE TWO MULTI-PIN PLUGS FROM THE ENGINE ECU

DISCONNECT THE TWO MULTI-PIN CONNECTORS IN THE HARNESS

H845D-018

Disconnect the multi-pin connector from the XS2 computer module in the cab electrical compartment.

DISCONNECT 4 PIN ENGINE POWER CONNECTOR H845C-001

CAB FUSE AND RELAY PANEL

ENGINE ECU DISCONNECT

Disconnect the engine ECU (Electronic Control Unit) by unplugging the four pin engine power connector and the two multi-pin connectors from the left side of the engine.

855D-025

DISCONNECT THE MULTI-PIN PLUGS FROM THE XA2 MODULES

Disconnect the multi-pin connectors from the XA2 computer modules in the battery compartment.

1.20

Tigercat Bunching and Felling Saws

Safety

Never use your bare hand to check for fluid leaks.

WARNING

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

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

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

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

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.

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

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

Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower the attachment to the ground, stop engine and relieve trapped pressure before performing work on components, or disconnecting any hoses. Refer to PARKING BOOM diagram (FIG. 1). Accumulators will self drain within two minutes of stopping the engine.

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

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.

STICK CYLINDERS FULLY EXTENDED

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

Never stand on the felling head butt plate, either with the clamping arms open or closed.

TIP OF STICK BOOM FULLY SUPPORTED 845C-002

FIG.1 - PARKING BOOM

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

1.21

Safety

Tigercat Bunching and Felling Saws

FOR WHEEL FELLER BUNCHERS

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

Always install 'T' handle retainer bolt.

Use only to support boom and felling head.

Do not use to set hydraulics pressures. Always wear proper safety equipment such as safety glasses and gloves during blade service.

1.22

Tigercat Bunching and Felling Saws

Safety

MACHINE MODELS EQUIPPED WITH AN ER BOOM SYSTEM

SWITCHABLE ER BOOM FUNCTION Some Tigercat machines are equipped with a switchable ER valve to provide ER boom function or non-ER boom function. This function is switched on or off by a button switch and the Computer Controller. For complete details refer to ER BOOM SYSTEM, SPECIAL OPERATING INSTRUCTIONS in section 2 of the MACHINE OPERATOR'S manual.

WARNING Some Tigercat machines are equipped with an ER boom system. Because of this, it may behave in an unexpected manner compared to a conventional boom system.

Pay attention to the following when servicing the ER Boom System. Certain hydraulic circuits are inter-connected in order to provide level headtravel and to recirculate hydraulic oil to reduce heat generation and fuel consumption. As a result, disconnecting hydraulic lines from one cylinder may release pressure in a different cylinder at the same time. Before attempting to disconnect hydraulic hoses or perform work on the boom system, ensure that: 1. The machine is parked on level ground with the attachment on the ground (FIG. 1).

2. The stick cylinders are fully extended (FIG. 1) or the hoist cylinder fully retracted (FIG. 2).

3. If the attachment has been removed make sure the tip of the stick boom is supported.

55987BUNI R0

STICK CYLINDERS FULLY EXTENDED

TIP OF STICK BOOM FULLY SUPPORTED 845C-002

FIG.1 - PARKING BOOM

HOIST CYLINDER FULLY RETRACTED

TIP OF STICK BOOM FULLY SUPPORTED 845C-003

FIG.2 - ER BOOM SYSTEM

1.23

Safety

Tigercat Bunching and Felling Saws

Before performing work under the boom system ensure it is firmly supported.

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.

WARNING

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

Always follow the instructions and safety warnings in THIS MANUAL before approaching the felling head to make adjustments.

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

Dispose of fluids properly.

WARNING

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

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

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

NEVER SERVICE BLADE OR ANY PART OF FELLING HEAD WITH ENGINE RUNNING.

CAUTION

When performing required hydraulic checks and blade speed adjustments. Install the saw blade guard. Refer to SECTION 2 of THIS MANUAL for instructions.

Do not open cab doors or window screens when cab is on a slope. The doors and screens are heavy and could swing out with considerable force. Anyone in the path of swing could be injured.

As with any attachment device NEVER ACCESS THE MACHINE UNDER THE ATTACHMENT in the raised position.

Anyone opening the door or screen and holding on to it could be pulled out of the cab and injured.

The saw blade is very heavy. Use a lifting device of suitable capacity when moving the blade.

MACHINE MODELS EQUIPPED WITH A LEVELING SYSTEM

When opening or closing power operated engine door, watch for personnel in door areas.

Always install support braces in the leveling mechanism while performing service and maintenance tasks. This area is a crush zone.

Keep clear to avoid personal injury or death.

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.

1.24

Tigercat Bunching and Felling Saws

Safety

FLUID INJECTION INJURY

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

WARNING

When searching for possible fluid leaks:

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

• NEVER search for leaks with your bare hands.

Always wear thick protective gloves.

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

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

• Be sure to wear safety goggles for eye protection.

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

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

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

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

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

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

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

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

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

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

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

In the event of any suspected fluid injection injury: • Report the injury to your supervisor immediately.

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

• Seek professional medical attention immediately.

• Never use any hoses that you suspect could be defective.

1.25

Safety

Tigercat Bunching and Felling Saws

GREASE INJECTION INJURY WHEN USING PNEUMATIC GREASE GUNS Pneumatic grease guns can deliver grease at pressures from 17 – 400 bar (246 – 5801 psi).

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

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

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

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

Prior to using a high pressure pneumatic grease gun perform the following: • All operators of high pressure pneumatic grease guns MUST be trained in the hazards of its operations and the treatment for such injuries.

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

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

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

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

• Remove dirt and grease from grease fittings prior to greasing.

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

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

1.26

Tigercat Bunching and Felling Saws

Safety LIGHTNING SAFETY

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

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

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

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

1. Designate a member of your crew to: ▪▪ Monitor daily weather forecasts ▪▪ Observe local weather conditions ▪▪ Alert all other members of the crew when a possible lightning threat develops 2. Don’t start or continue any work that cannot be stopped immediately, when a storm moves nearby.

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

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

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

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

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

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

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

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

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

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

1.27

Safety

Tigercat Bunching and Felling Saws

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

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

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

If you can, get inside: Run to the nearest building, motor vehicle or fully enclosed ROPS equipment cab immediately.

Being anywhere outside is not safe.

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

This is called the skin effect.

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

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

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

If inside a building: • Don’t watch the lightning storm from open windows or doorways. Stay in inner rooms.

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

If inside a motor vehicle or fully enclosed ROPS equipment cab: • Under no circumstances whatsoever step outside of the vehicle or off the equipment to move to another shelter. Very dangerous electrical pathways to ground may go through you.

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

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

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

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

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

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

1.28

Tigercat Bunching and Felling Saws

Safety WHAT TO DO IF YOU FEEL YOUR SKIN TINGLING, YOUR HAIR STANDS ON END, LIGHT METAL OBJECTS VIBRATE OR YOU HEAR A CRACKLING SOUND:

If you are caught outside and have nowhere to go: • Avoid wide-open areas where you project above the surrounding landscape.

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

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

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

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

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

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

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

• Avoid entering any small enclosures or shelters.

WHAT TO DO IF A CO-WORKER HAS BEEN STRUCK BY LIGHTNING:

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

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

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

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

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

• Do not use the telephone except for emergencies.

• Call your local emergency response telephone number immediately.

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

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

• To further increase your awareness about lightning safety, see the following web sites: ▪▪ National Weather Service Lightning Safety http://www.lightningsafety.noaa.gov ▪▪ National Lightning Safety Institute http://www.lightningsafety.com

1.29

Safety

Tigercat Bunching and Felling Saws 3. Blow off all forest debris and fine organic material accumulated near hot engine exhaust components (turbocharger and exhaust manifold as well as exhaust pipes and muffler) at the completion of each work shift or more frequently when working in logging conditions where large amounts of combustible forest debris are present.

Visual inspection after blow off to ensure thorough cleanliness is vital. Engine exhaust systems provide numerous small pockets where saw dust, small wood chips and other flammable forest debris can gather. Even small accumulations close to hot exhaust components can ignite and smoulder. If dislodged this smouldering debris can fall into other areas of the machine and thereby spread a fire.

FIRE PREVENTION

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

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

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

1. Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. 2. Remove debris and blow out dust regularly from the air intake doors, engine radiator and charge air cooler, hydraulic oil cooler, diesel fuel cooler and air conditioning condenser core to prevent overheating of the engine and hydraulics and to maintain efficient operation of the machine. Refer to CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR in SECTION 2 of the MACHINE OPERATOR’S MANUAL.

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

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

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

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

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

8. Use only non-flammable solutions for cleaning the machine and components.

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

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

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

1.30

Tigercat Bunching and Felling Saws

Safety

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

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

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

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

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

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

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

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

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

WHAT TO DO TO PREPARE FOR A MACHINE FIRE • Prevent the fire from happening in the first place by ensuring that all machine systems are frequently inspected and always well maintained.

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

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

• Ensure that any pressurized water systems on the machine (if applicable) are charged and in working order. Refer to PRESSURIZED WATER SYSTEM MAINTENANCE in SECTION 3 of the MACHINE MANUAL. • Ensure that you have the proper fire extinguishers on site. Most fires involving mobile forestry equipment will be Class A or B. 15. Remove all keys, lock equipment and fuel cap at the end of operations to reduce the risk of vandalism.

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

1.31

Safety

Tigercat Bunching and Felling Saws

Dry chemical extinguishers should be rated ABC and pressurized water extinguishers should be rated A.

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

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

Class A fires involve ordinary combustibles such as wood, cloth, paper, rubber and many plastics, Class B fires occur with flammable liquids such as diesel fuel, oil and grease and Class C fires apply to energized electrical equipment.

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

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

WHAT TO DO WHEN A MACHINE FIRE OCCURS

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

If operating the machine when a fire occurs:

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

3. Activate the fire suppression system**.

1. Lower all working attachments to the ground.

2. Turn OFF the engine.

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

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

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

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

All fires can be very dangerous and life threatening.

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

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

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

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

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

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

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

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

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

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

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

6. If possible a dry chemical fire extinguisher or fire suppression system** should be used first to fight a machine fire. Then immediately afterwards use the pressurized water hose supplied with the machine (if applicable) or a

1.32

Tigercat Bunching and Felling Saws

Safety

pressurized water extinguisher (if available). A fire suppressed by dry chemical may re-ignite from the heat retained by any debris or hot machine components in the area. The water will cool the area, reducing the chances of re-ignition.

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

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

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

▪▪ Remain with the machine until help arrives.

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

Do not aim the nozzle at the flames.

In order to put out the fire, you must extinguish the fuel, not the flames.

Hose nozzles are often clipped to the extinguisher body. Release the hose before taking aim.

WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED • Before returning the machine to work.

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

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

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

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

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

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

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

822C-190

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

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

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

1.33

Safety

Tigercat Bunching and Felling Saws

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

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

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

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

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

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

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

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

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

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

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

1.34

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

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

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

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

USING HIGH-SPEED DISC SAWS SAFELY DANGER 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.

DANGER

CONTENTS - APPENDIX TO SECTION 1 C

COMMENTS AND INSTRUCTIONS DIRECTION OF THROW...........................................................................................................................................A.7 HIGH ANGLE WRIST ROTATION ABILITY...............................................................................................................A.8 RECOGNIZING THE DANGERS...............................................................................................................................A.7 THROWING LONG WOOD PIECES.......................................................................................................................A.10 D

DANGERS.....................................................................................................................................................................A.3 F

FOREWORD.................................................................................................................................................................A.2 BE AWARE OF THE HAZARDS................................................................................................................................A.3 OTHER INSTRUCTIONS..........................................................................................................................................A.3 SAFE PRACTICES....................................................................................................................................................A.3 SEVERAL TYPES OF HEADS INVOLVED...............................................................................................................A.2 STORED ENERGY....................................................................................................................................................A.3 H

HIGH ANGLE WRIST ROTATION CAPABILITY...........................................................................................................A.9 S

SAW HEAD DON'TS...................................................................................................................................................A.15 T

TYPE OF HOUSING MAKES A DIFFERENCE.............................................................................................................A.4

5211A • R4-1015

Using High-Speed Disc Saws Safely

Tigercat

FOREWORD SEVERAL TYPES OF HEADS INVOLVED

Tigercat wheel type feller bunchers (figure 1) and crawler feller bunchers (figure 2) 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.

SAW25A

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

SAW24

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

A.2

Tigercat

Using High-Speed Disc Saws Safely

STORED ENERGY

OTHER INSTRUCTIONS

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.

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

BE AWARE OF THE HAZARDS

There are at least these means by which a rotating disc saw can cause harm by throwing:

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.

• 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.

SAFE PRACTICES

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

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.

• 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.

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

A.3

Using High-Speed Disc Saws Safely

Tigercat

HOUSING TYPES 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

SAW13

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.

A.4

SAW17

Tigercat

Using High-Speed Disc Saws Safely

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

SAW14

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

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

SAW15

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

SAW12

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

A.5

SAW18

Using High-Speed Disc Saws Safely

Tigercat

HOUSING TYPES CONTINUED 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.

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.

A CHIP ESCAPE PORT CAN ALLOW THROW BEHIND THE MACHINE

REAR

FRONT

FIGURE 6a SAW19 SAW20 SAW26

FIGURE 6b

FIGURE 6c

FIGURE 6: ADDITIONAL OPENING IN THE HOUSING SKIRT.

A.6

Tigercat

Using High-Speed Disc Saws Safely ASSESSING THE POTENTIAL DANGERS ON THE JOB SITE

COMMENTS AND INSTRUCTIONS

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.

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.

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.

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.

A.7

Using High-Speed Disc Saws Safely

Tigercat

COMMENTS AND INSTRUCTIONS CONTINUED 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.

A.8

Tigercat

Using High-Speed Disc Saws Safely

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.

SAW21A SAW23

FIGURE 7: DISC SAW FELLING HEAD WITH HIGH ANGLE WRIST ROTATION CAPABILITY A.9

Using High-Speed Disc Saws Safely

Tigercat 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.

COMMENTS AND INSTRUCTIONS CONTINUED 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.

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

SLAB

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

SLAB

TH DIR ROW EC TIO N

N DI

E

FE

SAW10

FIGURE 8

SAW2

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

IF THE SIDE OF A LOG CAN CONTACT THE SAW, THE THROW ENGAGEMENT DISTANCE CAN BE LONG FELLING HEAD MOVING INTO SLAB/LOG

SLAB

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

FEED IN SAW7

FIGURE 8B SIDE VIEW

SAW7

A.10

FIGURE 8C TOP VIEW

Tigercat

Using High-Speed Disc Saws Safely

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

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

ED

FE

IN

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

FELLING HEAD MOVING INTO LOG PILE

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

SAW3

THROW ENGAGEMENT DISTANCE SMALL LOG LOG PILE

FEED IN

A SAW HOUSING WITHOUT SNOUTS ALLOWS A LONG THROW ENGAGEMENT DISTANCE

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

SAW8

FIGURE 9b SIDE VIEW

FEED IN

SAW8

A.11

FIGURE 9c TOP VIEW

Using High-Speed Disc Saws Safely

Tigercat

COMMENTS AND INSTRUCTIONS CONTINUED 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.

THROW ENGAGEMENT DISTANCE

UNCUT TREE OR STUMP BACKUP

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

FELLING HEAD MOVING INTO LOG

SAW6

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

SAW11

FIGURE 11: A BLOCK OF WOOD CAN BE TOSSED WHEN TRIMMING STUMPS A.12

Tigercat

Using High-Speed Disc Saws Safely

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

THROW GAP

SAW122

FIGURE 12: SAW BLADE THROW GAP

A.13

Using High-Speed Disc Saws Safely

Tigercat

COMMENTS AND INSTRUCTIONS CONTINUED 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 outgoing opening is larger to allow the housing to clean itself and will allow most things inside to be thrown out

The ingoing entrance OF THE HOUSING for the saw rim of teeth should be small SAW22 SAW22A SAW22B

FIGURE 13: SAW BLADE ENTRANCE AND EXIT SPACE

A.14

Tigercat

Using High-Speed Disc Saws Safely

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.

A.15

Using High-Speed Disc Saws Safely

Tigercat

A.16

Tigercat Bunching and Felling Saws SECTION 2 - OPERATING, SERVICE AND MAINTENANCE CONTENTS - SECTION 2

ISSUE 7.0, JULY, 2016

B

BUTT PLATE REPLACE (BOLTED) - MODELS 5001, 5601 (WHEEL MACHINE).......................................................................2.82 REPLACE (WELDED) - MODELS 5000, 5400, 5500, 5600, 5700.........................................................................2.78 BUTT PLATE AND POCKET FLOOR REPLACE - MODELS 5000, 5400, 5500, 5600..............................................2.74 C

CYLINDER SEALS 1 PIECE PISTON....................................................................................................................................................2.86 2 PIECE PISTON....................................................................................................................................................2.87 F

FELLING SAW PART NAMES - DOUBLE POST.........................................................................................................2.4 FELLING SAW PART NAMES - SINGLE POST..........................................................................................................2.5 FELLING TECHNIQUES...............................................................................................................................................2.6 I

INITIAL START-UP OF A NEW SAW HEAD................................................................................................................2.15 L

LUBRICATION POINTS MODELS DT5000 AND DT5300.............................................................................................................................2.21 MODELS DW5000, DW5500 AND DW5600...........................................................................................................2.19 MODEL ST5400......................................................................................................................................................2.23 MODEL ST5701......................................................................................................................................................2.25 MODEL ST5702......................................................................................................................................................2.27 MODEL ST5702-26.................................................................................................................................................2.29 MODEL SW570.......................................................................................................................................................2.31 N

NEW SAW MAINTENANCE FIRST 50-100 HOUR INSPECTION AND SERVICE REPORT..............................................................................2.15 PRE-DELIVERY INSPECTION...............................................................................................................................2.15 START-UP OF A NEW SAW HEAD.........................................................................................................................2.15 O

OPERATING PRINCIPAL..............................................................................................................................................2.3 P

PREVENTIVE MAINTENANCE SCHEDULE..............................................................................................................2.15 S

SAW BLADE INSPECTION...........................................................................................................................................................2.37 INSTALLATION USING CHAIN HOIST AND SLING...............................................................................................2.52 INSTALLATION USING THREADED RODS...........................................................................................................2.51 REMOVAL METHOD FOR TRACK FELLER BUNCHERS................................................................. 2.46, 2.49, 2.85 REMOVAL METHOD FOR WHEEL OR TRACK FELLER BUNCHERS.................................................................2.46 REMOVAL TOOL KIT..............................................................................................................................................2.47 RUNOUT CHECK....................................................................................................................................................2.40 SERIAL NUMBER IDENTIFICATION......................................................................................................................2.36 SERIES DESIGNATIONS.......................................................................................................................................2.36 STOPPING THE SAW BLADE................................................................................................................................2.14 WEAR LIMITS.........................................................................................................................................................2.38 SAW BLADE GUARD AND LOCKING BOLT..............................................................................................................2.35 SAW BLADE LOCK PIN..............................................................................................................................................2.34 SAW DRIVE - HYDRAULIC........................................................................................................................................2.88 CHECK MOTOR CASE DRAIN FLOW.................................................................................................................2.100 DESCRIPTION........................................................................................................................................................2.88 HYDRAULIC SETUP AND ADJUSTMENTS...........................................................................................................2.90 SAW CIRCUIT PRESSURE CHECK.......................................................................................................................2.96 SAW SPEED ADJUSTMENT..................................................................................................................................2.94 SET BEGIN OF REGULATION.....................................................................................................................2.92, 2.93 START-UP PROCEDURE.......................................................................................................................................2.90 TEST ANTI-CAVITATION AND MOTOR CONTROL CHECK VALVE............................................................2.98, 2.99 SAW DRIVE SPINDLE COMPONENTS - BOLT ON SPINDLE DRIVE CAP..............................................................2.67 END PLAY ADJUSTMENT......................................................................................................................................2.72 END PLAY CHECKING PROCEDURE...................................................................................................................2.68 INSTALLATION.......................................................................................................................................................2.66 REMOVAL...............................................................................................................................................................2.64 SAW DRIVE SPINDLE PULLER.............................................................................................................................2.64

Operating Instructions

Tigercat Bunching and Felling Saws

SAW DRIVE SPINDLE COMPONENTS - THREADED SPINDLE LOCKNUT............................................................2.57 END PLAY ADJUSTMENT......................................................................................................................................2.62 END PLAY CHECKING PROCEDURE...................................................................................................................2.59 INSTALLATION.......................................................................................................................................................2.56 REMOVAL...............................................................................................................................................................2.54 SAW DRIVE SPINDLE PULLER.............................................................................................................................2.54 SAW DRIVE SPINDLE END PLAY DESCRIPTION....................................................................................................2.58 SAW DRIVE SPINDLE HOUSING TEMPERATURE CHECK.....................................................................................2.53 SAW HOUSING WEAR LINER...................................................................................................................................2.85 SAW TEETH INSPECTING...........................................................................................................................................................2.41 REPLACING............................................................................................................................................................2.44 ROTATING..............................................................................................................................................................2.43 SCHEDULED MAINTENANCE...................................................................................................................................2.17 EVERY 175 HOURS...............................................................................................................................................2.17 EVERY 500 HOURS...............................................................................................................................................2.17 EVERY DAY............................................................................................................................................................2.17 EVERY WEEK.........................................................................................................................................................2.17 T

TORQUE CHART........................................................................................................................................................2.32 TORQUE SPECIFICATIONS - GENERAL..................................................................................................................2.33 TROUBLESHOOTING BLADE SPEED......................................................................................................................2.97 W

WEAR LINER..............................................................................................................................................................2.85 WRIST ASSEMBLY - 30º...........................................................................................................................................2.101 DESCRIPTION......................................................................................................................................................2.101 HYDRAULIC CIRCUIT DESCRIPTION.................................................................................................................2.102 WRIST ASSEMBLY...............................................................................................................................................2.101 WRIST CYCLE TIMES..........................................................................................................................................2.104 WRIST ASSEMBLY - 110º.........................................................................................................................................2.106 ADJUST OIL FLOW...............................................................................................................................................2.110 CYLINDER ATTACHMENT POINTS.....................................................................................................................2.106 HYDRAULIC CIRCUIT DESCRIPTION.................................................................................................................2.108 SCHEMATIC DIAGRAM............................................................................................................................2.107, 2.109 WRIST ASSEMBLY...............................................................................................................................................2.107 WRIST CYCLE TIMES..........................................................................................................................................2.110 WRIST ASSEMBLY - 340° HIGH TORQUE..............................................................................................................2.118 HYDRAULIC CIRCUIT DESCRIPTION.................................................................................................................2.120 MOTOR AND OUTPUT SHAFT CONVERTING RIGHT HAND AND LEFT HAND ASSEMBLIES.......................2.147 MOTOR AND OUTPUT SHAFT SEAL REPLACEMENT......................................................................................2.145 SCHEMATIC DIAGRAM........................................................................................................................................2.121 WRIST ASSEMBLY...............................................................................................................................................2.119 WRIST ASSEMBLY - 340° STANDARD TORQUE.................................................................................................... 2.112 HYDRAULIC CIRCUIT DESCRIPTION - EARLY.................................................................................................. 2.114 HYDRAULIC CIRCUIT DESCRIPTION - LATER.................................................................................................. 2.116 OUTPUT SHAFT DISASSEMBLY/ASSEMBLY (STANDARD TORQUE WRIST).................................................2.140 WRIST BEARING SEAL REPLACEMENT................................................................................................................2.149 WRIST BEARING WEAR LIMITS.............................................................................................................................2.150 WRIST CONTROL MANIFOLD.................................................................................................................................2.122 WRIST GENERAL SETUP PROCEDURE 340º WRIST...........................................................................................2.123 WRIST TROUBLESHOOTING..................................................................................................................................2.123

2.2

Tigercat Bunching and Felling Saws

Operating Instructions

OPERATING PRINCIPAL

SAW CONTROLS

Tigercat saws are high speed continuous motion type disc saw felling heads designed to be more productive by accumulating larger bunches of trees with faster cycle times. Larger felling head bunches makes it easier to build large neatly aligned skidder piles reducing the amount of manoeuvring required by the skidder.

All Tigercat carriers (sold with saw attachments) are equipped with the following: • • • • • • •

The harvesting concept employed here is generally referred to as “High speed continuous motion felling”. In the case of drive to tree felling, this involves lining up the felling head with the tree and travelling or driving forward with both the clamp and accumulating arms open and the saw blade turning at full speed, and without stopping, continuing to drive into the tree with the saw blade to cut the tree. The butt of the tree slides onto a butt plate, positioned just above the blade, which supports the tree. Immediately after the tree is cut both clamp arms close, transferring the tree to the pocket and holding it secure, as the process repeats itself.

Saw switch Saw pressure gauge (wheel feller bunchers only) Accumulator arm control Clamp arm control Wrist control (track feller bunchers only) Saw control valve Saw pump

The location and type of saw controls varies according to base machine model.

For specific information on saw operating controls refer to section 2 of the base machine Operator’s Manual.

In the case of swing and boom to tree felling, the procedure is the same except that the blade is fed into the tree by combining the boom, stick and tilt controls.

The saw blade is a high inertia type blade.

Cutting is done with the inertia (stored energy) in the rotating blade. The hydrostatic drive motor brings the blade back up to speed after each cut is made.

Tigercat saws can be installed on either a wheel (drive to tree) or track (swing and boom to tree) type carrier.

2.3

Operating Instructions

Tigercat Bunching and Felling Saws

UPPER HORN STRUCTURE

ACCUMULATOR ARM

FRAME

CLAMP ARM

LOG POCKET

DRIVE SPINDLE

SAW DRIVE MOTOR (UNDER COVER)

BUTT PLATE HOUSING SKIRT SNOUT SAW BLADE SKIS

TOOTH

SKIS

SAW30

SNOUT

DOUBLE POST FELLING SAW PART NAMES 2.4

Tigercat Bunching and Felling Saws

Operating Instructions

UPPER HORN STRUCTURE

LINK

CLAMP ARM

ACCUMULATOR ARM CLAMP ARM

SAW DRIVE MOTOR AND SPINDLE (UNDER COVER) BUTTPLATE SAW HOUSING

SAW BLADE

SNOUT

SKIS HOUSING SKIRT

SNOUT

SKIS

SAW87

SINGLE POST FELLING SAW PART NAMES 2.5

Operating Instructions

Tigercat Bunching and Felling Saws

TIGERCAT SAW FELLING TECHNIQUES 1. Before operating any Tigercat Saw read and understand the SAFETY PRECAUTIONS at the beginning of this manual.

TILT FELLING HEAD FORWARD 3° TO 5°

2. Start engine and ensure that hydraulic oil is at operating temperature.

3. Ensure that all personnel are clear of the cutting area.

4. Turn saw blade on and bring it up to operating speed: It takes approximately 25 to 35 seconds for the saw blade to reach full speed from the stationary position.

5. Open both the clamp arm(s) and the accumulating arm(s).

6. Place the felling head in the slightly tilted forward position (no more than 5°).

SAW84

SWING AND BOOM TO TREE FELLING HEAD POSITION MODELS ST5400/5700

7. DRIVE TO TREE Drive the machine forward toward the tree and feed the saw blade into the tree at a steady speed. The correct blade feed speed for a 12" tree is approximately 1/2 second.

TILT FELLING HEAD FORWARD 3° TO 5°

8. SWING AND BOOM TO TREE Assuming the tree is within reach, swing the boom around and line up the felling head with the tree, then use a combination of the machine's boom, stick and tilt controls (non ER booms) to feed the saw blade through the tree with a smooth horizontal action and at a steady speed. The correct blade feed speed for a 12" tree is approximately 1/2 second.

SAW36A

Moving the head up or down during the cut will cause the blade to undergo unnecessary stress and it may stall before the cut is complete. The correct technique is quickly learned.

DRIVE TO TREE FELLING HEAD POSITION MODELS DW5000/5500/5600

Feeding too fast makes a poor cut and stalls the blade. Feeding too slow creates excessive heat.

2.6

Tigercat Bunching and Felling Saws

Operating Instructions

9. As the cut is being made, begin to close both the clamp and accumulating arms around the tree. Immediately after the cut is complete, close the clamp arm(s) tightly. This will transfer the severed tree into the back of the log storage pocket making room for additional trees.

IMPORTANT! Do not clamp the tree until after the cut is complete.

IMPORTANT! Do not hold the clamp arm control switch in the close position once the tree is pulled into the log storage pocket. This will cause the hydraulic oil temperature to rise and result in hydraulic component wear.

10. To avoid stalling the blade on the stump, raise the felling head as soon as the cut is complete.

NOTE: If stalling does occur part way through the cut, do not move or tilt the head up or down to pry it loose, this could damage the head or bend the blade. Pull the blade straight back out of the cut and allow the blade to reach full rotational speed before continuing to cut.

WARNING Do not leave the operator's cab until the partially cut tree has been felled TO ACCUMULATE ADDITIONAL TREES IN THE LOG STORAGE POCKET: 11. Close accumulating arm(s) and hold first tree in pocket. Completely open clamp arm(s) and position felling head in front of the next tree.

12. Cut second tree and close clamp arm(s).

13. Open the accumulating arm(s). The accumulating arm(s) will slide out from between the first and second tree. Close accumulating arm(s) to hold both trees in the pocket.

14. Fully open clamp arm(s) and proceed to third tree and repeat steps 11, 12, and 13 until pocket is full.

2.7

Operating Instructions

Tigercat Bunching and Felling Saws 3. Immediately after completion of cut, both sets of arms close on tree.

FELLING TECHNIQUES - MODELS DW5000, 5500, 5600 1. Open both clamp and accumulating arms.

Advance to cut first tree.

ACCUMULATING ARM

CLAMP ARM

SAW32

SAW30

2. Cut continues and clamp arm (2) begins to close on tree, immediately followed by accumulating arm (3).

3

2

SAW31

2.8

Tigercat Bunching and Felling Saws

Operating Instructions

4. Hold first tree with accumulating arm, advance to cut second tree and close clamp arm.

6. Hold two trees with accumulating arm, advance to cut third tree and close clamp arm. Repeat steps 4 and 5 until log pocket is full.

SAW33

5. With both trees held with clamp arm, withdraw accumulating arm.

SAW35

SAW34

2.9

Operating Instructions

Tigercat Bunching and Felling Saws 3. Immediately after completion of cut, both sets of arms close on tree.

FELLING TECHNIQUES - MODEL ST5400 1. Open both clamp and accumulating arms.

Advance to cut first tree.

CLAMP ARMS

ACCUMULATING ARM

SAW89 SAW87

2. Cut continues and clamp arms (2) begins to close on tree, immediately followed by accumulating arm (3).

2

3

SAW88

2.10

Tigercat Bunching and Felling Saws

Operating Instructions

4. Hold first tree with accumulating arm, advance to cut second tree and close clamp arms.

6. Hold two trees with accumulating arm, advance to cut third tree and close clamp arms. Repeat steps 4 and 5 until accumulation area is full.

SAW90

5. With both trees held with clamp arms, withdraw accumulating arm.

SAW92

SAW91

2.11

Operating Instructions

Tigercat Bunching and Felling Saws 3. Immediately after completion of cut, both sets of arms close on tree.

FELLING TECHNIQUES - MODEL ST5700 1. Open both clamp and accumulating arms.

Advance to cut first tree.

CLAMP ARMS

ACCUMULATING ARMS

SAW78 SAW76

2. Cut continues and clamp arms (2) begins to close on tree, immediately followed by accumulating arm (3).

2 2 3 3

SAW77

2.12

Tigercat Bunching and Felling Saws

Operating Instructions

4. Hold first tree with accumulating arms, advance to cut second tree and close clamp arms.

6. Hold two trees with accumulating arms, advance to cut third tree and close clamp arms. Repeat steps 4 and 5 until accumulation area is full.

SAW81

5. With both trees held with clamp arms, withdraw accumulating arms.

SAW83

SAW82

2.13

Operating Instructions

Tigercat Bunching and Felling Saws

STOPPING THE SAW BLADE

WARNING

WHEN LOCATED IN BUSH CUTTING AREA:

•

To stop the blade from rotating, place the engine speed control in low idle position. Turn the saw switch to the off position and carefully lower the saw blade onto a stump. This should be done gently to prevent unnecessary loading of the saw blade, saw housing and bearings.

•

Do not let it free wheel, the saw blade will take several minutes to come to a complete stop.

•

WHEN LOCATED IN A SHOP AREA: Place the engine speed control in the low idle position, wait (approximately 30 seconds) for saw blade to slow down sufficiently that a pressure of less than 500 psi shows on the pressure gauge. Turn the saw switch to the off position and wait until the saw blade has stopped turning before shutting the engine off.

If the saw blade guard is not installed, cordon off the blade area to protect other personnel in the area.

WARNING Never leave a saw head unattended with the saw blade running, or the boom in the raised position. Always rest the felling head on the ground and stop the blade.

WARNING Never leave the operator's cab until the saw blade has stopped rotating.

WARNING Never shut the engine off until the saw blade has come to a complete stop.

2.14

Before installing or removing saw blade guard or locking bolt, saw must be at a complete stop and engine must be shut down.

Saw guard MUST BE INSTALLED when working on the saw motor hydraulic circuit or when the saw head is not being used.

Refer to individual procedures in THIS MANUAL for proper use of saw blade guard and locking bolt.

Tigercat Bunching and Felling Saws

Service and Maintenance

PREVENTIVE MAINTENANCE SCHEDULE FOR Tigercat SAWS NEW SAW MAINTENANCE *INITIAL PRE-DELIVERY INSPECTION:-

PERFORM THE INITIAL PRE-DELIVERY INSPECTION OF THE FELLING HEAD IN CONJUNCTION WITH THE MACHINE INSPECTION USING Tigercat "PDI AND 125 HOUR INSPECTION REPORT" FORM.

*FIRST 125 HOUR INSPECTION AND SERVICE REPORT:-

WITH THE OWNER'S MECHANIC PRESENT, PERFORM AN INSPECTION AND SERVICE OF THE FELLING HEAD IN CONJUNCTION WITH THE MACHINE INSPECTION AND SERVICE ACCORDING TO THE Tigercat "PDI AND 125 HOUR INSPECTION REPORT" FORM. THIS MUST BE COMPLETED WITHIN THE FIRST 125 HOUR TIME FRAME. *IMPORTANT: TO QUALIFY FOR CONTINUED WARRANTY, THIS REPORT MUST BE COMPLETED AND RETURNED TO Tigercat Industries Inc. WARRANTY DEPARTMENT. INITIAL START-UP OF A NEW SAW HEAD

PORT 'M'

The following procedure should be performed whenever a new saw head is installed (or major maintenance has been done to a saw head). This procedure will ensure that the spindle bearings have been properly set before operating the saw under load. Refer also to SAW DRIVE, HYDRAULIC: HYDRAULIC SETUPS AND ADJUSTMENTS: START-UP PROCEDURE and WRIST ASSEMBLY - 340º: INITIAL START-UP PROCEDURE (if applicable).

MINIMUM DISPLACEMENT ADJUSTING SCREW

DANGER FRONT VIEW OF MOTOR

Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

SAW-D01

1. Park machine on firm level ground, lower felling head to the ground, engage parking brake or swing brake (as applicable) and stop engine. Block wheels or tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

SAW SPEED ADJUSTMENT 'X'

2. Ensure hydraulic oil is at operating temperature.

3. If saw blade speed has not yet been set check saw motor minimum displacement adjusting screw.

TYPICAL 'X' DIMENSION FOR MIN. DISPLACEMENT ADJUSTING SCREW b. Remove the minimum displacement adjusting screw from the side of the motor housing and measure its length.

DIM X

a. Remove saw motor cover.

2.15

Service and Maintenance

Tigercat Bunching and Felling Saws

NEW SAW MAINTENANCE c. Reinstall the minimum displacement adjusting screw and locknut into the motor housing and set dimension 'X' to 9.5 mm (160cc motor) 13 mm (170cc motor) for a 110 mm screw. For a longer screw, measure the length of the screw and add the difference to the 'X' dimension.

IMPORTANT! Do not set dimension 'X' less then 9.5 mm (160cc motor) 13 mm (170cc motor).

Screw failure will occur and damage to the saw motor will result. Pump displacement will require adjustment if the max blade speed specification cannot be attained at that setting. d. Reinstall saw motor cover.

DANGER Carry out this procedure with care. Make sure that there are no chips or blocks of wood remaining in the saw housing that could be thrown by the rotating blade.

WARNING Never leave the operator's cab until the saw blade has stopped rotating.

WARNING Never shut the engine off until the saw blade has come to a complete stop.

4. Clear area under saw of all loose dirt, stones, wood and debris.

5. Raise saw head 6" off the ground and position wrist in the vertical plane (if applicable).

8. Turn saw switch on.

9. Run saw with engine at low idle for 10 minutes.

10. Slowly increase engine speed to high idle.

11. Run saw with engine at high idle for 10 minutes.

12. Check spindle housing temperature. Spindle bearing housing should be roughly the same as hydraulic oil temperature or less. Maximum temperature should not be higher than 82°C (180°F). If temperature is too high stop the saw following STOPPING THE SAW BLADE in this section. Allow the saw spindle housing to cool then check saw drive spindle assembly end play (as per PDI), check spindle and bearing lubrication and check vent fittings for proper operation. Refer also to SAW DRIVE SPINDLE ~ CHECKING SAW DRIVE SPINDLE HOUSING TEMPERATURE in this section for more information. Return to step 6. If spindle housing temperature is acceptable proceed to step 13.

13. Place the engine speed control in the low idle position. Wait for blade to slow down, then turn saw switch off and wait for blade to come to a complete stop before shutting the engine off.

14. Allow spindle bearings to cool before operating the saw under load.

15. Spindle bearings are now properly seated.

16. Continue with hydraulic setup and initial start procedures. Refer also to SAW DRIVE, HYDRAULIC: HYDRAULIC SETUPS AND ADJUSTMENTS and WRIST ASSEMBLY 340º: INITIAL START-UP PROCEDURE (if applicable).

6. Warn all persons to stay clear of the area, especially the discharge side of saw head.

7. Start engine and place the engine speed control in low idle position.

2.16

Tigercat Bunching and Felling Saws

Service and Maintenance

SCHEDULED MAINTENANCE EVERY DAY:

EVERY WEEK:

• Check saw tooth condition and rotate or replace teeth as necessary.

• Perform DAILY service and in addition: • Remove drive motor guard and inspect for debris build up around motor. Remove debris and replace guard.

• Check for damage to disc blade.

• Check spindle end play (0.003" - 0.005").

• Inspect saw housing for wear. If a problem is found corrective action should be taken immediately. Repair or replace excessively worn wear liners or wear pads. The wear pad at the saw blade inlet must be maintained to minimize blade and housing wear and possible circulation of large debris.

• Check tooth retaining bolt torques.

• Check saw blade bolt torques.

• Check butt plate bolt torques, where applicable.

• Lubricate clamp arms, accumulator arms, cylinders and links as applicable to saw model.

See lubrication chart for number of fittings, purge*

WARNING

• Lubricate upper and lower saw drive spindle bearings (at operating temperature).

The wear liners in the saw housing must be maintained to prevent perforation of the saw housing and possible uncontrolled discharge of debris.

2-fittings, one shot of grease for every hour of operation at each fitting.

IMPORTANT! Use a manual grease gun to prevent damage to seal*.

EVERY 175 HOURS: • Perform DAILY and WEEKLY service and in addition: • Lubricate spindle spline adapter.

1-fitting, eight shots*

• Lubricate wrist bearing, cylinders and gears where applicable.

• Lubricate tilt cylinder and boom attachment points.

• Lubricate upper and lower saw drive spindle bearings (at operating temperature).

Refer to base machine service manual.

CAUTION

2-fittings, until grease purges from vent (relief) fittings.

When lubricating the upper and lower saw drive spindle bearings, Use a manual grease gun to prevent damage to seal, NEVER use a power grease gun.

EVERY 500 HOURS: • Perform DAILY, WEEKLY and 175 HOUR service and in addition: • Check saw blade speed.

WARNING Pay attention to all safety instructions outlined in section 1 of this manual.

Wear safety gloves at all times when handling and working around the saw blade.

Use recommended safety stands and devices when called for.

Always block wheels or tracks of carrier.

Work on solid ground.

• Check all hydraulic pressures.

• Inspect saw and boom attachment for damage and repair as necessary. *Use lithium based EP2 grease containing 3% - 5% molybdenum disulfide.

2.17

Service and Maintenance

Tigercat Bunching and Felling Saws

LUBRICATION

Refer to the SCHEDULED MAINTENANCE and the following charts and illustrations to determine frequency and location of lubrication points:

ITEM

EVERY DAY

EVERY 175 HOURS

LUBRICATION SCHEDULE FOR Tigercat® MODEL DW5000, DW5500 AND DW5600 SAWS

1 2 3 4 5

LUB LUB LUB LUB LUB

CLAMP ARM CLAMP ARM CYLINDER ACCUMULATOR ARM ACCUMULATOR ARM CYLINDER LUB SAW DRIVE SPINDLE BEARINGS

NUMBER OF LUB. FITTINGS

DESCRIPTION

2 2 2 2 2 WITH NOTE: A MANUAL GREASE GUN MUST BE 2 VENT USED TO PREVENT DAMAGE TO THE SEAL. FITTINGS DO NOT USE POWER GREASE GUNS.

6

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE* LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS.

LUB SPINDLE SPLINE ADAPTER 1 8-SHOTS* * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

2.18

Tigercat Bunching and Felling Saws

Service and Maintenance

TYPICAL BOOM ON WHEEL MACHINE

4

3 3 4 1 2 1

'C' 'B' 'A'

2

DW5600 (EARLY DESIGN LOCATION)

FRAME WELDMENT

SPINDLE SPLINE ADAPTER LUB FITTING

6

2

CLAMP CYL. BEARING

PLUG

SAWPLT

SAW72

VIEW 'A' UNDERSIDE OF BLADE

FRAME WELDMENT (SAW DRIVE HOUSING)

SAW MOTOR VENT FITTINGS FRAME WELDMENT (SAW DRIVE HOUSING)

UPPER SPINDLE BEARING

5

LOWER SPINDLE BEARING

5

SAW70

UPPER VENT FITTING

LOWER VENT FITTING

5 5

SAW79

VIEW 'B' MODEL DW5600 (LATER DESIGN) ONLY

VIEW 'C' MODEL DW5600

LOWER SPINDLE BEARING UPPER SPINDLE BEARING

SAW80

VIEW 'B' MODEL DW5000 AND DW5500 ONLY

LUBRICATION POINTS - MODELS DW5000, DW5500 AND DW5600 2.19

2 CLAMP CYL. BEARING

EVERY DAY

1 2 3 4 5

LUB LUB LUB LUB LUB

6 7 8 9 10 11

LUB LUB LUB LUB LUB

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODELS DT5000, AND DT5300 SAWS

EVERY 175 HOURS

ITEM

Service and Maintenance

NUMBER OF FITTINGS 2 2 2 2 2 WITH 2 VENT FITTINGS

DESCRIPTION

CLAMP ARM CLAMP ARM CYLINDER ACCUMULATOR ARM ACCUMULATOR ARM CYLINDER LUB SAW DRIVE SPINDLE BEARINGS

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE*

LUBRICATE AT OPERATING TEMPERATURE. NOTE: A MANUAL GREASE GUN MUST BE USE LITHIUM BASED EP2 GREASE*.

USED TO PREVENT DAMAGE TO THE SEAL. DAILY: ONE SHOT FOR EVERY HOUR DO NOT USE POWER GREASE GUN. OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. LUB SPINDLE SPLINE ADAPTER 1 8-SHOTS* Tigercat 30° WRIST BEARING 4 PURGE* KW WRIST BEARING 4 PURGE* WRIST CYLINDER 2 PURGE* WRIST BEARING (340° WRIST) 3 4-SHOTS* EVERY 45° STOP -TO-STOP WRIST PINIONS (340° WRIST) 3 10-SHOTS* AT EACH FITTING * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

11

11

11

WRIST BEARING

10

VIEW 'A' - WRIST BEARING LUBRICATION

'A' SAW175 WRIST-100

340° WRIST LUBRICATION 2.20

Tigercat Bunching and Felling Saws

Service and Maintenance

9 9

3

8 7

3

8

ALTERNATIVE 4 LOCATION

7

4

7

1

8

TYPICAL BOOM ON TRACK MACHINE

7

'C'

2 1

'A'

'B' FRAME WELDMENT

SPINDLE SPLINE ADAPTER LUB FITTING

6

ACCUM. CYLINDER

4

VIEW 'C' - LATER DESIGN DT5000

PLUG SAWPLT

VIEW 'A'

FRAME WELDMENT (SAW DRIVE HOUSING)

SAW73

UPPER VENT FITTING

FRAME WELDMENT WRIST BEARING

8

LOWER VENT FITTING

8

LOWER

5 SPINDLE

BEARING

2

UPPER 5 SPINDLE BEARING SAW80

CLAMP CYL. BEARING

VIEW 'B' SAW85

SAW71

8

4

WRIST ACCUM. BEARING CYLINDER

VIEW 'C' - EARLIER DESIGN DT5000 HEADS (USING KOEHRING WATEROUS WRIST)

LUBRICATION POINTS MODELS DT5000 AND DT5300 2.21

8

EVERY DAY

1 2 3 4 5 6

LUB LUB LUB LUB LUB LUB

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODEL ST5400 SAW

EVERY 175 HOURS

ITEM

Service and Maintenance

NUMBER OF FITTINGS 3 2 2 2 2 2 WITH 2 VENT FITTINGS

DESCRIPTION

CLAMP ARMS CLAMP ARMS CYLINDER CLAMP ARM LINK ACCUMULATOR ARM ACCUMULATOR ARM CYLINDER LUB SAW DRIVE SPINDLE BEARINGS NOTE: A MANUAL GREASE GUN MUST BE USED TO PREVENT DAMAGE TO THE SEAL. DO NOT USE POWER GREASE GUN.

7 8

LUB

9

LUB

10

LUB

LUB SPINDLE SPLINE ADAPTER WRIST BEARING (30° WRIST) WRIST BEARING (110° WRIST) WRIST BEARING (340° WRIST) WRIST CYLINDER (30° WRIST) WRIST CYLINDERS (110° WRIST) WRIST PINIONS (340° WRIST)

1 4 4 2 2 4 3

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE* LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. 8-SHOTS* PURGE* PURGE* 4-SHOTS* EVERY 45° STOP -TO-STOP PURGE* PURGE* 10-SHOTS* AT EACH FITTING

* LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

10 VIEW 'B' WRIST BEARING LUBRICATION (EARLIER DESIGN)

10

WRIST BEARING

8

VIEW 'A' WRIST BEARING LUBRICATION (LATER DESIGN)

10

8 WRIST BEARING SAW139X WRIST -100

340° WRIST LUBRICATION 2.22

'A'

'B'

Tigercat Bunching and Felling Saws

Service and Maintenance

9

8 8

8

'A' 8 8

LOWER VENT FITTING

9

6

6

LOWER SPINDLE BEARING

UPPER SPINDLE BEARING

8

9 8

1 9

3

2

9 SAW138

2

110° WRIST LUBRICATION

1 7

SPINDLE SPLINE ADAPTER LUB FITTING

4

5

SAWPLT SAW98 SAW97

VIEW 'A'

PLUG

SAW100

CLAMP AND ACCUMULATING ARMS

LUBRICATION POINTS MODEL ST5400 2.23

1

5

EVERY DAY

1 2 3 4 5 6 7

LUB LUB LUB LUB LUB LUB LUB

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODEL ST5701 SAW

EVERY 175 HOURS

ITEM

Service and Maintenance

DESCRIPTION

CLAMP ARMS CLAMP ARMS CYLINDER CLAMP ARMS LINK ACCUMULATOR ARMS ACCUMULATOR ARMS CYLINDER ACCUMULATOR ARMS LINK LUB SAW DRIVE SPINDLE BEARINGS NOTE: A MANUAL GREASE GUN MUST BE USED TO PREVENT DAMAGE TO THE SEAL. DO NOT USE POWER GREASE GUN.

8 9 10 11

NUMBER OF FITTINGS 3 2 2 5 2 2 2 WITH 2 VENT FITTINGS

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE*

LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. 8-SHOTS*

LUB SPINDLE SPLINE ADAPTER 1 WRIST BEARING (30°) 4 PURGE* VARY WRIST POSITION TO WRIST BEARING (110°) 4 LUB ENSURE FULL RACE LUBRICATION WRIST BEARING (340°) 2 WRIST CYLINDER (30°) 2 LUB PURGE* WRIST CYLINDER (110°) 4 WRIST PINIONS 3 10 SHOTS* AT EACH FITTING LUB * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

9

10

11

10

VIEW 'A' WRIST BEARING

9

11

9

'A' 11 9

10

SAW138

110° WRIST LUBRICATION

SAW139

2.24

340° WRIST LUBRICATION

Tigercat Bunching and Felling Saws

Service and Maintenance

10

9 9

9 9

'B' 'A'

7 UPPER VENT FITTING BEHIND COVER

SPINDLE SPLINE ADAPTER LUB FITTING

8

UPPER SPINDLE BEARING

PLUG SAWPLT

VIEW 'A' 2 1

UPPER SPINDLE BEARING

UPPER VENT FITTING

7

3

LOWER VENT FITTING

4 6

LOWER 7 SPINDLE BEARING

4 SAW99 SAW94 SAW93

VIEW 'B'

SAW96

4

1

6

CLAMP AND ACCUMULATING ARMS

LUBRICATION POINTS MODEL ST5701 2.25

5

5

EVERY DAY

1 2 3 4 5 6 7

LUB LUB LUB LUB LUB LUB LUB

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODEL ST5702 SAW

EVERY 175 HOURS

ITEM

Service and Maintenance

NUMBER OF FITTINGS CLAMP ARMS 3 CLAMP ARMS CYLINDER 2 CLAMP ARMS LINK 2 ACCUMULATOR ARMS 5 ACCUMULATOR ARMS CYLINDER 2 ACCUMULATOR ARMS LINK 2 2 LUB SAW DRIVE SPINDLE BEARINGS WITH 2 NOTE: A MANUAL GREASE GUN MUST BE VENT USED TO PREVENT DAMAGE TO THE SEAL. FITTINGS DESCRIPTION

DO NOT USE POWER GREASE GUN.

8 9

10 11

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE*

LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. 8-SHOTS*

LUB SPINDLE SPLINE ADAPTER 1 WRIST BEARING (30°) 4 WRIST BEARING (110°) 4 PURGE* VARY WRIST POSITION TO LUB WRIST BEARING (340° EARLY) 2 ENSURE FULL RACE LUBRICATION WRIST BEARING (340° LATER) 3 WRIST CYLINDER (30°) 2 LUB WRIST CYLINDER (110°) PURGE* 4 WRIST PINIONS 3 10 SHOTS* AT EACH FITTING LUB * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE 9

10 9 VIEW 'A' WRIST BEARING (LATER DESIGN) VIEW 'B' WRIST BEARING (EARLY DESIGN)

10

9

11

9

11 9

10

SAW138

110° WRIST LUBRICATION

SAW139X WRIST -100

2.26

'B' 'A'

340° WRIST LUBRICATION

Tigercat Bunching and Felling Saws

Service and Maintenance

10

9

9

UPPER VENT FITTING BEHIND COVER

'A'

9

'B'

7

UPPER SPINDLE BEARING

SPINDLE SPLINE ADAPTER LUB FITTING

8

SAWPLT

VIEW 'A'

PLUG

2 1

UPPER SPINDLE BEARING

3

7

4 7

UPPER VENT FITTING BEHIND COVER

LOWER SPINDLE BEARING

SAW190

SAW189 SAW188

6

LOWER VENT FITTING

VIEW 'B'

4 SAW96

4

1

6

CLAMP AND ACCUMULATING ARMS

LUBRICATION POINTS MODEL ST5702 2.27

5

5

EVERY DAY

1 2 3 4 5 6 7

LUB LUB LUB LUB LUB LUB LUB

8 9 10

EVERY 175 HOURS

ITEM

Service and Maintenance

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODEL ST5702-26 SAW

NUMBER OF FITTINGS CLAMP ARMS 3 CLAMP ARMS CYLINDER 2 CLAMP ARMS LINK 2 ACCUMULATOR ARMS 5 ACCUMULATOR ARMS CYLINDER 2 ACCUMULATOR ARMS LINK 2 2 LUB SAW DRIVE SPINDLE BEARINGS WITH 2 NOTE: A MANUAL GREASE GUN MUST BE VENT USED TO PREVENT DAMAGE TO THE SEAL. FITTINGS DESCRIPTION

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE*

LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY DO NOT USE POWER GREASE GUN. HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. LUB SPINDLE SPLINE ADAPTER 1 8-SHOTS* LUB WRIST BEARING (340°) 3 PURGE* VARY WRIST POSITION TO ENSURE FULL RACE LUBRICATION WRIST PINIONS 3 10 SHOTS* AT EACH FITTING LUB * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

9 VIEW 'A' WRIST BEARING

10 10 10

'A' SAW193 WRIST-100

340° WRIST LUBRICATION 2.28

Tigercat Bunching and Felling Saws

2 VENT FITTINGS (UPPER AND LOWER SPINDLE BEARINGS)

Service and Maintenance

'A'

7

7

FRONT GREASE FITTING (LOWER SPINDLE BEARING)

8

REAR GREASE FITTING (UPPER SPINDLE BEARING)

SPINDLE SPLINE ADAPTER LUB FITTING

2 1 PLUG SAWPLT

VIEW 'A'

3

4 6

4 SAW96 SAW192 SAW191

4

1

6

CLAMP AND ACCUMULATING ARMS

LUBRICATION POINTS MODEL ST5702-26 2.29

5

5

EVERY DAY

1 2 3 4 5 6 7

LUB LUB LUB LUB LUB LUB LUB

8

EVERY 175 HOURS

ITEM

Service and Maintenance

Tigercat Bunching and Felling Saws

LUBRICATION SCHEDULE FOR Tigercat® MODEL SW5700 SAW

NUMBER OF FITTINGS CLAMP ARMS 3 CLAMP ARMS CYLINDER 2 CLAMP ARMS LINK 2 ACCUMULATOR ARMS 5 ACCUMULATOR ARMS CYLINDER 2 ACCUMULATOR ARMS LINK 2 2 LUB SAW DRIVE SPINDLE BEARINGS WITH 2 NOTE: A MANUAL GREASE GUN MUST BE VENT USED TO PREVENT DAMAGE TO THE SEAL. FITTINGS DESCRIPTION

REMARKS / LUBRICANT

PURGE WITH LITHIUM BASED EP2 GREASE*

LUBRICATE AT OPERATING TEMPERATURE. USE LITHIUM BASED EP2 GREASE*.

DAILY: ONE SHOT FOR EVERY DO NOT USE POWER GREASE GUN. HOUR OF OPERATION FOR EACH FITTING EVERY 175: UNTIL GREASE PURGES FROM VENT FITTINGS. LUB SPINDLE SPLINE ADAPTER 1 8-SHOTS* * LITHIUM BASED EP2 GREASE CONTAINING 3%-5% MOLYBDENUM DISULFIDE

2

1 3

4

4 SAW96

'A'

SAW101

SPINDLE SPLINE ADAPTER LUB FITTING

SAWPLT

VIEW 'A'

PLUG

2.30

8

6

5

4

1

6

5

CLAMP AND ACCUMULATING ARMS

Tigercat Bunching and Felling Saws

Service and Maintenance

'B'

7 UPPER SPINDLE BEARING

UPPER VENT FITTING BEHIND COVER

UPPER VENT FITTING UPPER SPINDLE BEARING

LOWER SPINDLE BEARING

'B' UPPER VENT FITTING BEHIND COVER

7

LOWER VENT FITTING

UPPER SPINDLE BEARING SAW190

SAW189

UPPER VENT FITTING

UPPER SPINDLE BEARING

LOWER VENT FITTING

7

LOWER

7 SPINDLE SAW99

SAW102

VIEW 'B'

BEARING

SAW SPINDLE LUBRICATION SW5701

2.31

VIEW 'B' SAW SPINDLE LUBRICATION SW5702

Service and Maintenance

Tigercat Bunching and Felling Saws

TORQUE CHART: LOCATION Saw Blade Mounting bolts Motor Mounting bolts Mounting cap bolts Clamp Arm Stub shaft bolts (earlier design) Stub shaft bolts Stub shaft bolts Stub shaft bolts (earlier design) Stub shaft bolts Pin retaining bolts All Butt Plate Retaining bolts (earlier design only) Retaining bolts (earlier design only) Lower Guard/Ski Retaining bolts Retaining bolts Retaining bolts Retaining bolts Retaining bolts

SAW MODEL

THREAD DIAMETER

ALL

TORQUE (LUBRICATED)

NOTES

lbf-ft

Nm

3/4"-16 UNF GR.8

280-320

380-434

Use anti-seize.

ALL ALL

3/4"-10 UNC GR.8 1/2"-13 UNC GR.8

200-220 80-85

271-298 108-115

Lubricated

5000 5000 5500 5600 5600

5/8"-11 UNC GR.8 3/4"-10 UNC GR.8 3/4"-10 UNC GR.8 5/8"-11 UNC GR.8 3/4"-10 UNC GR.8

160-175 280-310 280-310 160-175 280-310

217-237 380-420 380-420 217-237 380-420

As Applic. 3/4"-10 UNC GR.8 5/8"-11 UNC GR.8

200-220 160-175

271-298 217-237

Lubricated

Lubricated

5000 5600

5/8"-11 UNC GR.8 5/8"-11 UNC GR.8

160-175 160-175

217-237 217-237

5000 5400 5500 5600 5700

5/8"-11 UNC GR.8 3/4"-10 UNC GR.8 3/4"-10 UNC GR.8 3/4"-10 UNC GR.8 3/4"-10 UNC GR.8

160-175 280-310 280-310 280-310 280-310

217-237 380-420 380-420 380-420 380-420

Use loctite (red permanent).

Lubricated

TRACK FELLER BUNCHERS ONLY Wrist cylinder, 30° and 110° rotation Pin retainer bolts 3/4"-10 UNC GR.8 280-310 380-420 Use anti-seize.

Wrist - 30° and 110° rotation Bearing to felling head bolts 1"-14 UNF GR.8 670-690 908-936 Use anti-seize.

Bearing to boom adapter locknuts 1 1/8"-12 UNF L9 400 + half turn 1274-1302 Use anti-seize.

Wrist - 340° rotation Bearing to head bolts 3/4"-16 UNF GR.8 290-310 393-420 Use anti-seize.

Bearing to boom adapter bolts 7/8"-14 UNC GR.8 440-460 596-624 Use anti-seize.

217-237 Use anti-seize.

High torque motor to boom adapter bolts 5/8"-11 UNC GR. 8 160-175 217-237 Use anti-seize.

Output shaft assy to boom adapter bolts 5/8"-11 UNC GR. 8 160-175 Std. torque motor to output shaft assy bolts 1/2"-13 UNC GR. 8 80-85 108-115 Lubricated

2.32

Tigercat Bunching and Felling Saws

Service and Maintenance

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

IMPERIAL DO NOT use these values if a different torque value or

tightening procedure is shown for a specific application.

GRADE 8 BOLTS

GRADE 5 BOLTS

IMPERIAL BOLT TORQUE SPECIFICATIONS GRADE 5 BOLTS GRADE 8 BOLTS

8.8

10.9

8.8

10.9

8.8

10.9

10

10

10

METRIC

LUBRICATED DRY LUBRICATED COARSE lbf-ft Nm lbf-ft Nm lbf-ft Nm THREAD 8 - 10 11 - 13 1/4" - 20 7- 8 10 - 11 8 - 10 11 - 13 20 - 28 27 - 38 5/16" - 18 14 - 18 19 - 24 10 - 15 13 - 20 33 - 36 45 - 49 3/8" - 16 31 - 34 42 - 46 23 - 25 31 - 34 52 - 57 71 - 77 7/16" - 14 49 - 54 66 - 73 37 - 41 50 - 55 80 - 88 109 - 119 1/2" - 13 75 - 83 102 - 112 57 - 63 77 - 85 115 - 127 156 - 172 9/16" - 12 109 - 120 148 - 162 82 - 90 111 - 122 159 - 175 216 - 237 5/8" - 11 150 - 165 204 - 223 113 - 124 152 - 168 282 - 310 393 - 420 3/4" - 10 266 - 293 360 - 397 200 - 220 271 - 298 455 - 501 617 - 679 7/8" - 9 394 - 433 535 - 586 296 - 326 402 - 441 682 - 750 925 - 1016 1" - 8 591 - 649 802 - 879 443 - 489 601 - 663 966 - 1062 1310 - 1441 1 1/8" - 7 794 - 873 1077 - 1183 596 - 656 808 - 889 1360 - 1496 1844 - 2027 1 1/4" - 7 1120 - 1232 1519 - 1670 840 - 924 1139 - 1252 FINE DRY LUBRICATED LUBRICATED lbf-ft Nm lbf-ft Nm lbf-ft Nm THREAD 10 - 13 14 - 17 1/4" - 28 9 - 10 12 - 13 9 - 10 12 - 13 18 - 25 25 - 33 5/16" - 24 17 - 22 23 - 29 16 - 20 21 - 27 37 - 41 50 - 55 3/8" - 24 35 - 39 48 - 53 26 - 29 35 - 39 58 - 64 79 - 86 7/16" - 20 55 - 61 75 - 83 41 - 45 56 - 61 90 - 99 122 - 134 1/2" - 20 85 - 94 116 - 127 64 - 70 87 - 95 128 - 141 174 - 191 9/16" - 18 121 - 133 164 - 180 91 - 100 124 - 135 180 - 198 244 - 268 5/8" - 18 170 - 187 231 - 253 128 - 141 174 - 191 315 - 347 427 - 470 3/4" - 16 297 - 327 403 - 443 223 - 245 303 - 332 501 - 550 679 - 745 7/8" - 14 434 - 477 589 - 646 326 - 359 442 - 486 746 - 821 1012 - 1113 1" - 12 646 - 711 876 - 965 484 - 534 657 - 724 1083 - 1191 1469 - 1613 1 1/8" - 12 891 - 980 1208 - 1328 668 - 735 906 - 996 1509 - 1660 2046 - 2250 1 1/4" - 12 1240 - 1364 1682 - 1849 931 - 1024 1262 - 1387

10

12.9

12.9

10

12.9

12.9

12.9

12

12

DRY lbf-ft Nm 11 - 12 15 - 16 26 - 30 35 - 40 44 -48 60 - 65 70 - 77 95 - 104 106 - 117 144 - 158 153 - 168 208 - 228 212 - 233 288 - 316 376 - 414 510 - 561 606 - 667 822 - 904 909 - 1000 1233 - 1355 1288 - 1417 1746 - 1921 1817 - 1999 2464 - 2710 DRY lbf-ft Nm 13 - 14 18 - 19 23 - 28 31 - 38 49 - 54 67 - 73 78 - 86 106 - 116 120 - 132 163 - 179 171 - 188 232 - 255 240 - 264 326 - 358 420 - 462 570 - 626 668 - 735 906 - 996 995 - 1096 1359 - 1486 1445 - 1590 1960 - 2155 2012 - 2213 2728 - 2997

10

COARSE THREAD 1/4" - 20 5/16" - 18 3/8" - 16 7/16" - 14 1/2" - 13 9/16" - 12 5/8" - 11 3/4" - 10 7/8" - 9 1" - 8 1 1/8" - 7 1 1/4" - 7 FINE THREAD 1/4" - 28 5/16" - 24 3/8" - 24 7/16" - 20 1/2" - 20 9/16" - 18 5/8" - 18 3/4" - 16 7/8" - 14 1" - 14 1 1/8" - 12 1 1/4" - 12

12

METRIC BOLT TORQUE SPECIFICATIONS CLASS 8.8

SIZE PITCH LUBRICATED mm Nm lbf-ft M6 1 8-9 6-7 M8 1.25 20 - 22 15 - 16 M10 1.5 39 - 43 29 - 32 M12 1.75 68 - 75 50 - 55 M14 2 109 - 120 80 - 89 M16 2 169 - 186 125 - 137 M18 2.5 234 - 257 172 - 190 M20 2.5 330 - 364 244 - 268 M22 2.5 451 - 496 332 - 366 M24 3 571 - 628 421 - 463 M27 3 837 - 921 618 - 679 M30 3.5 1135 - 1249 837 - 921 M33 3.5 1545 - 1699 1139 - 1253 M36 4 1985 - 2183 1464 - 1610

CLASS 10.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft Nm lbf-ft 11 - 12 8-9 11 - 12 8-9 15 - 17 11 - 12 26 - 29 19 - 21 27 - 30 20 - 22 36 - 40 27 - 30 52 - 57 38 - 42 54 - 60 40 - 44 72 - 79 53 - 59 91 - 100 67 - 74 94 - 104 70 - 77 126 - 138 93 - 102 145 - 160 107 - 118 151 - 166 111 - 122 201 - 221 148 - 163 226 - 248 166 - 183 234 - 257 173 - 190 312 - 343 230 - 253 312 - 343 230 - 253 324 - 356 239 - 262 431 - 474 318 - 350 441 - 485 325 - 357 457 - 503 337 - 371 610 - 670 450 - 495 601 - 661 443 - 487 623 - 686 460 - 506 831 - 914 613 - 674 761 - 838 562 - 618 790 - 869 583 - 641 1053 - 1159 777 - 855 1116 - 1228 823 - 906 1158 - 1274 854 - 940 1544 - 1699 1139 - 1253 1514 - 1665 1116 - 1228 1570 - 1727 1158 - 1274 2094 - 2303 1544 - 1699 2060 - 2266 1519 - 1671 2137 - 2351 1576 - 1734 2849 - 3134 2102 - 2312 2646 - 2911 1952 - 2147 2745 - 3020 2025 - 2227 3661 - 4027 2700 - 2970 DRY

2.33

CLASS 12.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft 13 - 14 10 - 11 18 - 19 13 - 14 32 - 35 24 - 26 43 - 47 31 - 35 63 - 70 47 - 51 84 - 93 62 - 68 110 - 121 81 - 90 147 - 162 109 - 119 176 - 194 130 - 143 235 - 259 173 - 191 274 - 301 202 - 222 365 - 401 269 - 296 378 - 416 279 - 307 504 - 554 372 - 409 534 - 588 394 - 433 712 - 784 525 - 578 728 - 801 537 - 591 971 - 1068 716 - 788 923 - 1016 681 - 749 1231 - 1354 908 - 999 1354 - 1489 998 - 1098 1805 - 1985 1331 - 1464 1835 - 2019 1354 - 1489 2447 - 2692 1805 - 1985 2498 - 2747 1842 - 2026 3330 - 3663 2456 - 2702 3208 - 3529 2366 - 2603 4278 - 4706 3155 - 3471

Service and Maintenance

Tigercat Bunching and Felling Saws

SAW BLADE LOCK PIN WARNING Pay attention to all safety instructions outlined in section 1 of this manual.

Wear safety gloves at all times when handling and working around the saw blade.

Use recommended safety stands and devices when called for.

Always block wheels or tracks of carrier.

Work on solid ground.

CAUTION DO NOT use this blade lock pin for any hydraulic pressure or blade speed adjustments. The saw blade guard and locking bolt are to be used for any hydraulic pressure or blade speed adjustments. Refer to SAW BLADE GUARD AND LOCKING BOLT in this section.

SAW38

3. Stop the engine and turn the master disconnect switch off.

The saw blade lock pin must be used for all maintenance procedures requiring access to the exposed portion of the blade and teeth, such as saw tooth replacement and saw tooth sharpening.

Before using the saw blade lock pin the engine must be shutdown, the saw blade must have come to a complete stop and the felling head must be supported.

4. Ensure the saw blade has come to a complete stop.

5. Remove the saw blade lock pin from its storage location.

For all other maintenance procedures install the saw blade guard and locking bolt. Refer to SAW BLADE GUARD AND LOCKING BOLT in this section.

PROCEDURE 1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

SAW BLADE LOCK PIN BOLT

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to support the weight of the saw head.

SAW145

For in-woods maintenance, position the felling head with the base of the head supported on firm level ground. Tilt the head back slightly to allow access to the exposed portion of the blade and teeth.

2.34

TYPICAL SAW BLADE LOCK PIN STORAGE LOCATION

Tigercat Bunching and Felling Saws

Service and Maintenance SAW BLADE GUARD AND LOCKING BOLT

6. Install the saw blade lock pin in the slotted inspection cover. The saw blade may need to be rotated slightly to allow the pin to engage completely.

The saw blade guard and locking bolt are to be used for maintenance procedures which do not require access to the exposed portion of the blade and teeth. The saw blade guard and locking bolt are used for any hydraulic pressure or blade speed adjustment procedures.

BOLT SAW BLADE LOCK PIN

Before using the saw blade guard and locking bolt the engine must be shutdown, the saw blade must have come to a complete stop and the felling head must be supported.

For all maintenance procedures which require access to the exposed portion of the blade and teeth the saw blade lock pin must be used. Refer to SAW BLADE LOCK PIN in this section.

STORAGE LOCATION

PROCEDURE:

SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

7. Bolt the saw blade lock pin securely into position with the same bolt provided to hold the pin in its storage location.

8. Perform the maintenance required on the exposed portion of the saw blade and teeth.

Refer to specific maintenance procedures in this manual for further instructions and safety information.

9. Remove the saw blade lock pin from the slotted inspection cover and carefully rotate the saw blade to expose a different section of blade.

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to withstand the weight of the saw head.

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

LOCKING BOLT

10. Install the saw blade lock pin in the slotted inspection cover, slightly rotate the blade for full engagement and fasten securely into position.

11. Perform the maintenance on this portion of the saw blade.

12. Continue to repeat steps 9, 10, and 11 until all maintenance is completed on the saw blade.

13. Remove the saw blade lock pin from the slotted inspection cover and install in the storage location.

14. Bolt the saw blade lock pin securely in the storage location.

SAW BLADE GUARD SAW 63

BLOCK SAW BLADE

5. Install saw blade guard and block saw blade rotation using the locking bolt provided.

6. Perform the maintenance required. Refer to specific maintenance procedures in this manual for further instructions and safety information.

2.35

Service and Maintenance

Tigercat Bunching and Felling Saws

SAW BLADES BLADE SERIAL NUMBER IDENTIFICATION Saw blades can be identified by the blade serial number. The first two digits of the blade serial number represent the blade series number. The first number is the blade kerf, and the second number identifies the blade profile.

First number: 1 = Wide kerf (2 5⁄16") 2 = Narrow kerf (1 7⁄8") 7 = Wide kerf shankless (2 1⁄4") Second number: 3 = Centred web blade 4 = Offset web blade 5 = Offset web blade - non aggressive cut 6 = Offset web blade (modified) Example: A series 13 blade is a wide kerf (2 5⁄16") with a centred web blade profile.

NEW LOCATION

EARLIER LOCATION

SERIES NO.

SAW104

DATE CODE

BLADE SERIAL NUMBER LOCATION

CENTRED WEB SECOND NUMBER = 3

OFFSET WEB SECOND NUMBER = 4, 5 OR 6

SAW-74

BLADE PROFILES

2.36

Tigercat Bunching and Felling Saws

Service and Maintenance

INSPECTING SAW BLADE BOLT

IMPORTANT! Do not perform any welding on the disc blade or saw teeth.

SAW BLADE LOCK PIN

The saw blade should be inspected at the same time as the teeth. Special attention should be paid to tooth holders which hold excessively worn or damaged teeth.

Daily inspection of the blade and teeth is normally done with the blade installed on the saw and the teeth installed on the blade. As a result some surfaces are not visible for inspection. A more thorough inspection of the entire blade and/or teeth should always be done whenever a blade or tooth is removed as a result of performing any service or maintenance procedure.

STORAGE LOCATION SLOTTED INSPECTION COVER

SAW146

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to withstand the weight of the saw head.

For in-woods maintenance, position the felling head with the base of the head supported on firm level ground. Tilt the head back slightly to allow access to the exposed portion of the blade and teeth.

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

5. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

2.37

TYPICAL SAW BLADE LOCK PIN INSTALLATION

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

Service and Maintenance

Tigercat Bunching and Felling Saws

6. Inspect the saw blade for cracks in the areas indicated by the arrows. If any cracks are found the blade must be replaced immediately.

Wear limits for both wide kerf blades and narrow kerf blades are shown below and next page. These wear limits apply to all Tigercat series 13, 14, 24, 26, 74,75, and 76. Special care should be taken in inspecting tooth holders when excessively worn or damaged teeth are found.

7. Inspect the blade for signs of excessive wear in the areas indicated by the arrows.

If blade wear is greater than the wear limit shown the blade must be replaced immediately.

8. Inspect blade for correct blade runout. Refer to CHECK BLADE RUNOUT in this section.

IMPORTANT: THIS FACE MUST BE FLAT FOR PROPER TOOTH SEATING

'C' 'A'

'A'

'B' 'A' SAW113

SAW-P03 SAW-D11

WEAR LOCATION 'A' 'B' 'C' 'D'

INSPECT BLADE FOR CRACKS AND WEAR

BLADE WEAR LIMITS BLADE WEAR LIMITS SERIES SERIES SERIES SERIES 13 14 24 26 0.190" 0.190" 0.190" 0.190" 1.40" 1.40" 1.25" 1.25" 0.5" 0.375" 0.375" 0.5" 0.80"

SERIES 74, 75, 76 0.25" 1.40" 0.375" R1 10/03

2.38

Tigercat Bunching and Felling Saws WEAR LOCATION 'A' 'B' 'C' 'D'

BLADE WEAR LIMITS SERIES SERIES SERIES SERIES 13 14 24 26 0.190" 0.190" 0.190" 0.190" 1.40" 1.40" 1.25" 1.25" 0.5" 0.375" 0.375" 0.5" 0.80"

Service and Maintenance 'D'

BUTT PLATE

SERIES 74, 75, 76 0.25" 1.40" 0.375"

WEAR

R1 10/03

SAW BLADE

'C'

SAW114

SAW140

SERIES 13

'C'

SAW115

SERIES 14 AND 24

'C'

SAW141

SERIES 26

'C'

SAW142

SERIES 74

'C'

SAW194

SERIES 75 AND 76 2.39

WEAR

BLADE WEB WEAR 'D' TYPICAL FOR ALL BLADES

TOOTH

Service and Maintenance

Tigercat Bunching and Felling Saws

CHECK BLADE RUNOUT 1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to support the weight of the saw head.

For in-woods maintenance, position the felling head with the base of the head supported on firm level ground. Tilt the head back slightly to allow access to the exposed portion of the blade and teeth.

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

SAW42

CHECK BLADE FOR RUNOUT

6. The head should be in the vertical position, (saw blade horizontal).

7. Grasp the blade and move it up and down.

8. Rotate the blade by hand to check that it rotates freely without runout.

BOLT SAW BLADE LOCK PIN

STORAGE LOCATION SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

5. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

SAW-P09

9. In addition, use a dial indicator to measure blade runout.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

CAUTION

USE A DIAL INDICATOR TO MEASURE BLADE RUNOUT

a. Place the dial indicator on the saw butt plate. b. Zero the dial indicator and rotate the blade by hand. c. Runout should not exceed 0.100".

10. If runout is greater than 0.100" check for:

Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

a. A bent or distorted blade. b. Excessive spindle end play, causing vertical blade movement. Refer to SPINDLE END PLAY in this section.

2.40

Tigercat Bunching and Felling Saws INSPECTING SAW TEETH

WARNING

Service and Maintenance 6. Check that tooth mounting bolts are torqued to specifications.

Tooth retaining bolt torque with anti-seize as follows:

Failure to replace damaged or worn teeth will result in premature blade wear, poor cutting performance, blade cracks and a safety hazard and will void the blade warranty.

1/2" - 20 X 2 1⁄4" gr 8 = 115 N-m (85 lbf-ft) 1/2" - 20 X 3" gr 8 = 115 N-m (85 lbf-ft) 5/8" - 18 X 2 1⁄4" gr 8 = 217 N-m (160 lbf-ft)

1. Turn the saw off and allow the saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to support the weight of the saw head.

For in-woods maintenance, position the felling head with the base of the head supported on firm level ground. Tilt the head back slightly to allow access to the exposed portion of the blade and teeth.

1" - 14 X 4 1⁄2" gr 8 = 678 N-m (500 ft-lb) IMPORTANT! If tooth mounting bolts are found to be loose all saw teeth should be removed and inspected.

Inspect teeth and blade for cracks, excessive wear or other damage. Replace all cracked, worn or damaged components.

7. Check all teeth and blade for cracks, missing carbide tips or other damage.

Replace damaged teeth promptly. Refer to REPLACING SAW TEETH in this section.

BOLT SAW BLADE LOCK PIN

STORAGE LOCATION SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

5. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

2.41

Service and Maintenance

Tigercat Bunching and Felling Saws

8. Check for wear of the cutting edges of the teeth. The two cutting edges of the tooth should always be:

In addition, carbide tipped teeth should be replaced when wear extends as far as the body of the tooth at the tip, regardless of cutting edge position.

Also, replace the tooth when the gap between the carbide is greater than 1/16".

A. At the furthest distance from the blade centre.

B. The widest point between the top and bottom of the tooth.

C. The blade width (B must be greater than C).

NO WIDER THAN 1/16"

A

SAW-123

If the wear is not too excessive the tooth may be rotated 180° in the housing. Refer to ROTATING SAW TEETH in this section.

B

If excessive wear has taken place the tooth must be replaced. Refer to REPLACING SAW TEETH in this section.

C

SAW-P08

CARBIDE TIP WEAR LIMIT

TOOTH WEAR LIMITS

TOOTH WEAR LIMITS DIMENSION 'B' Series 13, 14 new tooth = 2 5⁄16" or 2 3⁄8" replace at 2 1⁄8" Series 24, 26 new tooth = 1 7⁄8" or 1 15⁄16" replace at 1 3⁄4" Series 74, 75, 76 new tooth = 2 1⁄2" replace at 2 1⁄4" NOTE: The teeth protect the saw blade from wear.

Tooth wear limits are intended to ensure that only the cutting edge of the tooth comes in contact with the tree being cut. The rest of the tooth and blade should pass within the cut made by the cutting edge in order to reduce blade wear.

NOTE: There are numerous tooth options available. Compare new tooth thickness to guidelines above for recommended replacement for best performance, fuel efficiency and saw blade life.

2.42

Tigercat Bunching and Felling Saws

Service and Maintenance

ROTATING SAW TEETH Saw teeth can be rotated 180° to extend the service life of the teeth.

NEW TOOTH

Normally all teeth are rotated at the same time.

Teeth should be rotated when any one of the following conditions exist: •

Tooth corners are chipped exposing the blade to wear.

•

Cutting edges are dull or worn excessively exposing the rest of the tooth and blade to wear.

•

Carbide tips broken off, missing or worn as far as the tooth body.

•

Visible wear appears on the tooth mounting lug. Refer to INSPECTING THE BLADE in this section for limits on acceptable blade wear.

•

Any sign of excessive wear or damage which could result in an imbalance or unsafe operation of the blade. In cases of severe damage which may present a safety hazard, replacement of the tooth is recommended.

WORN TOOTH ROTATED 180°

SAW41

ROTATE WORN TEETH

Rotate teeth 180° as shown. Refer to REPLACING SAW TEETH in this section for information about removing and installing teeth.

Tooth retaining bolt torque with anti-seize as follows: 1/2" - 20 X 2 1⁄4" gr 8 = 115 N-m (85 lbf-ft) 1/2" - 20 X 3" gr 8 = 115 N-m (85 lbf-ft) 5/8" - 18 X 2 1⁄4" gr 8 = 217 N-m (160 lbf-ft) 1" - 14 X 4 1⁄2" gr 8 = 542 N-m (400 ft-lb) IMPORTANT! Always check cutting edge clearance and blade balance after rotating teeth.

2.43

Service and Maintenance REPLACING SAW TEETH CAUTION Two-piece or multi-piece teeth are not recommended for use on Tigercat saw blades.

These teeth can cause damage to the tooth holder of the blade which could cause the tooth to separate creating a safety hazard.

Use only the factory recommended teeth.

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to support the weight of the saw head.

BOLT

Tigercat Bunching and Felling Saws 4. Ensure the saw blade has come to a complete stop.

5. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

SAW TOOTH REMOVAL NOTE: To maintain balance, saw teeth should be replaced in pairs opposite to each other, however if the majority of the teeth are excessively worn then all of the teeth on the blade should be replaced at the same time.

1. Loosen tooth retaining bolt two or three turns.

2. Tap the bolt head until the tooth is loose.

NOTE: Do not hammer on the side of the teeth if they are to be rotated and reused.

3. Remove the bolt and the tooth.

SAW BLADE LOCK PIN

STORAGE LOCATION SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

For in-woods maintenance, position the felling head with the base of the head supported on firm level ground. Tilt the head back slightly to allow access to the exposed portion of the blade and teeth.

3. Stop the engine and turn the master disconnect switch off.

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

2.44

Tigercat Bunching and Felling Saws

Service and Maintenance

SAW TOOTH INSTALLATION

SAW TOOTH REMOVAL AND INSTALLATION TOOLS

IMPORTANT! Do not re-use the original bolts.

1. Socket:

1. Thoroughly clean all mating surfaces and remove any burrs that may be present before installing teeth. Use fine emery paper on both the tooth shank and inside the hole.

1", 12 point, 3/4" drive = part number 211238 1 1⁄16" (M27), 12 point, 3/4" drive = part number DG060

2. Apply anti-seize compound to the tooth shank and the retaining bolt threads and under the head of the bolt.

SAW TOOTH RETAINING BOLT TOOTH SHANK

SAW186

SOCKETS

2. Wrench: 1", 12 point, 3/4" drive = part number 37355A 1 1⁄16" (M27), 12 point, 3/4" drive = part number 40340A

SAW TOOTH SAW41

SAW TOOTH ASSEMBLY

3. Slide the tooth into the hole in the disc, ensure that the tooth seats tightly against the shoulder of the disc blade.

4. Torque the tooth retaining bolts to the specified torque value.

NOTE: Do not use an impact wrench and do not over torque.

SAW187

Tooth retaining bolt torque with anti-seize as follows: 1/2" - 20 X 2 1/4" gr 8 = 115 N-m (85 lbf-ft) 1/2" - 20 X 3" gr 8 = 115 N-m (85 lbf-ft) 5/8" - 18 X 2 1/4" gr 8 = 217 N-m (160 lbf-ft) 1" - 14 X 4 1/2" gr 8 = 542 N-m (400 ft-lb)

2.45

WRENCH

Service and Maintenance SAW BLADE REMOVAL DANGER Observe all safety precautions outlined in this manual when performing this service procedure.

NOTE: Also see SAW BLADE REMOVAL, ALTERNATIVE METHOD FOR TRACK FELLER BUNCHERS in this section.

Tigercat Bunching and Felling Saws 3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

5. Remove the 1 1/4" plug from the base of the log pocket, (Models 5000 and 5600 early heads only).

REMOVE PLUG (MODELS 5000 AND 5600) HEADS ONLY

1. Turn the saw off and allow the saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically on the ground.

SAW36B

PARKING MACHINE

6. Rotate the saw blade until two of the 1" tapped holes in the blade line up with the two holes in the base of the saw housing.

CAUTION

SAW36B

PARKING MACHINE

SAW84A

PARKING MACHINE

Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

2.46

Tigercat Bunching and Felling Saws 7. Use Tigercat special tool kit part number 7709B, thread a 1"- 8 UNC nut, washer and a spacer on the end of each threaded rod.

THREADED ROD

NUT

WASHER

Service and Maintenance 10. Turn the battery disconnect switch on, start the engine and place the felling head onto support stands or two blocks of wood on flat ground.

NOTE: Ensure the support stands are close enough together to support the blade after removal.

SPACER

457 MM (18")

SAW44

THREADED ROD FOR BLADE REMOVAL

8. Insert the rods into the two holes in the saw head base and thread the rods at least 50 mm (2") into the saw blade.

NOTE: Tigercat saw model 5000 and 5600 shown, similar location for models 5400, 5500, and 5700.

THREAD THE RODS AT LEAST 50 MM (2") INTO THE SAW BLADE

SAW BLADE REMOVAL SAW43A 9. Tighten the nuts down onto the saw base taking care not to let the threaded rod turn at the same time.

SAW43B

SAW38

SAW84B

THREADED ROD IN POSITION TO LOWER (OR RAISE) BLADE

2.47

SUPPORTS FOR BLADE REMOVAL

SUPPORTS FOR BLADE REMOVAL

Service and Maintenance

Tigercat Bunching and Felling Saws

11. Raise felling head and remove any guarding that may interfere with removal of the saw blade from the underside of the felling head.

12. Remove the twelve socket head blade retaining bolts and remove the flange (if equipped).

NOTE: The saw blade is now supported only by the two threaded rods.

13. With felling head positioned 25-50 mm (1"2") above supports, lower the blade onto the support stands by turning the 1" nuts counterclockwise on the threaded rods. Make sure that the threaded rods do not turn out of the saw blade when unscrewing the nuts.

If the blade does not release from the saw drive spindle after 2 or 3 turns of the nuts, it may be necessary to pry the blade loose at several different places around the blade.

REMOVE WHEEL BLOCKS AND BACK AWAY FROM SAW BLADE

SAW BLADE REMOVAL 14. After removal, inspect the teeth and blade as described in INSPECTING SAW TEETH and INSPECTING SAW BLADE in this section.

Also check end of drive spindle for burrs or other damage.

SAW39

2.48

Tigercat Bunching and Felling Saws

Service and Maintenance

SAW BLADE REMOVAL, ALTERNATIVE METHOD FOR TRACK FELLER BUNCHERS

7. Place a sling over the stick boom as shown, attached a chain hoist to the end of the sling and the end of the chain to the eye bolt.

DANGER Observe all safety precautions outlined in this manual when performing this service procedure.

SLING

1. Turn saw off and allow saw blade to come to a complete stop.

CHAIN HOIST

2. Park machine on flat solid ground. Open clamp arms sufficiently to allow felling head to rest in a horizontal position. Tilt felling head forward 90° and rest on the ground.

1" EYE BOLT

SAW105

3. Block tracks to prevent machine movement.

4. Stop engine and turn battery disconnect switch off.

5. Remove all blade guards and skis to gain access to saw blade.

SAW107

8. Remove the blade retaining bolts and remove the bottom flange if fitted.

CAUTION

6. Install a 1" eye bolt into one of the four tapped holes in the saw blade.

SAW106

Use a suitable lifting device when removing the bottom flange, bottom flange is heavy.

1" EYE BOLT

2.49

Service and Maintenance

Tigercat Bunching and Felling Saws

9. Use the hoist to remove the saw blade from the drive spindle hub, it may be necessary to pry the blade loose at several different places around the blade.

SAW108

CAUTION Saw blade is heavy, make sure that the blade is supported by the chain hoist before prying it loose from the drive spindle hub.

10. Place the saw blade on support stands to facilitate inspection and possible maintenance.

SAW109

11. Check condition of saw blade and saw teeth as described in INSPECTING SAW BLADE and INSPECTING SAW TEETH in this section.

12. Check condition of drive spindle hub, remove any burrs or scoring that might interfere with reinstallation of saw blade.

2.50

Tigercat Bunching and Felling Saws

Service and Maintenance

SAW BLADE INSTALLATION 1. Clean blade mounting surfaces on both the blade and the spindle. If a flange plate or spindle pilot adapter is being used this should also be cleaned.

2. Lubricate spindle contact surfaces with antiseize compound.

3. With the blade resting on support stands, position the felling head over the blade and align the two large holes in the felling head base with the two tapped holes in the blade.

4. Thread a 1" nut and washer on each threaded rod.

5. Insert the rods into each of the two holes and thread the rods at least 50 mm (2") into the saw blade.

6. Raise the blade by alternately tightening the nuts. When the blade approaches the spindle, raise the felling head and guide the blade onto the pilot of the spindle.

7. Line up the 12 holes in the blade with the tapped holes in the spindle. Always use new (12) 3/4" bolts, lubricate with anti-seize compound and install the bolts hand tight.

8. Tighten all 12 bolts evenly and in several stages to draw the blade up the spindle pilot and seat the blade. Torque bolts in stages: 1st to 1/2 torque, 2nd to 2/3 torque, and 3rd to full torque of 380-434 N-m (280-320 lbf-ft).

3

5

9

1 12

7 11

8

UNDER SIDE OF SAW BLADE

2 SAW64

6

10

4

BLADE BOLT TIGHTENING SEQUENCE

9. Slowly rotate the blade by hand and check for any interference with the butt plate, saw guard or housing.

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush or cut the hands or fingers.

2.51

Service and Maintenance

Tigercat Bunching and Felling Saws

SAW BLADE INSTALLATION USING CHAIN HOIST AND SLING

6. Tighten all 12 bolts evenly and in several stages to draw the blade onto the spindle pilot and seat the blade. Torque bolts in stages: 1st to 1/2 torque, 2nd to 2/3 torque, and 3rd to full torque of 380-434 N-m (280-320 lbf-ft).

1. Clean blade mounting surfaces on both the blade and the drive spindle hub. If a flange plate or spindle pilot adapter is being used this should also be cleaned.

3

2. Lubricate drive spindle contact surfaces with anti-seize compound.

5

9

1 12

7

3. To assist with lining up the blade and drive spindle hub, thread two dowel pins, (Tigercat part number 12083A) into two of the 3/4" threaded holes in the drive spindle hub flange.

11

UNDER SIDE OF SAW BLADE

8

4 6 10 BLADE BOLT TIGHTENING SEQUENCE 2

SAW64

7. Slowly rotate the blade by hand and check for any interference with the butt plate, saw guard or housing.

CAUTION

INSTALL TWO DOWEL PINS

Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

DRIVE SPINDLE HUB

SAW110

4. Use the chain hoist to lift the blade off the support stands and place into position opposite the drive spindle hub.

5. Line up the dowel pins with two holes in the saw blade and install the saw blade on the drive spindle hub. Lubricate the twelve 3/4" saw blade retaining bolts with anti-seize compound and install the bolts hand tight, always use new bolts.

2.52

Tigercat Bunching and Felling Saws

Service and Maintenance

CHECKING SAW DRIVE SPINDLE HOUSING TEMPERATURE The normal temperature of the spindle bearing housing should be roughly the same as the hydraulic oil operating temperature or less.

The hydraulic oil operating temperature varies by carrier and hydraulic oil type but should be in the range of approximately 48°C to 77°C (120°F to 170°F).

Maximum saw drive spindle housing temperature should not be higher than 82°C (180°F). This maximum temperature may be further limited by the type of grease used, refer to manufacturer's recommendations.

If the saw drive spindle housing temperature is too high: •

Check the saw drive spindle assembly end play. Refer to DRIVE SPINDLE END PLAY in this section.

•

Check the spindle and bearings for proper lubrication.

•

Check the vent fittings for proper operation.

IMPORTANT! When lubricating the upper and lower saw drive spindle bearings, use a manual grease gun to prevent damage to seal, never use a power grease gun.

•

Check for signs of excessive greasing.

•

Check for use of the proper type of grease* * USE LITHIUM BASED EP2 GREASE CONTAINING 3% - 5% MOLYBDENUM DISULFIDE.

•

Check bearings for damage.

•

Check bearing seal for damage.

•

Check the saw blade speed. Refer to SAW DRIVE, HYDRAULIC - SAW SPEED ADJUSTMENT and SAW BLADE SPEED in this section.

•

Check the saw blade for damage.

•

Check the drive spindle housing for damage.

•

Check the saw drive motor.

2.53

Service and Maintenance

Tigercat Bunching and Felling Saws

DRIVE SPINDLE REMOVAL (THREADED SPINDLE LOCKNUT) 1. Remove the saw blade. Refer to SAW BLADE REMOVAL in this section.

2. Remove the saw motor cover, saw motor and motor mounting cap and splined adapter.

3. Loosen the bearing locknut on the spindle and back it off half way.

4. Using the drive spindle puller tool part number 5553B, pull the drive spindle down until the locknut makes contact with the inner race of the upper bearing.

Drive spindle puller kit components: A. Rod B. Support Bar C. Spacer D. Washer, flat, 7/8"

SEE NOTE 2

E. Nut, hex. 7/8"-9 UNC Gr. 8

SEE NOTE 1

F. Bolt, hex. 3/4"-10 UNC x 5" lg. Gr. 8 G. Support, puller Puller Note 1: Assemble as shown for 5500 saw Puller Note 2: Assemble as shown for 5000 saw LOCKNUT - LOOSEN AND BACK OFF HALF WAY UPPER BEARING

Puller Note 3: Assemble as shown for 5400 saw Puller Note 4: Assemble as shown for 5600 saw Puller Note 5: Assemble as shown for 5700 saw

SAW DRIVE HOUSING

SAW37

LOCKNUT TURNING TOOL

Note 1: Use (2) 1/2"-13 UNC x 3/4" long bolts for locknut on model 5400, 5500, 5600 and 5700 and later 5000 heads.

Note 2: Use (2) 3/8"-16 UNC x 3/4" long bolts for locknut on earlier model 5000 head.

A A

G

B SEE PULLER NOTE 1

D

SEE PULLER NOTE 2

E

SEE PULLER NOTE 3 SEE PULLER NOTE 4

D E

SEE PULLER NOTE 5

F

SAW45

D

C

SAW DRIVE SPINDLE PULLER 2.54

Tigercat Bunching and Felling Saws

Service and Maintenance

5. Remove the locknut.

11. Remove the lower bearing cone from the spindle. A bearing puller is the best tool to use for removing the lower bearing cone. However if a bearing puller is not available:

6. Insert an eye bolt (1/2"-13 UNC) into the tapped hole located in the top of the drive spindle and support the spindle with a suitable wire rope attached to the upper part of the felling head.

For saws (models 5400, 5500, 5600 and 5700) bolts threaded in through the blade installation holes in the bottom of the spindle can be used to push the lower bearing cone off of the spindle.

EYE BOLT

For saws (model 5000 only) two 1/2" bolts can be used through the two 1/2" tapped holes in the bottom of the spindle to push the lower bearing cone off of the spindle. Or alternatively a soft steel punch can be used in the two 1/2" tapped holes in the bottom of the spindle to push the lower bearing cone off of the spindle.

SAW DRIVE SPINDLE

INSERT 3/4" FINE THREAD OF THREADED RODS INTO DRIVE SPINDLE FLANGE

12. Remove the steel seal ring from the spindle.

13. Remove the upper bearing cup and grease retainer from the saw housing.

14. Remove the lower bearing cup from the saw housing.

TIGHTEN NUTS (C/W) EVENLY TO PULL OUT SPINDLE

SAW 51C

15. Clean all components and thoroughly inspect for wear and damage. Inspect the drive spindle for cracks and the splines and threads for damage.

REMOVE SAW DRIVE SPINDLE

16. Clean out the inside of the saw housing and check for cracks/damage.

7. Continue to pull out the spindle while at the same time loosening the rope.

NOTE: The spindle is heavy, handle with a suitable lifting device to prevent personal injury and damage to the spindle.

8. Lower the spindle and remove it from the saw housing.

9. Remove the spindle seal from the housing and discard. Normally the lower spindle seal is dislodged by interference with the lower bearing during removal of the spindle. If it is not dislodged it must be removed from the housing.

10. Once the spindle is free, remove the rope and eye bolt and remove the upper bearing cone.

2.55

Service and Maintenance

Tigercat Bunching and Felling Saws

DRIVE SPINDLE INSTALLATION (THREADED SPINDLE LOCKNUT)

12. Pull the spindle through the housing by tightening the locknut and tapping the bearing cone down onto the spindle with a mild steel punch. While tightening the locknut check that the lower grease seal is seating properly in the recess. Continue to tighten until the upper bearing cone is firmly up against the bearing cup.

13. Tap around the grease seal in several places using a flat faced mild steel punch to make sure that the seal is seated properly in the housing and is not rubbing against the top side of the spindle flange. On the model 5000 saw use the twelve blade mounting holes. On models 5400, 5500, 5600 and 5700 saws use the two 3/8" dia. plain holes.

NOTE: Always use new bearings, seals and locknut. Refer to the illustration for correct order of parts.

1. Install the lower bearing cup into the housing, with the smaller inside diameter facing up and firmly up against the shoulder in the lower part of the saw housing.

2. Install the upper grease retainer into the upper part of the saw housing with the lip facing up.

3. Install the upper bearing cup into the saw housing with the smaller inside diameter facing down and firmly down against the upper grease retainer in the upper part of the saw housing.

4. Heat lower seal ring in oil to approximately 137°C (280°F) and slide the seal ring onto the spindle making sure that the 45° chamfer faces down.

SAW HOUSING

5. Apply a thin coating of grease to the lip of the grease seal.

SAW DRIVE SPINDLE FLANGE

6. Install the grease seal onto the spindle and around the seal ring with the open side of the seal facing up.

7. Heat lower bearing cone in oil to approximately 137°C (280°F) and install onto spindle with wide side of cone facing down and pressed against the seal ring.

FLAT FACED MILD STEEL PUNCH

8. Pack the lower bearing cone with grease.

9. Place the drive spindle on a jack and proceed to raise the spindle into the saw housing. Take care not to damage the grease seal. Carefully guide the grease seal into the small recess in the saw housing.

SAW 111

GREASE SEAL INSTALLATION

14. Pack the upper bearing cone with grease.

NOTE: The outer mounting surface of the grease seal has a special coating which acts as a lubricant during assembly and then as an adhesive to help hold the seal in place after assembly.

15. Apply grease at the grease fittings to the upper and lower saw spindle bearings until the grease begins to come out of the vent fittings.

Use a hand grease gun to prevent damage to the grease seal.

10. Pre-heat upper bearing cone to approximately 137°C (280°F) and install onto spindle with small end of cone facing down.

11. Apply grease to the threads on the spindle and install a new locknut.

16. Set correct spindle end play. Allow all heated components to cool down prior to setting end play otherwise false readings will result.

Refer to SPINDLE END PLAY ADJUSTMENT - (THREADED LOCKNUT ADJUSTMENT) in this section.

2.56

Tigercat Bunching and Felling Saws

Service and Maintenance

17. Install the saw blade as described in SAW BLADE INSTALLATION in this section.

21

18. For start-up after installing or servicing the spindle, bearings or adjusting endplay refer to INITIAL START-UP OF A NEW SAW HEAD in this section.

1 2 3

20 4 5

SAW DRIVE SPINDLE COMPONENTS

6

1. Capscrew motor mounting cap

19

2. Grease fitting (may be remote mounted on saw housing)

7 3 2

3. Vent fitting (may be remote mounted on saw housing)

18

4. Locknut

17

5. Splined adapter

16

6. Upper bearing cone

15

7. Upper bearing cup

8

8. Saw drive spindle

9

9. Spacer (if required) 10. Spacer (pilot to spigot) (if required) 11. Bolting flange (used on all Tigercat ST, and DT heads) 12. Grease fitting (for lubricating splined adapter) 13. Plug 10

14. Bolt (2 1/4" long without flange (11) 3 1/2" with flange (11) 14

15. Seal ring 16. Grease seal 17. Lower bearing cone

11 12 13

SAW112

18. Lower bearing cup 19. Grease retainer 20. Motor mounting cap 21. Capscrew motor mounting

2.57

SAW DRIVE SPINDLE ASSEMBLY

Service and Maintenance

Tigercat Bunching and Felling Saws

DRIVE SPINDLE END PLAY DEFINITION End play is a measurement of the internal axial clearance of the drive spindle bearings that is, allowable up and down movement of the spindle.

End play is determined by measuring the axial movement of the drive spindle. Correct end play adjustment will maximize the life of the saw drive components. The recommended end play is 0.003" - 0.005" measured when the components are cool to the touch 10°C to 30°C (50°F to 90°F).

A "quick" end play check can be performed by following the DAILY DRIVE SPINDLE END PLAY CHECKING PROCEDURE in this section.

DAILY DRIVE SPINDLE END PLAY CHECKING PROCEDURE

SAW38

NOTE: If using the saw blade lock pin, care should be taken to ensure that there is no interference between the blade lock pin and saw blade while performing this step.

NOTE: The following procedure applies to saw heads with threaded locknut adjustment or bolt on end cap with shim adjustment.

This procedure must be performed when the spindle housing, spindle, and bearings are cool to the touch 10°C to 30°C (50°F to 90°F).

BOLT SAW BLADE LOCK PIN

1. Turn the saw off and allow the saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically on supports strong enough to support the weight of the saw head.

STORAGE LOCATION SLOTTED INSPECTION COVER

3. Stop the engine and turn the master disconnect switch OFF. 4. Ensure the saw blade has come to a complete stop.

SAW146

5. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

6. Wearing gloves, grasp the saw blade and lift up and down several times. Check for any movement. The saw blade is very heavy, do not overstrain.

TYPICAL SAW BLADE LOCK PIN INSTALLATION

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

7. Rotate the saw blade 1/4 turn and repeat procedure (6) in at least four places.

8. If excessive, or no end play movement is detected, refer to the DETAILED DRIVE SPINDLE END PLAY CHECKING PROCEDURE and ADJUSTMENT PROCEDURE for threaded locknut adjustment or bolt on end cap and shim adjustment in this section.

2.58

Tigercat Bunching and Felling Saws

Service and Maintenance

DETAILED DRIVE SPINDLE END PLAY CHECKING PROCEDURE (THREADED LOCKNUT ADJUSTMENT) NOTE: The following outlines the adjustment procedure for saw heads equipped with a threaded locknut to adjust the bearing end play.

This procedure is the most accurate way to measure end play and must be used before doing any end play adjustment. This procedure must be performed when the spindle housing, spindle, and bearings are cool to the touch 10°C to 30°C (50°F to 90°F).

SAW MOTOR RETAINING BOLTS (4)

1. Turn the saw off and allow the saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

SAW DRIVE HOUSING

MOTOR MOUNTING CAP RETAINING BOLTS (6)

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically on supports strong enough to support the weight of the saw head.

MOTOR MOUNTING CAP 132-16A

SAW MOTOR RETAINING BOLTS

LEAVE SPLINE ADAPTER IN TOP OF SPINDLE

LOCKNUT

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

5. Properly install the saw blade guard using all hardware provided. Guard must be secure.

6. Remove the saw motor guard and thoroughly clean the area.

INNER RACE OF UPPER BEARING

7. Disconnect all hydraulic hoses from the saw motor. Plug all hose ends and motor ports to prevent dirt from getting into the system. Label the hose ends for easy reassembly.

SAW 46

8. Remove the four saw motor retaining cap screws and remove the saw motor. Leave the spline adapter in the top of the spindle (drive shaft).

9. Remove the six motor mounting cap retaining cap screws and remove the mounting cap.

Note grease fitting location for reassembly.

NOTE: If this procedure is being performed without a blade installed proceed to step 10. If a blade is installed go to step 16.

2.59

SAW DRIVE HOUSING

SPLINE ADAPTER AND LOCKNUT

Service and Maintenance

Tigercat Bunching and Felling Saws

10. Use the special end play adjustment tool kit available from Tigercat.

12. Position the magnetic base of a dial indicator on the machined surface of the saw drive housing. Place the indicator probe on the top of the locknut and set the indicator to '0'.

For all 5000 series heads use part number 18364A, includes tool and all hardware.

13. Lower spindle by turning the outer nut (7) counterclockwise, allowing the spindle to drop.

Turn the inner nut (6) counterclockwise to push the spindle down and properly seat the upper bearing (11) and ensure that all end play is measured.

For all 5400, 5500, 5600 and 5700 series heads use part number 14613A, includes tool and all hardware.

Position the end play tool (1) over the drive housing (2) and install using 3 bolts (3).

Thread the end play bolt (4) into the end of drive spindle (5). It may be necessary to adjust the inner nut (6) and outer nut (7) to allow installation of the end play bolt (4). Install a single bolt (8) through the end play tool and into the locknut (9) to prevent the spindle from turning.

NOTE: Do not tighten the nut excessively as this will cause bearing preload and an incorrect measurement. Tighten to snug only.

14. Rotate the saw spindle from side to side by hand to compensate for grease build up in the bearing rollers and take several readings around the nut.

11. Turn the outer nut (7) (on the end play bolt 4) clockwise to pull the spindle up and remove all clearance from the lower saw drive bearing (10).

15. The correct reading is 0.003" - 0.005". If the reading falls outside these limits, note the amount and direction of adjustment required.

Refer to END PLAY ADJUSTMENT in this section.

Rotate the saw spindle from side to side by hand to compensate for grease build up in the bearing rollers.

NOTE: Do not tighten the nut excessively as this will cause bearing preload and an incorrect measurement. Tighten to snug only.

BOLT

8

ADJUSTMENT TOOL RETAINING BOLTS (QTY 3)

3

NOTE: Operating the saw when the endplay is outside of these limits will cause premature bearing failure and possible motor, spindle, locknut and seal damage.

7

OUTER NUT

4

END PLAY BOLT

1

ADJUSTMENT TOOL

6 DRIVE HOUSING

14613A

INNER NUT

2

SPINDLE END PLAY ADJUSTMENT TOOL 2.60

9

LOCKNUT

11

UPPER BEARING

5

DRIVE SPINDLE

10

LOWER BEARING

Tigercat Bunching and Felling Saws

Service and Maintenance 20. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

16. Position a lifting device such as a hydraulic jack, on a solid surface beneath the centre of the saw blade. Raise the jack to apply an upward force to the spindle to remove all clearance from the lower saw drive bearing.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

BOLT SAW BLADE LOCK PIN

STORAGE LOCATION

RAISE THE JACK TO APPLY AN UPWARD FORCE TO THE SPINDLE

SLOTTED INSPECTION COVER

SAW27

17. Position the magnetic base of a dial indicator on the machined surface of the saw drive housing. Place the indicator probe on the top of the locknut and set the indicator to '0'.

SPLINED ADAPTER

SAW146

21. Rotate the saw blade 1/4 turn by hand and repeat steps (16) through (20) in at least four places.

DIAL INDICATOR

22. The correct reading is 0.003" - 0.005". If the reading falls outside these limits, note the amount and direction of adjustment required.

Refer to SPINDLE END PLAY ADJUSTMENT (THREADED LOCKNUT ADJUSTMENT) in this section.

TOP OF LOCKNUT

SAW DRIVE HOUSING

NOTE: Operating the saw when the endplay is outside of these limits will cause premature bearing failure and possible motor, spindle, locknut and seal damage.

INDICATOR PROBE

MAGNETIC BASE SAW49

TYPICAL SAW BLADE LOCK PIN INSTALLATION

23. If no adjustment is required: a. Remove the end play tool.

DIAL INDICATOR TO CHECK END PLAY

18. Lower the jack allowing the spindle to drop.

Rotate the saw blade from side to side until the indicator needle settles down. The amount shown on the dial indicator will be the end play.

19. Remove the saw blade guard.

b. Install the splined adapter. c. Install motor mounting adapter. Torque bolts to 108-115 N-m (80-85 lbf-ft). d. Install drive motor. Torque bolts to 271-298 N-m (200-220 lbf-ft). e. Reconnect hoses. f.

2.61

Install saw motor cover.

Service and Maintenance SPINDLE END PLAY ADJUSTMENT (THREADED LOCKNUT ADJUSTMENT) NOTE: All steps in DRIVE SPINDLE END PLAY CHECKING PROCEDURES must be performed first to determine the amount and direction of the required adjustment.

Tigercat Bunching and Felling Saws 3. Remove the splined adapter. Special tool Tigercat part number 20320A can be used to assist with removal.

WARNING Pay attention to all safety instructions outlined in section 1 of this manual.

Wear safety gloves at all times when handling and working around the saw blade.

Use recommended safety stands and devices when called for.

Always block wheels or tracks of carrier.

Work on solid ground.

20320AIL

SPLINED ADAPTER REMOVAL

4. Place a reference mark on matching spline teeth of both the locknut and the spindle.

1. Repeat steps (1) through (9) from DETAILED DRIVE SPINDLE END PLAY CHECKING PROCEDURE.

REFERENCE MARKS ON SPLINES OF LOCKNUT AND THE SPINDLE

LOCKNUT

2. Position a lifting device such as a hydraulic jack, on a solid surface beneath the centre of the saw blade. Raise the jack to apply an upward force to the spindle to remove all clearance from the lower saw drive bearing.

INNER RACE OF UPPER BEARING

SAW DRIVE HOUSING

NOTE: ROTATING LOCKNUT ONE (1) SPLINE REPRESENTS .004" OF END PLAY MOVEMENT

SAW37

REFERENCE MARK SPLINES

5. Block saw blade to prevent it from turning using the locking bolt provided.

LOCKING BOLT

SAW27

JACK PLACEMENT ON SPINDLE

SAW BLADE GUARD

SAW 63

2.62

BLOCK SAW BLADE

Tigercat Bunching and Felling Saws

Service and Maintenance 12. Lower the jack allowing the spindle to drop.

13. Verify end play adjustment by following steps (10) through (15) (no blade installed) or (16) through (23) (with blade installed) in DETAILED DRIVE SPINDLE END PLAY CHECKING PROCEDURE.

USE (2) 1/2"-13 UNC X 3/4" LONG BOLTS FOR LOCKNUT ON MODEL 5400, 5500, 5600 AND 5700 AND LATER 5000 HEADS. USE (2) 3/8"-16 UNC X 3/4" LONG BOLTS FOR LOCKNUT ON EARLIER MODEL 5000 HEAD.

14. If spindle end play is not within the 0.003" - 0.005" tolerance re-adjust as described above.

CAUTION: DO NOT USE BOLTS THAT ARE TOO LONG.

SAW37

15. If no further adjustment is required: a. Install motor mounting adapter. Torque bolts to 108-115 N-m (80-85 lbf-ft).

SPECIAL TOOL FOR ADJUSTING END PLAY

6. Use special tool Tigercat part number 7600A to adjust the locknut.

b. Install drive motor. Torque bolts to 271-298 N-m (200-220 lbf-ft).

7. End play is adjusted by turning the locknut clockwise to reduce, or counterclockwise to increase end play. Rotating the locknut one spline tooth will represent 0.004" of end play movement.

c. Reconnect hoses.

8

d. Install saw motor cover.

Tightening the locknut pulls the spindle up through the inner race of the upper bearing.

It will be necessary to assist movement of the spindle up through the upper bearing by using a blunt ended mild steel punch. Moving around the bearing, strike the inner race as close to the locknut as possible. Do not strike the bearing cage holding the rollers as a damaged cage will require a new bearing.

16. For start-up after adjusting endplay refer to INITIAL START-UP OF A NEW SAW HEAD in this section.

9. Alternate between striking the inner race and turning the locknut until the spline teeth in the locknut and the spindle are properly aligned to allow installation of the splined adapter into the top of the spindle through the locknut.

10. The locknut must always remain tight against the inner race. To verify this, attempt to insert a 0.002" feeler gauge between the locknut and the top of the inner race at four different places around the locknut, if the feeler gauge goes in repeat step (9) until no gap is present.

NOTE: If the end play is too tight, it will be necessary to push the spindle down relative to the upper bearing. This is best accomplished by using a puller (Tigercat part number 5553B) to pull the spindle down. For more information on the use of this puller refer to DRIVE SPINDLE REMOVAL in this section.

11. Remove the Tigercat wrench.

2.63

Service and Maintenance

Tigercat Bunching and Felling Saws

DRIVE SPINDLE REMOVAL (BOLT ON SPINDLE DRIVE CAP)

Puller Note 1: Assemble as shown for 5500 saw

1. Remove saw blade. Refer to SAW BLADE REMOVAL in this section.

Puller Note 3: Assemble as shown for 5400 saw

2. Remove saw motor cover, saw motor, motor mounting cap, and splined adapter (if equipped)

Puller Note 2: Assemble as shown for 5000 saw Puller Note 4: Assemble as shown for 5600 saw Puller Note 5: Assemble as shown for 5700 saw

3. Loosen the spindle drive end cap, cap screws half way.

4. Using the drive spindle puller tool part number 5553B, pull the drive spindle down until the end cap makes contact with the inner race of the upper bearing.

Drive spindle puller kit components: A. Rod B. Support Bar C. Spacer D. Washer, flat, 7/8" E. Nut, hex. 7/8"-9 UNC Gr. 8 F. Bolt, hex. 3/4"-10 UNC x 5" lg. Gr. 8 G. Support, puller

A A

G

B SEE PULLER NOTE 1

D

SEE PULLER NOTE 2 SEE PULLER NOTE 3

E

SEE PULLER NOTE 4

D E

SEE PULLER NOTE 5

F

SAW45

D

C

SAW DRIVE SPINDLE PULLER 2.64

Tigercat Bunching and Felling Saws

Service and Maintenance

5. Remove the locknut.

11. Remove the lower bearing cone from the spindle. A bearing puller is the best tool to use for removing the lower bearing cone. However if a bearing puller is not available:

6. Insert an eye bolt (1/2"-13 UNC) into the tapped hole located in the top of the drive spindle and support the spindle with a suitable wire rope attached to the upper part of the felling head.

For saws (models 5400, 5500, 5600 and 5700) bolts threaded in through the blade installation holes in the bottom of the spindle can be used to push the lower bearing cone off of the spindle.

EYE BOLT

For saws (model 5000 only) two 1/2" bolts can be used through the two 1/2" tapped holes in the bottom of the spindle to push the lower bearing cone off of the spindle. Or alternatively a soft steel punch can be used in the two 1/2" tapped holes in the bottom of the spindle to push the lower bearing cone off of the spindle.

SAW DRIVE SPINDLE

12. Remove the steel seal ring from the spindle.

INSERT 3/4" FINE THREAD OF THREADED RODS INTO DRIVE SPINDLE FLANGE

13. Remove the upper bearing cup and grease retainer from the saw housing.

14. Remove the lower bearing cup from the saw housing.

TIGHTEN NUTS (C/W) EVENLY TO PULL OUT SPINDLE

SAW 51C

15. Clean all components and thoroughly inspect for wear and damage. Inspect the drive spindle for cracks and the splines and threads for damage.

REMOVE SAW DRIVE SPINDLE

16. Clean out the inside of the saw housing and check for cracks/damage.

7. Continue to pull out the spindle while at the same time loosening the rope.

NOTE: The spindle is heavy, handle with a suitable lifting device to prevent personal injury and damage to the spindle.

8. Lower the spindle and remove it from saw housing.

9. Remove the spindle seal from the housing and discard. Normally the lower spindle seal is dislodged by interference with the lower bearing during removal of the spindle. If it is not dislodged it must be removed from the housing.

10. Once the spindle is free, remove the rope and eye bolt and remove the upper bearing cone.

2.65

Service and Maintenance

Tigercat Bunching and Felling Saws

DRIVE SPINDLE INSTALLATION (BOLT ON SPINDLE DRIVE CAP)

11. Select a quantity of the spindle bearing shims.

Use 4 of the 0.003” thick, 3 of the 0.005” thick, one each of 0.007”, 0.048” thick and 2 each of 0.010”, 0.020” thick. Place this package of shims (total 0.142” thick) on the end of the spindle and align with the bolt holes.

NOTE: Always use new bearings, seals and locknut. Refer to the illustration for correct order of parts.

1. Install the lower bearing cup into the housing, with the smaller inside diameter facing up and firmly up against the shoulder in the lower part of the saw housing.

12. Place the spindle drive cap on the end of the spindle and install the socket head cap screws through the holes in the cap and into the end of the spindle.

2. Install the upper grease retainer into the upper part of the saw housing with the lip facing up.

3. Install the upper bearing cup into the saw housing with the smaller inside diameter facing down and firmly down against the upper grease retainer in the upper part of the saw housing.

4. Heat lower seal ring in oil to approximately 137°C (280°F) and slide the seal ring onto the spindle making sure that the 45° chamfer faces down. Allow the lower seal ring to cool to 38°C (100°F) or less.

5. Apply a thin coating of grease to the lip of the grease seal.

6. Install the grease seal onto the spindle and around the seal ring with the open side of the seal facing up.

13. Pull the spindle through the housing by equally tightening the socket head cap screws and tapping the upper bearing cone down onto the spindle with a mild steel punch. While tightening the socket head cap screws, check that the lower grease seal is seating properly in the recess. Continue to tighten the socket head cap screws until the upper bearing cone is firmly up against the bearing cup.

14. Tap around the grease seal in several places using a flat faced mild steel punch to make sure that the seal is seated properly in the housing and is not rubbing against the top side of the spindle flange. On the model 5000 saw use the twelve blade mounting holes. On models 5400, 5500, 5600 and 5700 saws use the two 3/8" dia. plain holes.

7. Heat lower bearing cone in oil to approximately 137°C (280°F) and install onto spindle with wide side of cone facing down and pressed against the seal ring.

8. Pack the lower bearing cone with grease.

SAW HOUSING

9. Place the drive spindle onto a jack and proceed to raise the spindle into the saw housing. Take care not to damage the grease seal. Carefully guide the grease seal into the small recess in the saw housing.

SAW DRIVE SPINDLE FLANGE

NOTE: The outer mounting surface of the grease seal has a special coating which acts as a lubricant during assembly and then as an adhesive to help hold the seal in place after assembly.

FLAT FACED MILD STEEL PUNCH

10. Pre-heat upper bearing cone to approximately 137°C (280°F) and install onto spindle with small end of cone facing down.

SAW 111

2.66

GREASE SEAL INSTALLATION

Tigercat Bunching and Felling Saws

Service and Maintenance

15. Torque the socket head cap screws in the spindle drive cap to 108-115 N-m (80-85 lbf-ft).

2

16. Check that the spindle drive cap is seated against the upper bearing cone inner race.

There should be a zero gap between the drive cap and the bearing cone.

1

4 5

17. Set correct spindle end play. Allow all heated components to cool down prior to setting end play otherwise false readings will result. Refer to SPINDLE END PLAY ADJUSTMENT (BOLT ON CAP WITH SHIM ADJUSTMENT) in this section.

1 2 3

18. Pack the upper bearing cone with grease.

4

19. Apply grease at the grease fittings to the upper and lower saw spindle bearings until the grease begins to come out of the vent fittings.

Use a hand grease gun to prevent damage to the grease seal.

5 6 7 8

20. Install the saw blade as described in SAW BLADE INSTALLATION in this section.

9

21. For start-up after installing or servicing the spindle, bearings or adjusting endplay refer to INITIAL START-UP OF A NEW SAW HEAD in this section.

10

SAW DRIVE SPINDLE COMPONENTS

11

1. Cap screw, motor mounting cap

12

2. Motor mounting cap

13 14

3. Splined adapter (if equipped) 4. Cap screw, drive end cap 5. Drive end cap 6. Shims 7. Upper bearing cone 8. Upper bearing cup 9. Grease retainer 10. Lower bearing cup

15

11. Lower bearing cone 12. Grease seal 13. Seal ring 14. Saw drive spindle

16 17 18

SAW168

15. Bolt (2 1/4" long without flange (16) 3 1/2" with flange (16) 16. Bolting flange (used on all Tigercat ST, and DT heads) 17. Grease fitting (for lubricating splined adapter) 18. Plug 2.67

SAW DRIVE SPINDLE ASSEMBLY

Service and Maintenance

Tigercat Bunching and Felling Saws

DETAILED DRIVE SPINDLE END PLAY CHECKING PROCEDURE (BOLT ON CAP WITH SHIM ADJUSTMENT) NOTE: The following outlines the adjustment procedure for saw heads equipped with a bolt on spindle drive cap with shims to adjust the bearing end play.

End play is adjusted by adding or removing shims under the spindle drive cap. The thickness of shims will have to be altered by the amount the dial indicator reading is outside of the correct end play range.

This procedure is the most accurate way to measure end play and must be used before doing any end play adjustment. This procedure must be performed when the spindle housing, spindle, and bearings are cool to the touch 10°C to 30°C (50°F to 90°F).

SAW MOTOR RETAINING BOLTS (4)

MOTOR MOUNTING CAP RETAINING BOLTS (6)

MOTOR MOUNTING CAP

SAW165

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

SAW DRIVE HOUSING

SAW MOTOR RETAINING BOLTS

SPLINE ADAPTER (IF EQUIPPED)

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically and supported on devices strong enough to support the weight of the saw head.

3. Stop the engine and turn the master disconnect switch off.

SPINDLE DRIVE CAP

4. Ensure the saw blade has come to a complete stop.

SAW162

5. Properly install the saw blade guard using all hardware provided. Guard must be secure.

6. Remove the saw motor guard and thoroughly clean the area.

7. Disconnect all hydraulic hoses from the saw motor. Plug all hose ends and motor ports to prevent dirt from getting into the system. Label the hose ends for easy reassembly.

8. Remove the four saw motor retaining capscrews and remove the saw motor. Leave the spline adapter in the top of the spindle (if equipped).

9. Remove the six motor mounting cap retaining capscrews and remove the mounting cap. Note grease fitting location for reassembly.

NOTE: If this procedure is being performed without a blade installed, proceed to step 10. If a blade is installed go to step 16.

2.68

SPLINE ADAPTER AND DRIVE CAP

SAW HOUSING

Tigercat Bunching and Felling Saws

Service and Maintenance

BEARING END PLAY ADJUSTMENT SHIMS

SPINDLE DRIVE CAP

MOTOR MOUNTING CAP

SAW DRIVE HOUSING

SPINDLE

SAW166

SAW HEADS WITHOUT SPLINE ADAPTER SPINDLE DRIVE CAP

SPLINE ADAPTER

BEARING END PLAY ADJUSTMENT SHIMS

MOTOR MOUNTING CAP

SAW DRIVE HOUSING

SPINDLE

SAW167

SAW HEADS WITH SPLINE ADAPTER 2.69

Service and Maintenance

Tigercat Bunching and Felling Saws

10. Use the special end play adjustment tool kit available from Tigercat.

12. Position the magnetic base of a dial indicator on the machined surface of the saw drive housing. Place the indicator probe on the top of the end cap and set the indicator to '0'.

For all 5000 series heads use part number 18364A, includes tool and all hardware.

For all 5400, 5500, 5600 and 5700 series heads use part number 14613A, includes tool and all hardware.

Position the end play tool (1) over the drive housing (2) and install using 3 bolts (3).

Thread the end play bolt (4) into the end of drive spindle (5). It may be necessary to adjust the inner nut (6) and outer nut (7) to allow installation of the end play bolt (4). Install a single bolt (8) through the end play tool and into the end cap (9) to prevent the spindle from turning.

11. Turn the outer nut (7) (on the end play bolt (4) clockwise to pull the spindle up and remove all clearance from the lower saw drive bearing (10).

13. Lower spindle by turning the outer nut (7) counterclockwise, allowing the spindle to drop.

Turn the inner nut (6) counterclockwise to push the spindle down and properly seat the upper bearing (11) and ensure that all end play is measured.

NOTE: Do not tighten the nut excessively as this will cause bearing preload and an incorrect measurement. Tighten to snug only.

14. Rotate the saw spindle from side to side by hand to compensate for grease build up in the bearing rollers and take several readings around the nut.

15. The correct reading is 0.003" - 0.005". If the reading falls outside these limits, note the amount and direction of adjustment required.

Refer to END PLAY ADJUSTMENT (BOLT ON CAP WITH SHIM ADJUSTMENT) in this section.

Rotate the saw spindle from side to side by hand to compensate for grease build up in the bearing rollers.

NOTE: Do not tighten the nut excessively as this will cause bearing preload and an incorrect measurement. Tighten to snug only.

BOLT ADJUSTMENT TOOL RETAINING BOLTS (QTY 3)

DRIVE HOUSING

3

7

OUTER NUT

4

END PLAY BOLT

2

DRIVE SPINDLE

14613A

8

NOTE: Operating the saw when the endplay is outside of these limits will cause premature bearing failure and possible motor, spindle, and seal damage.

1

ADJUSTMENT TOOL

6

INNER NUT

9

END CAP

11

UPPER BEARING

10

LOWER BEARING

5

SPINDLE END PLAY ADJUSTMENT TOOL 2.70

Tigercat Bunching and Felling Saws

Service and Maintenance 20. If the saw you are working on is equipped with a saw blade lock pin it must be used for this procedure.

16. Position a lifting device such as a hydraulic jack, on a solid surface beneath the centre of the saw blade. Raise the jack to apply an upward force to the spindle to remove all clearance from the lower saw drive bearing.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

BOLT SAW BLADE LOCK PIN

STORAGE LOCATION SLOTTED INSPECTION COVER

JACK PLACEMENT ON SPINDLE 17. Position the magnetic base of a dial indicator on the machined surface of the saw drive housing. Place the indicator probe on the top of the drive cap and set the indicator to '0'.

SAW27

SAW146

SAW BLADE LOCK PIN

21. Rotate the saw blade 1/4 turn by hand and repeat steps (16) through (20) in at least four places.

22. The correct reading is 0.003" - 0.005". If the reading falls outside these limits, note the amount and direction of adjustment required.

Refer to END PLAY ADJUSTMENT (BOLT ON CAP WITH SHIM ADJUSTMENT) in this section.

SAW DRIVE HOUSING

INDICATOR PROBE ON TOP OF DRIVE CAP

NOTE: Operating the saw when the endplay is outside of these limits will cause premature bearing failure and possible motor, spindle, and seal damage.

23. If no adjustment is required: POSITION DIAL INDICATOR 18. Lower the jack allowing the spindle to drop.

Rotate the saw blade from side to side until the indicator needle settles down. The amount shown on the dial indicator will be the end play.

SAW163

19. Remove the saw blade guard.

a. Remove the end play tool. b. Install the splined adapter. c. Install motor mounting adapter. Torque bolts to 108-115 N-m (80-85 lbf-ft). d. Install drive motor. Torque bolts to 271-298 N-m (200-220 lbf-ft). e. Reconnect hoses. f.

2.71

Install saw motor cover.

Service and Maintenance

Tigercat Bunching and Felling Saws

SPINDLE END PLAY ADJUSTMENT (BOLT ON CAP WITH SHIM ADJUSTMENT)

2. Block saw blade to prevent it from turning using the locking bolt provided.

NOTE: All steps in DRIVE SPINDLE END PLAY CHECKING PROCEDURES (BOLT ON CAP WITH SHIM ADJUSTMENT) must be performed first to determine the amount and direction of the required adjustment.

LOCKING BOLT

End play is adjusted by adding or removing shims under the spindle drive cap. The thickness of shims will have to be altered by the amount the dial indicator reading is outside of the correct end play range.

SAW BLADE GUARD

SAW 63

WARNING Pay attention to all safety instructions outlined in section 1 of this manual.

Wear safety gloves at all times when handling and working around the saw blade.

Use recommended safety stands and devices when called for.

Always block wheels or tracks of carrier.

Work on solid ground.

1. Position a lifting device such as a hydraulic jack, on a solid surface beneath the centre of the saw blade. Raise the jack to apply an upward force to the spindle to remove all clearance from the lower saw drive bearing.

SAW27

BLOCK SAW BLADE

3. Remove the spline adapter (if equipped).

4. Remove the socket head capscrews from the end of the spindle and remove the spindle drive cap.

NOTE: Removing shims will reduce the amount of end play, adding shims will increase the amount of end play.

5. Add or remove the amount of shim thickness necessary to correct the end play. Use a minimum quantity 4 of the 0.003” thick shim in the final stack of shims to allow easier adjustment.

6. Reinstall the shims, spindle drive cap, and socket head cap screws. Torque socket head capscrews to 108-115 N-m (80-85 lbf.ft).

JACK PLACEMENT ON SPINDLE

2.72

Tigercat Bunching and Felling Saws

Service and Maintenance

7. Place the magnetic base of a dial indicator on the upper surface of the saw housing. Place the indicator probe on the upper surface of the spindle drive cap. Locate the probe between the mounting holes and the outside diameter of the cap. The probe must not be inline with any holes as the spindle will be rotated.

SAW DRIVE HOUSING

INDICATOR PROBE ON TOP OF DRIVE CAP

10. Push up with the jack to shift the spindle fully up and hold. Do not use excessive force as this will preload the bearings, resulting in an inaccurate setting.

11. Set the dial indicator to ‘0’.

12. Release the jack pressure and allow the spindle to fall fully down. Read the dial indicator for the amount of end play in the assembly and record the amount. The correct end play reading is 0.003” – 0.005”.

13. Rotate the spindle and repeat steps 9, 10, and 11 at least 3 times to ensure an accurate setting.

14. Install the spline adaptor (if equipped). Coat the inner and outer teeth with grease.

15. Install the motor mounting adaptor with the socket head capscrews (no Locktite). Torque capscrews to 108-115 N-m (80-85 lbf-ft).

SAW163

POSITION DIAL INDICATOR

8. Rotate the spindle one full rotation and watch the pointer on the dial indicator

16. Install the saw drive motor. Torque the 4 bolts to 271-298 N-m (200 to 220 lbf-ft).

17. Re-connect the hydraulic hoses to the motor.

9. Use a jack on the bottom surface at the centre of the spindle and push up. Then release the jack. Rotate the spindle ¼ turn and jack up then release. Repeat this procedure a few times to seat the bearings. Do not apply excessive force as this will brinell the bearing races and cause premature bearing failure.

SAW27

JACK PLACEMENT ON SPINDLE

2.73

Service and Maintenance

Tigercat Bunching and Felling Saws

BUTT PLATE AND POCKET FLOOR REPLACEMENT - MODELS 5000, 5400, 5500 AND 5600

BOLT SAW BLADE LOCK PIN

WARNING Observe all safety precautions outlined in this manual when performing this service procedure.

DESCRIPTION:

STORAGE LOCATION

Early 5000, 5500 and 5600 saw heads can be updated to the one-piece design following the details in PSB1506. Early 5400 saw heads can be updated to the one-piece design following the details in kit 18331B.

SLOTTED INSPECTION COVER

NOTE: The following instructions are based on replacing a butt plate on a Tigercat model DW5600 saw head. Although the other models have slightly different shaped butt plates this replacement procedure may be used as a guide.

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

6. If the saw you are working on is equipped with a saw blade lock pin it must be used for this part of the procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

CAUTION

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically on supports strong enough to support the weight of the saw head.

Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

3. Stop the engine and turn the master disconnect switch off.

7. Remove guards and clean all debris from the saw head to minimize the chance of fire.

4. Ensure the saw blade has come to a complete stop.

8. Measure blade to butt plate clearance, use this measurement and the butt plate position as a guide for installing the new butt plate.

5. Ensure all hydraulic pressure in the pilot lines has been released.

9. Remove the saw blade lock pin.

10. Remove skis and underside guard. Remove saw blade. Refer to SAW BLADE REMOVAL in this section.

11. Remove existing butt plate by gouging the welds on the top and bottom surfaces.

CAUTION Do not allow the bearing housing to exceed 120°C (250°F) at any time during removal or installation of butt plate.

12. Remove existing pocket floor by cutting. Follow the inside profile of the vertical side pocket plate. Completely remove the floor from the bearing housing and the bottom edge of the vertical rear pocket plate.

2.74

Tigercat Bunching and Felling Saws

INSIDE PROFILE POCKET SIDE PLATE

Service and Maintenance 1/4" FILLET WELD AT EACH END OF BRACE

BRACE, SUGGESTED 2"X4"X3/8" STEEL TUBE TACK WELD SHIMS TO BUTT PLATE AND BRACE.

EXISTING BUTTPLATE

1 1/8" - 1 3/16" AT CENTRE OF SAW

1" AT EACH END OF BRACE

NEW BUTT PLATE SAW118 EXISTING POCKET FLOOR

SAW-148

EXISTING WEAR LINER (IF EQUIPPED)

16. Position brace 25 mm (1”) above the flat new butt plate and weld to housing at ends.

BOTTOM VIEW (BLADE REMOVED)

13. Clean all surfaces of paint, rust, and weld in the areas where the new butt plate will be located.

14. Position the new buttplate and pocket floor and tack weld.

15. The pocket floor portion is not horizontal and slopes up to the rear of the saw head and fits inside the vertical pocket side plates. Trim pocket floor portion if required to clear existing welds.

NEW ONE PIECE BUTT PLATE AND POCKET FLOOR

PRELOAD BUTT PLATE

17. To compensate for stresses due to welding, shim between the brace and new butt plate to preload the butt plate by 1/8” – 3/16” at the centre of the saw as shown. More preload may be required depending on welding techniques.

18. Tack weld the shims to both the new plate and the brace.

19. Weld new plate into position on bottom and top. Weld in the sequence and direction as shown for each pass.

NOTE: Preheat the weld area to a minimum of 150°C (300°F).

NO WELD IN BEARING HOUSING AREA ON EITHER SIDE OF PLATE

TACK WELD BOTH SIDES PORTION OF EXISTING POCKET FLOOR TO BE RETAINED AS COVER FOR CHIP DEFLECTOR (IF EQUIPPED)

3/8"

NEW FLOOR PLATE FITTED INSIDE VERTICAL POCKET SIDE PLATES EXISTING WEAR LINER (IF EQUIPPED) INSPECT CONDITION AND REPLACE IF REQUIRED

SAW-177

BOTTOM VIEW WITH NEW PLATE IN POSITION 2.75

SERIES 5000 = 21" RADIUS SERIES 5500 = 23 7/8" RADIUS SERIES 5600 = 23 7/8" RADIUS

Service and Maintenance

SAW-151

Tigercat Bunching and Felling Saws

BUTTPATE INSTALLATION WELDING SEQUENCE

20. Note the location of the “NO WELD” and the transition of welding from top to bottom (weld sequence 13).

BOLT SAW BLADE LOCK PIN

21. Peen the face of each weld immediately after each pass using ¼” ball nose pneumatic peener. This will help reduce the stress build up in the weld due to cooling and minimize distortion of the butt plate.

CAUTION

STORAGE LOCATION

Do not allow the bearing housing to exceed 120°C (250°F) at any time during removal or installation of butt plate.

22. Recommended weld rod number ER8018E or wire number ER480S6.

23. Wait until the new buttplate and pocket floor and the welds are cool to the touch. Remove the brace and shims. Grind all tack welds flush.

SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

26. If the saw you are working on is equipped with a saw blade lock pin it must be used for this part of the procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

24. Check new buttplate and pocket floor for flatness (maximum 1/16” buttplate variation allowed). Straighten as required.

25. Install saw blade. Refer to SAW BLADE INSTALLATION in this section.

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

2.76

Tigercat Bunching and Felling Saws

Service and Maintenance

CHECK GAPS

BUTT PLATE 1/8" MAX.

GAP, SEE BELOW

SAW BLADE

SAW-154

SAW-153 SAW-152

NEW SAW TOOTH

CHECK GAP BETWEEN NEW BUTT PLATE AND SAW BLADE

CHECK GAP BETWEEN NEW POCKET FLOOR AND TEETH

27. Check gap between new butt plate and saw blade as follows: Series 13 = 1/8" Series 14 = 1/8" - 1/4" Series 24, 26, 74, and 75 = 1/8" - 3/16" 28. Check the clearance between the saw blade teeth and the underside of the pocket floor.

Clearance should be a minimum of 5/16”.

Correct as required.

29. Install skis and underside guard.

30. Ensure all guards are in place. Do not operate the saw head without the guards installed.

2.77

Service and Maintenance BUTT PLATE REPLACEMENT (WELDED) - MODELS 5000, 5400, 5500, 5600 AND 5700

Tigercat Bunching and Felling Saws 6. If the saw you are working on is equipped with a saw blade lock pin it must be used for this part of the procedure.

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

WARNING Observe all safety precautions outlined in this manual when performing this service procedure.

NOTE: The following instructions are based on replacing a butt plate on a Tigercat model 5700 saw head. Although the other models have slightly different shaped butt plates this replacement procedure may be used as a guide.

BOLT SAW BLADE LOCK PIN

1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

STORAGE LOCATION

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the saw head vertically on support devices strong enough to withstand the weight of the saw head.

3. Stop the engine and turn the master disconnect switch off.

4. Ensure the saw blade has come to a complete stop.

5. Ensure all hydraulic pressure in the pilot lines has been released.

SLOTTED INSPECTION COVER

SAW145

TYPICAL SAW BLADE LOCK PIN INSTALLATION

7. Remove guards and clean all debris from the saw head to minimize the chance of fire.

8. Measure blade to butt plate clearance, use this measurement and the butt plate position as a guide for installing the new butt plate.

9. Remove the saw blade lock pin.

10. Remove skis and underside guard. Remove saw blade. Refer to SAW BLADE REMOVAL in this section.

2.78

Tigercat Bunching and Felling Saws CAUTION Do not allow the bearing housing to exceed 120°C (250°F) at any time during removal or installation of butt plate.

11. Remove existing butt plate by gouging the welds on the top and bottom surfaces.

12. Clean all surfaces of paint, rust, weld, etc. in the areas where the new butt plate will be located.

Service and Maintenance 15. Position brace 25 mm (1”) above the flat new butt plate and weld to housing at ends.

16. To compensate for stresses due to welding, shim between the brace and new butt plate to preload the butt plate by 1/8” – 3/16” at the centre of the saw as shown. More preload may be required depending on welding techniques.

17. Tack weld the shims to both the new butt plate and the brace.

1/4" FILLET WELD AT EACH END OF BRACE

BRACE, SUGGESTED 2"X4"X3/8" STEEL TUBE

CREATE 3/8" X 45° CHAMFER IN TWO PLACES

TACK WELD SHIMS TO BUTT PLATE AND BRACE.

BOTTOM VIEW WITH BUTT PLATE REMOVED

CLEAN BUTT PLATE MOUNTING SURFACE

SAW116

1 1/8" - 1 3/16" AT CENTRE OF SAW NEW BUTT PLATE

PREPARE BUTT PLATE MOUNTING SURFACE

13. Create a new chamfer to lower edge of end of the butt plate mounting surface by grinding off old weld to size shown above.

SAW118

TACK WELD BOTH SIDES RADIUS 'R' 3/8"

3/8"

NO WELD IN BEARING HOUSING AREA BOTTOM VIEW WITH BUTT PLATE IN PLACE SAW117

POSITION NEW BUTT PLATE

14. Position new butt plate and tack weld on both sides at radius R as follows: Model 5000 = 20 3⁄4" Model 5400 = 22 3⁄8" Model 5500 = 23 9⁄16" Model 5600 = 23 13⁄16" Model 5700 = 23 9⁄16" Model 5702-26 = 26 15⁄16"

2.79

PRELOAD BUTT PLATE PRIOR TO WELDING

1" AT EACH END OF BRACE

Service and Maintenance

Tigercat Bunching and Felling Saws

ALL MODELS EXCEPT 5702-26

MODEL 5702-26

18. Weld new butt plate into position on bottom and top. Weld in the sequence and direction as shown for each pass.

NOTE: Preheat the weld area to a minimum of 200°C (400°F), interpass 175°C (350°F) BOTTOM VIEW

NOTE: Preheat the weld area to a minimum of 200°C (400°F), interpass 175°C (350°F).

NO WELD

NO WELD

NOTE 'C'

3/4”

3/8" FILLET WELD

3/4”

NOTE 'A'

1

1

NOTE 'B'

7”

NO WELD

7”

NOTE 'B'

DO NOT WELD BETWEEN POINTS WELDS 9 AND 10 TO HAVE CONTINUOUS PATH FLOW FROM FILLET TO BEVEL WELDS AND FROM TOP SURFACE TO BOTTOM SURFACE DO NOT START OR STOP WELD IN THIS AREA

1/2" FILLET AND BEVEL

TOP VIEW NO WELD

DO NOT START OR STOP WELD IN THIS AREA

NOTE 'C'

NO WELD

3/4”

3/4”

3 6” 2

3/8" FILLET

NO WELD

6”

1

2 1

NOTE 'B'

TOP VIEW WITH BUTT PLATE IN PLACE

SAW119

BUTT PLATE WELDING SEQUENCE (EXCEPT 5702-26)

SAW196

NOTE 'C'

3

NOTE 'B'

BUTT PLATE WELDING DETAILS MODEL 5702-26

WELD SIZE - MODEL 5702-26 Number 1 = 3/8" fillet Number 2 = 1/2" fillet (6") Number 3 = 1" transition from 1/2" fillet to 3/8" fillet WELD NOTES - MODEL 5702-26

SEE NOTE

BOTTOM VIEW WITH BUTT PLATE IN PLACE

NOTE: WELDS SEQUENCES 9 AND 10 DO NOT START OR STOP WELD IN THIS AREA MAINTAIN A CONTINUOUS FLOW WHEN MAKING TRANSITION FROM TOP SURFACE TO BOTTOM SURFACE.

SAW-D10

19. Note the location of the “NO WELD” and the transition of welding from top to bottom (weld sequences 9 and 10).

A. Torque socket head capscrews to 290-310 Nm (215-230 lbf-ft). Tack weld 3 places on each capscrew and grind flush.

B. Weld direction passes away from bearing housing on both sides of butt plate. Alternate welds, top and bottom, use back step method and peen welds after each pass to minimize distortion and residual stresses.

C. Do not start weld here. Peen and blend smooth at ends of weld.

2.80

Tigercat Bunching and Felling Saws

Service and Maintenance

20. Peen the face of each weld immediately after each pass using 1/4" ball nose pneumatic peener. This will help reduce the stress build up in the weld due to cooling and minimize distortion of the butt plate.

26. Check gap between new butt plate and saw blade as follows:

21. Recommended weld rod number ER8018E or wire number ER480S6.

Series 24, 26, 74, and 75 = 1/8" - 3/16"

Series 13 = 1/8" Series 14 = 1/8" - 1/4" Series 76 = 5/32" - 3/16"

22. Wait until the new butt plate and its welds are cool to the touch. Remove the brace and shims. Grind all tack welds flush.

23. Check new butt plate for flatness (maximum 1/16” variation allowed). Straighten as required.

24. Install saw blade. Refer to SAW BLADE INSTALLATION in this section.

25. If the saw you are working on is equipped with a saw blade lock pin it must be used for this part of the procedure.

CHECK GAP BUTT PLATE

Install the saw blade lock pin using all the hardware provided. The blade lock pin must be secure. Refer to SAW BLADE LOCK PIN in this section for instructions on the proper use of this safety device.

1/8" MAX.

GAP

SAW BLADE BOLT SAW BLADE LOCK PIN

SAW120/1

CHECK GAP BETWEEN NEW BUTT PLATE AND SAW BLADE

27. Install skis and underside guard.

28. Ensure all guards are in place. Do not operate the saw head without the guards installed.

STORAGE LOCATION

SLOTTED INSPECTION COVER

SAW146

TYPICAL SAW BLADE LOCK PIN INSTALLATION

CAUTION Wear gloves and keep fingers clear of rotating blade and pinch points. A slowly rotating blade has enough stored energy to crush and cut hands or fingers.

2.81

Service and Maintenance

Tigercat Bunching and Felling Saws

BUTT PLATE REPLACEMENT (BOLTED) - MODELS 5001 AND 5601 ON WHEEL MACHINE REPLACEMENT NOTE FOR WELD ON BUTT PLATE If the bolt on butt plate installed on earlier design saw head models DW5001, DT5001 and DW5601 is found to be unacceptable, a weld on butt plate replacement kit is available. Refer to Tigercat Product Support Bulletin numbers PSB1024 and PSB1054 for details.

4. To ensure the bracket is positioned correctly in relationship to the butt plate, place a straight edge up against the butt plate mounting surface and across to the chamfered edge of the bracket. If the bracket interferes with straight edge, the bracket must be ground away until there is no interference.

TIGHTEN THESE TWO BOLTS

BUTT PLATE INSTALLATION (BOLTED) The butt plate and the bracket are supplied loose from the factory and must be welded together during installation. This is necessary to ensure correct alignment with the saw blade after installation.

1. Remove saw blade. Refer to SAW BLADE REMOVAL in this section.

2. Remove old butt plate from saw head.

3. Attach butt plate bracket to felling head as shown in illustration. Add shims where shown to ensure that there is a 1/16" clearance between the bottom of the bracket and the mounting surface. While pushing bracket down, tighten only two of the bolts to hold the bracket securely in place.

TIGHTEN THESE TWO BOLTS

ADD 1/16" SHIM TO HOLD BRACKET OUT

STRAIGHT EDGE BUTT PLATE MOUNTING SURFACE (UNDERSIDE)

SAW 57

CHECK BRACKET ALIGNMENT

5. Install butt plate to felling head and tighten all recessed bolts.

6. To check gap between butt plate and saw blade, temporarily reinstall saw blade, or install a 3/8" spacer ring to the under side of the spindle flange and extend a straight edge from the spacer out to the butt plate. Which ever method is used, the space between the butt plate and the saw blade/straight edge should measure between 1/8" and 3/16". If a discrepancy exists, make sure that the butt plate is not slightly bent or that further grinding of the bracket is necessary.

7. After the correct gap has been established, tack weld bracket to butt plate as shown in illustration.

TACK WELD TWO PLACES

BUTT PLATE BRACKET

SAW 58

CHAMFERED EDGE OF BRACKET

TIGHTEN BOLTS

BUTT PLATE BRACKET BUTT PLATE

CHECK GAP BETWEEN BUTT PLATE AND SAW BLADE SAW 55

2.82

CHECK BUTT PLATE GAP

Tigercat Bunching and Felling Saws

Service and Maintenance 12. Weld bracket to butt plate as follows:

8. Place a square on the butt plate and up against the bracket as shown and measure the gap between the square and the bracket mounting surface at the top of the bracket, the measurement should be between 3/4" - 1" (dimension 'X').

NOTE: When weld is finished it should be a 3/8" multi pass weld. (a) Make two runs along edge (1) (back side).

Add 5/32" to the actual dimension (dimension 'X') and record this total ('X'+5/32") for use later. Also, with a piece of chalk, place a mark on the butt plate where the square was located when taking the dimension.

BUTT PLATE

BOTTOM END OF BRACKET WILL LIFT OFF BUTT PLATE DUE TO WELDING OPERATION

BRACKET

OBSERVE THIS DIMENSION AND ADD 5/32" MAKE TWO RUNS ALONG EDGE (1) SAW62 1/16" SHIM

NOTE: As this weld is being made, the gap between the far end of the bracket and the butt plate will increase.

CHALK MARK THIS LOCATION FOR LATER USE

SAW 54

WELDING INSTRUCTIONS (TOP VIEW)

On completion of the two runs of weld along edge (1), place the square on the butt plate at the chalk marked location and measure the distance between the edge of the square and the back of the bracket (dimension 'X'). There will be a significant increase over the previous measurement.

BRACKET ALIGNMENT DIMENSION

9. Remove saw blade.

10. Remove butt plate with bracket from the felling head.

11. Place butt plate assembly on a flat metal table and secure with clamps as shown, in preparation for welding.

(b) Place a large clamp on the end of the bracket and tighten the clamp until the gap is reduced to the earlier recorded dimension ('X' + 5/32").

NOTE: Clamping and clamp locations are important to prevent warping.

SECURE BUTT PLATE TO TABLE WITH CLAMPS AS SHOWN. AFTER WELDING, DO NOT REMOVE CLAMPS UNTIL BUTT PLATE HAS COMPLETELY COOLED DOWN

MOVE CLAMP TO LOCATION SHOWN AND TIGHTEN UNTIL THE EARLIER RECORDED DIMENSION (X+5/32") IS ACHIEVED

SAW 53

CLAMP BUTT PLATE TO TABLE SAW56

2.83

CLAMP BUTT PLATE BRACKET

Service and Maintenance

Tigercat Bunching and Felling Saws

(c) Continue with next run of weld on opposite side along edge (2) (front side).

18. It may be necessary to die grind the bracket holes slightly to obtain the required dimension.

(d) Complete weld on back side along edge (3) to meet edge (1) weld.

19. Once the gap at point (1) is established, tighten the bracket retaining bolts in the sequence shown.

(e) It may be necessary to make three runs to complete the weld to specifications.

STITCH WELD TWO PLACES

CLAMP BUTT PLATE

BRACKET

6

4

7

2

EDGE (2)

EDGE (3) SAW 60 EDGE (1) SAW62

WELDING INSTRUCTIONS (TOP VIEW)

13. IMPORTANT! Let butt plate cool completely before removing clamps otherwise the butt plate assembly will warp and possibly not fit the felling head housing properly.

3 1

8 5

BOLT TIGHTENING SEQUENCE

20. When all the bolts are tightened the gap at point (3) should be close to points (1) and (2).

21. Stitch weld bracket to saw housing in location shown.

22. To complete the operation weld butt plate at ramp. This will prevent debris from wedging between ramp and butt plate.

14. Install butt plate into saw housing. Check for clearance around spindle.

15. Tighten the six retaining bolts in the butt plate.

16. Install saw blade and tighten all saw blade retaining bolts. Refer to SAW BLADE INSTALLATION in this section.

WELD

17. At this stage the gap between the butt plate and the blade at point (1) should be close to being the same as at point (2) (approx. 1/8" to 3/16").

SAW67

TIGHTEN THESE SIX BOLTS FIRST

(1) (3) (2) SAW 66

CHECK BUTT PLATE GAP

2.84

WELD BUTT PLATE AT RAMP

Tigercat Bunching and Felling Saws

Service and Maintenance

SAW HOUSING WEAR LINER Replaceable wear liners are fitted to the inside of the lower saw housing. These wear liners reduce the amount of housing wear generated by debris from the rotating saw blade. Each saw head model has different designs and locations for the wear liners.

These wear liners will require periodic replacement.

Refer to the appropriate Parts Catalog pages for wear liner part numbers. The following procedure outlines the details for wear liner replacement on a 5700 model saw head. Other models will have different liners and locations, however the replacement procedure and weld details will be the same.

12. Check the clearance between the saw teeth and the wear liner. Minimum clearance should be 8 mm (5/16"). Ensure that clearance is checked around the entire circumference of the saw housing.

13. If the clearance between the saw teeth and wear liners is less than 8 mm (5/16”), mark the areas on the wear liners and remove the saw blade.

14. Grind the wear liners as required to provide the specified clearances.

15. Install saw blade and re-check clearances.

16. Install guards and skis.

WARNING Observe all safety precautions outlined in this manual when performing this service procedure.

WEAR LINER REPLACEMENT PROCEDURE 1. Park the machine on level ground.

2. Lower the saw head until it is firmly support in preparation for blade removal.

1/4 1/4

3. Stop the engine and turn the master disconnect switch off.

4. Ensure all hydraulic pressure in the pilot lines has been released.

SAW179

5. Remove skis and lower guards.

6. Remove the saw blade, refer to SAW BLADE REMOVAL in this section.

7. Remove the damaged or worn liners by grinding the existing welds.

8. Clean the housing surfaces of weld and rust where the new liners are to be located. Make repairs to the housing if necessary.

9. Fit the new liners in the housing. Check the liners for fit prior to welding, trim liners if necessary.

10. Weld the liners in place using the weld details shown in the illustration.

11. Install the saw blade, refer to SAW BLADE INSTALLATION in this section.

2.85

1/2” -8” 1/2” -8”

3/8

TYPICAL 5700 MODEL SAW HOUSING WEAR LINERS

2 PLACES

Service and Maintenance

Tigercat Bunching and Felling Saws

CYLINDER SEALS CYLINDERS WITH 1 PIECE PISTON

4

ASSEMBLY NOTES AND TORQUES 1. Note the direction of the wiper seal and install with Loctite #271. Install the spiral retaining ring ensuring that the ring is fully seated in the groove.

2. Gland bolt torque = 108-115 N-m (80-85 lbf-ft) lubricated.

3. Piston torque = 2372 N-m (1750 lbf-ft) lubricated.

4. Piston torque tool (Tigercat part number 33891B).

SAW176

PISTON TORQUE TOOL

1

3 SAW174 SAW173 SAW172

2

3.5 " CYLINDER WITH 1 PIECE PISTON

2.86

Tigercat Bunching and Felling Saws

Service and Maintenance

CYLINDER SEALS CYLINDERS WITH 2 PIECE PISTON

4

ASSEMBLY NOTES AND TORQUES 1. Note the direction of the wiper seal and install with Loctite #271. Install the spiral retaining ring ensuring that the ring is fully seated in the groove.

2. Gland bolt torque = 108-115 N-m (80-85 lbf-ft) lubricated.

3. Piston torque = 2372 N-m (1750 lbf-ft) lubricated.

4. Piston torque tool (Tigercat part number 33891B).

SAW176

PISTON TORQUE TOOL

1

3 SAW171 SAW170 SAW169

2

3.5 " CYLINDER WITH 2 PIECE PISTON

2.87

Service and Maintenance

Tigercat Bunching and Felling Saws

SAW DRIVE

PRESSURE SIDE

RETURN SIDE

DESCRIPTION The saw blade is driven by a variable displacement hydraulic motor (axial piston, bent axis) which is mounted directly above the saw blade and coupled to the saw blade through a drive spindle. Typically on Tigercat installations, a variable displacement hydraulic pump supplies oil flow to the motor via a saw control valve. The saw control valve, usually pilot operated with a built in relief, controls the flow of hydraulic oil from the pump to the motor.

A saw switch on the control panel in the cab turns the saw on or off. The 2 position switch controls the flow of electrical current to the solenoid operated saw pilot valve.

EXTERNAL ANTI-CAVITATION CHECK VALVE

207-8A

SAW MOTOR ANTI-CAVITATION CHECK VALVE

EXTERNAL ANTI-CAVITATION CHECK VALVE

The anti-cavitation check valve is installed between the pressure and return ports of the saw motor.

The anti-cavitation check valve is mounted external on a steel line on saw motors for some saw head models. Other model saw heads have a different saw motor with the anti-cavitation check valve installed in the end plate.

If the main oil flow from the pump to the motor is reduced due to other machine functions being used, the anti-cavitation check valve will allow the blade to free wheel until the pump flow increases to match the motor volume.

SAW MOTOR WITH EXTERNAL CHECK VALVE

SAW-184

If the engine stalls or the saw is shut off while the blade is rotating, the blade will continue to rotate and turn the motor. In this case the anti cavitation check valve will open and allow oil to flow from the return side to the pressure side preventing cavitation damage to the hydraulic motor. The anti-cavitation check valve will continue to allow the blade to free wheel until it comes to a complete stop. Refer to STOPPING THE SAW BLADE in this section.

IMPORTANT! To maximize saw motor life, do not shut the engine off until the saw blade has come to a complete stop and avoid turning the saw switch off when the blade is spinning at full speed. Idle engine down, allowing blade speed to reduce before turning off the saw switch.

For additional information on the saw pump and saw control valves, refer to the BASE MACHINE SERVICE MANUAL.

2.88

SCHEMATIC OF SAW MOTOR WITH EXTERNAL CHECK VALVE

Tigercat Bunching and Felling Saws 'B' PRESSURE SIDE

Service and Maintenance ANTI-CAVITATION CHECK VALVE

'A' RETURN SIDE

ANTI-CAVITATION CHECK VALVE

SAW-180

SAW MOTOR WITH INTERNAL ANTI-CAVITATION CHECK VALVE

SAW-183

ANTI-CAVITATION CHECK VALVE

SAW-185

SCHEMATIC OF SAW MOTOR WITH ANTI-CAVITATION INTERNAL CHECK VALVE

2.89

Service and Maintenance

Tigercat Bunching and Felling Saws

SAW DRIVE HYDRAULIC SETUP AND ADJUSTMENTS

DANGER Observe all safety precautions outlined in this manual when performing this service procedure.

1. START-UP PROCEDURE 2. SET BEGIN OF REGULATION 3. SAW SPEED ADJUSTMENT

WARNING

4. SAW CIRCUIT PRESSURE CHECK

Carry out this procedure with care. Make sure that there are no chips or blocks of wood remaining in the saw housing that could be thrown out by the rotating blade.

1. START-UP PROCEDURE When a pump or motor has been removed or replaced, it is necessary to prime the circuit and remove as much air as possible from the pump, motor and lines before start-up.

5. Clear area under saw of all loose dirt, stones, wood and debris.

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

6. Raise saw head 6" off the ground and position wrist in the vertical plane (if applicable).

7. Warn all persons to stay clear of the area, especially the discharge side of saw head.

8. Start engine and place the engine speed control to low idle.

2. Fill the pump case with the recommended filtered hydraulic oil through the highest case drain port.

9. Turn saw switch on.

3. Fill the motor case through the highest case drain port. As the motor is being filled, rotate the saw blade by hand to allow better entry of the oil to the lower part of the motor.

4. With the high pressure line disconnected at the pump, fill as much of the line as possible with oil through the end of the hose. Reconnect hose and check all hose connections are tight.

10. Operate saw with the engine speed control at low idle for 10 minutes. During the 10 minute idle period occasionally crack open the case drain connection on the motor to allow air to escape.

2.90

Tigercat Bunching and Felling Saws

Service and Maintenance IMPORTANT! Do not set dimension 'X' less then 9.5 mm (160cc motor) or 13 mm (170cc motor) for a 110 mm screw. Screw failure will occur and damage to the saw motor will result. Pump displacement will require adjustment if the max blade speed specification cannot be attained at that setting.

SAW MOTOR TEST PORTS AND ADJUSTMENT LOCATIONS 1. Maximum displacement adjusting screw (160cc motor only). Not used in this application. Dim. 'X' factory set to 11 mm. The 50 mm long screw is too short to have any effect on the motor setting and is only used as a plug. Do not adjust.

4. G Port = system pressure (#6 ORB) use 1/4" allen key.

2. Begin of regulation adjusting screw, use 3 mm allen key and 10 mm wrench.

3. Minimum displacement (saw speed) adjusting screw, use 6 mm allen key and 19 mm wrench.

5. M1 Port = begin of regulation pressure (#6 ORB) use 1/4" allen key.

2

1

'A'

3

'X' 4

X PORT

A PORT

B PORT

5

VIEW 'A' AQ013-4 AQ013-5

SAW MOTOR (160CC WITH EXTERNAL ANTI-CAVITATION CHECK VALVE) 2.91

Service and Maintenance

Tigercat Bunching and Felling Saws

2. SET BEGIN OF REGULATION - ALL MODELS EXCEPT 5702-26

7. Start engine and place the engine speed control to high idle.

NOTE: The following procedure is an initial setup and recommended best method for accurate setting. Always use this procedure for a new or replacement motor or if performance issues occur.

When performing a quick maintenance check of the hydraulic pressures, refer to SAW CIRCUIT PRESSURE CHECK in this section.

8. Adjust saw pump POR to 172 Bar (2500 psi) on the gauge at motor G port.

G PORT

BEGIN OF REGULATION ADJUSTING SCREW

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

MAXIMUM DISPLACEMENT ADJUSTING SCREW (NOT USED)

2. Ensure that hydraulic oil is at operating temperature.

MOTOR CASE DRAIN CONNECTION

3. Remove saw motor cover.

4. Install a 0-345 Bar (0-5000 psi) pressure gauge in the G PORT on the saw motor.

5. Install a 0-345 Bar (0-5000 psi) pressure gauge in the M1 port on the saw motor.

M1 PORT

SAW MOTOR 9. Slowly increase pump POR (G-port pressure) while reading the gauge at M1 port. When the M1 pressure equals half of G-port pressure, this is the begin of regulation set point.

207-1A

The factory begin of regulation is 220 Bar (3200 psi), so M1 gauge should read 110 Bar (1600 psi) when G port pressure reads 220 Bar (3200 psi).

If M1 gauge reads less then half of G port 220 Bar (3200 psi), adjust begin of regulation screw counterclockwise to increase the pressure.

If M1 gauge reads more then half of G port 220 Bar (3200 psi), adjust begin of regulation clockwise to reduce the pressure.

MINIMUM DISPLACEMENT ADJUSTING SCREW

Re-check pressures after tightening the begin of regulation adjusting screw jam nut to ensure the setting has not changed.

SAW-D01

SAW MOTOR M1 PORT LOCATION

NOTE: If the saw pump POR is set higher or lower, adjust the begin of regulation pressure accordingly (typically, 400 psi lower than the pump POR).

6. Block saw blade to prevent it from turning using the locking bolt provided.

LOCKING BOLT

10. Re-adjust pump POR to 248 Bar (3600 psi) on gauge at motor G port.

11. Turn the saw off.

12. Place the engine speed control to low idle.

Stop engine.

13. Remove all pressure gauges and reinstall plugs.

SAW BLADE GUARD SAW 63

14. Remove the locking bolt and saw blade guard.

BLOCK SAW BLADE 2.92

Tigercat Bunching and Felling Saws 2. SET BEGIN OF REGULATION MODEL 5702-26

Service and Maintenance 6. Block saw blade to prevent it from turning using the locking bolt provided.

NOTE: The following procedure is an initial setup and recommended best method for accurate setting. Always use this procedure for a new or replacement motor or if performance issues occur.

When performing a quick maintenance check of the hydraulic pressures, refer to SAW CIRCUIT PRESSURE CHECK in this section.

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

2. Ensure that hydraulic oil is at operating temperature.

3. Remove saw motor cover.

4. Install a 0-345 Bar (0-5000 psi) pressure gauge in the G PORT on the saw motor.

5. Install a 0-345 Bar (0-5000 psi) pressure gauge in the M1 port on the saw motor.

LOCKING BOLT

SAW BLADE GUARD SAW 63

BLOCK SAW BLADE

7. Start engine and place the engine speed control to high idle.

8. Adjust saw pump POR to 172 Bar (2500 psi) on the gauge at motor G port.

9. Slowly increase pump POR (G-port pressure) while reading the gauge at M1 port. When the M1 pressure equals half of G-port pressure, this is the begin of regulation set point.

The factory begin of regulation is 248 Bar (3600 psi), so M1 gauge should read 124 Bar (1800 psi) when G port pressure reads 248 Bar (3600 psi).

FRONT

If M1 gauge reads less then half of G port 248 Bar (3600 psi), adjust begin of regulation screw counterclockwise to increase the pressure.

M1 PORT

If M1 gauge reads more then half of G port 248 Bar (3600 psi), adjust begin of regulation clockwise to reduce the pressure.

G PORT

Re-check pressures after tightening the begin of regulation adjusting screw jam nut to ensure the setting has not changed.

NOTE: If the saw pump POR is set higher or lower, adjust the begin of regulation pressure accordingly (typically, 400 psi lower than the pump POR).

MINIMUM DISPLACEMENT ADJUSTING SCREW

10. Re-adjust pump POR to 275 Bar (4000 psi) on gauge at motor G port.

BEGIN OF REGULATION ADJUSTING SCREW

11. Turn the saw off.

12. Place the engine speed control to low idle.

Stop engine.

13. Remove all pressure gauges and reinstall plugs.

14. Remove the locking bolt and saw blade guard.

SAW-197

170CC SAW MOTOR MODEL 5702-26 2.93

Service and Maintenance

Tigercat Bunching and Felling Saws

3. SAW SPEED ADJUSTMENT

FRONT

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

2. Ensure that hydraulic oil is at operating temperature.

3. Remove saw motor cover.

MINIMUM DISPLACEMENT ADJUSTING SCREW

MINIMUM DISPLACEMENT ADJUSTING SCREW

FRONT VIEW OF MOTOR

SAW-D01

SAW SPEED ADJUSTMENT ALL EXCEPT 5702-26

4. Remove the minimum displacement adjusting screw from the motor housing and measure the length.

5. Reinstall the minimum displacement adjusting screw and locknut into the motor housing and set dimension 'X' to 9.5 mm (160cc motor) 13 mm (170cc motor) for a 110 mm screw. For a longer screw, measure the length of the screw and add the difference to the 'X' dimension.

SAW-197

IMPORTANT! Do not set dimension 'X' less then 9.5 mm (160cc motor) or 13 mm (170cc motor).

Screw failure will occur and damage to the saw motor will result. Pump displacement will require adjustment if the max blade speed specification cannot be attained at that setting.

'X'

DIM X

'X' DIMENSION

2.94

SAW SPEED ADJUSTMENT MODEL 5702-26

Tigercat Bunching and Felling Saws

Service and Maintenance

6. On earlier model felling heads, raise and tilt the felling head up to allow access to the underside of the saw blade. Affix a piece of reflective tape to the under side of the blade.

On later model felling heads, remove the clean-out access cover on top of the saw housing and affix the reflective tape to the top of the blade as shown.

REMOVE CLEAN-OUT COVER AND AFFIX REFLECTIVE TAPE TO BLADE AS SHOWN

SAW-D22

LATER MODEL SAW HEADS WITH CLEAN-OUT COVER

7. Clear area under saw of all loose dirt, stones, wood and debris.

8. Raise saw head 150mm (6") off the ground and position wrist in the vertical plane (if applicable).

9. Warn all persons to stay clear of the area, especially the discharge side of saw head.

10. Start engine and place the engine speed control in high idle.

11. Turn saw switch on.

12. Using an electronic photo tachometer in conjunction with the reflective tape, check the saw blade speed as follows: 5000 model = 1200 rpm (± 25 rpm) 5300, 5400 = 1150 (± 25 rpm) 5500, 5600, 5700 (57" blade) = 1150 rpm (± 25 rpm) 5700 (64" blade ) = 1025 rpm (± 25 rpm) 13. If blade speed requires adjustment, turn minimum displacement adjusting screw out (counterclockwise) to increase speed or in (clockwise) to decrease speed.

14. The 160cc motor also incorporates a MAX displacement adjusting screw opposite to the MIN displacement screw. The MAX displacement screw is not used. The 50 mm long adjusting screw dimension "X" is factory set to 11 mm and is only used as a plug. No adjustment is required.

2.95

Service and Maintenance

Tigercat Bunching and Felling Saws

4. SAW CIRCUIT PRESSURE CHECK

4. Raise saw head 150 mm (6") off the ground and position wrist in the vertical plane (if applicable).

Saw motor begin of regulation. 220 Bar (3200 psi) Saw pump por......................... *248 Bar (3600 psi) Saw main relief........................ *268 Bar (3900 psi) * Refer to BASE MACHINE SERVICE MANUAL for pressure setting procedures.

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

5. Warn all persons to stay clear of the area, especially the discharge side of saw head.

6. Start engine and place the engine speed control to high idle.

7. Turn saw on and observe the pressure gauge reading as the blade increases in speed.

They should be as shown in the following and corresponding graph: 1-12 seconds = 248-241 Bar (3600-3500 psi) = main relief setting

2. Install a 0-345 Bar (0-5000 psi) pressure gauge in the saw control valve gauge test port or the G port on the saw motor (to read system pressure).

* 12-14 seconds = 220-206 Bar (3200-2988 psi) = begin of regulation 14-32 seconds = 117-75 Bar (1700-1100 psi) = blade reaches full speed The blade should reach full speed after approximately 25 to 30 seconds. *

If the begin of regulation reading is between 220-206 Bar (3200-2988 psi), no adjustment is necessary.

*

If it is below 206 Bar (2988 psi) turn begin of regulation adjusting screw out slightly and re-check.

*

If it is above 220 Bar (3200 psi) turn begin of regulation adjusting screw in slightly and re-check.

'G' PORT

BEGIN OF REGULATION ADJUSTING SCREW

BEGIN OF REGULATION ADJUSTING SCREW 3. Clear area under saw of all loose dirt, stones, wood and debris.

207-1A

THIS IS A GENERIC CHART, VALUES MAY VARY SLIGHTLY.

BLADE REACHES FULL SPEED

PRESSURE (PSI)

MAIN RELIEF SETTING

BEGIN OF REGULATION

NOTE: Values may vary slightly from those shown above.

TIME (SECONDS)

SAW61

SAW BLADE ACCELERATION TIME AND PRESSURE CURVE 2.96

Tigercat Bunching and Felling Saws 8. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

9. Move the engine speed control to low idle.

Stop engine.

10. Remove pressure gauge and reinstall cap.

Service and Maintenance TROUBLESHOOTING BLADE SPEED To verify correct blade speed, check the following: 1. Begin of regulation pressure is set too low: Check begin of regulation pressure. Refer to SAW CIRCUIT PRESSURE CHECK in this section.

Readjust pressure if necessary, as described in SET BEGIN OF REGULATION in this section.

2. Saw drive check valve faulty: Verify that the check valve is not leaking.

Refer to TEST (EXTERNAL/INTERNAL) ANTI-CAVITATION AND MOTOR CONTROL CHECK VALVES in this section.

Replace check valve as required.

3. Motor stroking piston seized in maximum displacement position: May be Indicated by failure to reach full blade speed.

Repair or replace motor as required.

4. Loss of pump flow: May be Indicated by failure to reach full blade speed.

Repair or replace the pump as required.

5. Excessive motor case drain: Verify case drain volume by performing CHECK MOTOR CASE DRAIN FLOW in this section.

Repair or replace the motor as required.

2.97

Service and Maintenance

Tigercat Bunching and Felling Saws

TEST EXTERNAL ANTI-CAVITATION AND MOTOR CONTROL CHECK VALVES

4. Start engine and move the engine speed control to 1/4 speed.

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

5. Turn saw switch on.

6. Any oil flow from the bottom of the external check valve indicates that the check valve is defective, or possible incorrect installation, replace or correct installation.

7. Oil flow from the motor return port A indicates that the motor control check valve inside the motor is leaking. No oil from either of these places indicates that the check valves are operating properly.

MOTOR CONTROL CHECK VALVE LOCKING BOLT SAW BLADE GUARD

BLOCK SAW BLADE

SAW 63

RETURN PORT 'A'

2. Block saw blade to prevent it from turning using the locking bolt provided.

RETURN SIDE

MOTOR PORT 'A'

PRESSURE SIDE

CHECK VALVE PLUG HOSE END DISCONNECT AND PLUG RETURN HOSE.

207-12A

DISCONNECT STEEL TUBE FROM MOTOR

SAW-182

EXTERNAL ANTI-CAVITATION CHECK VALVE

3. Saw motors with external anti-cavitation check valve, disconnect main return hose at motor port A and plug hose as shown. Disconnect the tube from the motor as shown.

MOTOR CONTROL CHECK VALVE

8. Reconnect all hoses and tubes taking care not to allow any dirt or contaminants to enter the hydraulic lines.

9. Remove the saw blade locking bolt and guard.

Clean up any oil spills.

2.98

Tigercat Bunching and Felling Saws

Service and Maintenance

TEST INTERNAL ANTI-CAVITATION AND MOTOR CONTROL CHECK VALVES

4. Start engine and move the engine speed control to 1/4 speed.

1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

5. Turn saw switch on.

6. Oil flow from the motor return port A indicates that the anti-cavitation check valve or the motor control check valve may be leaking. No oil from either of these places indicates that the check valves are operating properly.

MOTOR CONTROL CHECK VALVE ANTI-CAVITATION CHECK VALVE

LOCKING BOLT SAW BLADE GUARD

BLOCK SAW BLADE

SAW 63

2. Block saw blade to prevent it from turning using the locking bolt provided.

'A' RETURN SIDE

RETURN PORT 'A'

ANTI-CAVITATION CHECK VALVE

SAW-180

CHECK VALVES

7. Reconnect the hose taking care not to allow any dirt or contaminants to enter the hydraulic system.

8. Remove the saw blade locking bolt and guard.

Clean up any oil spills.

SAW-180A SAW-198

INTERNAL ANTI-CAVITATION CHECK VALVE

3. Saw motors with internal anti-cavitation check valve, the pressure and return hoses are located on top of the motor. Disconnect the return hose at motor port A and plug hose.

2.99

Service and Maintenance

Tigercat Bunching and Felling Saws

CHECK MOTOR CASE DRAIN FLOW 1. Park machine on firm level ground, lower felling head to the ground, engage the parking brake or swing brake and stop engine. Block the wheels or tracks. Properly install the saw blade guard using all hardware provided.

Guard must be secure.

2. Trace the case drain hose from the motor T port to an accessible bulkhead connection on the machine, see below.

REAR VIEW OF MOTOR MOTOR CASE DRAIN CONNECTION (PORT 'T')

On Tigercat track machines, this connection is located on a bulkhead at the end of the stick boom.

Disconnect the hose at that location and plug the fitting. Make sure that the hose is long enough to place the end into a clean bucket.

If length is going to be a problem, disconnect the existing case drain hose from the motor T port and plug the hose. Temporarily connect a four foot length of hose in it's place.

DISCONNECT HOSE AND PLUG FITTING

4. Place end of case drain hose into a clean bucket.

6. Turn saw switch on.

7. Measure the amount of oil flowing from the hose into the bucket. Case drain leakage up to 2 gallons per minute is acceptable.

TO SAW MOTOR

BULKHEAD FRONT CHASSIS

CASE DRAIN HOSE BULKHEAD POSITION (Tigercat WHEEL MACHINES)

207-17A

SAW MOTOR CASE DRAIN PORT 'T' 3. Block saw blade to prevent it from turning using the locking bolt provided..

207-1A

5. Start engine and place the engine speed control to high idle.

SAW MOTOR CASE DRAIN HOSE

OPERATOR'S CAB (FRONT)

TYPICAL LOCATION ON A TIGERCAT 720/720B/726

DRAIN HOSE

8. Turn saw off and stop engine. Unblock saw blade and rotate blade 1/3 turn. Repeat steps (3) to (7) two more times after rotating the saw blade 1/3 of a turn. This will test all of the pistons in the motor's rotating group.

9. If leakage is in excess of 2 gpm, repair/replace the motor.

10. After these test have been carried out, make sure that all temporary plugs have been removed, all hoses have been reconnected and all safety guarding has been reinstalled.

2.100

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST ASSEMBLY – 30 DEGREES DESCRIPTION This wrist assembly is designed to rotate the felling head a maximum of 30°.

There are a total of two grease fittings on the wrist cylinder and four on the wrist bearing. Refer to LUBRICATION POINTS in this section.

NOTE: Left, right, clockwise and counterclockwise directions are always as viewed by the machine operator when seated in the cab facing forward.

A wrist bearing is installed with the outer race bolted to the back of the felling head and the inner race bolted to the boom adapter.

One hydraulic wrist cylinder is used to provide the wrist action. The base end of the cylinder is attached to the boom adapter and the rod end is attached to the felling head. A restrictor fitting is installed at the cylinder end of each line supplying hydraulic oil from the wrist control valve to control the flow of hydraulic oil to the wrist cylinder.

WRIST CYLINDER

FELLING HEAD FRAME WRIST BEARING

RESTRICTOR

GREASE SEAL

SPACER

ADAPTER PLATE (MAY BE PART OF FELLING HEAD FRAME)

BOOM ADAPTER

20185BIL

30° WRIST ASSEMBLY 2.101

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST HYDRAULIC CIRCUIT DESCRIPTION

SPOOL STOP

The components of this circuit are; a fixed displacement (attachment) pump, two solenoid operated pilot valves, wrist spool of the control valve and one wrist cylinder. Note that the wrist spool is located on either the wrist/clamps control valve or the main control valve depending on which carrier the saw is used.

Pressing one of the wrist trigger switches located on the joystick handles energizes either the wrist clockwise or wrist counterclockwise solenoid operated pilot valves on the pilot manifold. The pilot valves direct pilot oil from the manifold to either end of the spool in the wrist control valve.

SPOOL

LOCKNUT/SEAL PILOT END CAP

90136-5

SPOOL STOPS WRIST CONTROL VALVE

SPOOL TRAVEL STOP • 19mm WRENCH • 6mm ALLEN KEY

When the spool shifts, oil from the fixed displacement pump is directed through the orifice fitting to one end of the cylinder. This rotates the felling head to either the counterclockwise or clockwise direction.

PILOT END CAP

ADJUSTING SCREW • 5mm ALLEN KEY

LOCKNUT • 17mm WRENCH

Return oil from the cylinder is directed back through the wrist control valve where it is returned to tank.

PORT RELIEF VALVE

MAIN VALVE BODY

90744-3

2.102

SPOOL STOPS MAIN CONTROL VALVE

Tigercat Bunching and Felling Saws

SAW143

Service and Maintenance

30° WRIST (860 INSTALLATION SHOWN) 2.103

Service and Maintenance

Tigercat Bunching and Felling Saws ADJUST OIL FLOW TO 30° WRIST (CYCLE TIME)

WRIST CYCLE TIMES 30° WRIST The following instructions give typical cycle time and is based on recommended factory settings.

It should be noted that over adjusting to provide faster cycle times could increase the stress on components and the hydraulic system.

Refer to the machine Service Manual for more detailed information regarding the wrist control valve port relief pressure settings for your machine.

GAUGE TEST PORT

WRIST PORT RELIEF VALVES

WRIST SPOOL SECTION

MID INLET VALVE SECTION

NOTE: Constant loosening and tightening of the locknut (sealnut) on the adjusting screws will eventually cause the seal in the nut to break down and leak. Because of this it is best to keep the adjustment procedure brief.

DANGER Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

A stopwatch will be required for this procedure.

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

2. Hydraulic oil must be at operating temperature.

SAW SECTION MID INLET MAIN RELIEF VALVE

SAW-30

TRAVEL STOP FLOW ADJUSTING SCREW (2 PLACES)

WRIST/CLAMPS CONTROL VALVE (STANDARD VALVE 860 SHOWN )

WRIST CCW PORT RELIEF

FLOW ADJUSTING SCREW FOR PORT 'A' (TYPICAL)

CONTROL VALVE MANIFOLD

3. Start engine and place the engine speed control to high idle.

4. Raise felling head and position head so that the wrist is in the vertical plane.

5. Rotate head fully counterclockwise.

6. Rotate the head fully clockwise and use stop watch to measure the time for a full clockwise rotation (30°).

WARNING

B

B

B

B

A

A

A

A

The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

7. The cycle time should be 3 ½ seconds for a full stop to stop clockwise rotation.

WRIST CW PORT RELIEF 830-D22A

MAIN CONTROL VALVE (830 SHOWN)

2.104

Tigercat Bunching and Felling Saws

Service and Maintenance

FOR 822/830 – WRIST SPOOL SECTION ON THE MAIN CONTROL VALVE 8. To adjust cycle times use flow adjusting screws.

9. Loosen locknut and turn flow adjusting screw in to slow down and out to speed up. Tighten locknut on adjusting screw and recheck times.

10. Repeat this procedure rotating the felling head in the opposite direction to measure the speed in the counterclockwise direction.

FOR 845/845B/860/870/870B – WRIST SPOOL SECTION ON WRIST/CLAMPS VALVE The 30° wrist speed is not adjustable on these models of machines due to the type of the wrist control valve used.

2.105

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST ASSEMBLY - 110º DESCRIPTION This wrist assembly is designed to rotate the felling head in any one of six different counterclockwise and clockwise combinations to a maximum of 110°.

The wrist angle can be changed to any one of six different settings by varying the position of the cylinder rods on the boom adapter. Refer to illustrations below.

NOTE: Left, right, clockwise and counterclockwise directions are as viewed by the machine operator when seated in the cab facing forward.

2

A wrist bearing is installed with the outer race bolted to the back of the felling head and the inner race bolted to the boom adapter.

Two hydraulic wrist cylinders are used to provide the wrist action. The base end of the cylinders are attached to the base of the felling head frame and the rod ends are attached to the boom adapter.

The boom adapter incorporates six cylinder attachment point holes, three on each side of the centre line.

4

1

5 3

SAW130

6

CYLINDER ATTACHMENT POINTS

There are a total of four grease fittings on the two wrist cylinders and four for the wrist bearing. Refer to LUBRICATION POINTS in this section.

SAW131

HOLES 1 AND 6 = 20° CCW & 90° CW

SAW132

HOLES 2 AND 5 = 45° CCW & 45° CW

SAW133

HOLES 3 AND 4 = 90° CCW & 20° CW

SAW134

HOLES 1 AND 5 = 20° CCW & 45° CW

SAW136

HOLES 1 AND 4 = 20° CCW & 20° CW

SAW135

HOLES 2 AND 4 = 45° CCW & 20° CW

2.106

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST BEARING OUTER RACE

LINER HOSE GUARD

WRIST BEARING INNER RACE

BOOM ADAPTER TILT LINK ATTACHMENT PIN TO BULKHEAD ON BOOM (WRIST CONTROL VALVE)

MANIFOLD FELLING HEAD

ORIFICE (SOME MODELS )

BOOM ATTACHMENT PIN

INSTALL SHIMS TO CENTRE CYLINDER ROD BETWEEN BOOM ADAPTER LUGS.

WRIST CYLINDERS

SAW129

110° WRIST ASSEMBLY 2.107

Service and Maintenance

Tigercat Bunching and Felling Saws

HYDRAULIC CIRCUIT DESCRIPTION

SPOOL STOP

The components of this circuit are a fixed displacement (attachment) pump, two solenoid operated pilot valves, wrist spool of the control valve and two wrist cylinders. The wrist spool is located on either the wrist/clamps control valve or the main control valve depending on which carrier the saw is used.

On some models a restrictor (orifice) fitting is installed at the manifold end of each line supplying hydraulic oil from the wrist control valve to the wrist manifold to control the flow of hydraulic oil to the wrist cylinders.

SPOOL

PILOT END CAP LOCKNUT/SEAL

90136-5

Pressing one of the wrist trigger switches located on the joystick handles energizes either the wrist clockwise or wrist counterclockwise solenoid operated pilot valves on the pilot manifold. The pilot valves direct pilot oil from the manifold to either end of the spool in the wrist control valve.

SPOOL STOPS WRIST CONTROL VALVE

SPOOL TRAVEL STOP • 19mm WRENCH • 6mm ALLEN KEY ADJUSTING SCREW • 5mm ALLEN KEY

LOCKNUT • 17mm WRENCH

When the spool shifts, oil from the fixed displacement pump is directed through the orifice fitting to the wrist manifold. The wrist manifold divides the flow of oil to the base end of one cylinder and the rod end of the other cylinder or vice-versa to rotate the felling head either clockwise or counterclockwise.

PORT RELIEF VALVE

MAIN VALVE BODY

The speed of rotation of the wrist action is adjustable and is controlled by spool stops in the pilot end caps of wrist spool section of the wrist/ clamps valve or the main control valve.

90744-3

The speed from stop to stop should be set the same as the tilt forward time of 5.6 seconds, times may vary for different machines. Screw the stop in to slow down and out to speed up.

Return oil from the cylinders is directed back through the wrist control valve where it is returned to tank.

2.108

SPOOL STOPS MAIN CONTROL VALVE

PILOT END CAP

Tigercat Bunching and Felling Saws

SAW137

Service and Maintenance

110° WRIST (860 INSTALLATION SHOWN) 2.109

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST CYCLE TIMES 110° WRIST

ADJUST OIL FLOW TO 110° WRIST (CYCLE TIME)

The following instructions give typical cycle times and are based on recommended factory settings.

It should be noted that over adjusting to provide faster cycle times could increase the stress on components and the hydraulic system.

Refer to the machine service manual for more detailed information regarding the wrist control valve port relief pressure settings for your machine.

WRIST PORT RELIEF VALVES

DANGER Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

WRIST SPOOL SECTION

GAUGE TEST PORT

A stopwatch will be required for this procedure.

MID INLET VALVE SECTION

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

2. Hydraulic oil must be at operating temperature.

SAW SECTION

TRAVEL STOP FLOW ADJUSTING SCREW (2 PLACES)

MID INLET MAIN RELIEF VALVE

WRIST/CLAMPS CONTROL VALVE (STANDARD VALVE 860 SHOWN )

SAW-30

NOTE: Constant loosening and tightening of the locknut (seal nut) on the adjusting screws will eventually cause the seal in the nut to break down and leak. Because of this it is best to keep the adjusting procedure brief.

FLOW ADJUSTING SCREW FOR PORT 'A' (TYPICAL)

WRIST CCW PORT RELIEF

3. Start engine and place the engine speed control to high idle.

4. Raise felling head and position head so that the wrist is in the vertical plane.

5. Rotate head fully counterclockwise.

CONTROL VALVE MANIFOLD

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

B

B

B

B

A

A

A

A

WRIST CW PORT RELIEF

830-D22A

6. Rotate the head fully clockwise and use stop watch to measure the time for a full clockwise rotation (110°).

NOTE: When extending or retracting cylinders to record the time, stop the cylinder just before it gets to the end of it's stroke rather than let it bottom out and impose unnecessary loads on the cylinder parts and boom structures.

7. The cycle time should be as follows for a full clockwise rotation.

MAIN CONTROL VALVE (830 SHOWN)

40° rotation.............. 3 seconds stop to stop 65° rotation.............. 4 seconds stop to stop 90° rotation.............. 5 seconds stop to stop 110° rotation............ 6 seconds stop to stop

2.110

Tigercat Bunching and Felling Saws

Service and Maintenance

FOR 822/830 - WRIST SPOOL SECTION ON THE MAIN CONTROL VALVE 8. To adjust cycle times use flow adjusting screws.

NOTE: The 'A' port is connect to the wrist counterclockwise function and the 'B' port is connected to the wrist clockwise function.

9. Loosen locknut and turn flow adjusting screw in clockwise to slow down and out counterclockwise to speed up. Tighten locknut on adjusting screw and recheck times.

FOR 845/845B/860/870/870B - WRIST SPOOL SECTION ON WRIST/CLAMPS VALVE 8. To adjust cycle times use wrist spool travel stop flow adjusting screws.

9. Loosen locknut and turn flow adjusting screw in clockwise to slow down and out counterclockwise to speed up. Tighten locknut on adjusting screw and recheck times.

10. Repeat this procedure rotating the felling head in the opposite direction to measure the speed in the counterclockwise direction.

2.111

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST ASSEMBLY - 340° STANDARD TORQUE This wrist assembly is designed to rotate the felling head a full 340°, 170° each side of the vertical position.

NOTE: The stop block is only a guide and will not withstand full carrier loading. If an application requires full rotation, Tigercat recommends removing the stop block and using caution not to over rotate and damage hoses. It is the responsibility of the operator to respect the limits of rotation and prevent component damage.

NOTE: Left, right, clockwise and counterclockwise directions are always as viewed by the machine operator when seated in the cab facing forward.

Grease fittings are provided for lubrication of the wrist bearing and each pinion. Refer to LUBRICATION POINTS in this section.

A wrist bearing with teeth on the outer race is attached to the back of the felling head, the inner race is attached to the boom adapter.

Lubrication of the output shaft bearings is accomplished by using case drain oil from the hydraulic motors. For additional information refer to WRIST HYDRAULIC CIRCUIT DESCRIPTION in this section.

DESCRIPTION

Three hydraulic motors are mounted to three output shaft housings which are attached to the back of the boom adapter. The hydraulic motor shaft is connected to each output shaft by splines, the pinion end of the output shafts are meshed with the gear teeth on the outer race of the wrist bearing. Running all three motors simultaneously causes the pinions on the output shafts to rotate the wrist bearing outer race and rotate the felling head. To prevent the felling head from exceeding the 340° rotation, a stop at the top of the wrist bearing spacer will make contact with a stop block positioned at the bottom of the boom adapter.

NOTE: Depending on the carrier and head, it may be possible to hit the boom or tilt cylinder with the head tilted fully back and rotated, especially if the stop has been removed. Use caution and be aware when rotating the head.

The wrist bearing spacer/stop is sandwiched between the wrist bearing and the back of the felling head. It is located in the correct position on the felling head by two dowel pins. The spacer/ stop plate may be part of the felling head structure on some heads.

WRIST MOTORS

MANIFOLD WRIST MOTORS

WRIST MOTOR

CASE PRESSURE TEST PORT (ON OUTPUT SHAFT HOUSING)

MANIFOLD

WRIST MOTOR CASE PRESSURE TEST PORT (ON OUTPUT SHAFT HOUSING)

WRIST CLOCKWISE WRIST COUNTERCLOCKWISE

SAW-D12

SAW MOTOR RETURN CONNECTION

WRIST MOTOR DRAIN CONNECTION

WRIST ASSEMBLY 340° STANDARD TORQUE (EARLY)

SAW-D12A

2.112

WRIST CLOCKWISE

WRIST COUNTERCLOCKWISE

DRAIN AND RETURN MANIFOLD

WRIST ASSEMBLY 340° STANDARD TORQUE (LATER)

Tigercat Bunching and Felling Saws

Service and Maintenance

PLUGS

3 GREASE FITTINGS

LOCATED UNDER LEFT HAND WRIST MOTOR (SHOWN WITH COVER REMOVED FOR CLARITY

WRIST BEARING LUBRICATION FITTINGS (LATER DESIGN)

WRIST100

GREASE FITTINGS

PINION COVER GREASE RETAINER WRIST BEARING SPACER - STOP (MAY BE PART OF THE FELLING HEAD STRUCTURE)

FELLING HEAD

WRIST BEARING OUTER RACE

SAW124

WRIST BEARING LUBRICATION FITTINGS

BOOM ADAPTER

MOTOR COVER

PINION COVER GREASE RETAINER DOWEL PINS

STOP BLOCK OUTPUT SHAFT ASSEMBLY

MOTOR COVER

HYDRAULIC MOTOR

SAW-124A

WRIST ASSEMBLY - 340° STANDARD TORQUE 2.113

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST HYDRAULIC CIRCUIT DESCRIPTION EARLY 340° STANDARD TORQUE

SPOOL TRAVEL STOP • 19mm WRENCH • 6mm ALLEN KEY

The machine components of the circuit are a pump, two solenoid operated pilot valves, and the wrist spool of the control valve. The wrist spool is located on either the wrist/clamps control valve or the main control valve depending on which machine the saw is used.

PILOT END CAP

MAIN VALVE BODY

Mounted to the boom adapter are three gerotor type hydraulic motors and a distribution manifold containing two flow control valves, a crossover relief valve and two check valves.

Operating one of the wrist control switches located on the joystick handles energizes either the wrist clockwise or wrist counterclockwise solenoid operated pilot valves on the pilot manifold. The pilot valves direct oil from the manifold to either end of the wrist spool section of the control valve.

When the spool shifts, oil from the pump is directed simultaneously via the distribution manifold to either side of the three hydraulic motors to rotate the felling head either clockwise or counterclockwise.

Speed of rotation of the wrist action is adjustable and controlled by spool stops in the pilot end caps of the wrist spool section of the wrist/clamps valve or the main control valve. Additional control of rotation speed is provided by flow control valves in the distribution manifold. Some early models, not equipped with spool stops, rely entirely on the distribution manifold to control wrist rotation speed.

SPOOL

SPOOL STOP

LOCKNUT/SEAL

90136-5

PILOT END CAP

SPOOL STOPS MAIN CONTROL VALVE Two adjustable flow control valves are located on the distribution manifold, one is installed in each line between the motors and the wrist/clamps valve to control the speed at which the felling head rotates. The flow control valves allow free flow to the wrist motors and restrict flow on the output side of the motors to help prevent cavitation.

Also on the distribution manifold is an adjustable crossline relief valve which provides a cushioning effect on the high forces that occur when starting and stopping rotation of a loaded felling head. In the event that heavy loads cause the felling head to over power the wrist motors during rotation, additional make-up oil is drawn from the saw motor return line to prevent cavitation of the wrist motors. A check valve is installed in each bypass line from the saw motor return line (located on the distribution manifold) to control flow direction.

90744-3

Most of the return oil from the motors is directed back through the wrist valve where it is returned to tank. For lubrication purposes a small percentage of oil is allowed to leak into the case of the motors and into the output shaft housing, filling them with hydraulic oil to lubricate the bearings. A drain line connected to each of the three output shaft housings directs surplus oil back to tank.

SPOOL STOPS WRIST CONTROL VALVE

2.114

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST MOTORS (X3)

DISTRIBUTION MANIFOLD

CASE DRAIN FROM WRIST MOTORS SAW MOTOR RETURN OIL FROM MACHINE

WRIST CCW FROM MACHINE

SAW-157

WRIST CW FROM MACHINE

CIRCUIT DIAGRAM - 340° WRIST STANDARD TORQUE (EARLY)

FLOW CONTROL VALVE CCW ROTATION CROSSLINE RELIEF VALVE

TEST PORT

SAW RETURN CHECK VALVE

SAW RETURN CHECK VALVE

TEST PORT FLOW CONTROL VALVE CW ROTATION

TO WRIST MOTORS 'B' PORTS

WRIST CW FROM MACHINE

TO WRIST MOTORS 'A' PORTS

WRIST CCW FROM MACHINE

TEST PORT

SAW-159

SAW MOTOR RETURN OIL FROM MACHINE

DISTRIBUTION MANIFOLD - 340° WRIST (EARLY) 2.115

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST HYDRAULIC CIRCUIT DESCRIPTION LATER 340° STANDARD TORQUE The components of this circuit are the main pump, the pilot manifold and the wrist section located on the main valve. Mounted to the boom adapter are three hydraulic motors, a wrist control manifold, and a drain manifold. The wrist control manifold contains 4 check valves, 2 counter balance valves, 2 shuttle valves and an optional relief and external pilot connection for the float feature. Refer to WRIST CONTROL MANIFOLD in this section.

A wrist clockwise or counterclockwise electrical signal from a wrist button or trigger is sent to the computer control system. The computer control system sends an electrical signal out to the corresponding wrist solenoid on the pilot manifold, the corresponding solenoid shifts and allows pilot pressure to shift the spool in the wrist valve section.

The counter balance valves control the relief or holding pressure of the wrist. If a load on the head over powers the motors, the counter balance valve on the outlet side of the motors closes to limit the pressure, metering the oil out to provide controlled falling of the head. Relief oil and charge oil flows through the check valves to the work lines, keeping positive charge pressure on the work lines to prevent cavitation For lubrication purposes a small percentage of oil is allowed to leak into the case of the motors and into the output shaft housing, filling them with hydraulic oil to lubricate the bearings. A drain line connected to each of the three output shaft housings directs surplus oil back to tank.

In addition some adjustments to the wrist can be made electronically through the computer control system. Refer to WRIST ELECTRONIC ADJUSTMENT PROCEDURE in the machine specific service manual.

When there is no wrist clockwise or counterclockwise signal, the solenoid valve is in the de-energized position preventing pilot oil flow to the wrist spool ends.

When there is a signal from the wrist clockwise or counterclockwise control via the computer control system, the solenoid valve will be placed in the energized position directing pilot oil to shift the spool in the wrist valve section. This will direct oil from the main pump to the wrist motors.

Speed of rotation of the wrist action is adjustable and controlled by spool stops in the pilot end caps of the wrist spool section of the main control valve or via computer settings.

The wrist distribution manifold has 4 check valves, 2 counter balance valves, 2 shuttle valves and an optional relief and external pilot connection for the float feature.

The work lines each have a check valve blocking return flow to the carrier control valve.

The counter balance valves are configured in a cross-ported arrangement, allowing relief flow to the opposite work line and normal return flow to the return/charge line. The return/charge line is kept at positive pressure by carrier supply. Anticavitation check valves allow flow from the return/ charge line to the work lines to keep work lines at a positive pressure to prevent cavitation and drift.

The counter balance valves also incorporate check valves to allow anti-cavitation flow to the work lines.

2.116

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST MOTORS (X3)

CONTROL MANIFOLD

DRAIN AND RETURN MANIFOLD WRIST CCW FROM MACHINE

WRIST CW FROM MACHINE

WRIST RETURN AND MAKE UP OIL

SAW-158

CASE DRAIN FROM WRIST MOTORS

CIRCUIT DIAGRAM - 340° STANDARD TORQUE WRIST (LATER) 2.117

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST ASSEMBLY - 340° HIGH TORQUE This wrist assembly is designed to rotate the felling head a full 340°, 170° each side of the vertical position.

NOTE: The stop block is only a guide and will not withstand full carrier loading. If an application requires full rotation, Tigercat recommends removing the stop block and using caution not to over rotate and damage hoses. It is the responsibility of the operator to respect the limits of rotation and prevent component damage.

NOTE: Left, right, clockwise and counterclockwise directions are always as viewed by the machine operator when seated in the cab facing forward

Grease fittings are provided for lubrication of the wrist bearing and each of the three pinions. Refer to LUBRICATION POINTS in this section.

A wrist bearing with teeth on the outer race is attached to the back of the felling head, the inner race is attached to the boom adapter.

Lubrication of the output shaft bearings is accomplished by using case drain oil from the hydraulic motors. For additional information refer to 340° WRIST HYDRAULIC CIRCUIT DESCRIPTION in this section.

DESCRIPTION

Three hydraulic motors and output shaft assemblies which are attached to the back of the boom adapter. The pinion end of the output shafts are meshed with the gear teeth on the outer race of the wrist bearing. Running all three motors simultaneously causes the pinions on the output shafts to rotate the wrist bearing outer race and rotate the felling head. To prevent the felling head from exceeding the 340° rotation, a stop at the top of the wrist bearing mounting plate will make contact with a stop block positioned at the bottom of the boom adapter.

WRIST MOTOR

NOTE: Depending on the carrier and head, it may be possible to hit the boom or tilt cylinder with the head tilted fully back and rotated, especially if the stop has been removed. Use caution and be aware when rotating the head.

WRIST MOTORS

CASE PRESSURE TEST PORT

WRIST CONTROL MANIFOLD

DRAIN AND RETURN MANIFOLD SAW-156

WRIST ASSEMBLY - 340º HIGH TORQUE 2.118

Tigercat Bunching and Felling Saws

Service and Maintenance WRIST BEARING LUBRICATION FITTINGS (EARLIER DESIGN) WRIST BEARING

3 GREASE FITTINGS

GREASE FITTINGS

LOCATED UNDER LEFT HAND WRIST MOTOR (SHOWN WITH COVER REMOVED FOR CLARITY

WRIST BEARING LUBRICATION FITTINGS (LATER DESIGN)

WRIST100

PINION COVER/ GREASE RETAINER

FELLING HEAD

WRIST BEARING

2 - GREASE FITTINGS

BOOM ADAPTER

BOOM ADAPTER

MOTOR COVER

PINION COVER/ GREASE RETAINER

MOTOR COVER

STOP BLOCK

HYDRAULIC MOTOR

FC5185-101

WRIST ASSEMBLY - 340º HIGH TORQUE 2.119

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST HYDRAULIC CIRCUIT DESCRIPTION 340º HIGH TORQUE The components of this circuit are the main pump, the pilot manifold and the wrist section located on the main valve. Mounted to the boom adapter are three hydraulic motors, a wrist control manifold, and a drain manifold. The wrist control manifold contains 4 check valves, 2 counter balance valves, 2 shuttle valves and an optional relief and external pilot connection for the float feature. Refer to WRIST CONTROL MANIFOLD in this section.

A wrist clockwise or counterclockwise electrical signal from a wrist button or trigger is sent to the computer control system. The computer control system sends an electrical signal out to the corresponding wrist solenoid on the pilot manifold, the corresponding solenoid shifts and allows pilot pressure to shift the spool in the wrist valve section.

The counter balance valves control the relief or holding pressure of the wrist. If a load on the head over powers the motors, the counter balance valve on the outlet side of the motors closes to limit the pressure, metering the oil out to provide controlled falling of the head. Relief oil and charge oil flows through the check valves to the work lines, keeping positive charge pressure on the work lines to prevent cavitation For lubrication purposes a small percentage of oil is allowed to leak into the case of the motors and into the output shaft housing, filling them with hydraulic oil to lubricate the bearings. A drain line connected to each of the three output shaft housings directs surplus oil back to tank.

In addition some adjustments to the wrist can be made electronically through the computer control system. Refer to WRIST ELECTRONIC ADJUSTMENT PROCEDURE in the machine specific service manual.

When there is no wrist clockwise or counterclockwise signal, the solenoid valve is in the de-energized position preventing pilot oil flow to the wrist spool ends.

When there is a signal from the wrist clockwise or counterclockwise control via the computer control system, the solenoid valve will be placed in the energized position directing pilot oil to shift the spool in the wrist valve section. This will direct oil from the main pump to the wrist motors.

Speed of rotation of the wrist action is adjustable and controlled by spool stops in the pilot end caps of the wrist spool section of the main control valve or via computer settings.

The wrist control manifold has 4 check valves, 2 counter balance valves, 2 shuttle valves and an optional relief and external pilot connection for the float feature.

The work lines each have a check valve blocking return flow to the carrier control valve.

The counter balance valves are configured in a cross-ported arrangement, allowing relief flow to the opposite work line and normal return flow to the return/charge line. The return/charge line is kept at positive pressure by carrier supply. Anticavitation check valves allow flow from the return/ charge line to the work lines to keep work lines at a positive pressure to prevent cavitation and drift.

The counter balance valves also incorporate check valves to allow anti-cavitation flow to the work lines.

2.120

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST MOTORS (X3)

CONTROL MANIFOLD

DRAIN AND RETURN MANIFOLD WRIST CCW FROM MACHINE

WRIST CW FROM MACHINE

WRIST RETURN AND MAKE UP OIL

SAW-158

CASE DRAIN FROM WRIST MOTORS

CIRCUIT DIAGRAM - 340° HIGH TORQUE WRIST (LATER) 2.121

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST CONTROL MANIFOLD VA = Oil supply A-port from carrier VB = Oil supply B-port from carrier A1, A2, A3 = A-ports to motors B1, B2, B3 = B-ports to motors T1 = Oil return to carrier (teed to saw return at stick) CV1, CV2, CV3, CV4 = check valves CBA, CBB = counter balance valves SB, SA = shuttle valves GA, GB = gauge ports F = external pilot source to pilot open counter balance valves (optional float feature)

WRIST-018

RV = relief valve (optional float feature) F T3 CV4

CV3

GA

49352B01

WRIST MANIFOLD

B3 B2 B1

FC5185-100

WRIST MANIFOLD SCHEMATIC 2.122

WRIST CONTROL MANIFOLD

Tigercat Bunching and Felling Saws

Service and Maintenance 340° WRIST GENERAL SETUP PROCEDURE

WRIST TROUBLESHOOTING KNOWN SYMPTOMS OF SPECIFIC VALVES

Follow all servicing and safety recommendations in machine and attachment operator and service manuals.

Check valve CV2 and CV4.

•

Loss of rotate torque/speed and/or wrist will not hold in a position when stopped if the check valve is not seating.

The general setup procedure includes: A. INITIAL START-UP PROCEDURE

Check valve CV1 and CV3.

•

Loss of rotate control in a runaway condition when rotating, however the wrist will hold when stopped, if the check valve is not seating.

•

Wrist may jerk or bang when reversing rotate direction if the check valve isn’t initially seated when rotation begins.

Before beginning this procedure motor cases and output shaft housings must be filled with clean, filtered oil and bled of trapped air. Wrist bearing and pinions must be greased.

B. CHECK CASE PRESSURE Checking case pressure verifies that hose connections are correct before making wrist adjustments.

Shuttle valve SA and SB. •

Wrist falls over with poor control if the shuttle valves are missing or damaged,

•

No wrist rotation. A stuck shuttle may prevent pilot oil from shifting the counterbalance valve open preventing rotation.

C. SETTING CROSSLINE RELIEF PRESSURE (EARLY) ADJUST COUNTERBALANCE VALVE (HOLDING) PRESSURE (LATER)

Charge pressure •

Charge pressure must be maintained to maintain control. Always park head in a stable position when machine is off. Do not rely on the wrist to hold as there is no charge pressure when machine is off and saw is not running.

•

The high torque motors are a cam-piston design and require positive charge pressure on both work ports to maintain control. If charge pressure is low, or if case pressure is high, the pistons will come off the cam and the motor will free-wheel, with the pistons potentially striking the cam causing a rattling sound and piston/ cam damage.

D. ADJUST WRIST ROTATE SPEED (CYCLE TIME) FLOW CONTROL VALVES

SERVICE HINT Wrist Motor and Output Shaft Seal (High Torque) •

The pinion seal of the high torque motor is installed in a bolt-on seal retaining cap on the front of the pinion housing. Refer to WRIST ASSEMBLY - 340° – HIGH TORQUE – MOTOR AND OUTPUT SHAFT SEAL REPLACEMENT (HIGH TORQUE WRIST) in this section. Additional motor disassembly is not required unless motor damage is suspected.

2.123

Service and Maintenance

Tigercat Bunching and Felling Saws

A. INITIAL START-UP PROCEDURE When installing a wrist assembly for the first time or after performing a major service where hydraulic hoses have been disconnected, the wrist motors and output shaft housings must be filled with hydraulic oil prior to start-up.

OUTPUT SHAFT HOUSING CASE DRAIN PORT TYPICAL FOR ALL MOTORS

OUTPUT SHAFT MOTOR CASE DRAIN PLUG

WRIST MOTOR

There are two 90° fittings below the lower right hand motor. The left fitting (closest to the wrist centre) is the WRIST RETURN AND MAKEUP OIL. The right fitting (furthest from the wrist centre) is the WRIST MOTOR DRAIN CONNECTION. It is very important that the WRIST RETURN AND MAKEUP OIL and WRIST MOTOR DRAIN lines be connected correctly. If these lines are connected incorrectly failure of the wrist motors and/or wrist output shaft assemblies will occur.

To verify correct connection always check case pressure in the output shaft housings before operating the attachment under load. Refer to WRIST ASSEMBLY - 340° – 340º WRIST GENERAL SETUP PROCEDURE – CHECK CASE PRESSURE in this section.

WRIST COUNTERCLOCKWISE CONNECTION

FC5185-004

MOTOR CASE AND OUTPUT SHAFT DRAINS - STANDARD TORQUE WRIST

TYPICAL FOR ALL MOTORS

MOTOR HOUSING TOP BLEED PORT

OUTPUT SHAFT HOUSING OUTPUT SHAFT HOUSING CASE DRAIN PORT WRIST CLOCKWISE CONNECTION

MOTOR CASE DRAIN PLUG

WRIST MOTOR

MOTOR CASE AND OUTPUT SHAFT DRAINS WRIST-019 HIGH TORQUE WRIST This can be accomplished by pressurizing the hydraulic tank. Then loosen all three drain line fittings on the output shaft housings and also the case drain plugs on the three motors. Hydraulic oil under pressure from the hydraulic tank will flow backwards through the drain lines to fill the output shaft housings and motors and bleed the air from the system. When hydraulic oil appears at the fittings, tighten the fittings. Refer to BASE MACHINE SERVICE MANUAL for HYDRAULIC TANK PRESSURIZATION procedure.

SAW-D12

SAW MOTOR RETURN CONNECTION

WRIST MOTOR DRAIN CONNECTION

HOSE CONNECTIONS EARLY 340°

WRIST CLOCKWISE CONNECTION

WRIST COUNTERCLOCKWISE CONNECTION

WRIST MOTOR DRAIN CONNECTION

WRIST RETURN AND MAKEUP OIL

FLOAT EXTERNAL PILOT CONNECTION (OPTIONAL) FC5185-009

A new wrist installation must be lubricated before being used, Refer to LUBRICATION SCHEDULE in this section.

2.124

HOSE CONNECTIONS LATER 340°

Tigercat Bunching and Felling Saws

Service and Maintenance

B. CHECK CASE PRESSURE

WARNING

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks.

The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

2. Ensure hydraulic oil is at operating temperature.

6. Rotate wrist fully counterclockwise then rotate wrist fully clockwise.

7. Case pressure reading should not be higher than 1.4 bar (20 psi). If pressure is too high check wrist motor drain connection.

TEST PORT

FC5185-011

8. Position head vertically 150 mm (6 in) off the ground.

9. Case pressure reading should not be higher than 1.4 bar (20 psi). If pressure reading is 4.1 bar (60 psi) or higher check the wrist return and make up oil line for correct connection. It is likely that the wrist return and make up oil have been crossed during installation. Refer to illustration for correct hose connection information. If case pressure reading is very high it may be that the case drain line is not connected, pinched, or plugged. Recheck all connections.

STANDARD TORQUE WRIST CASE PRESSURE TEST PORT (LEFT HAND OUTPUT SHAFT HOUSING)

10. Set engine speed control to low idle and stop the engine.

11. Remove gauge.

WRIST CLOCKWISE CONNECTION

TEST PORT

FC5185-008

3. Connect a 0-35 bar (0-500 psi) gauge to the case pressure test port, located on the left hand motor output shaft housing or the left hand motor housing. The wrist will be operated during this procedure, place the gauge in a location where it can be read safely.

5. Raise head slightly off the ground and tilt forward so that head is horizontal.

WRIST MOTOR DRAIN CONNECTION

WRIST RETURN AND MAKEUP OIL

HIGH TORQUE WRIST CASE PRESSURE TEST PORT (LEFT HAND MOTOR HOUSING)

4. Start engine and place the engine speed control to high idle.

WRIST COUNTERCLOCKWISE CONNECTION

FLOAT EXTERNAL PILOT CONNECTION (OPTIONAL)

FC5185-009

HOSE CONNECTIONS

CAUTION When installing or re-installing a 340° wrist it is very important that the WRIST RETURN AND MAKEUP OIL and WRIST MOTOR DRAIN lines be connected correctly. If these lines are connected incorrectly failure of the wrist motors and/or wrist output shaft assemblies will result.

2.125

Service and Maintenance

Tigercat Bunching and Felling Saws

C. SETTING CROSSLINE RELIEF PRESSURE (EARLY)

CROSSLINE RELIEF VALVE

UPPER TEST PORT CONNECTION

FLOW CONTROL VALVE COUNTERCLOCKWISE ROTATION CHECK VALVE, SAW RETURN

822/830 - WRIST SPOOL SECTION ON THE MAIN CONTROL VALVE NOTE: For 822/830 machines the crossline relief pressure should be checked after adjusting the wrist cycle times. Refer to WRIST ASSEMBLY 340° - WRIST CYCLE TIMES in this section.

'A' PORT

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

'B' PORT LOWER TEST PORT CONNECTION

DANGER Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

FLOW CONTROL VALVE CLOCKWISE ROTATION

IMPORTANT !

During the following procedures, do not hold any function control for longer than 5 seconds.

SAW-D13

Avoid blowing oil over relief longer than 5 seconds, as excessive heating of hydraulic fluid and damage to the pump can occur.

Refer also to PRESSURE AND SPEED SETTINGS chart in SECTION 3 of carrier SERVICE MANUAL for specific machine pressure and speed specifications.

Approach the gauge reading slowly and deliberately by turning the adjusting screw in a little at a time. The pressure setting must not exceed the set value.

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

2. Ensure that the hydraulic oil is at operating temperature.

3. Adjust the screws on both flow control valves on the wrist distribution manifold fully out then in 3½ turns.

4. Connect two 0-350 bar (0-5000 psi) pressure gauges to upper and lower test ports on distribution manifold.

2.126

CHECK VALVE, SAW RETURN

WRIST DISTRIBUTION MANIFOLD

Tigercat Bunching and Felling Saws WRIST COUNTERCLOCKWISE PORT RELIEF

FLOW ADJUSTING SCREW FOR PORT 'A' (TYPICAL)

Service and Maintenance

CONTROL VALVE MANIFOLD

LOCKNUT AND ADJUSTING SCREW

CROSSLINE RELIEF VALVE CARTRIDGE

B

B

B

B

A

A

A

A

CROSSLINE RELIEF VALVE 11. Tighten locknut on adjusting screw and recheck gauge reading.

SAW-D15

12. Repeat steps 7 to 11, checking crossline setting in the opposite direction.

Pressing and holding the wrist clockwise trigger switch and reading the upper pressure gauge.

WRIST CLOCKWISE PORT RELIEF 830-D22A

MAIN CONTROL VALVE (830 SHOWN)

There should be a maximum of 14 bar (200 psi) difference side to side.

5. Turn wrist spool port relief valve adjusting screws fully in (clockwise). Do not overtighten or breakage will result.

13. Re-set the wrist spool port relief valve pressures to 207 bar (3000 psi) at 'P' test port.

Refer to SET WRIST PORT RELIEF VALVES in SECTION 19 of the machine SERVICE MANUAL for complete instructions.

6. Start the engine and place the engine speed control to low idle.

NOTE: Increase engine speed slightly if pressure reading on gauge is erratic.

LINDE MAIN VALVE MANIFOLD

Operating the wrist with the engine speed control at low idle, as required by this procedure, may result in slight chatter. This is normal.

HIGH PRESSURE LIMITING CONTROL

7. Raise head slightly off the ground and tilt forward so that head is horizontal.

L.S. GAUGE TEST PORT

8. Rotate wrist fully counterclockwise against the wrist rotate stop.

'P' GAUGE TEST PORT

9. Lower the head until the snouts make contact with the ground.

10. While pressing and holding the wrist counterclockwise trigger switch, have an assistant read the lower pressure gauge. If less than 220 bar (3200 psi), stop the engine and turn the crossline relief adjusting screw a half turn in. If greater than 220 bar (3200 psi), stop the engine and turn the crossline relief adjusting screw a half turn out. Repeat the above procedure until a gauge reading of 220 bar (3200 psi) is obtained.

LS PRESSURE ADJUSTMENT P2

MAIN VALVE MANIFOLD 14. Return felling head to vertical position and lower to the ground.

103-17A

15. Remove pressure gauges and stop engine.

2.127

Service and Maintenance

Tigercat Bunching and Felling Saws

C. SETTING CROSSLINE RELIEF PRESSURE (EARLY)

UPPER TEST PORT CONNECTION

CROSSLINE RELIEF VALVE

FLOW CONTROL VALVE COUNTERCLOCKWISE ROTATION

845/845B/860/870/870B - WRIST SPOOL SECTION ON WRIST/CLAMPS VALVE

CHECK VALVE, SAW RETURN

The port relief valves on the wrist spool section are adjusted to 207 bar (3000 psi) on both the A and B ports after setting the crossline relief pressure.

'A' PORT

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

'B' PORT

DANGER

LOWER TEST PORT CONNECTION

Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

FLOW CONTROL VALVE CLOCKWISE ROTATION

IMPORTANT !

During the following procedures, do not hold any function control for longer than 5 seconds.

SAW-D13

Avoid blowing oil over relief longer than 5 seconds, as excessive heating of hydraulic fluid and damage to the pump can occur.

WRIST DISTRIBUTION MANIFOLD GAUGE TEST PORT

WRIST PORT RELIEF VALVES

WRIST SPOOL SECTION

MID INLET VALVE SECTION

Refer also to PRESSURE AND SPEED SETTINGS chart in SECTION 3 of carrier SERVICE MANUAL for specific machine pressure and speed specifications.

Approach the gauge reading slowly and deliberately by turning the adjusting screw in a little at a time. The pressure setting must not exceed the set value.

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and the stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

CHECK VALVE, SAW RETURN

SAW SECTION MID INLET MAIN RELIEF VALVE

SAW-30

2. Ensure that the hydraulic oil is at operating temperature.

3. Connect a 0-350 bar (0-5000 psi) pressure gauge to lower test port on distribution manifold.

On earlier installations without this test port use test port on wrist/clamps control valve.

2.128

TRAVEL STOP FLOW ADJUSTING SCREW (2 PLACES)

WRIST/CLAMPS CONTROL VALVE (STANDARD VALVE 860 SHOWN )

Tigercat Bunching and Felling Saws

Service and Maintenance

4. Turn mid inlet main relief valve adjusting nut or screw on later style relief valves fully in.

14. Repeat steps 9 to 13, checking crossline setting in the opposite direction.

5. Turn wrist valve port reliefs fully in on both A and B ports.

Pressing and holding the wrist clockwise trigger switch and reading the upper pressure gauge.

6. Adjust the wrist valve travel stop screws fully out on both the A and B ports.

There should be a maximum of 14 bar (200 psi) difference side to side.

7. Adjust the screws on both flow control valves on the wrist distribution manifold fully out then in 3 turns.

15. Set wrist spool port relief valve pressures to 207 bar (3000 psi). Refer to WRIST SECTION of the machine service manual for complete instructions.

8. Start the engine and place the engine speed control to low idle.

NOTE: Increase engine speed slightly if pressure reading on pressure gauge is erratic.

9. Raise head slightly off the ground and tilt forward so that head is horizontal.

10. Using the wrist counterclockwise trigger switch, rotate wrist fully counterclockwise against the wrist rotate stop.

11. Lower the head until the snouts make contact with the ground.

12. While pressing and holding the wrist counterclockwise trigger switch, have an assistant read the lower pressure gauge. If less than 220 bar (3200 psi), stop the engine and turn the crossline relief adjusting screw a half turn in. If greater than 220 bar (3200 psi), stop the engine and turn the crossline relief adjusting screw a half turn out. Repeat the above procedure until a gauge reading of 220 bar (3200 psi) is obtained.

16. Unscrew the mid inlet main relief valve adjusting screw three full turns.

17. Re-set the mid inlet main relief valve by pressing the wrist counterclockwise trigger switch, have an assistant read the pressure gauge. If less than to 186 bar (2700 psi) or 248 bar (3600 psi) for Big Wood hydraulic option), stop the engine and turn the mid inlet relief adjusting screw a half turn in. Repeat the above procedure until the correct gauge reading is obtained.

18. Return felling head to vertical position and lower to the ground.

19. Remove pressure gauges and stop the engine.

13. Tighten locknut on adjusting screw and recheck gauge reading.

LOCKNUT AND ADJUSTING SCREW

CROSSLINE RELIEF VALVE CARTRIDGE

SAW-D15

CROSSLINE RELIEF VALVE

2.129

Service and Maintenance

Tigercat Bunching and Felling Saws

C. ADJUST COUNTERBALANCE VALVE (HOLDING) PRESSURE

NOTE: This adjustment procedure requires the wrist stop block to be installed and in good condition. If the stop block is missing or damaged the head rotation must be firmly supported against the ground or otherwise blocked from rotating.

For machines with wrist control on the attachment valve (Parker) proceed to step 1.

For machines with wrist on the main valve (Linde) refer to step 13.

With the aid of an assistant raise the boom and rotate the felling head wrist fully to one side.

While holding the joystick wrist trigger switch depressed, loosen the locknut on the POR adjustment screw on the attachment pump and turn the screw in until gauge reading (Main Pressure Relief Valve Setting) is:

ATTACHMENT VALVE (PARKER) SET FEED REDUCERS AND ATTACHMENT PUMP POR Prior to adjusting wrist manifold counterbalance valves carrier wrist section feed reducers and attachment pump POR must be temporarily adjusted. Note that temporary adjustment specifications* are different for standard torque wrists and high torque wrists for proper adjustment and wrist operation.

Standard Torque Wrist 227 bar (3300 psi) High Torque Wrist 276 bar (4000 psi) 9. Set wrist feed reducer for one direction.

With the aid of an assistant raise the boom and rotate the felling head wrist fully to one side.

While holding the joystick wrist trigger switch depressed

1. Park machine on level ground, lower the felling head to the ground, engage the swing brake and stop engine.

2. Ensure that hydraulic oil is at operating temperature.

Loosen lock nut and set feed reducer screw until the pressure gauge reading meets wrist feed reducer specifications* and tighten lock nut.

3. Connect a 0-350 bar (0-5000 psi) pressure gauge to the attachment control valve PX test port.

* Wrist feed reducer settings are:

4. Connect a 0-350 bar (0-5000 psi) pressure gauge to the test port for measuring attachment pump POR.

Standard Torque Wrist 210 bar (3050 psi) High Torque Wrist 251 bar (3650 psi) 10. Set wrist feed reducer for the other direction.

Refer to carrier manual for correct attachment pump POR gauge location.

With the aid of an assistant raise the boom and rotate the felling head wrist fully to the other side. While holding the joystick wrist trigger switch depressed

5. Start the engine and place the engine speed control to high idle.

6. Close cab door and press pilot reset switch to activate pilot system.

7. Loosen lock nuts and turn feed reducer screws on the wrist section of the attachment valve in all the way and tighten lock nuts.

8. Temporarily increase the attachment pump POR setting.

Loosen lock nut and set feed reducer screw until the pressure gauge reading meets wrist feed reducer specifications* and tighten lock nut.

11. Reset attachment pump POR setting so that gauge reading meets attachment pump POR specifications*. * Attachment pump POR settings are:

Refer to carrier manual for correct attachment pump POR gauge location.

Standard Torque Wrist 207 bar (3000 psi ) High Torque Wrist 248 bar (3600 psi ) 12. Set engine speed control to low idle, shut engine off and remove gauges. Proceed to step 21.

2.130

Tigercat Bunching and Felling Saws

Service and Maintenance

MAIN VALVE (LINDE) SET WRIST SECTION PORT RELIEFS

19. Set wrist port relief for the other direction.

With the aid of an assistant raise the boom and rotate the felling head wrist fully to the other side. While holding the joystick wrist trigger switch depressed.

Prior to adjusting wrist manifold counterbalance valves carrier wrist section port reliefs must be temporarily adjusted. Note that temporary adjustment specifications* are different for standard torque wrists and high torque wrists for proper adjustment and wrist operation.

13. Park machine on level ground, lower the felling head to the ground, engage the swing brake and stop the engine.

14. Ensure that hydraulic oil is at operating temperature.

Check gauge reading and adjust port relief valve to meet wrist section port relief specifications*. Turn adjusting screw in to increase pressure or turn screw out to decrease pressure.

20. Set engine speed control to low idle. Shut the engine off and remove gauges. Proceed to next step.

15. Connect a 0-350 bar (0-5000 psi) pressure gauge to the main control valve PX test port on the main control valve manifold. Refer to label on machine to verify the location of the wrist section on the main valve.

16. Start the engine and place the engine speed control to low idle.

17. Close cab door and press pilot reset switch to activate pilot system.

18. Set wrist port relief for one direction.

'PX' TEST PORT

NOTE: This adjustment procedure requires the wrist stop block to be installed and in good condition. If the stop block is missing or damaged the head rotation must be firmly supported against the ground or otherwise blocked from rotating.

845C-032A

MAIN VALVE (EXAMPLE) WRIST CLOCKWISE PORT RELIEF

With the aid of an assistant raise the boom and rotate the felling head wrist fully to one side.

While holding the joystick wrist trigger switch depressed.

Check gauge reading and adjust port relief valve to meet wrist section port relief specifications*. Turn adjusting screw in to increase pressure or turn screw out to decrease pressure.

B A

WRIST COUNTERCLOCKWISE PORT RELIEF 845C-042

* Wrist section port relief settings are:

MAIN VALVE (EXAMPLE)

SPOOL TRAVEL STOP • 19mm WRENCH • 6mm ALLEN KEY

Standard Torque Wrist 207 bar (3000 psi ) High Torque Wrist 248 bar (3600 psi )

ADJUSTING SCREW • 5mm ALLEN KEY LOCKNUT • 17mm WRENCH PORT RELIEF VALVE

90744-3

2.131

Service and Maintenance

Tigercat Bunching and Felling Saws

SET COUNTERBALANCE VALVE PRESSURE Prior to adjusting wrist manifold counterbalance valves, carrier settings must be set as outlined above. Note that adjustment specifications* are different for standard torque wrists and high torque wrists for proper adjustment and wrist operation.

NOTE: There are three types of counterbalance valves in use, either Sun, Eaton or Rexroth.

Adjustment is different for each type of valve. Verify which valve is being used prior to adjusting. Both valves must be the same type for proper operation.

23. Remove right motor cover and connect two 0-350 bar (0-5000 psi) pressure gauges to upper and lower test ports on the distribution manifold.

NOTE: The head will be moved during this procedure so gauges must be mounted so they can be read safely by an assistant.

24. Start the engine and place the engine speed control to low idle.

NOTE: Increase engine speed slightly if pressure reading on pressure gauge is erratic.

Do not rotate wrist at low idle with head in a vertical position. Wrist damage and loss of control may occur at low idle with the head in a vertical position. Always position head tilted forward so that the wrist is in the horizontal plane when engine speed is set to low idle.

25. Close cab door and press pilot reset switch to activate pilot system.

FC5185-014

26. Adjust counterbalance valve for clockwise wrist rotation.

SUN COUNTERBALANCE VALVE

NOTE: This adjustment procedure requires the wrist stop block to be installed and in good condition. If the stop block is missing or damaged the head rotation must be firmly supported against the ground or otherwise blocked from rotating.

With the aid of an assistant raise the boom and position head tilted forward so that the wrist is in the horizontal plane. Rotate the felling head wrist fully clockwise. While holding the joystick wrist trigger switch depressed.

FC5185-013

EATON COUNTERBALANCE VALVE

Check the gauge reading at GA and adjust counterbalance valve adjusting screw CBA. TEST PORT GB CBA

SAW195

REXROTH COUNTERBALANCE VALVE

21. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks.

22. Ensure that the hydraulic oil is at operating temperature.

CBB

WRIST-018

2.132

TEST PORT GA

WRIST CONTROL MANIFOLD

Tigercat Bunching and Felling Saws

Service and Maintenance

For Sun counterbalance valve

28. Check wrist for proper operation when both counterbalance valves have been adjusted.

Adjust clockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw counterclockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn counterclockwise.

CBA is the clockwise adjusting valve.

CBB is the counterclockwise adjusting valve.

However when troubleshooting possible problems it may be the opposite direction that needs adjustment. For example if the head falls counterclockwise the problem is likely with CBA and if the head falls clockwise the problem is likely to be CBB.

For Eaton counterbalance valve Adjust counterclockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw clockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn clockwise.

29. Set engine speed to low idle, shut engine off, remove gauges and replace covers.

For Rexroth counterbalance valve Adjust clockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw counterclockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn counterclockwise.

27. Adjust counterbalance valve for counterclockwise wrist rotation.

With the aid of an assistant raise the boom and position head tilted forward so that the wrist is in the horizontal plane. Rotate the felling head wrist fully counterclockwise. While holding the joystick wrist trigger switch depressed.

Check the gauge reading at GB and adjust counterbalance valve adjusting screw CBB. For Sun counterbalance valve Adjust clockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw counterclockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn counterclockwise.

For Eaton counterbalance valve Adjust counterclockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw clockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn clockwise.

For Rexroth counterbalance valve Adjust clockwise so it just starts to crack open and relieve (pressure on gauge starts to drop), then turn screw counterclockwise until pressure on gauge is stable (stops relieving) then turn a further 1/8 turn counterclockwise.

2.133

Service and Maintenance

Tigercat Bunching and Felling Saws

D. WRIST CYCLE TIMES 340° WRIST (FLOW CONTROL VALVES)

These valves have a hand adjustment knob. They follow the conventional adjustment standard in that turning the knob clockwise restricts flow and counterclockwise increases flow.

The following instructions give typical cycle times and are based on recommended factory settings.

It should be noted that over adjusting to provide faster cycle times could increase the stress on components and the hydraulic system.

DANGER Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

NOTE: For the 340° wrist additional flow control valves are located on the wrist distribution manifold. These flow control valves are used to fine tune the wrist rotation speed and should be used together with the main control valve adjustments described below. The flow control valves must be adjusted in to provide sufficient backpressure to prevent cavitation damage. Refer to CHECK BACK PRESSURE in EACH CYCLE TIME PROCEDURE.

A stopwatch will be required for this procedure.

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

Refer to the machine SERVICE MANUAL for more detailed information regarding the wrist control valve port relief pressure settings for your machine.

3. Connect two 0-350 bar (0-5000 psi) pressure gauges to the upper and lower test ports on the distribution manifold.

SETTING FLOW CONTROL VALVES (CYCLE TIME) EARLIER WRIST/CLAMPS CONTROL VALVE WITHOUT WRIST SPOOL TRAVEL STOPS MID INLET VALVE SECTION

2. For cartridge style flow control valves, loosen the jam nuts and turn the adjusting screws all the way in then back out 3 1/4 turns. This will provide a good starting point.

4. Ensure that hydraulic oil is at operating temperature.

WRIST SPOOL SECTION

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

GAUGE TEST PORT

5. Start engine and place the engine speed control to high idle.

6. Raise head slightly off the ground and tilt forward so that head is horizontal.

SAW SECTION MID INLET MAIN RELIEF VALVE

104-9-1

7. Rotate head fully counterclockwise.

WRIST PORT RELIEF VALVES SCREWED

8. Rotate the head fully clockwise and use stop watch to measure the time for a full clockwise rotation (340°).

WRIST/CLAMPS CONTROL VALVE (EARLIER - WRIST SPOOL WITHOUT SPOOL STOPS)

NOTE: Later units have cartridge-style flow control valves mounted in the distribution manifold under the right hand motor cover on the boom adapter.

Early units have two in-line flow control valves mounted on the carrier at the wrist/clamp valve.

9. If the time is greater than 11 seconds, increase flow by loosening locknut and backing the adjusting screw out on the lower flow control valve located on the distribution manifold (later machines) or by turning the control knob out on the flow control valve connected to the B port on the wrist/clamps control valve (early machines).

2.134

Tigercat Bunching and Felling Saws CROSSLINE RELIEF VALVE

UPPER TEST PORT CONNECTION

Service and Maintenance

FLOW CONTROL VALVE COUNTERCLOCKWISE ROTATION

LOCKNUT AND ADJUSTING SCREW

CHECK VALVE, SAW RETURN

'A' PORT

'B' PORT

FLOW CONTROL VALVE CARTRIDGE

LOWER TEST PORT CONNECTION FLOW CONTROL VALVE CLOCKWISE ROTATION

SAW-D13

CHECK VALVE, SAW RETURN

WRIST DISTRIBUTION MANIFOLD

10. If the time is less than 11 seconds, decrease flow by turning the adjusting screw on the lower flow control valve in on the distribution manifold (later machines) or by turning the control knob in on the flow control valve connected to the B port on the wrist/clamps control valve (early machines).

11. Repeat this procedure rotating the felling head in the opposite direction to measure the speed in the counterclockwise direction. Make adjustments on the upper flow control valve on the distribution manifold (later machines) or the flow control valve connected to the A port on the wrist/clamps control valve (early machines). Set time for full rotation at 11 seconds, as above.

CHECK BACK PRESSURE NOTE: It is important to check back pressure in the wrist motors each time wrist rotation speed is adjusted. Rotation speed adjustments may create pressures in the hydraulic system which result in cavitation in the wrist motors. If this is found to be the case further adjustments are required to prevent component damage and ensure efficient and long term operation.

SAW-D16

FLOW CONTROL VALVE CARTRIDGE

13. The low pressure reading (return side of motors) should be 41-103 bar (600-1500 psi).

14. Repeat for counterclockwise rotation.

15. If reading is correct move to step 19 16. If the reading is less than 41 bar (600 psi), adjust the flow control valve (distribution manifold) on the low pressure side IN to increase backpressure.

NOTE: Adjusting for slower rotation speeds will cause increased back pressure.

17. If reading is greater than 103 bar (1500 psi), adjust the flow control valve (distribution manifold) on the low pressure side out to decrease backpressure.

18. Repeat steps 7 through 17 to reset rotation speed and recheck back pressure.

19. Set the engine speed control to low idle position and remove pressure gauges from distribution manifold and stop the engine.

12. While observing the two gauges rotate the wrist fully clockwise.

2.135

Service and Maintenance

Tigercat Bunching and Felling Saws

SETTING FLOW CONTROL VALVES (CYCLE TIME)

CROSSLINE RELIEF VALVE

UPPER TEST PORT CONNECTION

FLOW CONTROL VALVE COUNTERCLOCKWISE ROTATION

822/830 - WRIST SPOOL SECTION ON THE MAIN CONTROL VALVE WRIST COUNTERCLOCKWISE PORT RELIEF

B

B

FLOW ADJUSTING SCREW FOR PORT 'A' (TYPICAL)

CHECK VALVE, SAW RETURN 'A' PORT

CONTROL VALVE MANIFOLD

B

B 'B' PORT

A

A

A

LOWER TEST PORT CONNECTION

A

FLOW CONTROL VALVE CW ROTATION

WRIST CLOCKWISE PORT RELIEF

830-D22A

SAW-D13

MAIN CONTROL VALVE (830 SHOWN)

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

A stopwatch will be required for this procedure.

2. For cartridge style flow control valves, loosen the jam nuts and turn the adjusting screws all the way out then back in 3½ turns.

3. Connect two 0-350 bar (0-5000 psi) pressure gauges to the upper and lower test ports on the distribution manifold.

WRIST DISTRIBUTION MANIFOLD

6. Raise head slightly off the ground and tilt forward so that head is horizontal.

DANGER

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

CHECK VALVE, SAW RETURN

7. Rotate head fully counterclockwise.

8. Rotate the head fully clockwise and use stop watch to measure the time for a full clockwise rotation (340°).

9. The cycle time should be approximately 12½ seconds for a full clockwise rotation.

10. To adjust cycle times use flow adjusting screws.

NOTE: The A port is connect to the wrist counterclockwise function and the B port is connected to the wrist clockwise function.

4. Ensuring that hydraulic oil is at operating temperature.

5. Start engine and place the engine speed control to high idle.

2.136

Tigercat Bunching and Felling Saws

Service and Maintenance 16. If readings are correct move to step 20.

LOCKNUT AND ADJUSTING SCREW

17. If the reading is less than 41 bar (600 psi), adjust the flow control valve (distribution manifold) on the low pressure side in to increase back pressure.

18. If reading is greater than 103 bar (1500psi), adjust the flow control valve (distribution manifold) on the low pressure side out to decrease backpressure.

19. Repeat steps 7 through 18 to reset rotation speed and recheck back pressure.

20. Set the engine speed control to low idle.

Turn off the engine and remove the pressure gauges from the distribution manifold.

FLOW CONTROL VALVE CARTRIDGE

FLOW CONTROL VALVE CARTRIDGE 11. Loosen locknut and turn flow adjusting screw in (clockwise) to slow down and out (counterclockwise) to speed up. Tighten locknut on adjusting screw and recheck times.

SAW-D16

12. Repeat this procedure rotating the felling head in the opposite direction to measure the speed in the counterclockwise direction.

NOTE: Due to spool configuration, flow screw adjustment on the A port will differ from the B port.

CHECK BACK PRESSURE NOTE: It is important to check back pressure in the wrist motors each time wrist rotation speed is adjusted. Rotation speed adjustments may create pressures in the hydraulic system which result in cavitation in the wrist motors. If this is found to be the case further adjustments are required to prevent component damage and ensure efficient and long term operation.

13. While observing the two gauges rotate the wrist fully clockwise.

14. The low pressure reading (return side of motors) should be 41-103 bar (600-1500 psi).

15. Repeat for counterclockwise rotation.

2.137

Service and Maintenance

Tigercat Bunching and Felling Saws

SETTING FLOW CONTROL VALVES (CYCLE TIME)

CROSSLINE RELIEF VALVE

845/845B/860/870/870B - WRIST SPOOL SECTION ON WRIST/CLAMPS VALVE (LATER MODELS) GAUGE TEST PORT

WRIST PORT RELIEF VALVES

MID INLET VALVE SECTION

SAW SECTION MID INLET MAIN RELIEF VALVE

SAW-30

UPPER TEST PORT CONNECTION

FLOW CONTROL VALVE COUNTERCLOCKWISE ROTATION CHECK VALVE, SAW RETURN

'A' PORT

WRIST SPOOL SECTION

'B' PORT

TRAVEL STOP FLOW ADJUSTING SCREW (2 PLACES)

LOWER TEST PORT CONNECTION

WRIST/CLAMPS CONTROL VALVE (STANDARD VALVE 860 SHOWN )

DANGER Observe all safety precautions outlined in this manual and the base machine service manual when performing this procedure.

A stopwatch will be required for this procedure.

1. Park machine on firm level ground, lower felling head to the ground, engage swing brake and stop engine. Block tracks. Properly install the saw blade guard using all hardware provided. Guard must be secure.

2. For cartridge style flow control valves, loosen the jam nuts and turn the adjusting screws all the way out then back in 3½ turns.

3. Connect two 0-350 bar (0-5000 psi) pressure gauges to the upper and lower test ports on the distribution manifold.

4. Ensuring that hydraulic oil is at operating temperature.

FLOW CONTROL VALVE CW ROTATION

CHECK VALVE, SAW RETURN

WRIST DISTRIBUTION MANIFOLD 6. Raise head slightly off the ground and tilt forward so that head is horizontal.

SAW-D13

7. Rotate head fully counterclockwise.

8. Rotate the head fully clockwise and use stop watch to measure the time for a full clockwise rotation (340°).

9. The cycle time should be approximately 12½ seconds for a full clockwise rotation.

10. To adjust cycle times use wrist spool travel stop flow adjusting screws.

11. Loosen locknut and turn flow adjusting screw in (clockwise) to slow down and out (counterclockwise) to speed up cycle time.

Tighten locknut on adjusting screw and recheck times.

5. Start engine and place the engine control to high idle.

WARNING The felling head will be rotated side to side during this procedure. Operator must ensure that no one is near the felling head during this procedure.

The swing brake should be applied at all times during this procedure.

2.138

Tigercat Bunching and Felling Saws

Service and Maintenance 18. If reading is greater than 103 bar (1500psi), adjust the flow control valve (distribution manifold) on the low pressure side out to decrease back pressure.

LOCKNUT AND ADJUSTING SCREW

19. Repeat steps 7 through 18 to reset rotation speed and recheck back pressure.

20. Set the engine speed control to low idle.

Turn off the engine and remove the pressure gauges from the distribution manifold.

FLOW CONTROL VALVE CARTRIDGE

SAW-D16

FLOW CONTROL VALVE CARTRIDGE

12. Repeat this procedure rotating the felling head in the opposite direction to measure the speed in the counterclockwise direction.

NOTE: Due to spool configuration, flow screw adjustment on the A port will differ from the B port.

CHECK BACK PRESSURE NOTE: It is important to check back pressure in the wrist motors each time wrist rotation speed is adjusted. Rotation speed adjustments may create pressures in the hydraulic system which result in cavitation in the wrist motors. If this is found to be the case further adjustments are required to prevent component damage and ensure efficient and long term operation.

13. While observing the two gauges rotate the wrist fully clockwise.

14. The low pressure reading (return side of motors) should be 41-103 bar (600-1500 psi).

15. Repeat for counterclockwise rotation.

16. If readings are correct move to step 20.

17. If the reading is less than 41 bar (600 psi), adjust the flow control valve (distribution manifold) on the low pressure side in to increase back pressure.

2.139

Service and Maintenance

Tigercat Bunching and Felling Saws

OUTPUT SHAFT DISASSEMBLY/ASSEMBLY (STANDARD TORQUE WRIST) 1. Turn the saw off and allow saw blade to come to a complete stop. Do not exit the cab or approach the felling head until the blade is stopped.

2. Park the machine on firm level ground. Block the wheels or tracks. Engage the parking brake or swing brake. Position the felling head tilted forward 90° and resting on ground.

MOTOR CASE DRAIN PLUG

NOTE: Open clamp arms sufficiently to allow felling head to be resting in a horizontal position.

3. Stop the engine and turn the master disconnect switch off.

MOTOR SECURING BOLTS (4)

OUTPUT SHAFT DRAIN CONNECTION

4. Ensure the saw blade has come to a complete stop.

5. Remove protective cover to access wrist motor.

OUTPUT SHAFT HOUSING SECURING BOLTS (8)

6. Before disassembly operation, remove any accumulation of dirt or debris from surrounding area.

SAW-D18

7. Disconnect all hydraulic tubing from the affected wrist motor and the output shaft housing. Plug all ports and cap tubing to prevent entry of dirt.

8. Remove the case drain plug from the wrist motor and drain any hydraulic oil remaining in the motor, replace plug.

9. Remove the (4) bolts securing the wrist motor to the output shaft housing and remove the wrist motor from output shaft housing. Cover exposed shaft end of motor.

NOTE: The motor shaft has no support bearings and will be loose (side to side, in and out). A loose shaft is not and indication of motor failure.

10. Remove the (8) bolts securing the output shaft housing to the boom adapter and remove the output shaft from the boom adapter.

11. Before disassembly of output shaft, remove all grease and dirt accumulation from the outside of the assembly.

2.140

MOTOR AND OUTPUT SHAFT

Tigercat Bunching and Felling Saws

Service and Maintenance

HOUSING SEAL - O-RING

SEAL RING - TEFLON

SHIM(S) BETWEEN SHOULDER RING AND INNER RACE

OUTPUT SHAFT

*SHOULDER RING (SEE NOTE) *NOTE: EARLIER MACHINES DID NOT HAVE SHOULDER RING FACTORY INSTALLED.

SEAL COLLAR WIPER

MOTOR SHAFT ‘V’ CUP SEAL RING LOWER BEARING MOTOR MOUNT O-RING

UPPER BEARING

SPACER (REQUIRED ON EARLIER MODELS)

RETAINING RING

SAW126

OUTPUT SHAFT ASSEMBLY

12. Remove shoulder ring, retaining ring and shims from output shaft.

21. Heat sealing collar and lower bearing inner race in a bearing oven to 120°C (250°F), do not place on floor of oven. Maximum 1.5 hours.

NOTE: Some earlier machines did not have a shoulder ring factory installed.

13. Rest housing on blocks in upright position, pinion down and press out shaft complete with seal collar and inner race of lower bearing.

14. Remove old oil seal (teflon ring and O-ring) from groove of housing and discard. Never reuse any part of old seal.

22. Install seal collar and lower bearing inner race onto shaft. Press both on simultaneously by supporting inner race (using a spacer Tigercat part number 19048A) and pressing down on pinion end of shaft.

15. Remove wiper from collar and discard. If only replacing the seal go to step 23 16. Remove seal collar and lower bearing inner race from shaft.

17. Press out both upper and lower bearings from housing.

18. Thoroughly clean housing and shaft.

ASSEMBLY 19. Lightly oil bore of housing and press a new upper bearing into the housing. Use special tool Tigercat part number 19047A. 20. Lightly oil bore of housing and press a new lower bearing into the housing. Use special tool Tigercat part number 19047A. 2.141

Service and Maintenance

Tigercat Bunching and Felling Saws

HOUSING SEAL - O-RING

SEAL RING - TEFLON

SHIM(S) BETWEEN SHOULDER RING AND INNER RACE

OUTPUT SHAFT

*SHOULDER RING (SEE NOTE) *NOTE: EARLIER MACHINES DID NOT HAVE SHOULDER RING FACTORY INSTALLED.

SEAL COLLAR WIPER

MOTOR SHAFT ‘V’ CUP SEAL RING LOWER BEARING MOTOR MOUNT O-RING

UPPER BEARING

SPACER (REQUIRED ON EARLIER MODELS)

RETAINING RING

SAW126

OUTPUT SHAFT ASSEMBLY

23. Clean seal groove in housing and insert new O-ring part of seal into groove. Keep inside of housing clean and free from contaminants.

26. Position housing with lower bearing facing up. Support inner race of upper bearing with special tool Tigercat part number 19049A.

24. Insert new teflon part of seal into groove in housing on top of O-ring. Collapse ring as shown below, taking care not to crease the seal ring. Place into groove as shown. Coat the inside surface of the seal with hydraulic oil and use seal seating tool Tigercat part number 19057A or fingers to smooth out the inside diameter of the seal ring after installation.

27. Oil teflon seal ring surface, wiper and bearings and install output shaft into housing, lightly tap into position so that sealing collar slips into the teflon seal ring and the wiper slips into the housing.

TAKE CARE NOT TO CREASE THE SEAL RING WHILE FORMING

TEFLON SEAL RING INSTALLATION 25. Check wiper groove in seal collar to ensure it is clean and dry. Insert a new wiper into the groove with lip facing out, see illustration.

SAW127

2.142

NOTE: To prevent extrusion of the wiper, carefully push it in around the edge of the collar once it starts to engage the housing.

Use only enough pressure to seat the bearings. Check to ensure the shaft is installed straight, collar clears housing and wiper is evenly positioned.

Tigercat Bunching and Felling Saws

Service and Maintenance SEAL - O-RING

HOUSING

SEAL RING - TEFLON

SHIM(S) BETWEEN SHOULDER RING AND INNER RACE

OUTPUT SHAFT

*SHOULDER RING (SEE NOTE) *NOTE: EARLIER MACHINES DID NOT HAVE SHOULDER RING FACTORY INSTALLED.

SEAL COLLAR WIPER

MOTOR SHAFT ‘V’ CUP SEAL RING LOWER BEARING MOTOR MOUNT O-RING

UPPER BEARING

SPACER (REQUIRED ON EARLIER MODELS)

RETAINING RING

SAW126

OUTPUT SHAFT ASSEMBLY

28. On later machines install shoulder ring and retaining ring on shaft (square edge of shoulder ring next to snap ring) and check shaft end play, use feeler gauge between upper bearing inner race and shoulder ring, maximum allowable end play is 0.006”-0.010".

Add or remove shims between shoulder ring and inner race to achieve correct end play.

Using a soft-faced hammer gently tap the end of the shaft until the shoulder ring is snug to the snap ring.

30. Clean mating surfaces and install output shaft assembly onto the boom adapter. Align gear teeth of pinion shaft with the gear teeth on the wrist bearing. Use special tool Tigercat part number 19056A to rotate housing to align mounting holes. Secure in place with (8) retaining bolts, torque bolts.

NOTE: Ensure that the seal collar does not protrude through the outer face of the boom adapter and interfere with the wrist bearing or grease retainers. Earlier housings may require shims between the output shaft housing and the inner face of the boom adapter to ensure that the seal collar is recessed 1/16” - 1/8” in from the outer face of the boom adapter.

On earlier machines without shoulder ring, install retaining ring on shaft and check shaft end play, use feeler gauge between upper bearing inner race and retaining ring, maximum allowable end play is 0.006”-0.010".

Add or remove shims between retaining ring and inner race to achieve correct end play.

OUTER FACE OF BOOM ADAPTER

OUTPUT SHAFT HOUSING

WRIST BEARING

29. Turn housing over. Check seal collar for run-out. Place the base of a dial indicator on the housing and zero the dial on the seal collar, rotate the shaft one revolution (use tool Tigercat part number 19122A), maximum allowable run-out is 0.002”. Repeat in different locations of the seal collar.

SEAL COLLAR

SAW-D17

2.143

OUTER FACE OF BOOM ADAPTER

Service and Maintenance

Tigercat Bunching and Felling Saws

31. Install drain tube/fittings onto output shaft housing and fill housing with clean, filtered hydraulic oil.

32. Install ‘V’ cup seal on the wrist motor shaft as shown, and position in recess. Install a new O-ring on the wrist motor housing.

ENSURE SEAL RING IS INSTALLED AS SHOWN

MOTOR CASE DRAIN PLUG

MOTOR SECURING BOLTS (4)

SAW-D19

OUTPUT SHAFT DRAIN CONNECTION

‘V’ CUP SEAL ON MOTOR SHAFT

OUTPUT SHAFT HOUSING SECURING BOLTS (8)

POSITION SEAL RING IN RECESS

SAW-D18 INSTALL NEW O-RING ON MOTOR HOUSING

‘V’ CUP SEAL ON MOTOR SHAFT SAW-D20 33. Install the wrist motor on the output shaft housing. Secure in place with (4) retaining bolts, torque bolts.

NOTE: The wrist motor should easily fit onto the output shaft housing. Any interference, gap or misalignment will result in failure of the output shaft and/or the motor. Therefore fit problems must be corrected immediately.

34. Re-connect all hydraulic tubing and replace protective cover.

35. Fill housing and motors with oil. See INITIAL START-UP PROCEDURE in this section.

2.144

MOTOR AND OUTPUT SHAFT

Tigercat Bunching and Felling Saws

Service and Maintenance

MOTOR AND OUTPUT SHAFT SEAL REPLACEMENT (HIGH TORQUE WRIST)

10. Remove the (8) socket head bolts securing the motor and output shaft assembly to the boom adapter. Do not remove the 12 bolts securing the motor to the pinion housing. Remove the motor and the output shaft assembly using a suitable lifting device.

1. Park machine on firm level ground, lower felling head to the ground. Position the felling head tilted forward 90° and resting on ground.

NOTE: Open clamp arms fully to allow felling head to be resting in a horizontal position.

Block head to ensure it is fully supported.

Engage the swing brake and block tracks.

11. Place motor and the output shaft assembly on blocks in upright position with the pinion facing up.

2. Relieve the hydraulic pressure in the lines connected to the saw head, wrist boom adaptor and tank pressure. For procedure to relieve pressure, refer to machine Operator’s Manual.

JACKING SCREW LOCATION

SEAL HOUSING BOLTS (10)

3. Stop the machine engine and turn the master disconnect switch off.

4. Remove protective cover to access wrist motor(s).

5. Before disassembly operation, remove any accumulation of dirt or debris from surrounding area.

MOTOR AND OUTPUT SHAFT ASSEMBLY SECURING BOLTS (8) WRIST MOTOR

OUTPUT SHAFT DRAIN CONNECTION

MOTOR CASE DRAIN PLUG

LIFTING BRACKET

TYPICAL FOR ALL THREE MOTORS

FC5185-010

MOTOR AND OUTPUT SHAFT HIGH TORQUE WRIST

6. Mark all saw head and boom adaptor hoses, tubes and fittings to identify connections.

JACKING SCREW LOCATION

51733-001

MOTOR AND OUTPUT SHAFT HIGH TORQUE WRIST

12. Remove the (10) bolts from the seal housing, take (2) bolts and install them in the provided jacking screw locations on the seal housing.

Use jacking screws to evenly remove the seal housing.

13. Remove old oil seal (teflon ring and o-ring) from groove of housing and discard. Never reuse any part of old seal.

14. Clean seal housing.

15. Carefully clean any dirt, debris, and grease out of pinion housing, do not damage the sealing collar.

7. Disconnect the wrist motor hoses from the connections on the wrist motors. Cap or plug all open hydraulic ports and hose ends to prevent entry of dirt. Collect all hydraulic oil to prevent spills. Dispose of all fluids properly.

8. Remove the case drain plug from the wrist motor and drain any hydraulic oil remaining in the motor, replace plug.

9. Install an appropriate lifting strap in the lifting bracket on the motor.

MUST BE A SMOOTH, POLISHED SURFACE WITH NO DAMAGE WRIST-016

PROPER WEAR PATTERN

16. Inspect all visible components for any sign of damage and check the sealing collar for an even wear pattern.

2.145

Service and Maintenance

Tigercat Bunching and Felling Saws

SEAL HOUSING SEAL (GREEN O-RING AND WHITE SEAL RING)

3

9

8

6

O-RING

BOLTS (10)

2 1 5

7 4

51733-001

MOTOR AND OUTPUT SHAFT ASSEMBLY (HIGH TORQUE WRIST) 51733B 17. Clean seal groove in seal housing and insert new green o-ring part of the seal into the groove. Keep inside of housing clean and free from contaminants.

18. Insert new white teflon part of seal into groove in housing on top of o-ring. Collapse ring as shown, taking care not to crease the seal ring.

Place into groove as shown. Coat the inside surface of the seal with clean, filtered hydraulic oil and use fingers to smooth out the inside diameter of the seal ring after installation.

BOLT TIGHTENING PATTERN

22. Tighten bolts using hand tools in a cross pattern as shown. Torque bolts in a 2-stage process using a cross pattern as shown.

Begin with torque wrench set to 8 N-m (6 lbfft). Re-set torque wrench to 15.6 N-m (11.5 lbf-ft) and repeat cross-pattern torquing.

23. Clean mating surfaces and install motor and output shaft assembly onto the boom adapter.

Align gear teeth of pinion shaft with the gear teeth on the wrist bearing. Use special tool Tigercat part number 19056A to rotate housing to align mounting holes. Secure in place with (8) retaining bolts, torque bolts.

24. Re-connect the wrist motor hoses.

TAKE CARE NOT TO CREASE THE SEAL RING WHILE FORMING

SAW127

10

25. Before moving the saw head fill housing and motors with oil, purge all air from the 3 wrist motors and 3 output shaft housings by cracking the case port connections and pressurizing the hydraulic tank.

Refer to 340° WRIST GENERAL SETUP PROCEDURE – INITIAL START-UP PROCEDURE and CHECK CASE PRESSURE in this section.

TEFLON SEAL RING INSTALLATION

19. Using clean, filtered hydraulic oil, lightly oil and install face seal o-ring. Also lightly oil the seal contact surface of the pinion shaft sealing collar.

20. Install seal housing on pinion housing, keeping housing square to prevent seal damage.

NOTE: Motor and output shaft failure will occur if air is not purged.

26. Replace protective covers.

21. Apply anti-seize to the (10) seal housing bolts.

Install bolts, starting with 2 opposite sides and start threads by hand. Before tightening bolts rotate the shaft one revolution (use tool Tigercat part number 19122A) to set the seal.

2.146

Tigercat Bunching and Felling Saws

Service and Maintenance

MOTOR AND OUTPUT SHAFT CONVERTING RIGHT HAND AND LEFT HAND ASSEMBLIES (HIGH TORQUE WRIST) High torque wrist motor and output shaft assemblies are either left hand (one installed on the left side of the wrist) or right hand (two installed on the right side of the wrist). Both left hand and right hand motor and output shaft assemblies have identical parts, the only difference between a left hand and right hand assembly is the motor orientation. Therefore it is possible to convert a left hand or right hand motor and output shaft assembly to the opposite hand assembly as required.

1. Place the motor and output shaft assembly on blocks in upright position with the pinion facing up. Use an appropriate lifting strap in the lifting bracket on the motor and a suitable lifting device to position the assembly.

2. Before disassembly operation, remove any accumulation of dirt or debris if required.

LEFT HAND ASSEMBLY

RIGHT HAND ASSEMBLY

WRIST-101

Right hand assembly has motor ports away from large curve on housing.

Left hand assembly has motor ports towards large curve on housing.

6. Apply Loctite 518 (or equivalent anaerobic sealant) to counter bore faces of motor mounting bolt holes.

5

3. Remove the 12 bolts securing the motor to the pinion housing.

INSERT 5 MM ALLEN KEY THROUGH DISTRIBUTOR IN EITHER WORK PORT TO HOLD IN PLACE

WRIST-102

4. Insert a 5mm Allen key through a work port, marked L or R, of the motor and into the distributor so it will not fall out. Port plugs will have to be removed and the piston block (hollow splined bore) may have to be rotated to align slots in the distributor with the Allen key. Either port can be used subject to the best alignment of port and inner slot.

5. Carefully lift the motor cover and rotate 180°.

Install motor cover and align bolt holes.

Ensure the motor o-ring in the groove on the face of the support housing is not moved out of place, damaged or pinched. Remove the 5mm Allen key.

3

9

BOLTS (12)

8

1

2

17

10

WRIST-101

11

4

12

6

BOLT TIGHTENING PATTERN

7. Apply anti-seize to the 12 motor to the pinion housing bolts. Install bolts, starting with 2 opposite sides and start threads by hand.

Removing the centre port plug is necessary to install the 2 bolts on the work port side.

8. Tighten bolts using hand tools in a cross pattern as shown. Torque bolts in a 3-stage process using a cross pattern as shown.

Begin with torque wrench set to 68 N-m (50 lbf-ft). Re-set torque wrench to 108 N-m (80 lbf-ft) and repeat cross-pattern torquing. Reset torque wrench to 145 N-m (107 lbf-ft) and repeat cross-pattern torquing.

9. Complete torquing procedure by checking each bolt in a circular pattern to ensure no bolts were missed.

10. Reinstall any fittings removed during the procedure.

2.147

Service and Maintenance

19048AIL

Tigercat Bunching and Felling Saws

19047AIL

19049AIL

SEAL RING ASSEMBLY TOOL (PART # 19048A)

SHAFT ASSEMBLY BEARING SUPPORT TOOL (PART # 19049A)

19122AIL

ROTARY SEAL ASSEMBLY TOOL (PART # 19057A)

19056AIL

19051AIL

SEAL RING REMOVAL TOOL (PART #19051A)

19057AIL

BEARING ASSEMBLY TOOL, DOUBLE (PART # 19047A)

PINION ROTATING TOOL (PART # 19122A)

HOUSING ALIGNMENT TOOL (PART # 19056A)

38257A

BEARING NUT TOOL (PART # 38257A)

WRIST ASSEMBLY - SPECIAL TOOLS AVAILABLE FROM TIGERCAT

2.148

Tigercat Bunching and Felling Saws

Service and Maintenance

WRIST BEARING SEAL

OUTER RACE

INNER RACE

WRIST BEARING ASSEMBLY

SAW-D21

WRIST BEARING SEAL REPLACEMENT A seal on either side of the wrist bearing is in place to prevent entry of dust and other foreign material that would cause damage to the bearing.

WRIST BEARING SEALS

3. Apply adhesive, 3M-1300 adhesive, into the groove of the wrist bearing.

4. Start inserting the seal into the groove, make sure that the end of the seal is cut square.

Work around the diameter pressing the seal all the way into the groove. The seal should be even with out any bumps.

5. Cut the end of the seal square with a sharp knife to form a butt joint. Bond ends of seal together with loctite 495 adhesive.

6. Wipe away any excess adhesive.

OUTER RACE

SAW128

7. Apply grease to wrist bearing as outlined in felling head LUBRICATION SCHEDULE in this manual.

INNER RACE

WRIST BEARING ASSEMBLY

Inspect the seals for damage during maintenance of the wrist assembly. If a seal is damaged or is coming out of the groove it should be replaced.

The seal consists of a one piece strip long enough to go all the way around the groove.

1. Remove the damaged seal.

2. Clean the groove thoroughly. Remove all traces of old adhesive, dirt and grease.

Ensure that the groove is completely dry after cleaning.

2.149

Service and Maintenance

Tigercat Bunching and Felling Saws

WRIST BEARING WEAR LIMITS

WEAR LIMITS (340° WRIST)

It is important that the wrist bearing be periodically inspected for wear. Any significant wear will be noticeable by observing the attachment’s movement. A small amount of clearance in the bearing is normal and is present in a new attachment.

Radial clearance

Too much clearance will affect the backlash between the ring gear and the drive pinion for the 340° wrist. If left unchecked, this will cause damage to the gear teeth.

Tilt clearance

NOTE: Radial clearance in a bearing can only be measured with the bearing laying flat on a table.

New bearing = 0.004” maximum When the bearing needs replacement = 0.083” New bearing = 0.006” maximum When the bearing needs replacement = 0.108”

The main cause of wear in the ball race can be due to a lack of lubricant or not following the proper lubricating procedure. A damaged or missing peripheral seal will also contribute to early wear by allowing dirt particles to enter the ball race.

WEAR LIMITS (30° AND 110° WRIST)

Regular inspection of the seal should be carried out and the proper lubricating procedure should be followed, refer to LUBRICATION SCHEDULE in this manual.

Radial clearance

Radial clearance NOTE: Radial clearance in a bearing can only be measured with the bearing laying flat on a table.

New bearing = 0.010” maximum When the bearing needs replacement = 0.112” Tilt clearance New bearing = 0.010” maximum When the bearing needs replacement = 0.112”

2.150

Tigercat Bunching and Felling Saws

Service and Maintenance

RADIAL CLEARANCE CHECK PROCEDURE

TILT CLEARANCE CHECK PROCEDURE

NOTE: Radial clearance in a bearing can only be measured with the bearing laying flat on a table.

1. Position the saw or shear fully suspended on the machine’s boom.

1. Using a ‘C’ clamp, clamp the inner and outer races together.

2. Set the base of the dial indicator on the boom adapter and the indicator against the rear surface of the saw or shear. This location should be on the vertical at the highest of lowest point close to the bearing. Zero the dial indicator.

2. Mount a dial indicator base on the outer race and the indicator on the bore of the inner race in line with the clamp. Zero the dial indicator.

3. Using a second ‘C’ clamp, snuggly clamp the inner and outer races together directly opposite (180°) the first clamp.

4. Gradually loosen the first clamp and tighten the second clamp.

5. Read and record the dial indicator reading when the races are fully tightened the opposite way.

3. Lower the boom and apply pressure to the saw or shear.

4. Read and record the dial indicator reading.

5. Rotate the head 90° or fully in one direction, whichever is less and repeat the procedure.

6. Average both readings for the tilt clearance.

6. Move the clamps and dial indicator 90° and repeat the procedure.

7. Average both readings for the radial clearance.

SAW161

WRIST RADIAL CLEARANCE CHECK SAW160

2.151

WRIST TILT CLEARANCE CHECK

Service and Maintenance

Tigercat Bunching and Felling Saws

2.152