Tigercat 630 SKIDDER SERVICE MANUAL - PDF DOWNLOAD

SERVICE MANUAL Tigercat 630 SKIDDER Issue 2.1, MARCH 2003

TABLE OF CONTENTS SECTION INTRODUCTION .............................................................................................................. iii SAE STANDARDS ........................................................................................................... iv NON-APPROVED FIELD PRODUCT CHANGES ............................................................ v SAFETY ............................................................................................................................ 1 CONTROLS AND OPERATION ............................ See separate OPERATOR,S MANUAL LUBRICATION AND MAINTENANCE ............................................................................... 3 PILOT SYSTEM ................................................................................................................ 5 GAUGES AND ALARM CIRCUIT ...................................................................................... 6 ENGINE START AND STOP ............................................................................................. 7 DRIVE ............................................................................................................................... 8 BRAKES ............................................................................................................................ 9 OIL COOLER .................................................................................................................. 10 STEERING AND CENTER JOINT ................................................................................... 11 GRAPPLE AND ARCH .................................................................................................... 12 WINCH ............................................................................................................................ 13 DOZER ............................................................................................................................ 14

630-SM00

630 Available Literature Operator's Manual ................................. Part No. 5843A Service Manual (This Manual) .............. Part No. 6701A Parts Catalog ......................................... Part No. 5321A Hydraulic Adapters Book ....................... Part No. 1472A Hose Assemblies Book ......................... Part No. 3707A Low power complaint checklist ........... Part No. 13791A

Tigercat

®

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

Fax: (519) 442-1855

ii

Tigercat 630 Skidder

Introduction

Tigercat 630 Skidder

INTRODUCTION An Operator's manual, 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 630 Skidder.

The operator's manual will assist the operator with the techniques of proper and safe operation of the Skidder. The service manual contains safety guidelines, a preventive maintenance schedule and servicing procedures to ensure optimum machine performance.

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

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

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

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

Tigercat Industries Inc.

III

Tigercat 630 Skidder

Introduction

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

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

Tigercat may officially grant approval for modifications only by: i.

Written approval of repairs or modifications signed by the Tigercat Engineering Manager; or

ii.

Approved modifications officially released by Tigercat.

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

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

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

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

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

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

Tigercat Industries Inc.

IV

Tigercat 630 Skidder

Introduction

NON-APPROVED FIELD PRODUCT CHANGES The installation of any unauthorized attachment or changes made of any kind to this Tigercat product could affect the product's ability to perform as originally intended. The product's integrity, stability and safety 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 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 creating 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 suit 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.

V

VI

Tigercat 630 Skidder SECTION 1 - SAFETY MARCH 2003

CONTENTS - SECTION 1 BATTERY DISCONNECT SWITCH .................................................................. 1.6 COOLING SYSTEM .......................................................................................... 1.8 EXHAUST FUMES .......................................................................................... 1.10 FIRE PREVENTION FIRE PREVENTION GUIDELINES .............................................................. 1.11 WHAT ELSE TO DO BEFORE YOU EXPERIENCE A FIRE ......................... 1.12 WHAT TO DO AFTER A FIRE ...................................................................... 1.13 WHAT TO DO IN CASE OF A MACHINE FIRE ............................................ 1.12 FIRST AID ......................................................................................................... 1.4 FLUID LEAKS ................................................................................................... 1.8 HYDRAULIC PRESSURE HAZARD ................................................................. 1.8 LOOSE CLOTHING HAZARD ........................................................................... 1.9 PROTECTIVE CLOTHING ................................................................................ 1.3 SAFETY PRECAUTIONS, GENERAL ............................................................... 1.4 SAFETY PRECAUTIONS, OPERATING ........................................... 1.5, 1.6, 1.7 SAFETY PRECAUTIONS, SERVICING .......................................... 1.8, 1.9, 1.10 SAFETY SYMBOLS .......................................................................................... 1.2 SIGNAL WORDS .............................................................................................. 1.2

Tigercat 630 Skidder

Safety

SAFETY SYMBOLS

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.

Understanding Signal Words DANGER

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

WARNING

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

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

IMPORTANT

IMPORTANT is used to focus attention on items that should be checked, controlled, adjusted or cleaned to ensure the efficiency and long term operation of the machine.

1.2

Tigercat 630 Skidder

Safety attached to the machine in locations pertinent to their respective message. Keep safety labels in good condition. Repair or replace damaged labels.

GENERAL SAFETY PRECAUTIONS Remember that safety is a prime responsibility of all.

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

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

Prolonged exposure to loud noise can cause permanent hearing loss.

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

Follow all instructions from safety inspector and supervisors.

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

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

Do not let an untrained person operate the machine.

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

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

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

These safety rules highlight both general and specific measures the operator should be familiar with and adhere to. More specific measures are illustrated with pictograms which may also be

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

1.3

Tigercat 630 Skidder

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

GENERAL SAFETY PRECAUTIONS continued

Powerlines carrying up to 50,000 volts require a safety distance of 10 ft. (3m) increase this distance by 1/2 inch (10mm) for each additional 1,000 volts above the 50,000 volt level. If State/ Provincial, local or job site regulations require even greater safety distances than stated above, adhere strictly to these regulations for your own protection.

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.

Machine should be washed completely at every major service.

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

Even though the brakes are fully engaged, block the wheels to prevent movement during transport.

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

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

Do not carry passengers either in the cab or anywhere else on the machine. The vehicle seating accommodation is for one operator only.

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

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

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

The machine should be inspected daily for signs of fluid leaks, damage, unusual wear, or faulty operation. Repair or replace malfunctioning parts and systems immediately.

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

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

Do not operate the machine with the cab retaining pins removed. Always install retaining pins and fasten front guards to cab roof after lowering the cab.

When operating the machine, ensure there is adequate clearance on both sides and above the machine or any of its attachments. Additional clearance may be necessary where the ground is uneven.

Extreme caution should be exercised when approaching any area where overhanging electrical powerlines are present. Serious injury or death by electrocution can result if the machine or any of its attachments are not kept a safe distance from these lines.

1.4

Tigercat 630 Skidder

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

OPERATING SAFETY PRECAUTIONS

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

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

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

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

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

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

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

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

Sound the machine horn before starting the machine.

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

Always rest the grapple and dozer blade on the ground when operation is stopped, regardless if the engine is running or shut off.

The operator's seat is equipped with a lap belt.

Use this restraint system at all times when operating the machine.

Start the engine by following the instructions in this manual.

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

Skidder operations should only be performed from the operator's seat. Secure loose items in cab.

Never operate the winch from the ground. Control it only from the operator’s seat.

1.5

Tigercat 630 Skidder

Safety • Do not overload your skidder as this can create

OPERATING SAFETY PRECAUTIONS continued

an unstable condition and cause a roll-over.

When reeling in, make sure all personnel are far enough away in case of rolling logs or whipping cables.

Always wear your safety gloves when handling cables, chokers or logs.

Do not work below or behind a skidder parked on a grade.

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

Maintain a safe operating distance between the machine and workers and all other personnel.

Never operate the boom or grapple over the heads of bystanders.

When parking the machine: • Park on level ground only and engage parking brake

Use only prearranged and approved signalling practices.

• Do not park on a hillside or incline.

Obey flagger's signal and signs Operate the machine only from a seated position in the operator’s seat.

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

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

CAUTION

• Before leaving the operator's cab, apply the parking brake and lower the grapple and dozer blade onto the ground. Force the blade into the ground until the front wheels lift off the ground.

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

• Stop the engine and relieve any hydraulic pressure stored in the system by pressing the brake pedal 30 to 40 times.

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

• Turn the master disconnect switch off if the

NEVER travel across a STEEP slope or side hill:

vehicle is to be parked for an extended period of time (Example - overnight).

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

Before moving the machine, lift the grapple and dozer blade off the ground and keep them high enough to clear obstacles such as stumps.

• Keep load low and close to skidder for best stability.

• A load of logs will change the handling and stability of the skidder.

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

If the machine is to travel on public roads, use accessory lights (when installed) and other caution devices to alert operators of other vehicles of your presence. Ensure your machine meets all regulatory requirements.

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

• Do not approach from the downhill side of an unstable log.

• Do not winch in a load at a sharp angle. This could cause your machine to tip over.

1.6

Tigercat 630 Skidder

Safety

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

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

1.7

Tigercat 630 Skidder

Safety

SERVICING SAFETY PRECAUTIONS

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

Never use your bare hand to check for fluid leaks.

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

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

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.

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

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

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

Prior to welding on any part of the machine, it should be cleaned and a fire extinguisher should be made available at the welding location. Care must be taken in attaching the welding machine grounding clamp so current does not pass through bearings, especially the centre joint bearing. Also, turn off the master disconnect switch and disconnect the positive (+) battery cable from both batteries.

1.8

Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower grapple and dozer blade to the ground and relieve trapped pressure (from accumulator) by operating brake pedal 25 times before performing work on components, or disconnecting any hoses.

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

Tigercat 630 Skidder

Safety

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

SAFETY CABLE

••

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

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

CAB AT FULL TILT SUPPORTED

BY SAFETY CABLE Before working under cab, machine must be parked on level ground. Cab must be fully tilted with safety cable completely tight or cab support brace must be installed between frame and cab to prevent injury.

271-14A

SUPPORT BRACE

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.

271-22A

••

TILTED CAB SUPPORTED

BY SUPPORT BRACE

CAUTION Do not open cab doors or window screens when machine cab is tilted . The doors and screens are heavy and will swing out with considerable force.

SAFETY7

The hydraulic cylinder is to raise and lower cab, it must not be used as a support.

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.

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

Always wear your safety gloves when handling cables, chokers or logs.

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

1.9

Tigercat 630 Skidder

Safety

SERVICING SAFETY PRECAUTIONS continued

191-5

REMOVE LOWER PANELS

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.

138-13A

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

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

CAUTION The LOWER engine compartment access panels are NOT HINGED or permanently attached to the machine, but are held in place by the UPPER DOORS (some also have a hand knob). Therefore they can fall during the process of removing them from the machine.

Once the UPPER DOOR is opened (and the hand knob loosened) the LOWER PANEL is not fully supported and it is not safe to apply any weight or pressure to the panel, as it may fall out of the remaining supports. Do not use these LOWER PANELS as hand grips, when servicing the machine.

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

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

Dispose of fluids properly.

UPPER DOORS HAND KNOBS

•• •• ••

HAND KNOBS

•• ••

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

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

•• ••

191-3

••

LOWER PANELS

ENGINE COMPARTMENT ACCESS PANELS 1.10

Tigercat 630 Skidder

Safety dislodged by vibration this smoldering 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.

5.

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

6.

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

7.

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

8.

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

9.

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

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

1.

2.

3.

4.

Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. Inspect the machine for any signs of fuel or hydraulic system leakage and check for worn or eroded fuel or hydraulic lines before starting up any equipment.

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

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

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

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

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

Blow off all debris and dust accumulated near hot engine exhaust components (turbocharger and exhaust manifold as well as exhaust pipes and muffler) at the completion of each work shift or more frequently depending on logging conditions.

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

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

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

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

1.11

Continued on page 12

Tigercat 630 Skidder

Safety WHAT TO DO IN CASE OF A MACHINE FIRE

FIRE PREVENTION continued

•

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

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

•

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

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

•

Shut the engine off.

•

Activate the fire suppression system*

•

Radio or call for help (as appropriate).

•

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

•

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

•

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

•

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

•

Use the PASS method with most extinguishers.

Continued from page 11

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

WHAT ELSE TO DO BEFORE YOU EXPERIENCE A FIRE • •

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

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

•

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

•

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

•

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

•

•

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

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

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

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

You should have a dry chemical extinguisher rated ABC and a pressurized water extinguisher rated A.

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

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

1.12

Tigercat 630 Skidder

Safety WHAT TO DO AFTER A FIRE

FIRE PREVENTION continued

20229A

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

•

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

•

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

•

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

•

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

1.13

•

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

•

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

•

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

•

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

Tigercat 630 Skidder

Safety

1.14

Tigercat 630 Skidder SECTION 3 - LUBRICATION & MAINTENANCE NOVEMBER 1999

CONTENTS - SECTION 3 CENTER JOINT LUBRICATION ................................................................................ 3.17 MAINTENANCE .............................................................................. 3.17 FILTER AND LUBRICATION SCHEDULE ............................................ 3.9 FILTERS - REMOVE AND REPLACE FUEL FILTER/WATER SEPARATOR ............................................... 3.10 FUEL TANK STRAINER .................................................................. 3.10 HYDRAULIC OIL RETURN FILTERS .............................................. 3.11 HYDROSTATIC CHARGE PUMPPRESSURE FILTER .................. 3.12 FUEL TANK STRAINER ..................................................................... 3.10 GENERAL MAINTENANCE ................................................................. 3.3 GRAPPLE SNUBBER MAINTENANCE ............................................. 3.16 HOUR METER ~ MAINTENANCE ....................................................... 3.2 NEW MACHINE MAINTENANCE FIRST 25 HOURS ............................................................................. 3.2 FIRST 250 HOURS ........................................................................... 3.2 OIL LOST FROM LEAKAGE ................................................................ 3.2 PRESSURE SETTINGS ..................................................................... 3.18 SCHEDULED MAINTENANCE ............................................ 3.4, 3.5, 3.6 1000 HOURS .................................................................................... 3.6 125 HOURS ...................................................................................... 3.5 250 HOURS ...................................................................................... 3.5 500 HOURS ...................................................................................... 3.5 8 HOURS .......................................................................................... 3.4 FREQUENTLY .................................................................................. 3.4 SEASONAL ...................................................................................... 3.6 SERVICING AIR CONDITIONING SYSTEM ..................................... 3.14 STARTUP PROCEDURE AFTER MAJOR MAINTENANCE .............. 3.12 TIGHTENING POINTS ......................................................................... 3.2 TORQUE CHART ............................................................................... 3.19 TORQUE CHART, GENERAL ............................................................ 3.20 WHEELS, INSTALLING ........................................................................ 3.2 WINCH LUBRICATION ........................................................................ 3.3

Tigercat 630 Skidder

Lubrication and Maintenance

PREVENTIVE MAINTENANCE SCHEDULE FOR 630 SKIDDER _______________________________________________________________________________________

NEW MACHINE MAINTENANCE

TIGHTENING POINTS:-

IMPORTANT! __________________________________________

• ALL HYDRAULIC CONNECTIONS

WHEELS:

• HOSE CLAMPS

WHEN INSTALLING WHEELS, ENSURE THAT ALL PAINT HAS BEEN REMOVED FROM THE MATING SURFACES OF BOTH THE WHEEL DISC AND THE FLANGE OF THE AXLE TO ENSURE METAL TO METAL CONTACT.

• CENTER JOINT PIN SECURING BOLTS

FOR MORE COMPLETE INSTRUCTIONS ALSO REFER TO SECTION 8 OF THE SERVICE MANUAL.

• AXLE MOUNTING BOLTS

__________________________________________

• CAB SECURING BOLTS

HOUR METER ~ MAINTENANCE:

• PIN RETAINERS

CHECK THE HOUR METER ON A REGULAR BASIS TO DETERMINE YOUR SCHEDULED MAINTENANCE TIMES.

• ANY OTHER LOOSE NUT, BOLT OR FITTING

• TRANSMISSION SECURING BOLTS • ENGINE MOUNTING BOLTS • PUMP DRIVE GEARBOX SECURING BOLTS

• WHEEL RETAINING BOLTS

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

THE INTERVALS AND TIMES ON THE SCHEDULED MAINTENANCE CHART IN THIS MANUAL ARE FOR NORMAL OPERATING CONDITIONS.

_______________________________________________________________________________________

IF YOUR MACHINE IS BEING OPERATED IN DIFFICULT OR SEVERE CONDITIONS, YOU SHOULD SERVICE YOUR MACHINE AT SHORTER INTERVALS.

THE FIRST 250 HOURS:~ REPLACE OIL IN:~

__________________________________________

• PUMP DRIVE GEARBOX • TRANSMISSION

THE FIRST 25 HOURS:~

• WINCH SUMP

REPLACE:~

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

• ENGINE FUEL FILTER • ENGINE FUEL/WATER SEPARATOR • HYDRAULIC OIL PILOT PRESSURE FILTER †

*OIL LOST FROM LEAKAGE

• HYDRAULIC OIL RETURN LINE FILTERS † (2 ELEMENTS) *PREFILL FILTER WITH CLEAN OIL BEFORE INSTALLATION

LEAKAGE RATE ONE DROP IN 10 SECONDS ONE DROP IN 5 SECONDS ONE DROP SECOND THREE DROP PER SECOND DROPS BREAK INTO STREAM

• OIL IN PUMP DRIVE GEARBOX • OIL IN TRANSMISSION

LOST 0IL (GALLONS) PER PER PER DAY MONTH YEAR 0.112 3.36 40.0 0.225 6.75 81.0 1.125 33.75 405.0 3.75 112.5 1,350.0 24.00 720.0 8,640.0

_______________________________________________________________________________________ † Use only Genuine Tigercat replacement hydraulic oil filters.

3.2

Tigercat 630 Skidder

Lubrication and Maintenance

GENERAL þ FOR SAFETY, ALWAYS BLOCK OR SUPPORT GRAPPLE AND DOZER BLADE WHEN WORKING UNDER THEM.

CAUTION ALL HANDLES, STEPS AND PLATFORMS MUST BE KEPT FREE OF GREASE, OIL, FUEL, MUD, SNOW AND ICE

_______________________________________________________________________________________

WINCH LUBRICATION þ CLEAN AROUND FILLER CAPS BEFORE CHECKING OR ADDING FLUIDS

REFER TO THE MANUFACTURER'S MAINTENANCE AND SERVICE MANUAL FOR INFORMATION ON YOUR WINCH.

þ RELEASE HYDRAULIC PRESSURES AND CLEAN AROUND HYDRAULIC FITTINGS BEFORE BREAKING CONNECTION. PLUG OR CAP IMMEDIATELY

THE SUMP HOLDS 5.5 U.S. GAL. (20.8 LITRES).

THE OIL SUPPLIED IS 80-W-90.

BELOW -10°F (-23°C) USE SYNTHETIC SAE 5W, MULTIPURPOSE ATF OR SYNTHETIC ATF, WHICH ARE GOOD TO -40°F.

þ CLEAN UP SPILLS AS SOON AS POSSIBLE þ ALWAYS USE CLEAN OIL AND CONTAINERS

OIL SHOULD BE CHANGED AT FIRST 250 HRS. AND EVERY 1000 HRS, DEPENDING ON USE.

þ DRAIN DIRTY OIL WHILE STILL WARM

THE OIL LEVEL SHOULD BE CHECKED EVERY DAY (IF THE WINCH IS BEING USED) BEFORE STARTING THE MACHINE.

þ DO NOT EXCEED RECOMMENDED FLUID LEVELS þ SERVICE ALL HYDRAULIC FILTERS AFTER THE FAILURE OF A PUMP, MOTOR, CYLINDER OR VALVE. FAILURES OF THIS NATURE COULD CONTAMINATE THE ENTIRE HYDRAULIC SYSTEM

THE OIL LEVEL SHOULD BE UP TO THE OIL

AIR BREATHER/FILLER CAP

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

••

þ CLEAN UP OIL SPILLS ON WALKING SURFACES AND TOP OF ENGINE ENCLOSURE IMMEDIATELY þ BEFORE WELDING ON MACHINE BE SURE MASTER SWITCH IS DISCONNECTED

172-6

WINCH LUBRICATION

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

•• OIL LEVEL PLUG

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

172-8

þ ALWAYS HAVE A FIRE EXTINGUISHER AT HAND þ FOR SAFETY; WHEN LEAVING THE CAB OR LEAVING MACHINE UNATTENDED OR DURING SERVICE, ALWAYS LOWER GRAPPLE AND DOZER BLADE TO THE GROUND

LEVEL CHECK PLUG (REMOVE WITH ALLEN WRENCH) ON THE LEFT SIDE OF THE WINCH. KEEP THE WINCH SUMP FILLED TO THE CORRECT LEVEL BY ADDING OIL THROUGH THE AIR BREATHER CHECK VALVE ASSEMBLY ON THE LEFT SIDE OF THE WINCH.

Continued on page 4

3.3

Tigercat 630 Skidder

Lubrication and Maintenance

SCHEDULED MAINTENANCE Continued from page 3

FREQUENTLY:~

• LUBRICATE REAR DRIVE SHAFT BEARING, 1-FITTING, PURGE

• CHECK ENGINE COOLING AIR INTAKE SCREENS FOR POSSIBLE RESTRICTION

• LUBRICATE CENTER JOINT BEARINGS, 2-FITTINGS, PURGE • LUBRICATE STEERING CYLINDER ENDS, 4-FITTINGS, PURGE

______________________________________________

EVERY 8 HOURS (EVERY SHIFT):~

• LUBRICATE ARCH CYLINDERS AND PIVOTS, 6 OR 12-FITTINGS, PURGE

• PERFORM "FREQUENTLY" MAINTENANCE CHECK, AND IN ADDITION:~

• LUBRICATE DOZER BLADE CYLINDERS AND PIVOTS, 6-FITTINGS, PURGE

• CHECK ENGINE COOLANT LEVEL • CHECK ENGINE OIL LEVEL • DRAIN FUEL/WATER SEPARATOR

CLEAN:~

• CHECK AIR INTAKE PRECLEANER, CLEAN AS REQUIRED

• POTENTIALLY DAMAGING LIMBS OR STICKS FROM MACHINE

• CHECH AIR CLEANER UNLOADER VALVE

• A/C CONDENSOR, OIL COOLER,RADIATOR REFER TO CLEANING A/C CONDENSOR, OIL COOLER AND RADIATOR IN SECTION 2 OF THE OPERATOR'S MANUAL.

• CHECK ENGINE AIR FILTER RESTRICTION INDICATOR • CHECK HYDRAULIC OIL LEVEL • CHECK PUMP DRIVE GEARBOX OIL LEVEL WITH DIPSTICK

CHECK:~

• CHECK TRANSMISSION OIL LEVEL WITH DIPSTICK

• FOR LEAKAGE AROUND HYDRAULIC COMPONENTS AND FLEXIBLE HOSES * SEE "OIL LOST FROM LEAKAGE" CHART.

• CHECK WINCH SUMP OIL LEVEL • LUBRICATE FRONT AXLE PIVOT, 2-FITTINGS, PURGE

• FOR LOOSE NUTS, BOLTS AND FITTINGS

• FOR AXLES WITHOUT OUTER BEARING GREASE FITTINGS (EARLIER MACHINES): CHECK AXLES FOR OIL LEAKAGE ~ OUTER BEARINGS

• WATER PRESSURE (60 PSI) FOR PRESSURIZED WATER SYSTEM.

• CONDITION AND TENSION OF FAN BELTS.

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

• IN SUBMERGED OR SNOW CONDITIONS PERFORM THE FOLLOWING EVERY SHIFT (OTHERWISE EVERY 125 HRS)

• CONDUCT AN OVERALL VISUAL INSPECTION.

FOR AXLES WITH OUTER BEARING GREASE FITTING (LATER MACHINES): LUBRICATE AXLES - OUTER BEARINGS 1-FITTING; 4-PLACES; PURGE

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

Note: Power greasers must not be used to grease the outer axle bearings , as this may result in damage to internal seals and contamination of the hydraulic system.

______________________________________________

• LUBRICATE MID DRIVE SHAFT AND 'U' JOINTS, NOTE: LUBRICATE MID DRIVE SHAFT SLIP JOINT WITH MACHINE ARTICULATED, 3-FITTINGS, PURGE 3.4

Tigercat 630 Skidder

Lubrication and Maintenance

SCHEDULED MAINTENANCE CLEAN/REPLACE:-

EVERY 125 HOURS:~ • PERFORM "FREQUENTLY" MAINTENANCE

• AIR CONDITIONER RE-CIRCULATION FILTER

• PERFORM 8 HOUR MAINTENANCE IN ADDITION:~

• CAB FRESH AIR FILTER

AND

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

• LUBRICATE FRONT DRIVE SHAFT 1-FITTING, PURGE

CHECK:-

EVERY 250 HOURS:~

• FLUID LEVEL IN BATTERIES UNLESS MAINTENANCE FREE

• PERFORM "FREQUENTLY" MAINTENANCE

• ENGINE R.P.M.

• PERFORM 8 HOUR MAINTENANCE

• ALL HYDRAULIC PRESSURES

• PERFORM 125 HOUR MAINTENANCE AND IN ADDITION REPLACE:~

• HYDRAULIC PUMP AND MOTOR SECURING BOLTS

• ENGINE OIL AND CHANGE OIL FILTER

• CHECK FUEL TANK FILLER SCREEN

• ENGINE FUEL FILTER

• TORQUE TIGHTENING POINTS AS PER NEW MACHINE MAINTENANCE

• FUEL/WATER SEPARATOR

• PROPER OPERATION OF PRESSURIZED WATER SYSTEM. (REFER TO SECTION 2 IN THE OPERATOR'S MANUAL)

• OIL IN PUMP DRIVE GEARBOX

• FOR AXLES WITH OUTER BEARING GREASE FITTING (LATER MACHINES): LUBRICATE AXLES - OUTER BEARINGS 1-FITTING; 4-PLACES; PURGE (NOTE: IN SUBMERGED OR SNOW CONDITIONS AXLES SHOULD BE LUBRICATED EVERY SHIFT)

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

• AIR INTAKE PRIMARY ELEMENT

• OIL IN TRANSMISSION

______________________________________________

EVERY 500 HOURS:~

Note: Power greasers must not be used to grease the outer axle bearings , as this may result in damage to internal seals and contamination of the hydraulic system.

VISUALLY CHECK FOR DAMAGE TO:-

• PERFORM "FREQUENTLY" MAINTENANCE • PERFORM 8 HOUR MAINTENANCE • PERFORM 125 HOUR MAINTENANCE • PERFORM 250 HOUR MAINTENANCE AND IN ADDITION REPLACE:~

• ARCH AND PIVOT LINKAGE

• AIR INTAKE SAFETY ELEMENT

• FRONT AND REAR FRAME

• HYDRAULIC OIL PILOT PRESSURE FILTER †

• CENTER JOINT AREA

• HYDRAULIC OIL RETURN LINE FILTERS † (2 ELEMENTS)

• ATTACHMENT

*PREFILL FILTER WITH CLEAN OIL BEFORE INSTALLATION

MAKE REPAIRS IMMEDIATELY

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

VISUALLY INSPECT FOR:• FRAYED ELECTRICAL WIRING AND HYDRAULIC HOSE • WEAR IN ANY OTHER COMPONENTS

† Use only Genuine Tigercat replacement hydraulic oil filters.

3.5

Continued on page 6

Tigercat 630 Skidder

Lubrication and Maintenance

SCHEDULED MAINTENANCE Continued from page 5

EVERY 1000 HOURS:~ • PERFORM "FREQUENTLY" MAINTENANCE • PERFORM 8 HOUR MAINTENANCE • PERFORM 125 HOUR MAINTENANCE • PERFORM 250 HOUR MAINTENANCE • PERFORM 500 HOUR MAINTENANCE AND IN ADDITION REPLACE OIL IN:~ • WINCH SUMP

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

SEASONAL:~ • DRAIN AND REFILL HYDRAULIC OIL TANK AND BOTH FRONT AND REAR AXLES WITH RECOMMENDED HYDRAULIC OIL. SEE "APPROVED HYDRAULIC OILS" ALSO SEE SECTION 8 OF THE SERVICE MANUAL FOR AXLE DRAINING PROCEDURE. • DRAIN AND REFILL PRESSURIZED WATER SYSTEM. (REFER TO SECTION 2 IN THE OPERATOR'S MANUAL) ______________________________________________

3.6

Tigercat 630 Skidder

Lubrication and Maintenance

APPROVED HYDRAULIC OILS IN ADDITION TO PROVIDING THE VEHICLE WITH ITS NORMAL OPERATIONAL FUNCTIONS, HYDRAULIC OIL IS ALSO USED TO FILL THE AXLE ASSEMBLIES, APPLY BRAKES AND OPERATE DIFFERENTIAL LOCKS. WET DISK BRAKES IN THE AXLES REQUIRE OIL WITH SPECIFIC PROPERTIES TO ENSURE REDUCED CHATTER AND ENSURE PROPER LUBRICATION OF MECHANICAL COMPONENTS. USE ONLY ONE OF THE FOLLOWING OILS TO FILL OR REPLENISH THE HYDRAULIC SYSTEM. CHEVRON

TRACTOR HYDRAULIC FLUID (SUMMER)

CITGO

TRACTOR HYDRAULIC FLUID (33-310) (SUMMER)

IMPERIAL

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

SHELL

DONAX TD (SUMMER) DONAX TDL (WINTER)

SUN

SUNFLEET TH FLUID (SUMMER)

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

3.7

Tigercat 630 Skidder

Lubrication and Maintenance

3.8

REP REP

Lubrication and Maintenance REF. NUMBER

1000 HOURS

500 HOURS

250 HOURS

125 HOURS

EVERY SHIFT 8 HOURS

FIRST 250 HOURS

FIRST 25 HOURS

Tigercat 630 Skidder

FILTER AND LUBRICATION SCHEDULE

FILTER AND LUBRICATION SCHEDULE DESCRIPTION

CAPACITY LITRE USG

CHK CHANGE COOLANT EVERY 2 YEARS

1 COOLING SYTEM 50% ANTIFREEZE 50% WATER

CHK

REP

DRN

REP REP

2 ENGINE OIL/FILTER CUMMINS 'C' SERIES 3 FUEL FILTER (ENGINE) 4 FUEL/WATER SEPARATOR 5 FUEL TANK FILLER SCREEN 6 AIR INTAKE PRE CLEANER

CHK CHK REP REP

40

10.6

18.9

5

20L (5.3 USG) ANTIFREEZE ** 20L (5.3 USG) DISTLD. WATER SEE ENGINE MANUFACTURER'S MAINTENANCE MANUAL 1 1 1 1

6 AIR INTAKE PRIMARY ELEMENT

1

6 AIR INTAKE SAFETY ELEMENT

1

CHK

7 AIR CLEANER UNLOADER VALVE

1

CHK

8 HYDRAULIC RESERVOIR (GAUGE ON TANK)

95

25

1

REP †

REP †

9 HYDRAULIC OIL RETURN LINE FILTER

2

REP † D/R D/R CHK

REP †

1

D/R

10 HYDRAUILIC OIL PILOT PRESSURE FILTER 11 PUMP DRIVE GEARBOX CHECK LEVEL WITH DIPSTICK

D/R D/R CHK

D/R

12

TRANSMISSION

WELDED CAST

13

AXLES-DIFFERENTIAL

FRONT REAR

LUB LUB LUB *** ***

14 AXLE - PIVOT (FRONT ONLY) 15 AXLES - OUTER BEARINGS

LUB

16 DRIVE SHAFT, MID: SHAFT* & U-JOINTS

REMARKS/LUBRICANT

No.

3

0.8

1

4 6

1.1 1.6

1

32 11.9 52 13.7 PURGE *CHECK/ PURGE

2 2 4

CLEAN AS REQUIRED CHECK FILTER RESTRICTION INDICATOR WITH ENGINE RUNNING REFER TO SECTION 2 IN THE OPERATOR'S MANUAL FOR DETAILS DRAIN AND REFILL AS REQ'D BY SEASONAL OIL CHANGE SEE HYD. OIL CHART CHECK FILTER RESTRICTION INDICATOR ON FILTER WITH ENGINE RUNNING AT FULL AND WITH OIL FLOW FILL WITH MIL-L-2105C or API-GL-5 LUBRICANT GRADE/WEATHER TEMERATURE: BELOW -10°F (-23°C) USE 75W UP TO 100°F ( 38°C) USE 80W-90 ABOVE 100°F ( 38°C) USE 85W-140 D/R WITH SEASONAL OIL CHANGE LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u *AXLES WITHOUT GREASE FITTINGS - CHECK FOR OIL LEAKAGE. *AXLES WITH GREASE FITTINGS - PURGE *** AXLES WITH GREASE FITTINGS SHOULD BE LUBRICATED EVERY 8 HOURS WHEN OPERATING IN SUBMERGED OR SNOW CONDITIONS

PURGE

3

LITHIUM BASE EP2 GREASE u

PURGE PURGE PURGE PURGE PURGE PURGE PURGE

1 1 2 4 6 12 6

LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u LITHIUM BASE EP2 GREASE u SEE GRAPPLE MANUFACTURER'S MAINTENANCE MANUAL SEE WINCH MANUFACTURER'S MAINTENANCE MANUAL SEASONAL DRAIN AND REFILLL

*LUB. SLIP JOINT WITH MACHINE ARTICULATED

LUB LUB LUB LUB LUB LUB LUB

D/R CHK CHK TEST

16 16 17 18 19 20 21 22

DRIVE SHAFT, FRONT: SHAFT DRIVE SHAFT, REAR:BEARING CENTER JOINT STEERING CYLINDERS SINGLE ARCH CYLINDERS & PIVOTS DOUBLE ARCH CYLINDERS & PIVOTS DOZER BLADE CYLINDERS & PIVOTS GRAPPLE

D/R 23 WINCH 24 PRESSURIZED WATER SYSTEM

20.8

5.5

41.6

11

u LITHIUM BASE EP2 GREASE CONTAINING MOLYBDENUM DISULFIDE (SEE RECOMMENDED GREASES IN THIS SECTION FOR DETAILS) ** ANTIFREEZE MUST MEET GM 6038M SPECIFICATIONS • SEE MANUFACTURERS MAINTENANCE MANUAL LEGEND: CHK - CHECK REP - REPLACE DRN - DRAIN D/R - DRAIN AND REFILL LUB - LUBRICATE † Us e only Ge nuine Tige rcat re place me nt Hydraulic oil filte rs .

630-LUBCHART

3.9

Tigercat 630 Skidder

Lubrication and Maintenance 12. Screw the new filter on to the filter head until the gasket makes contact with the seat and then hand tighten an additional 3/4 turn only.

13. Turn the fuel shut-off valve ON, start the engine and check for leaks.

FILTERS - REMOVE AND REPLACE

IMPORTANT Failure to service and replace filters at the proper intervals specified in the manufacturer's manuals, could cause damage to the machine and result in the product warranty becoming NULL and VOID. Check Tigercat parts catalog for replacement filters.

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

FUEL FILTER/WATER SEPARATOR

Changing or cleaning the strainer:

This is a combination unit, with a replaceable fuel filter and a removable water sediment bowl on the bottom of the unit. The water sediment bowl is only replaced if it becomes damaged or non-functional.

For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.

1. Park machine on level ground, install articulation lock pin, lower dozer and grapple to the ground , stop engine, pull parking brake ON and block wheels.

2. Drain the fuel tank. (plug in bottom) 3. Remove the round fuel tank cover plate and “O” ring from the access hole.

4. Before removing the strainer, clean any debris from the bottom of the tank and wipe it clean.

5. Remove the fuel strainer using the hex on the end of strainer. Carefully clean the strainer (it may be damaged by rough handling).

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

7. Reinstall the strainer using the hex on end.

8. Reinstall fuel tank cover plate with “O” ring.

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

Changing the filter: 1. Park machine on level ground, install articulation lock pin, lower dozer and grapple to the ground, stop engine, pull parking brake ON and block wheels.

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

3. Place rags below to catch the spillage of fuel.

4. Wearing face protection (in case of a fuel squirt) turn OFF the fuel shut-off valve on the side of the fuel tank and unscrew the old filter.

5. Remove and discard the small 1” I.D. gasket from the threaded extension on the filter head.

6. Remove the water sediment bowl from the bottom of the old filter. Discard this gasket also.

Dispose of old filter and any fuel properly.

7. Clean the water sediment bowl.

8. Check the seating area for the gaskets on the filter head and the water sediment bowl and wipe clean.

9. Lubricate gasket for bottom of filter and water sediment bowl with clean engine oil and carefully hand tighten the water sediment bowl onto the new filter. It is plastic and will break if over tightened. Close the water drain valve.

10. Lubricate the new 1” I.D. gasket with clean engine oil and install onto the threaded extension on the filter head.

11. Lubricate the gasket on top of the new filter with clean engine oil and prefill the filter with clean fuel.

3.10

Tigercat 630 Skidder

Lubrication and Maintenance

HYDRAULIC OIL RETURN FILTERS

•

The hydraulic return line contains a double filter filter heads with built-in bypass. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.

FILTER HEAD

• GASKET

•

FILTER ELEMENT

Changing the filters:

SQUARE SECTION GASKET INSTALLATION 1. Park machine on level ground, install articulation lock pin, lower dozer and grapple to ground, stop engine, pull parking brake ON and block wheels.

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

3.

Place rags below to catch the spillage of oil.

4.

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

6.

The new Tigercat filter is supplied with two gaskets enclosed, examine the filter head closely to determine which gasket should be used and follow the instructions to ensure proper installation.

FILTR_SEALS 2

n

Square Section Gasket Remove used gasket and clean groove in head.

Apply clean oil to new gasket surfaces.

Install new gasket into groove in filter head.

Prefill filter with clean oil before installation. Screw on new filter until gasket makes contact.

Tighten filter an additional 3/4 turn.

FILTER HEAD

• • GASKET

• FILTR_SEALS 2

l

FILTER ELEMENT

'O' RING GASKET INSTALLATION

'O' Ring Gasket Remove used gasket and clean gasket seat in head.

Apply clean oil to new gasket surfaces.

Install new gasket on inside lip of filter.

Prefill filter with clean oil before installation.

Screw on new filter until gasket makes contact.

Tighten filter until top edge makes metal to metal contact with filter head. (approximately 1 1/2 additional turns after gasket contact)

7.

3.11

Start the engine and check for leaks.

Tigercat 630 Skidder

Lubrication and Maintenance STARTUP PROCEDURE AFTER MAJOR MACHINE MAINTENANCE

HYDROSTATIC CHARGE PUMP PRESSURE FILTER

This procedure should be followed:

This single full flow filter, is mounted in the output side of the hydrostatic charge pump. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.

•

after major service or a rebuild.

•

whenever the machine has been drained of hydraulic oil.

Changing the filter:

•

when any major component has been removed, repaired or replaced.

1. Park machine on level ground, install articulation lock pin, lower dozer and grapple to ground, stop engine, pull parking brake ON and block wheels.

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

3. Place rags below to catch the spillage of oil.

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

5. Check the seating area for the gasket on the filter head and wipe it clean.

6. The new filter has an attached gasket. Apply hydraulic oil to the gasket surface.

7. Screw on the new filter until the gasket makes contact with the seat in the filter head. DO NOT PREFILL THE NEW PRESSURE FILTER. 8. Hand tighten filter an additional 1/2 turn only.

9. Start the engine and check for leaks.

PRE-STARTUP AND FILLING 1.

Ensure all filters are in place. Pre-fill only the hydraulic oil return filters only. Do not pre-fill the hydrostatic charge pump pressure filter.

2.

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

3.

Check coolant level in the radiator.

4.

Do a final inspection of all fittings and clamps to make sure they are tight and will not leak.

5.

Install the articulation lock pin and apply the parking brake.

6.

Turn both differential lock switches to OFF.

7.

Do not start engine. Purge air from hydraulic system by adding oil as follows;

•

Prepare the hand fill pump on the machine to add hydraulic oil. Clean the fill line pipe, remove cap on end of pipe and insert pipe into oil supply drum.

•

Pre-fill the cases of the hydrostatic pump and any other components that have been drained of oil.

•

Loosen plug on the top centre of hydrostatic drive pump servo

•

Loosen plug on the side of the hydrostatic drive pump.

•

Loosen plug on the outside of the main pump.

•

Loosen plugs on both motors.

•

Operate the hand fill pump at medium speed, using a steady motion.

•

Watch for oil leaking from each plug previously loosened and tighten each plug when oil leaks out.

•

Continue pumping slowly and watch the oil sight gauge on the reservoir. Continue pumping slowly until the hydraulic tank is full.

IMPORTANT Filters that are an integral part of the engine (fuel and lubricating oil) should be serviced and replaced according to the engine manufacturer's operation and maintenance manual.

IMPORTANT Contaminated hydraulic fluid can lead to premature failure of hydraulic components and costly repairs. Filters must be replaced at the recommended time intervals, Refer to SCHEDULED MAINTENANCE in THIS SECTION. Only Tigercat replacement filters must be used.

Do not substitute with other cheaper inferior brands. Tests have shown that Tigercat filters can have up to twice the filtering capacity as that of other name brands.

NOTE: If the axles were drained of oil, refer to FILLING THE AXLES in SECTION 8 of THIS MANUAL. 3.12

Tigercat 630 Skidder

Lubrication and Maintenance NOTE:If possible, allow the machine to stand for 4 to 6 hours before setting any of the operating pressures. This will allow any air bubbles in the oil to escape and is a good time to check for leaks.

MACHINE STARTUP Before beginning this procedure, perform the PRE-STARTUP AND FILLING steps.

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

1.

Ensure the articulation lock pin is installed.

2.

Disconnect red and white wires on injector pump solenoid (prevents engine starting).

3.

Crank engine for 10 seconds, wait for 10 seconds. Repeat 6 times to pump oil into pumps.

4.

Reconnect wires on injector pump solenoid.

Do not start engine.

5.

Install a 0-1000 psi. gauge on drive pump to check charge pressure at ‘G’ ( TEE fitting).

Watch gauge closely during startup.

6.

Start engine. If charge pressure does not rise within 5 to 10 seconds, TURN ENGINE OFF. If charge pressure is between 260 and 450 psi., run engine at IDLE for 20 minutes. Check engine oil pressure in cab.

Do not operate any functions. Remove guage from 'G'.

7.

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

8.

Turn both differential locks ON and run engine at IDLE for 30 minutes to purge air and fill axles with oil (axles fill with leakage from diff. locks). If wheels have been removed, operate forward and reverse pedals very slowly to fill axles with oil.

9.

Set throttle to IDLE and run each function for 2 minutes to purge air from circuit.

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

11. Top up the radiator with clean coolant. With cylinders fully retracted, top up the hydraulic oil reservoir with clean hydraulic oil.

NOTE:If the machine was on wheels, the steer and drive functions were not properly purged or flushed. Remove the articulation lock pin and at LOW IDLE, slowly operate the steer function right and left a few times.

With the parking brake released and at LOW IDLE, slowly operate the drive function forward and reverse a few times.

3.13

Tigercat 630 Skidder

Lubrication and Maintenance

SERVICING AIR CONDITIONING SYSTEM f. Check the condenser core for dirt and debris. Clean as required. Refer to CLEANING A/C CONDENSOR, OIL COOLER AND RADIATOR in THIS SECTION. g. Run air conditioning system for 3 - 5 minutes.

IMPORTANT: It is recommended that during cold weather when the A/C system is not in use, that it be run for a period of 5 minutes every 2 weeks.

This will circulate oil to all components of the A/C system.

R134a REFRIGERANT

PAG OIL (polyalkylene glycol)

3 LBS. 0 OZ.

• Check sight glass (A) on receiver drier. (recessed hole) NO BUBBLES should be seen in sight glass. If bubbles are present see your authorized service dealer.

7 OZ.

Any service work must be performed by authorized A/C technicians. The system should be charged only with R134a refrigerant. PAG (polyalkeylene glycol) oil should be present in the system and must be used on 'O' ring fittings during assembly.

• Check moisture indicator sight glass (B). (protruding unit) BLUE indicates DRY, PINK indicates WET. If sight glass shows PINK (WET) see your authorized service dealer.

Use checklist to maintain system between service intervals. The compressor and charge valves are accessed from the right side engine compartment.

The receiver drier is accessed from the compartment behind the right door, on the outside. NOTE - Also see Operator's Manual.

Damage can occur to system if allowed to run wet.

SIGHT GLASS (A)

a. Check and adjust compressor drive belt tension.

••

b. Check air intake filters and clean. c. Check the evaporator core and clean. d. Check to see that compressor clutch will engage. e. Check blower operation.

178-3

CAUTION If using compressed air for cleaning, use at 30 psi or less.

Always use personal protective equipment to guard against flying debris.

RECEIVER DRIER

SIGHT GLASS (B)

••

178-4

191-13

CHECK A/C CONDENSER CORE 3.14

RECEIVER DRIER

Tigercat 630 Skidder

Lubrication and Maintenance

• ENGINE

SHUT-OFF VALVE

274-5

FRESH AIR FILTER

•

•

HOSE TO A/C HEATER UNIT

•

HOT WATER SHUT OFF VALVE

HOT WATER SHUT OFF VALVE (ENGINE) To maximize the efficiency of the air conditioning, the heat control on the A/C heater control panel must be rotated to the "OFF" position. During times when cab heating is not required the HOT WATER SHUT OFF VALVE, on the heater hose from the engine, should also be closed to prevent hot water from seeping through the a/c unit, thereby reducing the cooling system effect.

RECIRCULATING AIR FILTER

151-19

FRESH AIR FILTER

FILTER - FRESH AIR When the control knob (3) is in the FRESH position (rotated to the right), outside air is drawn into the cab air conditioning unit through this filter and mixed with interior air from the cab. The filter is accessible from outside of the cab, at the back between the lights. It should be cleaned or replaced every 125 hours. This is done by removing 6 bolts (3/8) and removing the air inlet cover. Next remove two nuts (1/4) and remove the filter box cover. This will allow access to the filter.

WARNING - These filters may require cleaning or replacement more frequently under extreme operating conditions.

HEAT CONTROL DIAL

•

•• 151-9

VENTS BEHIND SEAT - 2

FILTER, RECIRCULATING AIR - A/C UNIT When the control knob (3) is in the RECIRCULATING position (rotated to the left), air in the cab is drawn into the A/C-HEATER unit via this filter and recirculated. The filter is located at the base of the A/C unit. It should be cleaned or replaced every 125 hours. This is done by removing two thumb screws in the filter box cover.

271-24AC

A/C-HEATER CONTROL PANEL

HEAT - VARIABLE This is a variable, rotary dial to adjust the amount of heated air for the cab. Make sure this control is off, when using the air conditioning.

3.15

Tigercat 630 Skidder

Lubrication and Maintenance

GRAPPLE SNUBBER MAINTENANCE

IMPORTANT IMPORTANT All service points on snubber must be greased every shift (8 hours) to ensure a long service life.

QUADCO MODEL 500 SNUBBER USED ON TIGERCAT GRAPPLES In this model the snubbers are independant of the link. Separate snubbers provide snubbing action in two directions. There are 6 grease fittings, 3 on each snubber, for daily lubrication of the sleeves and housings.

ADJUSTING SNUBBER TENSION Tension is adjusted by tightening the end cap bolt.

Tighten the end cap bolt only 1/2 turn at a time until the desired tension is acheived.

Overtightening may result in grapple stiffness and reduce friction sleeve life.

QUADCO MODEL 1500 SNUBBER USED ON ESCO GRAPPLES In the model 1500 the snubbers and link are combined and provide snubbing action in two directions. There are a total of 12 grease fittings for daily lubrication of the sleeves and housings.

ADJUSTING SNUBBER TENSION Tension is adjusted by turning the adjusting bolts.

Each of the two snubber has two adjusting bolts.

Turn adjusting bolts only 1/2 turn at a time until the desired tension is acheived. Overtightening may result in grapple stiffness and reduce friction sleeve life.

Note: Tightening the acorn nuts which hold link pins in place has no effect on snubber tension.

Over tightening of these nuts may damage the link and impair snubber function.

ACORN NUTS

• • LINK

•

• GREASE FITTINGS

• ADJUSTING BOLTS

FRICTION SLEEVE

ADJUSTING BOLTS

•• FRICTION SLEEVE

•• • END CAP BOLT

• CY023

QUADCO MODEL 500 SNUBBER

CY014

3.16

QUADCO MODEL 1500 SNUBBER

Tigercat 630 Skidder

Lubrication and Maintenance

CENTER JOINT MAINTENANCE OF CENTER JOINT Maintenance in this area is usually limited to: a)

Regular lubrication of the two center joint grease fittings to purge the pivot bearings of debris and water. Refer to SCHEDULED MAINTENANCE in THIS SECTION for lubrication intervals. Use only high quality, lithium based EP2 grease containing molybdenum disulphide.

b)

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

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

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

3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked.

Refer SECTION 11 of the service manual for more information..

REAR CHASSIS

CHECK FOR MOVEMENT IN THIS JOINT AREA

DIG-003

FRONT CHASSIS

1000 HOUR CHECK

3.17

Tigercat 630 Skidder

Lubrication and Maintenance

PRESSURE SETTINGS Pressure and Speed Settings (120°F-140°F) Engine RPM .............................................................. 2450-2460 rpm full throttle 900-1000 rpm idle HYDROSTATICS CHARGE PRESSURE Rexroth Pump ............................................................ 450-460 psi Rexroth Motor ............................................................ Non-Adjustable

MAIN RELIEFS P.O.R. Forward .......................................................... 6200-6250 P.O.R. Reverse .......................................................... 6200-6250 High Pressure Relief Forward with 150-155 psi @ ‘x’ (y1) . 6850-6900 High Pressure Relief Reverse with 145 psi @ ‘x’ (y2) ........ 6850-6900

psi psi psi psi

DRIVE MOTORS Drive Motor P.O.R. (x = 10.9mm) ............................... 4400-4450 psi Drive Motor Begin of Displacement Control (x = 11.7mm) . 150-155 psi Minimum Displacement (90mm screw length) .................... x = 16mm

@ full throttle

@ @ @ @

full throttle full throttle full throttle full throttle

@ full throttle @ full throttle

MAIN PUMP Pump P.O.R. .............................................................. 3000-3100 psi

@ idle

MULTIFUNCTION VALVE Main Relief ................................................................. 3500-3550 psi Pressure Reducing Valve, Diff-Locks ......................... 625-630 psi Pressure Cut Off Valve, Diff-Locks ............................. 750-755 psi

@ idle @ idle @ idle

DOZER VALVE Dozer Up Port Relief .................................................. 3500-3600 psi Dozer Down Port Relief .............................................. 3500-3600 psi

@ idle @ idle

GRAPPLE VALVE Boom Up Port Relief .................................................. 3500-3600 Boom Down Port Relief .............................................. 2500-2600 Rotate CW Port Relief (if equipped) ........................... 3500-3600 Rotate CCW Port Relief (if equipped) ........................ 3500-3600 Grapple Open Port Relief ........................................... 3500-3600 Grapple Close Port Relief........................................... 3650-3700 Arch In Port Relief ...................................................... 3500-3600 Arch Out Port Relief ................................................... 2500-2600 Winch In Port Relief (if equipped)............................... 3500-3600

@ @ @ @ @ @ @ @ @

psi psi psi psi psi psi psi psi psi

idle idle idle idle idle idle idle idle idle

BRAKES Brake Maximum Pressure .......................................... 1000 psi @ idle Brake applications - engine off (5 applications) .......... 800 psi minimum NOTE: The above values are for reference purposes only, SEE SERVICE MANUAL FOR SETTING PROCEDURES. ISSUE 3 1099

3.18

Tigercat 630 Skidder

Lubrication and Maintenance

TORQUE CHART LOCATION

Cylinders Pin bolts Piston nut, steer cylinder Piston nut, arc/boom cylinder Piston nut, dozer cylinder Gland, steer cylinder Keeper plate bolts Keeper plate bolts

THREAD DIAMETER

TORQUE (LUBRICATED) lbf-ft Nm

3/4" UNC 1 3/8" UNF 1 3/4" UNF 1 3/8" UNF 3/4" UNC 5/8" UNC

282-310 1100 1750 1260 550 282-310 159-175

393-420 1491 2372 1711 745 389-427 216-237

Cab pin keeper plate bolts

3/4" UNC

282-310

393-420

Center joint bearing Bearing retaining bolts Pin retaining bolts

1/2" UNC 3/4" UNC

80-88 282-310

109-119 393-420

Engine mounting Bolts Bolts, brkt. to bell hsg.

7/8" UNC M16

600 200

827 275

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

3/8" UNC 10 x 1.5 5/8" UNC

33-36 32 159-175

45-49 43 216-237

1 1/4" x 18 UNEF 3/4" UNC

475-525 80-88

640-711 109-119

1/2" UNF

90-99

122-134

1/2" UNF

90-99

122-134

1/2" UNF

90-99

122-134

Axle mounting bolts Front Rear

3/4" UNC 7/8" UNC

282-310 455-501

393-420 617-679

Wheel bolts

7/8" UNF

501-550

679-745

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

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

3.19

Tigercat 630 Skidder

Lubrication and Maintenance

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

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

IMPERIAL

GRADE 5 BOLTS

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

DRY lbf-ft Nm 11 - 12 15 - 16 20 - 28 27 - 38 44 -48 60 - 65 70 - 77 95 - 104 106 - 117 144 - 158 153 - 168 208 - 228 212 - 233 288 - 316 376 - 414 510 - 561 606 - 667 822 - 904 909 - 1000 1233 - 1355 1288 - 1417 1746 - 1921 1817 - 1999 2464 - 2710 DRY lbf-ft Nm 13 - 14 18 - 19 23 - 28 31 - 38 49 - 54 67 - 73 78 - 86 106 - 116 120 - 132 163 - 179 171 - 188 232 - 255 240 - 264 326 - 358 420 - 462 570 - 626 668 - 735 906 - 996 995 - 1096 1359 - 1486 1445 - 1590 1960 - 2155 2012 - 2213 2728 - 2997

LUBRICATED lbf-ft Nm 8 - 10 11 - 13 26 - 30 35 - 40 33 - 36 45 - 49 52 - 57 71 - 77 80 - 88 109 - 119 115 - 127 156 - 172 159 - 175 216 - 237 282 - 310 393 - 420 455 - 501 617 - 679 682 - 750 925 - 1016 966 - 1062 1310 - 1441 1360 - 1496 1844 - 2027 LUBRICATED lbf-ft Nm 10 - 13 14 - 17 18 - 25 25 - 33 37 - 41 50 - 55 58 - 64 79 - 86 90 - 99 122 - 134 128 - 141 174 - 191 180 - 198 244 - 268 315 - 347 427 - 470 501 - 550 679 - 745 746 - 821 1012 - 1113 1083 - 1191 1469 - 1613 1509 - 1660 2046 - 2250

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

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

METRIC

SIZE

M6 M8 M10

CLASS 4.8 LUBRICATED DRY Nm lbf-ft Nm lbf-ft 4.8 3.5 6 4.5 12 8.5 15 11 23 17 29 21

CLASS 8.8 OR 9.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft 9 6.5 11 8.5 22 16 28 20 43 32 55 40

CLASS 10.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft 13 9.5 17 12 32 24 40 30 63 47 80 60

CLASS 12.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft 15 11.5 19 14.5 37 28 47 35 75 55 95 70

M12 M14 M16

40 63 100

29 47 73

50 80 125

37 60 92

75 120 190

55 88 140

95 150 240

70 110 175

110 175 275

80 130 200

140 225 350

105 165 225

130 205 320

95 150 240

165 260 400

120 190 300

M18 M20 M22

135 190 260

100 140 190

175 240 330

125 180 250

260 375 510

195 275 375

330 475 650

250 350 475

375 530 725

275 400 540

475 675 925

350 500 675

440 625 850

325 460 625

560 800 1075

410 580 800

M24 M27 M30

330 490 675

250 360 490

425 625 850

310 450 625

650 950 1300

475 700 950

825 1200 1650

600 875 1200

925 1350 1850

675 100 1350

1150 1700 2300

850 1250 1700

1075 1600 2150

800 1150 1600

1350 2000 2700

1000 1500 2000

M33 M36

900 1150

675 850

1150 1450

850 1075

1750 2250

1300 1650

2200 2850

1650 2100

2500 3200

1850 2350

3150 4050

2350 3000

2900 3750

2150 2750

3700 4750

2750 3500

3.20

Tigercat 630 Skidder SECTION 5 - PILOT SYSTEM OCTOBER 1999

CONTENTS - SECTION 5 CHARGE PRESSURE FILTER ............................................................ 5.2 CHARGE PUMP ................................................................................... 5.2 CIRCUIT DIAGRAM SERIAL NUMBER 6300101 TO 6300400 ........... 5.4 CIRCUIT DIAGRAM SERIAL NUMBER 6300401 TO 6300610 ........... 5.5 CIRCUIT DIAGRAM SERIAL NUMBER 6300611 TO 6300999 ........... 5.6 PILOT MANIFOLD ............................................................................... 5.3 PILOT OIL CIRCUIT ............................................................................. 5.2 SET PILOT PRESSURE ...................................................................... 5.2

Tigercat 630 Skidder

Pilot system

PILOT OIL CIRCUIT

differential pressure relief valve which will bypass oil to tank if the pressure differential exceeds 50 psi. In cases of loss of control or slow response the condition of this filter should be suspected.

The pilot circuit operates at 450 psi. and is supplied with oil from the internal gear charge pump in the drive pump.

CHARGE PRESSURE RELIEF VALVE

The system supplies pilot oil for the dozer, winch, forward/reverse travel and all of the grapple and boom functions. The pilot oil is distributed to the different functions through the pilot manifold, located on the under side of the operator’s cab.

CHARGE PUMP

SET PILOT PRESSURE - for dozer, winch, forward/reverse travel and grapple functions.

The pilot pressure (450 psi) is controlled by the charge pressure relief valve located in the drive pump housing.

••

Refer to SECTION 8 of THIS MANUAL under DRIVE PUMP PRESSURE ADJUSTMENT.

•• •• DRIVE PUMP

DRIVE PUMP/CHARGE PUMP

188-1

The pilot pressure (450 psi) is controlled by the charge pressure relief valve located in the drive pump housing.

The charge pressure relief valve adjustments are explained in SECTION 8 of THIS MANUAL under DRIVE PUMP PRESSURE ADJUSTMENT. The oil is filtered by an inline pressure filter before going into the pilot circuit. This is a cartridge filter mounted on the front of the reservoir. It has a

DOUBLE ELEMENT FILTERS

••

CHARGE PRESS. FILTER

•

DRIVE PUMP STEER, DOZER, GRAPPLE PUMP

•

•• •

284-21A

FILTERS

COOLING PUMP

5.2

Tigercat 630 Skidder

Pilot system MACHINES WITH SERIAL NUMBER 6300401 TO 6300999

MACHINES WITH SERIAL NUMBER 6300101 TO 6300400 GRAPPLE 'OPEN' DRIVE PREVENT PILOT VALVE

GRAPPLE CLOSE

GRAPPLE ROTATE 'CW' GRAPPLE ROTATE GRAPPLE 'CCW' CLOSE

GRAPPLE ROTATE 'CW' GRAPPLE ROTATE 'CCW'

GRAPPLE 'OPEN'

••

••

••

•

••

WINCH FREESPOOL

• • •• • • •

PILOT MANIFOLD UNDER CAB

190-21AA

PILOT MANIFOLD VALVE BENCH

270-10A

WINCH FREE SPOOL VALVE

••

CAB DRAIN MANIFOLD

PILOT MANIFOLD

• •• DRIVE PREVENT VALVE

•

115-25A

PILOT MANIFOLD UNDER CAB

270-20A

5.3

DRIVE PREVENT SOLENOID VALVE UNDER CAB

Tigercat 630 Skidder

630-09

Pilot system

PILOT SUPPLY CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 5.4

Tigercat 630 Skidder

630-22

Pilot system

PILOT SUPPLY CIRCUIT SERIAL NUMBERS 6300401 TO 6300610 5.5

Tigercat 630 Skidder

630-14

Pilot system

PILOT SUPPLY CIRCUIT SERIAL NUMBER 6300611 TO 6300999 5.6

Tigercat 630 Skidder

SECTION 6 - ELECTRICAL, GAUGES AND ALARMS OCTOBER 1999

CONTENTS - SECTION 6 FUSE AND RELAY PANEL (6300481 TO 6300999) ....................................................... 6.8 GAUGES AND ALARMS ................................................................................................ 6.9 SCHEMATIC DIAGRAM (6300101 TO 6300400) ................................................... 6.2, 6.3 SCHEMATIC DIAGRAM (6300401 TO 6300480) ................................................... 6.4, 6.5 SCHEMATIC DIAGRAM (6300481 TO 6300999) ................................................... 6.6, 6.7 SENSOR DETAILS ......................................................................................................... 6.9 SWITCH AND SENSOR LOCATIONS (6300101 TO 6300400) ................................... 6.10 SWITCH AND SENSOR LOCATIONS (6300420 TO 6300500) ................................... 6.11 SWITCH AND SENSOR LOCATIONS (6300501 TO 6300999) ................................... 6.12 TROUBLESHOOTING AND TESTING .......................................................................... 6.9 WIRE COLOUR CODE CHART ..................................................................................... 6.8

Tigercat 630 Skidder

Electrical, gauges and alarms

REFER TO COLOUR CODE CHART IN THIS SECTION

630-12

MACHINE SCHEMATIC DIAGRAM 3011B REV.6(SHEET 1) SERIAL NUMBERS 6300101 TO 6300420 6.2

Tigercat 630 Skidder

630-13

Electrical, gauges and alarms

MACHINE SCHEMATIC DIAGRAM 3011B REV.6 (SHEET 2) SERIAL NUMBERS 6300101 TO 6300420 6.3

Tigercat 630 Skidder

Electrical, gauges and alarms

REFER TO COLOUR CODE CHART IN THIS SECTION

630-15

MACHINE SCHEMATIC DIAGRAM 5655B REV.1(SHEET 1) SERIAL NUMBERS 6300421 TO 6300440 6.4

Tigercat 630 Skidder

630-16

Electrical, gauges and alarms

MACHINE SCHEMATIC DIAGRAM 5655B REV.1 (SHEET 2) SERIAL NUMBERS 6300421 TO 6300440 6.5

Tigercat 630 Skidder

Electrical, gauges and alarms

REFER TO COLOUR CODE CHART IN THIS SECTION

630-17

MACHINE SCHEMATIC DIAGRAM 6576B REV.4 (SHEET 1) SERIAL NUMBERS 6300481 TO 6300999 6.6

Tigercat 630 Skidder

630-18

Electrical, gauges and alarms

MACHINE SCHEMATIC DIAGRAM 6576B REV.4 (SHEET 2) SERIAL NUMBERS 6300481 TO 6300999 6.7

Tigercat 630 Skidder

Electrical, gauges and alarms

Tigercat wire colour code chart applicable to all products manufactured by Tigercat Industries Inc. COLOUR Red Black White Blue Purple Tan Yellow Grey Brown Green Orange

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

FUSE AND RELAY PANEL (6300481 TO 6300999)

6.8

Tigercat 630 Skidder

Electrical, gauges and alarms

GAUGES AND ALARMS The 630 is monitored for proper operation by sensors located in the hydraulic system and on the engine. These sensors are connected to either gauges, warning lights, alarms or a combination of these devices.

To troubleshoot temperature and pressure type gauges, use an ohmmeter to test between the terminals at the back of the gauge. Refer to illustration 726B07 for reading values. If the resistance readings taken with the ohmmeter are within the range shown, the gauge is functioning properly. Faulty readings will therefore be the result of a poor sending unit.

For operation of the gauges and warning lights listed in the sensor chart below, refer to SECTION 2 of the OPERATOR'S MANUAL. The operator may sound the warning horn at any time. A back-up alarm will also sound when the machine is travelling in reverse.

726B07

SENSOR DETAILS SENSOR FUNCTION

GAUGE RANGE LIGHT

HORN

•

Engine Oil Pressure

•

Hydraulic Oil Temperature

•

Engine Coolant Temperature OHMETER TEST READINGS

TRIGGER OR RANGE INFO.

Engine coolant temp. ....... 100°F - 280°F ..... None .... None.......... Operating range 190°F-215°F (38°C) - (138°C)

Engine oil pressure ............. 0 - 100 psi ........ None .... None.............. Stop engine below 10 psi Engine hours ......................... 0 - 9999 .......... None .... None...................... Engine running Hydraulic oil temp. ............ 100°F - 240°F ..... None .... None...... Stop machine above 185°F (85°C) (38°C) - (116°C)

Volts ...................................... 8v - 18v .......... None .... None... Normal operating range 12 - 13.5 volts.

Fuel level .................................'E' - 'F' ........... None .... None................. Capacity; 86 gal.(US) Hydraulic oil - low ........................ - ................. ON ........ ON ................ 10 Gal. (38L) below Full Hydraulic oil filter bypass ............ - ................. ON .......... - ..... Return filter restriction, 50 psi or greater Pump inlet ................................... - ................. ON .......... - ....... Pump inlet vacuum above 1 inch HG. Low coolant ................................. - ................. ON .......... - ...................... Coolant level drops Transmission temp. high ............. - ................. ON .......... - ......... Transmission temp. exceeds 230°F Engine air filter clogged .............. - ................. ON .......... - ............ Air inlet vacuum above 25" H2O Parking brake engaged ............... - ................. ON .......... - ................ Pulling up on brake handle Grapple pressure (constant) ............. - ................. ON .......... - ....... "Constant pressure" switch on joystick Winch free spool engauged ............. - ................. ON .......... - ............... "Winch free" switch on dash Main pump unloading .................. - ................. ON .......... - .. "Main pump unloading valve" switch on dash Coolant temperature ................... - ................. ON ........ ON ...... Coolant temperature exceeds 215°F Engine oil pressure ..................... - ................. ON ........ ON ......... Engine oil pressure below 10psi Back-up alarm ............................. - ................... - .......... ON ................... Reverse drive pedal Horn ............................................. - ................... - .......... ON ........... Push button on steering wheel 6.9

Tigercat 630 Skidder

Electrical, gauges and alarms FRONT

HYDRAULIC OIL FILTER BYPASS SENDER (LIGHT)

•

•

PUMP INLET VACUUM SWITCH (LIGHT)

•

MAIN PUMP UNLOADING VALVE

HYDRAULIC OIL TEMPERATURE SENDER (GAUGE)

TACHOMETER PROXIMITY SWITCH

HYDRAULIC OIL TANK

ENGINE START SOLENOID RELAY

• BACK-UP ALARM (DRIVE PEDAL ACTIVATED)

•

•

HYDRAULIC OIL LEVEL SENDER (LIGHTAND HORN)

• •

ENGINE HOURS PRESSURE SENDER (GAUGE)

• • BATTERY DISCONNECT SWITCH ENGINE COOLANT TEMPERATURE SENDER (GAUGE)

ENGINE AIR FILTER VACUUM SWITCH (LIGHT)

•

•

• ENGINE OIL PRESSURE SENDER (GAUGE)

ENGINE COOLANT LEVEL SENDER (LIGHT)

•

RADIATOR

TRANSMISSION TEMPERATURE SENDER (LIGHT)

• •

BACK-UP ALARM SENDER (HORN)

•

TRANSMISSION

•

HORN (PUSH BUTTON ON STEERING WHEEL)

BATTERIES

• •

•

• FUEL LEVEL SENDER (GAUGE)

1461DIL

•

FUEL TANK(S)

•

SWITCH AND SENSOR LOCATIONS (SERIAL NUMBERS 6300101 TO 6300400) 6.10

Tigercat 630 Skidder

Electrical, gauges and alarms MAIN PUMP UNLOADING VALVE

FRONT HYDRAULIC OIL FILTER BYPASS SENDER (LIGHT) PUMP INLET VACUUM SWITCH (LIGHT) [UP TO 6300480 ONLY]

MAIN PUMP UNLOADING VALVE SWITCH (LIGHT)

•

•

ENGINE START SOLENOID RELAY

• •

HYDRAULIC OIL TANK

BACK-UP ALARM (DRIVE PEDAL ACTIVATED)

•

ENGINE AIR FILTER VACUUM SWITCH (LIGHT)

ENGINE HOURS PRESSURE SWITCH (GAUGE)

• •

ENGINE COOLANT TEMPERATURE SENDER (GAUGE)

• •

•

•

HYDRAULIC OIL TEMPERATURE SENDER (GAUGE) HYDRAULIC OIL LEVEL SENDER (LIGHT AND HORN)

• ••

•

TACHOMETER PROXIMITY SWITCH

ENGINE COOLANT LEVEL SENDER (LIGHT)

COOLANT TEMPERATURE SWITCH (LIGHT AND HORN) [6300481 & UP ONLY]

ENGINE OIL PRESSURE SENDER (LIGHT AND HORN) [63000481 & UP ONLY]

•

ELECTRIC THROTTLE ACTUATOR [6300481 & UP ONLY]

RADIATOR

• • ENGINE OIL PRESSURE SENDER (GAUGE)

BACK-UP ALARM SENDER (HORN)

BATTERIES

TRANSMISSION TEMPERATURE SENDER (LIGHT) [UP TO 6300480 ONLY]

• •

HORN (PUSH BUTTON ON STEERING WHEEL)

• •

• TRANSMISSION

•

•

BATTERY DISCONNECT SWITCH

FUEL LEVEL SENDER (GAUGE)

•

FUEL TANKS

•

•

SWITCH AND SENSOR LOCATIONS (SERIAL NUMBERS 6300421 TO 6300500) 5486BIL2

6.11

Tigercat 630 Skidder

Electrical, gauges and alarms

MAIN PUMP UNLOADING VALVE

FRONT

MAIN PUMP UNLOADING VALVE SWITCH (LIGHT)

HYDRAULIC OIL FILTER BYPASS SENDER (LIGHT)

HYDRAULIC OIL TEMPERATURE SENDER (GAUGE)

• • •

HYDRAULIC OIL TANK ENGINE AIR FILTER VACUUM SWITCH (LIGHT)

• • • •

•

•

ENGINE COOLANT LEVEL SENDER (LIGHT)

•

HYDRAULIC OIL LEVEL SENDER (LIGHT AND HORN)

• ••

ENGINE COOLANT TEMPERATURE SENDER (GAUGE)

• •

•

ENGINE START SOLENOID RELAY

RADIATOR

BATTERIES

ENGINE HOURS PRESSURE SWITCH (GAUGE) COOLANT TEMPERATURE SWITCH (LIGHT AND HORN) [6300481 & UP ONLY] ENGINE OIL PRESSURE SENDER (LIGHT AND HORN) ELECTRIC THROTTLE ACTUATOR [6300481 & UP ONLY]

• BACK-UP ALARM (DRIVE PEDAL ACTIVATED)

TACHOMETER PROXIMITY SWITCH

ENGINE OIL PRESSURE SENDER (GAUGE)

• •

BACK-UP ALARM SENDER (HORN)

• • •

•

BATTERY DISCONNECT SWITCH

TRANSMISSION

HORN (PUSH BUTTON ON STEERING WHEEL)

FUEL LEVEL SENDER (GAUGE)

• •

•

FUEL TANKS

SWITCH AND SENSOR LOCATIONS (SERIAL NUMBERS 6300501 TO 6300999) 6562BIL2

6.12

Tigercat 630 Skidder SECTION 7 - ENGINE START AND STOP OCTOBER 1999

CONTENTS - SECTION 7 CIRCUIT DESCRIPTION .................................................................................. 7.2 CIRCUIT DIAGRAM SERIAL NUMBERS 6300101 TO 6300400 .................................................... 7.5 SERIAL NUMBERS 6300401 TO 6300480 .................................................... 7.5 SERIAL NUMBERS 6300481 TO 6300999 .................................................... 7.6 DRIVE SYSTEM RELAYS DRIVE ENABLE RELAY ................................................................................. 7.2 START RELAY ............................................................................................... 7.2 ENGINE START CIRCUIT ................................................................................. 7.2 FUEL CONTROL VALVE ................................................................................... 7.4 MAIN PUMP UNLOADING VALVE .................................................................... 7.4 PARKING BRAKE SWITCH .............................................................................. 7.2 START MOTOR AND SOLENOID ..................................................................... 7.2 START SOLENOID RELAY ............................................................................... 7.3 TACHOMETER SET-UP .................................................................................... 7.7

Tigercat 630 Skidder

Engine start and stop

ENGINE START CIRCUIT

CIRCUIT DESCRIPTION

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

For schematic diagrams, showing the ENGINE START CIRCUIT, refer to pages 5 and 6 of THIS SECTION.

For engine starting and stopping procedures refer to ENGINE STARTING AND STOPPING in SECTION 2 of the OPERATOR’S MANUAL.

With the parking brake ON, the park brake switch is closed and the drive enable relay is energized through wires 6 and 11. When the key switch is turned to the START position, voltage is supplied

The engine starting circuit is controlled by the parking brake switch located on the parking brake which prevents the engine from being started when the parking brake is OFF.

DRIVE ENA BLE RELAY (#2)

•

START RELAY (#1)

•

PARKING BRAKE SWITCH

PARKING BRAKE 'ON' POSITION

21-2AA

DRIVE SYSTEM RELAYS REAR VIEW OF CONTROL PANEL SERIAL NUMBERS 6300101 TO 6300480

1466DIL5

START RELAY (#1)

• •

DRIVE ENABLE RELAY (#2)

PARKING BRAKE 'OFF' POSITION

21-3A

The engine is started by turning the key switch to the START position and then releasing it to the RUN position after the engine starts.

DRIVE SYSTEM RELAYS 6424BIL1

OFF

RUN

FRONT VIEW OF CONTROL PANEL SERIAL NUMBERS 6300481 TO 6300999

to the start circuit through wire 6, the drive enable relay and wire 9 to the start relay. Voltage is supplied through wire 23 to the coil of the start relay, which closes and supplies voltage through

START

• •• ••

SOLENOID

• 272-1

START MOTOR

IGNITION SWITCH

••

The parking brake must be ON to allow the engine to start.

If the engine stalls during operation of the vehicle, the key must be turned to the OFF position to reset before the engine can be restarted.

274-5X

7.2

START MOTOR AND SOLENOID

Tigercat 630 Skidder

Engine start and stop

6300101 TO 6300500 LOCATED ON BACK OF HYDRAULIC TANK

brake is applied, voltage is sent to the drive enable relay coil, this de-energizes the drive prevent pilot valve which removes pilot oil from the drive pedals and allows the engine to be started.

RELAY

•

Once the engine is running pilot oil is immediately available for dozer, steer, winch and grapple functions, but the parking brake must be released before pilot oil is available for the drive pedals.

190-18A

With the drive enable relay latched in the energized position (parking brake ON), the drive prevent pilot valve is not energized and pilot oil is not available to the drive foot pedals, but pilot oil is available to the dozer, steer, winch and grapple functions. These controls spring return to neutral and will not function unless the operator touches them.

START SOLENOID RELAY

6300501 TO 6300999 LOCATED BEHIND CAB LH SIDE ACCESS PANEL RELAY

••

CAUTION Do not apply pressure to these controls during the starting procedure as immediate movement of the functions will occur.

Continued on page 4 270-22A

START SOLENOID RELAY

wire 16 to the start solenoid relay, which in turn closes and supplies voltage through wire 12 to close the start solenoid contacts and supply battery power to the starter to turn the engine.

If the drive enable relay coil is not energized (parking brake OFF), voltage is not available in wire 9 and the engine cannot be started. This will prevent accidental starting of the engine when the parking brake is not applied. When the parking DRIVE PREVENT PILOT VALVE

••

PILOT MANIFOLD 190-21A

UNDER CAB 6300101 TO 6300400

DRIVE PREVENT PILOT VALVE

• DRIVE PREVENT VALVE 190-21A

UNDER CAB 6300401 TO 6300999

7.3

Tigercat 630 Skidder

Engine start and stop

Continued from page 3

FUEL CONTROL VALVE

MAIN PUMP UNLOADING VALVE (SERIAL NUMBERS 6300401 TO 6300999)

There is a fuel control valve on the engine that is activated when the key is turned on. It has a pull in coil that is activated by the start solenoid through wire 54 during the start procedure and a holding coil activated through wire 13 during the start procedure and when the engine is running.

To relieve the load on the engine during start-up, the main pump is destroked at a low pressure by the main pump unloading valve. It is energized through wire 35, when the main pump unloading valve switch (on the instrument panel) is in the ON position during engine starting.

FUEL CONTROL VALVE AND SOLENOID

RIGHT SIDE OF ENGINE

•

•

• FUEL CONTROL VALVE

190-19A

SOLENOID

MAIN PUMP UNLOADING VALVE (SERIAL NUMBERS 6300101 TO 6300400)

••

To relieve the load on the engine during start-up, the main pump is destroked at a low pressure by the main pump unloading valve. It is energized by the start solenoid relay through wire 35, during engine starting.

TO EARLIER MAIN MACHINES PUMP LOCATED ON FRONT CHASSIS BELOW PUMPS

••

TO MULTIFUNCTION VALVE LATER MACHINES LOCATED ON RH SIDE OF FRONT CHASSIS

TO MULTIFUNCTION VALVE 274-7

SOLENOID

•• •• 188-18

•

TO MAIN PUMP

MAIN PUMP UNLOADING VALVE

7.4

MAIN PUMP UNLOADING VALVE

Tigercat 630 Skidder

630-11

630-20

Engine start and stop

ENGINE START CIRCUIT SERIAL NUMBERS 6300101 TO 6300400

ENGINE START CIRCUIT SERIAL NUMBERS 6300401 TO 6300480 7.5

Tigercat 630 Skidder

630-21

Engine start and stop

ENGINE START CIRCUIT SERIAL NUMBERS 6300481 TO 6300999

7.6

Tigercat 630 Skidder

Engine start and stop

TACHOMETER SET-UP: NOTE: A calibrated "electronic photo tachometer" is required for this procedure.

1.

Set the parking brake ON, lower the grapple and dozer to the ground and turn off the engine.

2.

Remove the instrument panel to provide access to the back of the tachometer on the machine.

3.

The BLACK knob (screw driver slot) on the back of the tachometer should be set to 6. (the choice are 4-6-8)

4.

Place a piece of reflecting tape on the damper pulley. (on the front of the engine by the fan)

5.

Using an electronic photo tachometer on the damper pulley, adjust the throttle control to give an engine speed of 2200 rpm on the photo tachometer.

6.

Set the tachometer on the instrument panel to 2200 rpm using an allen key in the hole on the back of the tachometer.

7.

Reduce the engine rpm to IDLE and then back to 2200 rpm, using the photo tachometer.

8.

Check the instrument panel tachometer for 2200 rpm. Readjust if necessary.

9.

Turn off the engine and replace the instrument panel, being careful not to pinch the wiring on the back of the panel.

7.7

Tigercat 630 Skidder

Engine start and stop

7.8

Tigercat 630 Skidder SECTION 8 - DRIVE CONTENTS - SECTION 8

NOVEMBER 1999

AXLES ...........................................................................................................................................

CAPACITIES ..............................................................................................................................

DIFFERENTIAL AND DIFFERENTIAL LOCKS ..........................................................................

DRAINING THE AXLES .............................................................................................................

FILLING THE AXLES .................................................................................................................

LUBRICATION ...........................................................................................................................

OIL CAPACITIES .......................................................................................................................

PLANETARY FINAL DRIVE .......................................................................................................

SERVICE BRAKES (FRONT AXLE ONLY) BRAKE BLEEDING ................................................................................................................

BRAKE LINING INSPECTION ...............................................................................................

SERVICING BRAKES ............................................................................................................

8.35 8.37 8.36 8.37 8.37 8.37 8.37 8.35 8.36 8.36 8.36

DRIVE SYSTEM DRIVE CIRCUIT (6300101 TO 6300400) ................................................................................... 8.10 DRIVE CIRCUIT (6300401 TO 6300999) ................................................................................... 8.22 DRIVE FOOT CONTROL VALVE ................................................................................................. 8.7 DRIVE MOTOR DESCRIPTION .................................................................................................. 8.6 DRIVE MOTOR SCREW ADJUSTMENTS (6300101 TO 6300400) ........................................... 8.16 DRIVE MOTOR SCREW ADJUSTMENTS (6300401 TO 6300999) ........................................... 8.28 DRIVE PREVENT VALVE (6300101 TO 6300400) ....................................................................... 8.7 DRIVE PREVENT VALVE (6300401 TO 6300999 ........................................................................ 8.8 DRIVE PUMP DESCRIPTION ..................................................................................................... 8.4 DRIVE PUMP PRESSURE SETTINGS (6300101 TO 6300400) ................................................ 8.14 DRIVE PUMP PRESSURE SETTINGS (6300401 TO 6300999) ................................................ 8.26 DRIVE SYSTEM DESCRIPTION ................................................................................................. 8.2 HYDRAULIC SET-UP PROCEDURE (6300101 TO 6300400) DRIVE MOTOR PRESSURE ADJUSTMENT ........................................................................ 8.15 DRIVE PUMP PRESSURE ADJUSTMENT ........................................................................... 8.13 MOTOR BEGIN OF DISPLACEMENT CONTROL PRESSURE ............................................ 8.17 MOTOR MINIMUM DISPLACEMENT ADJUSTMENT ........................................................... 8.16 MOTOR PRESSURE OVERRIDE ADJUSTMENT (P.O.R.) ................................................... 8.19 HYDRAULIC SET-UP PROCEDURE (6300401 TO 6300999) DRIVE MOTOR PRESSURE ADJUSTMENT ........................................................................ 8.28 DRIVE PUMP PRESSURE ADJUSTMENT ........................................................................... 8.25 MOTOR BEGIN OF DISPLACEMENT CONTROL PRESSURE ............................................ 8.29 MOTOR MINIMUM DISPLACEMENT ADJUSTMENT ........................................................... 8.28 MOTOR PRESSURE OVERRIDE ADJUSTMENT (P.O.R.) ................................................... 8.31 HYDRAULIC OIL HEATING PROCEDURE ..................................................................................... 8.9 TEST DRIVE (6300101 TO 6300400) BEGIN OF DISPLACEMENT CONTROL PRESSURE ..............................................................

DIFFERENTIAL LOCKS ............................................................................................................

HORSEPOWER .........................................................................................................................

MOTOR PRESSURE OVERRIDE (POR) ..................................................................................

STEERING OPERATION ...........................................................................................................

TEST DRIVE (6300401 TO 6300999) BEGIN OF DISPLACEMENT CONTROL PRESSURE ..............................................................

DIFFERENTIAL LOCKS ............................................................................................................

HORSEPOWER .........................................................................................................................

MOTOR PRESSURE OVERRIDE (POR) ..................................................................................

STEERING OPERATION ...........................................................................................................

TRANSMISSION ...........................................................................................................................

8.11 8.12 8.12 8.11 8.12 8.23 8.24 8.24 8.23 8.24 8.34

WHEEL INSTALLATION ................................................................................................................ 8.37 TAPERED ASSEMBLY STUD .................................................................................................... 8.37

Tigercat 630 Skidder

Drive

DRIVE SYSTEM DESCRIPTION

The drive pilot foot pedal control valve also directs pilot oil to the drive motor displacement controllers, that control the speed at which the motors turn with a given amount of fluid being pumped to them. The motor speed changes proportionally to the position of the drive foot pedal and the rate does not depend on the direction of travel.

REXROTH PUMP AND MOTOR The hydraulic system delivers engine power to the drive train by means of hydraulic oil. An axial piston variable displacement pump (with an internal gear charge pump), is mounted on the pump drive gearbox. This pump provides hydraulic oil in a closed loop system to two variable displacement (axial piston, bent axis) motors which are mounted to the transmission.

The direction of rotation of the motor depends upon the direction of fluid flow from the pump. The

The charge pump provides make up oil for the “loop”, cooling oil, and pilot oil for the hydraulic controls. The oil enters the loop at the low pressure side of the pump.

P.O.R. VALVE • 4 MM ALLEN KEY • 13 MM WRENCH

With the parking brake in the OFF position, the DRIVE foot pedal control valve in the cab directs pilot oil to move the pump swashplate. The angle of the swashplate controls the amount of fluid being pumped, as well as the direction of flow in the loop. The pump provides oil at a rate that is proportional to the position of the drive foot pedal and the rate does not depend on the direction of travel.

'B' PORT RELIEF 5 MM ALLEN KEY 17 MM WRENCH

••

188-9

•

GAUGE TEST PORT 'MB' • PORT SIZE - 04 ORB

••

'TEE' GAUGE TEST PORT (G) • PORT SIZE - 04 JIC CHARGE PRESS. RELIEF • 5 MM ALLEN KEY • 17 MM WRENCH

• • • GAUGE TEST PORT 'M A' • PORT SIZE - 04 ORB

'A' PORT RELIEF

188-1

••

5 MM ALLEN KEY 17 MM WRENCH

DRIVE PUMP 8.2

DRIVE PUMP

Tigercat 630 Skidder

Drive

rotation speed of the motor output shaft is dependent primarily on the position of the drive foot pedal control valve, however this can be overridden by the load on the output shaft. Once the load on output shaft reaches a certain level, if the load rises further the RPM will reduce. The RPM reduces automatically at a rate that maintains maximum horsepower to the output shaft. The output shaft is connected to the transmission, which provides power to both the front and rear wheels.

DRIVE CIRCUIT VARIATIONS

A limit switch (earlier machines)/proximity switch (later machines) is attached to the parking brake lever housing. When the brake lever is in the ON position the limit/proximity switch contacts CLOSE, energizing the drive enable relay, deenergizing the drive prevent valve to prevent the drive foot pedal control valve from operating.

LATER MACHINES

Two variations of the drive circuit hydraulic layout have been used on the 630 Skidder. Please refer carefully to the appropriate information in THIS SECTION for each machine serial number.

Separate procedures, photos and diagrams can be found for each drive circuit hydraulic layout.

EARLY MACHINES Serial numbers 6300101 to 6300400

Serial numbers 6300401 to 6300999

When the brake lever is in the fully OFF position and the contacts on the switch are OPEN the drive enable relay is de-energized, energizing the drive prevent valve and allowing the foot pedal control valve to operate.

This circuit prevents the machine from being driven when the parking brake is ON.

8.3

Tigercat 630 Skidder

Drive

HYDROSTATIC DRIVE PUMP

The volume and direction of oil flow from the pump is controlled by the angle of the pumps swashplate. When the swashplate is at its maximum displacement angle the pump will produce full flow. As the angle decreases so does the flow until there is no flow at an angle of 0°. Traversing the swashplate through the neutral

Hydraulic oil for the hydrostatic drive motor is supplied by an axial piston variable displacement pump with an internal gear type charge pump.

CHARGE PRESS. FILTER

••

••

DOUBLE ELEMENT FILTERS

TO MOTORS

TO MOTORS

P.O.R. VALVE

DRIVE PUMP

STEER, DOZER, GRAPPLE PUMP

'B' PORT RELIEF

FROM DRIVE FOOT CONTROL VALVE

••

•

CHARGE PUMP RELIEF

TO PILOT MANIFOLD (P2)

FORW.

REV

SWASH PLATE CONTROL VALVE

•• COOLING PUMP

PUMPS

284-21A

'A' PORT RELIEF

CONTROL CYLINDER

The pump is mounted at the top right of the pump drive gearbox. A splined adapter connects the pump shaft to the pump drive gearbox output shaft.

This variable displacement pump is of swashplate design for use in closed loop hydrostatic transmissions such as used on this machine. All the necessary valves and the charge pump are built into the unit.

PRESSURE FILTER (CHARGE PRESSURE OUTLET) AP18-1

DRIVE SHAFT

PORT 'B'

SWASHPLATE CONTROL VALVE

CONTROL CYLINDER

GAUGE TEST PORT 'A'

GAUGE TEST PORT 'B' CHARGE PUMP

DRIVE PUMP SCHEMATIC (REXROTH)

CHARGE PUMP

PRESSURE OVERRIDE VALVE (P.O.R.)

CHARGE PUMP RELIEF 'B' PORT RELIEF

• •

•

PORT 'B'

•

•

• • •

•

•

•• •

AP008-1

AP008-2

• PORT 'A'

SWASHPLATE

SPLINED SHAFT

CROSS SECTION THRU' PORT PLATE BODY

PORT 'A'

DRIVE PUMP (REXROTH) 8.4

• 'A' PORT RELIEF

Tigercat 630 Skidder

Drive

position steplessly reverses the direction of flow through the pump providing a FORWARD or REVERSE condition.

Two relief valves ( 'A' and 'B' ports) and a pressure override valve (P.O.R.) in the pump, control or regulate system pressure.

The swashplate angle is controlled by pilot oil pressure from the charge pump. When no pilot oil is supplied, i.e., neither drive pedal depressed, the swashplate is in its neutral position and no oil is pumped. Make-up oil or charge pump oil is instead returned to tank via the low pressure charge pump relief valve.

The P.O.R. valve limits the system pressure by sensing high pressure and de-stroking the swashplate, thereby reducing pump flow to the motor. The function of the P.O.R. valve is to protect the system from excessive pressures.

The two high pressure relief valves 'A' and 'B' are intended to act as a pressure limiting safety device in case the P.O.R. valve malfunctions or does not react quickly enough in response to high pressure spikes.

The charge pump, mounted on the back of the drive pump provides "make up" oil to the low pressure side of the "closed loop circuit" via internal ports in the pump. It also provides pilot oil to the DRIVE control valve (foot pedals).

Because the charge pump oil is being continuously drawn from and returned to the hydraulic tank, it also functions as a cooling oil.

The charge pump circuit has its own relief valve. It allows oil from the charge pump circuit to flow to tank when the preset pressure is reached.

The pressure override valve, the 'A' and 'B' port relief valves and the charge pump relief valve are adjusted in the same manner. Using an allen wrench and a box wrench, loosen the locknut.

Turning the adjusting screw counter-clockwise reduces the pressure setting, while turning clockwise increases the pressure setting.

The DRIVE control valve sends a pressure signal to the pump to shift the spool in the pump's swashplate control valve which in turn directs oil from the charge pump to the control cylinder to change the angle of the swashplate.

The distance the swashplate moves and therefore the speed of the vehicle is directly proportional to the position of the drive foot pedal(s).

For pressure setting procedures see DRIVE SYSTEM PRESSURE SETTINGS (REXROTH).

8.5

Tigercat 630 Skidder HYDROSTATIC DRIVE MOTOR

Drive

Two motors are used to drive the skidder. They are mounted to the input side of the transmission. A splined coupling connects the motor shaft to the transmission input shaft.

The motor is an axial piston, variable displacement type. It forms a closed loop circuit with the pump.

High pressure oil from the pump enters the motor via port 'A' or port 'B', depending on the direction of travel. The oil is directed to the back of a set of pistons in the motor's rotary group. The pistons push against the back of the drive shaft at an angle causing it to rotate.

The spool in the P.O.R. valve is moved by system pressure from the high pressure side of the loop.

When the P.O.R. spool moves as a result of high pressures it reduces the pressure directed to the displacement control cylinder. The reduced pressure will cause the displacement control piston to move. The point at which the displacement control spool begins to move is known as "begin of regulation set point" or "pressure override set point".

The MOTOR P.O.R. set point must be correctly set for the system to function properly. SEE REXROTH HYDROSTATIC DRIVE MOTOR PRESSURE SETTINGS in this section.

The angle of the pistons relative to the drive shaft determine the speed of the motor and the available torque. Reducing the angle provides increased speed with less torque. Increasing the angle will reduce the speed and provide more torque.

The angle of the pistons is variable and is changed by an internal control cylinder that receives high pressure oil via the MOTORS' pressure override valve (P.O.R.) and a displacement control spool.

The displacement control spool is operated by pilot pressure from the forward and reverse foot pedals.

When sufficient pressure from the pedals is directed to the spool, it shifts against a spring and directs oil past the P.O.R. valve to the displacement control cylinder thus decreasing the displacement of the motor. Removal of the pressure signal from the foot pedals will cause the displacement control spool to return to the neutral position, shutting off the pressure to the displacement control cylinder thus increasing displacment to maximum.

FROM PUMP AQ010-1

MINIMUM DISPLACEMENT ADJUSTING SCREW

•

DRIVE SHAFT

DRIVE MOTOR SCHEMATIC

P.O.R. ADJUSTING SCREW

•

•

FROM PUMP

• PORT 'X'

BEGIN OF DISPLACEMENT ADJUSTING SCREW

•

PORT 'B'

•

PORT 'A'

'A'

AQ010-5Y

AQ010-1

PORT 'M1'

ROTATING GROUP

•

•

FLUSHING VALVE

DRIVE MOTOR ~ REXROTH (160CC SIZE) 8.6

VIEW 'A'

Tigercat 630 Skidder

Drive

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

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

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

A flushing valve is incorporated into the motor.

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

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

1

2

P

DRIVE FOOT CONTROL VALVE

AU004

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

•

• •

4

•

2

3

•

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

Flow is directly proportional to the operator position of the foot pedal and the regulating spring characteristic.

1

•

• • •

•

8

'P' PORT

AU013-1

WORK PORTS 1, OR 2

SPOOL ARRANGEMENT

DRIVE PILOT VALVE

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

Both this foot control valve and the joystick valve use a similar spool arrangement.

5

T

AU013-2

Operated by foot, this valve directs pilot pressure to the swashplate control valve on the drive pump to drive the machine either forward or reverse OPERATING DESCRIPTION In the neutral position the foot pedal is held centered by return spring (4).

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

8.7

Tigercat 630 Skidder DRIVE PREVENT VALVE

Drive DRIVE PREVENT VALVE

(EARLY MACHINES - 6300101 TO 6300400)

(LATER MACHINES - 6300401 TO 6300999)

On early machines, the drive prevent valve is mounted on the pilot manifold located under the cab. This solenoid operated spool valve prevents the machine from being driven either forward or in reverse when the parking brake is ON.

On later machines, the drive prevent valve is located under the cab. This solenoid operated spool valve prevents the machine from being driven either forward or in reverse when the parking brake is ON.

OPERATING DESCRIPTION

OPERATING DESCRIPTION

When the solenoid valve is de-energized (parking brake ON) the spool connects the pilot pressure line on the foot control to tank. This prevents the foot pedal from supplying pilot pressure to the drive pump displacement controller.

When the solenoid valve is de-energized (parking brake ON) the spool connects the pilot pressure line on the foot control to tank. This prevents the foot pedal from supplying pilot pressure to the drive pump displacement controller.

When the solenoid valve is energized (parking brake OFF), the spool shifts and connects pilot pressure to the foot control. This allows the foot control (forward or reverse) to send pilot pressure to the drive pump displacement controller, causing the hydrostatic drive pump to provide flow to the drive motors.

When the solenoid valve is energized (parking brake OFF), the spool shifts and connects pilot pressure to the foot control. This allows the foot control (forward or reverse) to send pilot pressure to the drive pump displacement controller, causing the hydrostatic drive pump to provide flow to the drive motors.

SOLENOID AND CONNECTOR

90016-2

• • C1 T SPOOL SECTION

•

PORT 'P1' PILOT PRESSURE

PILOT MANIFOLD

90016-1

P1

•

PORT 'C1' TO FOOT PEDAL

•

DRIVE PREVENT VALVE

270-25A

TANK PORT 'T'

SOLENOID AND CONNECTOR

DRIVE PREVENT VALVE

90016-2

• •

(EARLY MACHINES - 6300101 TO 6300400) C B SPOOL SECTION

•

PORT 'A' PILOT PRESSURE PORT 'C' TO FOOT PEDAL

•

TANK PORT 'B'

DRIVE PREVENT VALVE AT022

8.8

(LATER MACHINES - 6300401 TO 6300999)

A

Tigercat 630 Skidder

Drive

HYDRAULIC OIL HEATING PROCEDURE There is a specific procedure to heat up the hydraulic oil in the machine in preparation for setting up Hydraulic pressures.

1.

Set the parking brake ON, grapple/dozer down and the engine off.

2.

Connect a 0-5000 psi gauge to the 'P3' test port. (Earlier machines use EITHER the grapple control valve or the dozer control valve test port).

3.

Start the engine (full throttle). Place a sheet of cardboard in front of the heat exchangers, between the cab and engine. Fold back the rubber baffle on the side to allow cooling air to enter the engine radiator, to prevent overheating of the engine.

4.

Adjust the port relief valve to 1500 psi, on EITHER the dozer blade up or the grapple

WARNING Do not exceed 1500 psi, or overheating and damage of the valve will result. open.

5.

Operate EITHER the dozer blade up or grapple open function (which ever you selected) and HOLD in the operating position, while monitoring the ENGINE coolant temperature and the HYDRAULIC oil temperature on the panel gauges. This should be done at full throttle and will take 3

WARNING DO NOT leave the machine while heating the oil, as overheating of engine or oil can cause serious damage. to 9 minutes.

6.

Ensure that the hydraulic oil temperature is between 120F and 140F.

7.

Once the hydraulic oil is up to temperature, proceed to required hydraulic set-up procedure.

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

8.9

Tigercat 630 Skidder

630-07

Drive

DRIVE CIRCUIT - EARLY MACHINES SERIAL NUMBERS 6300101 TO 6300400 8.10

Tigercat 630 Skidder

Drive

TEST DRIVE GAUGE TEST PORT 'X' • PORT SIZE - 04 ORB

(EARLY MACHINES - 6300101 TO 63000400) The test drive will verify the following: 1.

Motor begin of displacement control pressure: 145 - 155 psi.

2.

Motor pressure override (P.O.R.): 4400-4450 psi and (half of ‘Mb’) - 2200 - 2225 psi.

3.

Steering check; slow and fast.

4.

Front and rear differential lock functions.

5.

Horsepower/engine stall test.

••

188-15

Install three 0-10,000 psi gauges on ‘M1’ of each MOTOR and ‘Mb’ of the HYDROSTATIC PUMP. Install 0-1,000 psi gauge on ‘X’ of MOTORS.

DRIVE MOTORS

Fasten your seat belt and move the machine to a suitable test area, where it can be safely driven at full speed for approximately 150 feet. Grapple UP, CLOSED and ROTATED TO CENTER. Dozer blade UP.

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

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

GAUGE TEST PORT 'M1 • PORT SIZE - 04 ORB

GAUGE TEST PORT 'M1' • PORT SIZE - 04 ORB

• 189-4

BEGIN OF DISPLACEMENT CONTROL PRESSURE:

A.

Set throttle control to FULL (2450 RPM.).

B.

Drive the machine FORWARD, using the foot pedal to get 150 psi at ‘X’ on the MOTORS. The foot brakes may have to be applied to create approximately 2000 psi at ‘Mb’ on the PUMP.

• 189-6

RH DRIVE MOTOR

1.

C.

LH DRIVE MOTOR GAUGE TEST PORT 'M B' • PORT SIZE - 04 ORB

••

While doing the above, observe the TWO ‘M1’ gauges on the MOTORS and adjust forward foot pedal, up or down until a reading of 1000 psi (half of ‘Mb’) just starts to appear on both ‘M1’ gauges. Read the ‘X’ pressure gauge which is showing the begin of displacement pressure and it should be 145 155 psi. Both motors (‘M1’ gauges) should rise to 1000 psi within the 145 - 155 psi range on the ‘X’ gauges, if the set-up is correct.

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

188-1

MAIN DRIVE PUMP 8.11

2.

MOTOR PRESSURE OVERRIDE (P.O.R.):

A.

Set throttle control to FULL.

B.

Drive the machine FORWARD in a straight line with FULL DRIVE PEDAL. The ‘X’ gauge should show 450 psi (charge pressure).

Apply foot brake to slow machine down to Continued on page 12

Tigercat 630 Skidder

Drive

Continued from page 11

B.

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

Rear wheels should still rotate.

C.

Turn front differential lock switch OFF.

D.

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

5.

HORSEPOWER

A.

To check engine horsepower it is neccessary to temporarily reset dozer pressure to 1500 psi.

approximately half maximum speed but NO SLOWER than half speed.

C.

While doing the above, observe the pressure at ‘Mb’. It should read the P.O.R. setting of 4400-4450 psi. Also read the pressure at ‘M1’ on both MOTORS and it should be half of ‘Mb’. 2200-2225 psi. The engine should lug down to 2150-2200 rpm during this test.

If the rpm stays above 2200 rpm during the test, check the hydrostatic pump.

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

3.

STEERING OPERATION:

B.

A.

Disengage the parking brake, turn OFF both front and rear differential locks, NO foot brake applied and throttle control set to FULL. Turn the steering wheel completely one way until it hits the stop.

Park machine on level ground, set parking brake ON, grapple DOWN, dozer DOWN and shut off the engine.

C.

Connect a 0-5000 psi gauge to the ‘P3’ port.

D.

Turn the steering wheel the opposite way, as SLOWLY as possible, until it hits the end stop. This should take 7 1/2 to 8 turns of the wheel.

Ensure that the hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in this SECTION.

E.

Start the engine, hold down the brake pedal and set the throttle to HIGH IDLE (24502460 rpm).

F.

With the aid of an assistant operate the dozer UP control and hold pressure.

G.

Adjust the dozer UP, port relief valve to give a reading of 1500 psi on the gauge.

H.

Turn off the engine, remove gauges, reinstall plugs on the test ports.

I.

Start the engine, set throttle control to FULL (2450 rpm). Set parking brake OFF, grapple UP and dozer UP.

J.

Drive the machine FORWARD in a straight line with FULL DRIVE PEDAL and dozer blade control lever FULLY BACK to raise and hold the dozer blade. Apply service brakes to slow machine down to approximately half maximum speed but NO SLOWER than half speed.

B.

C.

Turn the wheel back SLOWLY to the other end stop, very slowly to verify the 7 1/2 to 8 turns.

D.

Turn the wheel back to the other end stop, as FAST as possible. Resistance to turning the wheel will be felt during this operation.

This should take 3 1/2 to 4 turns of the wheel.

E.

Turn the wheel back to the other end stop, as FAST as possible to verify the 3 1/2 to 4 turns from one stop to the other.

F.

If these values are not obtained, check the priority valve and/or steering control unit.

For additional information on the steering system refer to SECTION 11 of THIS MANUAL.

4.

DIFFERENTIAL LOCKS

K.

A.

Bring the machine to a full stop, set throttle to IDLE, ensure that both front and rear differential locks are turned OFF. Steer the machine without depressing the drive pedal.

While doing the above, observe the engine rpm. The engine should lug down to between 1500 rpm and 1700 rpm and should not stall.

L.

IMPORTANT: Dozer pressures must be reset to normal levels after this test. See PRESSURE SETTINGS PROCEDURE in SECTION 14 of the SERVICE MANUAL.

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

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

8.12

Tigercat 630 Skidder

Drive

DRIVE PUMP PRESSURE SETTINGS AND ADJUSTMENTS

3.

(EARLY MACHINES - 6300101 TO 6300400)

IMPORTANT

Connect a 0-10,000 psi gauge to port ‘Mb’ and ‘Ma’ on the hydrostatic drive pump, and a 0-1000 psi gauge to the tee connection from port ‘G’ on the hydrostatic drive pump.

Also connect a 0-1000 psi gauge on the ‘X’ port (common connection) of the motors.

The adjustment or set-up procedure is a series of steps that must be done in a proper sequence to achieve optimum performance from the machine. Any deviation from the procedures could present a safety hazard, damage components and/or affect the operation of the machine.

GAUGE TEST PORT 'X' • PORT SIZE - 04 ORB

•• •

Also refer to Chart 1 - DRIVE PUMP PRESSURE SETTINGS in THIS SECTION.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

NOTE: Relief valves are set by loosening the locknut and turning the adjusting screw OUT (counter-clockwise) to reduce the pressure setting and IN (clockwise) to increase the pressure setting.

1.

5.

Set parking brake ON, lower grapple and dozer and shut off the engine.

Start the engine, raise to FULL throttle (2450 - 2460 rpm) and set the charge pressure relief valve on the pump to 450 460 psi (0 - 1000 psi gauge at ‘G’ port).

CAUTION Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

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

2.

DRIVE MOTORS Disconnect parking brake switch power wire from the switch.

188-15

4.

6.

Turn both of the high pressure relief valve adjusting screws (A) and (B) on the PUMP to an ‘X’ dimension of 3/32” to 1/8” (0.094" 0.125") (2.38mm - 3.18mm) above the locknut and lock down.

7.

Turn the PUMP P.O.R. to an ‘X’ dimension of 5/8" to 21/32”(.625-.656”) (15.88-16.67mm) above the locknut and lock down.

Adjust auxiliary brake set-up calliper to 70 lbf/ft., to lock the rotating Brake disc.

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

'X'

•• 188-10

AUXILIARY BRAKE SET-UP CALLIPER DIM X

8.13

TYPICAL 'X' DIMENSION FOR MAIN RELIEF AND P.O.R. VALVES Continued on page 14

Tigercat 630 Skidder

Drive

Continued from page 13

8.

With the aid of an assistant, hold down the brake pedal, and while fully depressing the REVERSE foot pedal, set the pump P.O.R. to 4450 psi. @ full throttle on the ‘Ma’ gauge.

9.

To set the drive pump port reliefs (reverse, ‘Ma’ and forward, ‘Mb’), it is ALSO necessary to temporarily achieve a 150-155 psi

•• • REVERSE LIMITING SCREW

FORWARD LIMITING SCREW

pressure reading at the ‘X’ port on the hydrostatic MOTORS using both the REVERSE drive and FORWARD drive pedals.

10. Adjust the REVERSE drive pedal stroke limiting screw (located under pedal) UPWARDS to limit the stroke of the pedal.

With the aid of an assistant, hold down the brake pedal and while fully depressing the REVERSE foot pedal, observe the pressure reading at the MOTOR ‘X’ port. It must read 150-155 psi @ full throttle for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct. Repeat for forward drive pedal.

11. Turn the pump P.O.R. adjusting screw in exactly 2 1/2 turns.

FORWARD AND REVERSE DRIVE PEDALS 189-10

Chart 1 - DRIVE PUMP PRESSURE SETTINGS MACHINE

PUMP

P.O.R. (FOR. AND REV.)

MAIN RELIEFS (FOR. AND REV.)

CHARGE PRESSURE

MOTOR

630

AP018 (125CC)

6200 - 6250 PSI @ 2450-2460 RPM

6850-6900 PSI @ 2450-2460 RPM

450-460 PSI @ 2450-2460 RPM

AQ010 (160 CC)

'B' PORT RELIEF 5 MM ALLEN KEY 17 MM WRENCH ‘X’ DIMENSION = è 3/32” - 1/8” OR: è (0.094" - 0.125") è (2.38mm - 3.18mm)

P.O.R. VALVE ‘X’ DIMENSION = è 5/8"- 21/32” OR: è (.625-.656”) è (15.88-16.67MM) • 4 MM ALLEN KEY • 13 MM WRENCH

•

•• GAUGE TEST PORT 'MB' • PORT SIZE - 04 ORB

•• 'TEE' GAUGE TEST PORT (G) • PORT SIZE - 04 JIC

188-9

PUMP P.O.R. VALVE

CHARGE PRESS. RELIEF • 5 MM ALLEN KEY • 17 MM WRENCH

• • • GAUGE TEST PORT 'MA' • PORT SIZE - 04 ORB

188-1

•• MAIN DRIVE PUMP ~ REXROTH 8.14

'A' PORT RELIEF ‘X’ DIMENSION = è 3/32” - 1/8” OR: è (0.094" - 0.125") è (2.38mm - 3.18mm) 5 MM ALLEN KEY 17 MM WRENCH

Tigercat 630 Skidder

Drive

12. With the aid of an assistant, hold down the brake pedal, and while fully depressing the

16. Set the parking brake ON, and shut off the engine.

17. Remove all pressure gauges and reinstall all plugs and caps.

CAUTION The machine should not be able to move while the brake pedal is depressed.

CAUTION Do NOT adjust the drive pedal stroke limiting screw IN any further than the minimum required to achieve 450-460 psi (the same value as charge pressure). Damage to the foot pedal can occur if the pedal is allowed to stroke more than is required.

WARNING Do not permit high pressure relief valves to operate for periods longer than 5 - 10 seconds as this will cause excessive heating of the hydraulic fluid and damage to the valve.

18. Reconnect the PARK BRAKE SWITCH POWER WIRE to the switch.

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

Adjustments are made during the time the pedal is pressed.

REVERSE foot pedal, set the port ‘A’ relief valve (‘Ma’) to 6850 - 6900 psi @ full throttle.

19. Re-adjust the auxiliary set-up calliper to its ORIGINAL POSITION (loose and locked with a cotter pin) using a wrench to back-off the screw adjustment. Friction between the brake calliper and the rotating brake disc can cause a fire.

SUMMARY: The settings must be made in the order shown.

13. With the aid of an assistant, hold down the brake pedal, and while fully depressing the FORWARD foot pedal, set the port ‘B’ relief valve (‘Mb’) to 6850 - 6900 psi @ full throttle.

14. With the aid of an assistant, hold down the brake pedal, and while fully depressing the REVERSE foot pedal, reset the pump pressure override adjustment (P.O.R.) to 6200 - 6250 psi @ full throttle on the ‘Ma’ gauge.

15. Re-adjust the reverse drive pedal stroke limiting screw to change the stroke of the pedal and the pressure at the MOTOR ‘X’ port. With the aid of an assistant, hold down the brake pedal and while fully depressing the reverse foot pedal, observe the pressure reading at the ‘X’ port. It must read 450-460 psi @ full throttle (the same value as charge pressure) for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct.

Repeat for forward drive pedal stroke limiting screw.

8.15

1.

Adjust charge pressure to 450-460 @ full throttle

2.

Turn BOTH pump mains screws to ‘X’ dimension above locknut.

3.

Turn pump P.O.R. to ‘X’ dimension above locknut.

4.

Set pump P.O.R. to 4450 @ full throttle.

5.

Adjust forward and reverse pedals to 150155 @ full throttle.

6.

Turn P.O.R. screw IN exactly 2 1/2 turns.

7.

Adjust BOTH main relief valves to 6850-6900 @ full throttle.

8.

Adjust pump P.O.R. to 6200-6250 @ full throttle.

9.

Adjust forward and reverse pedals to 450460 @ full throttle.

Tigercat 630 Skidder

Drive

DRIVE MOTOR PRESSURE SETTINGS AND ADJUSTMENTS

A.

(EARLY MACHINES - 6300101 TO 6300400)

MOTOR MINIMUM DISPLACEMENT ADJUSTMENT

To set the hydrostatic drive motor pressures and speeds, the following procedure must be performed in the order shown.

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

A.

Set the motor minimum displacement.

Perform this procedure on BOTH MOTORS..

B.

Set the motor begin of displacement control pressure.

1.

C.

Set the motor pressure override.

Park machine on level ground, lower grapple and dozer and set parking brake ON. Install articulation lock pin and stop engine

IMPORTANT WARNING

The adjustment or set-up procedure is a series of steps that must be done in a proper sequence to achieve optimum performance from the machine. Any deviation from the procedures could present a safety hazard, damage components and/or affect the operation of the machine. All adjustments must be performed on BOTH MOTORS.

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

2.

IMPORTANT

Remove the minimum displacement adjusting screw (largest screw) from the top of motor housing and measure its length.

• When installing a new or rebuilt motor, ensure minimum displacement screw is set correctly.

•

• Improper adjustment of min. displacement adjusting screw can result in motor failure due to overspeeding.

• MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

• It may be necessary to verify the length of adjusting screw used by removing and measuring the screw.

(SOME HOSES REMOVED FOR CLARITY) 141-6A

• Use Chart 2 - Drive Motor Screw Adjustments.

MINIMUM DISPLACEMENT ADJUSTING SCREW

DRIVE MOTOR (R.H. SHOWN)

WARNING On machine serial numbers 6300201 to 6300210 adjustment of the hydrostatic drive motors requires working under the cab with it partially tilted. Always use the CAB TILT SAFETY STRUT. Never work beneath any structure supported with hydraulics. See cab tilt instructions in the OPERATOR'S MANUAL for proper operation.

Chart 2 - DRIVE MOTOR SCREW ADJUSTMENTS MACHINE

MOTOR

BEGIN OF DISPLACEMENT

630

AQ010 (160 CC)

2250 PSI @ 2450-2460 RPM

"X" DIMENSION** TOP OF SCREW TO TOP OF NUT 6 MM (0.23") ***16 MM (0.62") 26 MM (1.01")

*LENGTH OF ADJUSTING SCREW M12 X 80 MM (3.1") M12 X 90 MM (3.5") M12 X 100 MM (3.9")

PUMP

AP018 (125 CC)

* NOTE: ALWAYS CHECK OVERALL LENGTH OF ADJUSTING SCREW BEFORE SETTING THE "X" DIMENSION ON A NEW DRIVE MOTOR **NOTE: THIS IS A SENSITIVE ADJUSTMENT, SIGNIFICANT CHANGES IN SPEED WILL OCCUR WITH ONLY A SMALL MOVEMENT OF THE ADJUSTING SCREW. IT IS IMPORTANT THAT THIS DIMENSION BE WITHIN THE SPECIFIED TOLERANCE: "X" = +0MM/-1MM (+0"/-0.031") *** INDICATES THE ADJUSTING SCREW CUSTOMARILY INSTALLED IN A NEW UNIT

8.16

Tigercat 630 Skidder 3.

Drive

Reinstall the minimum displacement adjusting screw and locknut into the motor housing. For a 90mm long screw, it should be adjusted such that the dimension from the top of the locknut to the end of the exposed screw is 16mm. (For different length screws, measure the length and subtract 74mm from this total length. This is the amount of screw that should be exposed above the locknut.) (For example: 100mm screw, minus 74 mm will leave 26mm above locknut).

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

•• 188-10

NOTE: Repeat for the other motor.

B.

AUXILIARY BRAKE SET-UP CALLIPER

MOTOR BEGIN OF DISPLACEMENT CONTROL PRESSURE ADJUSTMENT

GAUGE TEST PORT 'X' • PORT SIZE - 04 ORB

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

••

••

Perform this procedure on BOTH MOTORS. 1.

Set parking brake ON, lower grapple and dozer and shut off the engine.

2.

Adjust auxiliary brake set-up calliper to 70 lbf/ft., to lock the rotating brake disc.

3.

Connect a 0-1000 psi gauge to the ‘X’ port (common connection) of the hydrostatic motors, two 0-10,000 psi gauges to the ‘M1’ ports of the motors and a 0-10,000 psi gauge to the ‘Mb’ port on the main drive pump.

4.

To set the motor begin of displacement control pressure, it is necessary to temporarily adjust the hydrostatic PUMP pressure override to 4400 - 4450 psi.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.) 188-15

•

GAUGE TEST PORT 'M1 • PORT SIZE - 04 ORB

GAUGE TEST PORT 'M1' • PORT SIZE - 04 ORB

••

•• 189-6

189-4

LH DRIVE MOTOR

RH DRIVE MOTOR

Continued on page 18 MINIMUM DISPLACEMENT ADJUSTING SCREW - 6MM ALLEN KEY - 19MM WRENCH DIM. 'X' = 5/8" (16MM) FOR A 90MM LONG SCREW

DRIVE MOTORS

P.O.R. ADJUSTING SCREW

•

PORT 'X'

•

•

AQ010-1

BEGIN OF DISPLACEMENT ADJUSTING SCREW - 3MM ALLEN KEY - 10MM WRENCH PORT 'B'

AQ010-5Y

MAXIMUM DISPLACEMENT ADJUSTING SCREW (DO NOT ADJUST) FOR REFERENCE ONLY: DIM. 'X' = 5/8" (16MM) FOR A 50MM LONG SCREW

PORT 'A'

'A'

•

VIEW 'A'

• DRIVE MOTOR (160CC SIZE) 8.17

PORT 'M1' • 6 ORB 1/4" ALLEN KEY

Tigercat 630 Skidder

Drive

Continued from page

9.

To set the Motor begin of displacement control pressure, it is ALSO necessary to temporarily achieve a 145 & 155 psi pressure reading at the ‘X’ port on the hydrostatic MOTOR. (see next step)

GAUGE TEST PORT 'MB'

• PORT SIZE - 04 ORB

10. With the aid of an assistant, hold down the brake pedal and while fully depressing the REVERSE foot pedal, adjust the reverse drive pedal stroke limiting screw (located under pedal) upwards to limit the stroke of the reverse pedal to give a pressure reading at the ‘X’ port of 145 psi @full throttle for 15 seconds.

•• 188-1

17

5.

MAIN DRIVE PUMP Disconnect power wire from the parking brake switch terminal.

CAUTION

• ••

Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

6.

Start the engine, set throttle control to FULL throttle (2450 - 2460 rpm).

7.

With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, adjust the hydrostatic drive PUMP pressure override (P.O.R.) to achieve a pressure at ‘Mb’ of 4400-4450 psi @full throttle.

REVERSE LIMITING SCREW

FORWARD LIMITING SCREW

FORWARD AND REVERSE DRIVE PEDALS 189-10

Repeat this until it is correct. Repeat this procedure again with the FORWARD foot pedal to get a reading at the ‘X’ port of 155 psi for 15 seconds. NOTICE the difference in the pressure settings for forward and reverse pedals. These settings are important.

•

CAUTION MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

The machine should not be able to move while the brake pedal is depressed.

(SOME HOSES REMOVED FOR CLARITY)

PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.) 141-6A

• 4 MM ALLEN KEY • 13 MM WRENCH

11. With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, adjust the motor begin of displacement screw (small screw in pocket, points upwards) to give a reading of 2250 psi or higher (half of ‘Mb’) @full throttle at ‘M1’ port on both motors. This is very difficult to do and takes a little patience. The screw is VERY sensitive.

Get it as close as possible. Use TWO gauges and set BOTH MOTORS, moving back and forth between the two motors.

••

188-9

8.

DRIVE MOTOR (R.H. SHOWN)

MAIN DRIVE PUMP P.O.R. VALVE Adjust the MOTOR pressure override screw (P.O.R.) IN until it lightly seats. This screw points backwards and is located on top of the motor. Do not over tighten. Do this for BOTH motors.

8.18

Tigercat 630 Skidder

Drive

If the reading is HIGH; turn the motor begin of displacement control adjusting screw OUT (counter-clockwise) until a correct reading at ‘M1’ of 2200-2250 psi, (half of ‘Mb’) @full throttle is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to ensure that both gauges read 2200-2250 psi @full throttle. If it is not close, re-adjust the motor begin of displacement control adjusting screw on the motor that is incorrect.

16. The motor pressure override (P.O.R.) must be re-adjusted to complete this procedure.

(SEE - motor pressure override adjustment below)

C.

MOTOR PRESSURE OVERRIDE ADJUSTMENT (P.O.R.)

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

If the reading is LOW; turn the motor begin of displacement control adjusting screw IN (clockwise) until a correct reading at ‘M1’ of 2200-2250 psi, (half of ‘Mb’) is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to ensure that both gauges read 2200-2250 psi. If it is not close, re-adjust the motor begin of displacement control adjusting screw on the motor that is incorrect. Recheck frequently while adjusting by having assistant release and depress pedals.

Perform this procedure on BOTH MOTORS. Note: Steps 1 to 7 were completed in BEGIN OF DISPLACEMENT. If this procedure was just finished move to step 8.

1. Set parking brake ON, lower grapple and dozer and shut off the engine.

2. Adjust auxiliary set-up calliper to 70 lbf/ft., to lock the rotating brake disc.

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

NOTE: These settings are turn on/turn off points and should not be confused with pressure SETTINGS. 12. With the aid of an assistant, hold down the brake pedal and while fully depressing the REVERSE foot pedal (which was set to 145 psi) the motor SHOULD NOT STROKE and you should get a LOW PRESSURE reading of 2250psi or less @full throttle at ‘M1’ on BOTH MOTORS.

•• 188-10

13. With the aid of an assistant, hold down the brake pedal, full throttle and while fully depressing the FORWARD foot pedal (which was set to 155 psi) the motor SHOULD STROKE and you should get a HIGH PRESSURE reading of 2250 psi or higher @full throttle at ‘M1’ on BOTH MOTORS.

3.

AUXILIARY BRAKE SET-UP CALLIPER

Connect a 0-1000 psi gauge to the ‘X’ port (common connection) of the hydrostatic motors, two 0-10,000 psi gauges to the ‘M1’ ports of the motors and a 0-10,000 psi gauge to the ‘Mb’ port on the main drive pump.

14. If these readings are obtained, then the motor begin of displacement control setpoint is now between 145-155 psi. If not then readjust begin of displacement screw on failing motor and check again for 145 psi (low pressure and 155 psi (high pressure).

When properly set, this means that the motors will begin to stroke in the pressure range of 145 to 155 psi. This is a critical setting for the smooth and efficient drive operation of the machine.

GAUGE TEST PORT 'X' • PORT SIZE - 04 ORB

••

• MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

15. Check both motors to verify that this setting has not changed as the locknuts were tightened.

188-15

DRIVE MOTORS Continued on page 20

8.19

Tigercat 630 Skidder

Drive

Continued from page 19 PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.) • 4 MM ALLEN KEY • 13 MM WRENCH

GAUGE TEST PORT 'M1 • PORT SIZE - 04 ORB

GAUGE TEST PORT 'M1' • PORT SIZE - 04 ORB

•• •

•

189-4

189-6

RH DRIVE MOTOR

188-9

LH DRIVE MOTOR

8.

To set the motor pressure override adjustment (P.O.R.), it is ALSO necessary to achieve a 450-460 psi pressure reading at the ‘X’ port on the hydrostatic motor.

9.

With the aid of an assistant, hold down the brake pedal and adjust the FORWARD and the REVERSE foot pedal stroke limiting screws (located under pedals) to give a pressure reading of 450-460 psi @full throttle (the same value as charge pressure) at the ‘X’ port on the motors. It must read this for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct for both pedals.

GAUGE TEST PORT 'MB'

• PORT SIZE - 04 ORB

•• 188-1

MAIN DRIVE PUMP

4.

To set the motor pressure override adjustment (P.O.R.), it is necessary to temporarily adjust the hydrostatic PUMP pressure override to 4400 - 4450 psi.

5.

Disconnect power wire from the parking brake switch terminal.

CAUTION Do NOT adjust the drive pedal stroke limiting screw IN any further than the minimum required to achieve 450-460 psi (the same value as charge pressure). Damage to the foot pedal can occur if the pedal is allowed to stroke more than is required.

CAUTION Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

6.

Start the engine, set throttle control to full throttle, 2450 - 2460 rpm.

7.

With the aid of an assistant, hold down the brake pedal and while depressing the FORWARD foot pedal adjust the hydrostatic drive PUMP pressure override (P.O.R.) to achieve a pressure at the PUMP ‘Mb’ port of 4400 - 4450 psi @full throttle.

MAIN DRIVE PUMP P.O.R. VALVE

10. With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, observe the pressure at ‘M1’ on the hydrostatic drive motors. A reading of 2200-2250 psi (half of ‘Mb’) @full throttle should register if the motor pressure override adjustment is set correctly.

Check both motors.

•

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

CAUTION The machine should not be able to move while the brake pedal is depressed.

(SOME HOSES REMOVED FOR CLARITY) 141-6A

8.20

DRIVE MOTOR (R.H. SHOWN)

Tigercat 630 Skidder

Drive

If the reading is LOW; turn the motor pressure override adjusting screw IN (clockwise) until a correct reading at the motor ‘M1’ port (2200-2250 psi @full throttle, half of ‘Mb’) is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to ensure that the gauge reading at ‘M1’ is 2200-2250 psi. If it is not correct re-adjust the motor pressure override adjusting screw.

15. Re-adjust the auxiliary set-up calliper to its ORIGINAL POSITION (loose and locked with a cotter pin) using a wrench to back-off the screw adjustment. Friction between the brake calliper and the rotating brake disc can cause a fire.

SUMMARY: The settings must be made in the order shown.

MOTOR MINIMUM DISPLACEMENT ADJUSTMENT:

If the reading is HIGH; turn the motor pressure override adjusting screw OUT (counter-clockwise) until a correct reading at the motor ‘M1’ port (2200-2250 psi @full throttle, half of ‘Mb’) is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to ensure that the gauge reading at ‘M1’ is 2200-2250 psi. If it is not correct re-adjust the motor pressure override adjusting screw.

1.

BEGIN OF DISPLACEMENT ADJUSTMENT:

This adjustment must be done on both motors. When properly set the motor pressure override adjustment setpoint will be 4400-4450 psi @full throttle. Re-check frequently while adjusting by having assistant release and depress pedals.

11. With the aid of an assistant, hold down the brake pedal, full throttle and while depressing the FORWARD foot pedal, reset the P.O.R. on the drive PUMP to 6200-6250 psi @full throttle at ‘Mb’.

1.

Adjust pump P.O.R. to 4400-4450 @ full throttle.

2.

Turn both motor P.O.R. IN carefully until lightly seated.

3.

Adjust reverse pedal to 145 and forward pedal to 155 @ full throttle.

4.

Adjust both motor begin of displacement to 2200-2250 @ full throttle.

5.

Check for 145 psi no stroke (low pressure 2250 psi or less) and 155 psi stroke (high pressure 2250 psi or more) on motors.

6.

Motor P.O.R. must be reset. See below.

P.O.R. ADJUSTMENT:

PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.) • 4 MM ALLEN KEY • 13 MM WRENCH

••

188-9

Check adjusting screw for proper length

MAIN DRIVE PUMP P.O.R. VALVE

12. Set the parking brake ON, and shut off the engine.

13. Remove all pressure gauges and reinstall all plugs and caps.

14. Reconnect the PARK BRAKE SWITCH POWER WIRE to the switch.

8.21

1.

Adjust pump P.O.R. to 4400-4450 @ full throttle. (Done in step 1 above)

2.

Adjust forward and reverse pedals to give 450-460 @ full throttle.

3.

Adjust both motor P.O.R. to 2200-2250 @ full throttle.

4.

Adjust pump P.O.R. to 6200-6250 @ full throttle.

Tigercat 630 Skidder

630-23

Drive

DRIVE CIRCUIT - LATER MACHINES SERIAL NUMBERS 6300401 TO 6300999 8.22

Tigercat 630 Skidder

Drive

TEST DRIVE

UP, CLOSED and ROTATED TO CENTER. Dozer blade UP.

(LATER MACHINES - 6300401 TO 63000999) The test drive will verify the following: 1.

Motor begin of displacement control pressure: 145 - 155 psi.

2.

Motor pressure override (P.O.R.): 4400-4450 psi and (half of ‘Ma’) - 2200 - 2225 psi.

3.

Steering check; slow and fast.

4.

Front and rear differential lock functions.

5.

Horsepower/engine stall test.

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

1.

BEGIN OF DISPLACEMENT CONTROL PRESSURE:

A.

Turn ON both front and rear differential locks.

Set throttle control to FULL (2450 RPM.).

B.

Drive the machine FORWARD, using the foot pedal to get 150 psi at ‘X’.

Install three 0-10,000 psi gauges on ‘LM1’ and 'RM1' test ports in the TEST PORT COMPARTMENT and ‘Ma’ on the HYDROSTATIC PUMP. Install a 0-1,000 psi gauge on ‘X’ test port in the TEST PORT COMPARTMENT.

The foot brakes may have to be applied to create approximately 2000 psi at ‘Ma’ on the PUMP. C.

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

Fasten your seat belt and move the machine to a suitable test area, where it can be safely driven at full speed for approximately 150 feet. Grapple LM1

RM1

• •

X

•

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

2.

MOTOR PRESSURE OVERRIDE (P.O.R.):

A.

Turn ON both front and rear differential locks.

Set throttle control to FULL.

B.

Drive the machine FORWARD in a straight line with FULL DRIVE PEDAL. The ‘X’ gauge should show 450 psi (charge pressure).

Apply foot brake to slow machine down to approximately half maximum speed but NO SLOWER than half speed.

C.

While doing the above, observe the pressure at ‘Ma’. It should read the P.O.R. setting of 4400-4450 psi. Also read the pressure at both 'LM1' and 'LM2' gauges, it should be approximately half of ‘Ma’. 2200-2225 psi.

The engine should lug down to 2150-2200 rpm during this test. If the rpm stays above 2200 rpm during the test, check the hydrostatic pump.

TEST PORT COMPARTMENT (LATER MACHINES ONLY)

275-3

While doing the above, observe the TWO ‘M1’ gauges and adjust forward foot pedal, up or down until a reading of 1000 psi (half of ‘Ma’) just starts to appear on both the ‘LM1’ and 'RM1' gauges. Read the ‘X’ pressure gauge which is showing the begin of displacement pressure and it should be 145 - 155 psi. Both motors (‘LM1’ and 'RM1' gauges) should rise to 1000 psi within the 145 - 155 psi range on the ‘X’ gauge, if the set-up is correct.

GAUGE TEST PORT 'MA' • PORT SIZE - 04 ORB

••

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

188-1

MAIN DRIVE PUMP 8.23

Continued on page 24

Tigercat 630 Skidder

Drive

Continued from page 23

3.

STEERING OPERATION:

A.

Disengage the parking brake, turn OFF both front and rear differential locks, NO foot brake applied and throttle control set to FULL. Turn the steering wheel completely one way until it hits the stop.

B.

C.

D.

Turn the steering wheel the opposite way, as SLOWLY as possible, until it hits the end stop. This should take 7 1/2 to 8 turns of the wheel.

Turn the wheel back SLOWLY to the other end stop, very slowly to verify the 7 1/2 to 8 turns.

Turn the wheel back to the other end stop, as FAST as possible. Resistance to turning the wheel will be felt during this operation.

This should take 3 1/2 to 4 turns of the wheel.

E.

Turn the wheel back to the other end stop, as FAST as possible to verify the 3 1/2 to 4 turns from one stop to the other.

F.

If these values are not obtained, check the priority valve and/or steering control unit.

For additional information on the steering system refer to SECTION 11 of THIS MANUAL.

4.

DIFFERENTIAL LOCKS

A.

Bring the machine to a full stop, set throttle to IDLE, ensure that both front and rear differential locks are turned OFF. Steer the machine without depressing the drive pedal.

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

B.

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

Rear wheels should still rotate.

C.

Turn front differential lock switch OFF.

D.

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

5.

HORSEPOWER

A.

To check engine horsepower it is neccessary to temporarily reset dozer pressure to 1500 psi.

B.

Park machine on level ground, set parking brake ON, grapple DOWN, dozer DOWN and shut off the engine.

C.

Connect a 0-5000 psi gauge to the ‘P3’ port.

D.

Ensure that the hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in this SECTION.

E.

Start the engine, hold down the brake pedal and set the throttle to HIGH IDLE (24502460 rpm).

F.

With the aid of an assistant operate the dozer UP control and hold pressure.

G.

Adjust the dozer UP, port relief valve to give a reading of 1500 psi on the gauge.

H.

Turn off engine, remove gauges, reinstall plugs on the test ports.

I.

Start the engine, set throttle control to FULL (2450 rpm). Set parking brake OFF, grapple UP and dozer UP.

J.

Drive the machine FORWARD in a straight line with FULL DRIVE PEDAL and dozer blade control lever FULLY BACK to raise and hold the dozer blade. Apply service brakes to slow machine down to approximately half maximum speed but NO SLOWER than half speed.

K.

While doing the above, observe the engine rpm. The engine should lug down to between 1500 rpm and 1700 rpm and should not stall.

L.

IMPORTANT: Dozer pressures must be reset to normal levels after this test. See PRESSURE SETTINGS PROCEDURE in SECTION 14 of the SERVICE MANUAL. Note: This test may have to be done a few times to get a proper reading.

8.24

Tigercat 630 Skidder

Drive

DRIVE PUMP PRESSURE SETTINGS AND ADJUSTMENTS

3.

(LATER MACHINES - 6300401 TO 6300999)

IMPORTANT The adjustment or set-up procedure is a series of steps that must be done in a proper sequence to achieve optimum performance from the machine. Any deviation from the procedures could present a safety hazard, damage components and/or affect the operation of the machine.

Connect a 0-10,000 psi gauge to port ‘Ma’ and ‘Mb’ on the HYDROSTATIC DRIVE PUMP, and a 0-1000 psi gauge to the tee connection from port ‘G’ on the HYDROSTATIC DRIVE PUMP. Also connect a 0-1000 psi gauge on the ‘X’ port in the TEST PORT COMPARTMENT. LM1

RM1

• •

X

•

Also refer to Chart 1 - DRIVE PUMP PRESSURE SETTINGS in THIS SECTION. NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

275-3

4.

NOTE: Relief valves are set by loosening the locknut and turning the adjusting screw OUT (counter-clockwise) to reduce the pressure setting and IN (clockwise) to increase the pressure setting.

1.

Disconnect parking brake switch power wire from the switch.

CAUTION Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

Set parking brake ON, lower grapple and dozer and shut off the engine.

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

2.

TEST PORT COMPARTMENT (LATER MACHINES ONLY)

5.

Start the engine, raise to FULL throttle (2450 - 2460 rpm) and set the charge pressure relief valve on the pump to 450 460 psi (0 - 1000 psi gauge at ‘G’ port).

6.

Turn both of the high pressure relief valve adjusting screws (A) and (B) on the PUMP to an ‘X’ dimension of 3/32” to 1/8” (0.094" 0.125") (2.38mm - 3.18mm) above the locknut and lock down.

Adjust auxiliary brake set-up calliper to 70 lbf/ft., to lock the rotating Brake disc.

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

'X'

••

DIM X

7.

188-10

TYPICAL 'X' DIMENSION FOR MAIN RELIEF AND P.O.R. VALVES Turn the PUMP P.O.R. to an ‘X’ dimension of 5/8" to 21/32”(.625-.656”) (15.88-16.67mm) above the locknut and lock down.

AUXILIARY BRAKE SET-UP CALLIPER Continued on page 26

8.25

Tigercat 630 Skidder

Drive

Continued from page 25

8.

With the aid of an assistant, hold down the brake pedal, and while fully depressing the REVERSE foot pedal, set the PUMP P.O.R. to 4450 psi. @ full throttle on the ‘Mb’ gauge.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

To set the drive pump port reliefs (forward, ‘Ma’ and reverse, ‘Mb’), it is ALSO necessary to temporarily achieve a 150-155 psi pressure reading at the ‘X’ port in the TEST PORT COMPARTMENT using both the REVERSE drive and FORWARD drive pedals.

10. Adjust the REVERSE drive pedal stroke limiting screw (located under pedal) UPWARDS to limit the stroke of the pedal.

With the aid of an assistant, hold down the brake pedal and while fully depressing the REVERSE foot pedal, observe the pressure reading at the ‘X’ test port. It must read 150 155 psi @full throttle for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct. Repeat for forward drive pedal.

•• DRIVE MOTORS

188-15

9.

Chart 1 - DRIVE PUMP PRESSURE SETTINGS MACHINE

PUMP

P.O.R. (FOR. AND REV.)

MAIN RELIEFS (FOR. AND REV.)

CHARGE PRESSURE

MOTOR

630

AP018 (125CC)

6200 - 6250 PSI @ 2450-2460 RPM

6850-6900 PSI @ 2450-2460 RPM

450-460 PSI @ 2450-2460 RPM

AQ010 (160 CC)

'B' PORT RELIEF 5 MM ALLEN KEY 17 MM WRENCH ‘X’ DIMENSION = è 3/32” - 1/8” OR: è (0.094" - 0.125") è (2.38mm - 3.18mm)

P.O.R. VALVE ‘X’ DIMENSION = è 5/8"- 21/32” OR: è (.625-.656”) è (15.88-16.67MM) • 4 MM ALLEN KEY • 13 MM WRENCH

•

•• GAUGE TEST PORT 'MB' • PORT SIZE - 04 ORB

•• 'TEE' GAUGE TEST PORT (G) • PORT SIZE - 04 JIC

188-9

PUMP P.O.R. VALVE

CHARGE PRESS. RELIEF • 5 MM ALLEN KEY • 17 MM WRENCH

• • • GAUGE TEST PORT 'MA' • PORT SIZE - 04 ORB

188-1

•• MAIN DRIVE PUMP ~ REXROTH 8.26

'A' PORT RELIEF ‘X’ DIMENSION = è 3/32” - 1/8” OR: è (0.094" - 0.125") è (2.38mm - 3.18mm) 5 MM ALLEN KEY 17 MM WRENCH

Tigercat 630 Skidder

Drive pedal and the pressure at test port ‘X’ . With the aid of an assistant, hold down the brake pedal and while fully depressing the reverse foot pedal, observe the pressure reading at test port ‘X’ . It must read 450-460 psi @full throttle (the same value as charge pressure) for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct. Repeat for forward drive pedal stroke limiting screw.

• •• REVERSE LIMITING SCREW

FORWARD LIMITING SCREW

FORWARD AND REVERSE DRIVE PEDALS 189-10

16. Set the parking brake ON, and shut off the engine.

11. Turn the pump P.O.R. adjusting screw in exactly 2 1/2 turns.

CAUTION

CAUTION

The machine should not be able to move while the brake pedal is depressed.

Do NOT adjust the drive pedal stroke limiting screw IN any further than the minimum required to achieve 450-460 psi (the same value as charge pressure). Damage to the foot pedal can occur if the pedal is allowed to stroke more than is required.

WARNING Do not permit high pressure relief valves to operate for periods longer than 5 - 10 seconds as this will cause excessive heating of the hydraulic fluid and damage to the valve.

17. Remove all pressure gauges and reinstall all plugs and caps.

18. Reconnect the PARK BRAKE SWITCH POWER WIRE to the switch.

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

Adjustments are made during the time the pedal is pressed.

19. Re-adjust the auxiliary set-up calliper to its ORIGINAL POSITION (loose and locked with a cotter pin) using a wrench to back-off the screw adjustment. Friction between the brake calliper and the rotating brake disc can cause a fire.

SUMMARY: The settings must be made in the order shown.

12. With the aid of an assistant, hold down the brake pedal, and while fully depressing the REVERSE foot pedal, set the port ‘B’ relief valve (‘Mb’) to 6850 - 6900 psi @ full throttle.

13. With the aid of an assistant, hold down the brake pedal, and while fully depressing the FORWARD foot pedal, set the port ‘A’ relief valve (‘Ma’) to 6850 - 6900 psi @ full throttle.

14. With the aid of an assistant, hold down the brake pedal, and while fully depressing the REVERSE foot pedal, reset the pump pressure override adjustment (P.O.R.) to 6200 - 6250 psi @ full throttle on the ‘Mb’ gauge.

15. Re-adjust the reverse drive pedal stroke limiting screw to change the stroke of the 8.27

1.

Adjust charge pressure to 450-460 @ full throttle

2.

Turn BOTH pump mains screws to ‘X’ dimension above locknut.

3.

Turn pump P.O.R. to ‘X’ dimension above locknut.

4.

Set pump P.O.R. to 4450 @ full throttle.

5.

Adjust forward and reverse pedals to 150155 @ full throttle.

6.

Turn P.O.R. screw IN exactly 2 1/2 turns.

7.

Adjust BOTH main relief valves to 6850-6900 @ full throttle.

8.

Adjust pump P.O.R. to 6200-6250 @ full throttle.

9.

Adjust forward and reverse pedals to 450460 @ full throttle.

Tigercat 630 Skidder

Drive

DRIVE MOTOR PRESSURE SETTINGS AND ADJUSTMENTS

Perform this procedure on BOTH MOTORS..

1.

(LATER MACHINES - 6300401 TO 6300999) To set the hydrostatic drive motor pressures and speeds, the following procedure must be performed in the order shown.

A.

Set the motor minimum displacement.

B.

Set the motor begin of displacement control pressure.

C.

Set the motor pressure override.

Park machine on level ground, lower grapple and dozer and set parking brake ON. Install articulation lock pin and stop engine

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

IMPORTANT The adjustment or set-up procedure is a series of steps that must be done in a proper sequence to achieve optimum performance from the machine. Any deviation from the procedures could present a safety hazard, damage components and/or affect the operation of the machine. All adjustments must be performed on BOTH MOTORS.

2.

Remove the minimum displacement adjusting screw (largest screw) from the top of motor housing and measure its length.

• • MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

IMPORTANT

(SOME HOSES REMOVED FOR CLARITY)

• When installing a new or rebuilt motor, ensure minimum displacement screw is set correctly.

141-6A

• Improper adjustment of min. displacement adjusting screw can result in motor failure due to overspeeding.

3.

• It may be necessary to verify the length of adjusting screw used by removing and measuring the screw.

• Use Chart 2 - Drive Motor Screw Adjustments.

A.

MOTOR MINIMUM DISPLACEMENT ADJUSTMENT

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

MINIMUM DISPLACEMENT ADJUSTING SCREW

DRIVE MOTOR (R.H. SHOWN) Reinstall the minimum displacement adjusting screw and locknut into the motor housing. For a 90mm long screw, it should be adjusted such that the dimension from the top of the locknut to the end of the exposed screw is 16mm. (For different length screws, measure the length and subtract 74mm from this total length. This is the amount of screw that should be exposed above the locknut.) (For example: 100mm screw, minus 74 mm will leave 26mm above locknut).

NOTE: Repeat for the other motor.

Chart 2 - DRIVE MOTOR SCREW ADJUSTMENTS MACHINE

MOTOR

BEGIN OF DISPLACEMENT

630

AQ010 (160 CC)

2250 PSI @ 2450-2460 RPM

"X" DIMENSION** TOP OF SCREW TO TOP OF NUT 6 MM (0.23") ***16 MM (0.62") 26 MM (1.01")

*LENGTH OF ADJUSTING SCREW

PUMP

M12 X 80 MM (3.1") M12 X 90 MM (3.5") M12 X 100 MM (3.9")

AP018 (125 CC)

* NOTE: ALWAYS CHECK OVERALL LENGTH OF ADJUSTING SCREW BEFORE SETTING THE "X" DIMENSION ON A NEW DRIVE MOTOR **NOTE: THIS IS A SENSITIVE ADJUSTMENT, SIGNIFICANT CHANGES IN SPEED WILL OCCUR WITH ONLY A SMALL MOVEMENT OF THE ADJUSTING SCREW. IT IS IMPORTANT THAT THIS DIMENSION BE WITHIN THE SPECIFIED TOLERANCE: "X" = +0MM/-1MM (+0"/-0.031") *** INDICATES THE ADJUSTING SCREW CUSTOMARILY INSTALLED IN A NEW UNIT

8.28

Tigercat 630 Skidder B.

Drive

MOTOR BEGIN OF DISPLACEMENT CONTROL PRESSURE ADJUSTMENT

LM1

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

RM1

• •

X

•

Perform this procedure on BOTH MOTORS. 1.

Set parking brake ON, lower grapple and dozer and shut off the engine.

2.

Adjust auxiliary brake set-up calliper to 70 lbf/ft., to lock the rotating brake disc.

TEST PORT COMPARTMENT (LATER MACHINES ONLY)

275-3

GAUGE TEST PORT 'M A'

• PORT SIZE - 04 ORB

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

•

• MAIN DRIVE PUMP

188-1

•• 188-10

3.

4.

AUXILIARY BRAKE SET-UP CALLIPER

Connect a 0-1000 psi gauge to the ‘X’ test port , two 0-10,000 psi gauges to the ‘LM1’ and 'RM1' testports a 0-10,000 psi gauge to the ‘Ma’ port on the main drive pump.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

To set the motor begin of displacement control pressure, it is necessary to temporarily adjust the hydrostatic PUMP pressure override to 4400 - 4450 psi.

188-15

•

DRIVE MOTORS

Continued on page 30

MINIMUM DISPLACEMENT ADJUSTING SCREW - 6MM ALLEN KEY - 19MM WRENCH DIM. 'X' = 5/8" (16MM) FOR A 90MM LONG SCREW

•

P.O.R. ADJUSTING SCREW

•

PORT 'X'

•

•

AQ010-1

BEGIN OF DISPLACEMENT ADJUSTING SCREW - 3MM ALLEN KEY - 10MM WRENCH PORT 'B'

AQ010-5Y

MAXIMUM DISPLACEMENT ADJUSTING SCREW (DO NOT ADJUST) FOR REFERENCE ONLY: DIM. 'X' = 5/8" (16MM) FOR A 50MM LONG SCREW

PORT 'A'

'A'

•

VIEW 'A'

• DRIVE MOTOR (160CC SIZE) 8.29

PORT 'M1' • 6 ORB 1/4" ALLEN KEY

Tigercat 630 Skidder

Drive

Continued from page 29

5.

Disconnect power wire from the parking brake switch terminal.

•• •

CAUTION REVERSE LIMITING SCREW

Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

6.

Start the engine, set throttle control to FULL throttle (2450 - 2460 rpm).

7.

With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, adjust the hydrostatic drive PUMP pressure override (P.O.R.) to achieve a pressure at ‘Ma’ of 4400-4450 psi @full throttle.

FORWARD LIMITING SCREW

FORWARD AND REVERSE DRIVE PEDALS 189-10

under pedal) upwards to limit the stroke of the reverse pedal to give a pressure reading at the ‘X’ test port of 145 psi @full throttle for 15 seconds.

Repeat this until it is correct. Repeat this procedure again with the FORWARD foot pedal to get a reading at the ‘X’ test port of 155 psi @full throttle for 15 seconds.

NOTICE the difference in the pressure settings for forward and reverse pedals.

These settings are important.

CAUTION •

The machine should not be able to move while the brake pedal is depressed.

PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

• 4 MM ALLEN KEY • 13 MM WRENCH

(SOME HOSES REMOVED FOR CLARITY)

••

188-9

141-6A

11. With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, adjust the motor begin of displacement screw (small screw in pocket, points upwards) to give a reading of 2250 psi or higher @full throttle (half of ‘Ma’) at 'RM1' and 'LM1' test ports. This is very difficult to do and takes a little patience. The screw is VERY sensitive.

Get it as close as possible. Use TWO gauges and set BOTH MOTORS, moving back and forth between the two motors.

MAIN DRIVE PUMP P.O.R. VALVE

8.

Adjust the MOTOR pressure override screw (P.O.R.) IN until it lightly seats. This screw points backwards and is located on top of the motor. Do not over tighten. Do this for BOTH motors.

9.

To set the Motor begin of displacement control pressure, it is ALSO necessary to temporarily achieve a 145 & 155 psi pressure reading at the ‘X’ test port. (see next step)

DRIVE MOTOR (R.H. SHOWN)

If the reading is HIGH; turn the motor begin of displacement control adjusting screw OUT (counter-clockwise) until a correct reading at ‘LM1’ and 'RM1' of 2200-2250 psi @full throttle, (half of ‘Ma’) is obtained with the locknut tightened.

Release the FORWARD foot pedal and reapply to ensure that both gauges read 22002250 psi. If it is not close, re-adjust the motor begin of displacement control

10. With the aid of an assistant, hold down the brake pedal and while fully depressing the REVERSE foot pedal, adjust the reverse drive pedal stroke limiting screw (located

8.30

Tigercat 630 Skidder

Drive

adjusting screw on the motor that is incorrect.

C.

MOTOR PRESSURE OVERRIDE ADJUSTMENT (P.O.R.)

If the reading is LOW; turn the motor begin of displacement control adjusting screw IN (clockwise) until a correct reading at ‘LM1’ and 'RM1' of 2200-2250 psi @full throttle, (half of ‘Ma’) is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to ensure that both gauges read 2200-2250 psi. If it is not close, readjust the motor begin of displacement control adjusting screw on the motor that is incorrect. Re-check frequently while adjusting by having assistant release and depress pedals.

NOTE: Ensure hydraulic oil is at operating temperature. Refer to HYDRAULIC OIL HEATING PROCEDURE in THIS SECTION of the manual.

Perform this procedure on BOTH MOTORS. Note: Steps 1 to 7 were completed in BEGIN OF DISPLACEMENT. If this procedure was just finished move to step 8.

1. Set parking brake ON, lower grapple and dozer and shut off the engine.

2. Adjust auxiliary set-up calliper to 70 lbf/ft., to lock the rotating brake disc.

NOTE: These settings are turn on/turn off points and should not be confused with pressure SETTINGS.

ADJUST AUXILIARY BRAKE SET-UP CALLIPER (ADJUSTING NUT) TO 70 LBF/FT.

12. With the aid of an assistant, hold down the brake pedal, full throttle and while fully depressing the REVERSE foot pedal (which was set to 145 psi) the motor SHOULD NOT STROKE and you should get a LOW PRESSURE reading of 2250 psi or less @full throttle at ‘RM1’ and 'LM1'.

•

13. With the aid of an assistant, hold down the brake pedal, full throttle and while fully depressing the FORWARD foot pedal (which was set to 155 psi) the motor SHOULD STROKE and you should get a HIGH PRESSURE reading of 2250 psi or higher@full throttle at ‘LM1’ and 'RM1'.

188-10

3.

14. If these readings are obtained, then the motor begin of displacement control setpoint is now between 145-155 psi. If not then readjust begin of displacement screw on failing motor and check again for 145 psi (low pressure and 155 psi (high pressure).

When properly set, this means that the motors will begin to stroke in the pressure range of 145 to 155 psi. This is a critical setting for the smooth and efficient drive operation of the machine.

AUXILIARY BRAKE SET-UP CALLIPER

Connect a 0-1000 psi gauge to the ‘X’ test port, two 0-10,000 psi gauges to 'LM1’ and 'RM1' test ports a 0-10,000 psi gauge to the ‘Ma’ port on the main drive pump.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

15. Check both motors to verify that this setting has not changed as the locknuts were tightened.

188-15

4.

16. The motor pressure override (P.O.R.) must be re-adjusted to complete this procedure.

Refer to MOTOR PRESSURE OVERRIDE ADJUSTMENT (P.O.R.) below.

•

DRIVE MOTORS

To set the motor pressure override adjustment (P.O.R.), it is necessary to temporarily adjust the hydrostatic PUMP pressure override to 4400 - 4450 psi.

Continued on page 32

8.31

Tigercat 630 Skidder

Drive

Continued from page 31 LM1

RM1

PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

X

• 4 MM ALLEN KEY • 13 MM WRENCH

• •

••

••

TEST PORT COMPARTMENT (LATER MACHINES ONLY)

275-3

188-9

GAUGE TEST PORT 'M A'

• PORT SIZE - 04 ORB

pressure reading of 450-460 psi @full throttle (the same value as charge pressure) at the ‘X’ test port. It must read this for 15 seconds, to ensure that the reading is correct. If it is not correct, repeat the procedure until it is correct for both pedals.

•

• 188-1

MAIN DRIVE PUMP P.O.R. VALVE

MAIN DRIVE PUMP

CAUTION 5.

Disconnect power wire from the parking brake switch terminal.

Do NOT adjust the drive pedal stroke limiting screw IN any further than the minimum required to achieve 450-460 psi (the same value as charge pressure). Damage to the foot pedal can occur if the pedal is allowed to stroke more than is required.

CAUTION Avoid the risk of unintentionally driving the machine with this wire disconnected, the parking brake will be ON without the ability to release it. This will result in overheating of the brakes which could cause a fire in the machine.

6.

Start the engine, set throttle control to full throttle, 2450 - 2460 rpm.

7.

With the aid of an assistant, hold down the brake pedal, and while depressing the FORWARD foot pedal adjust the hydrostatic drive PUMP pressure override (P.O.R.) to achieve a pressure at the PUMP ‘Ma’ port of 4400 - 4450 psi @full throttle.

10. With the aid of an assistant, hold down the brake pedal and while fully depressing the FORWARD foot pedal, observe the pressure at ‘LM1’ and 'RM1'. A reading of 2200-2250 psi (half of ‘Ma’) @ full throttle should register if the motor pressure override adjustment is set correctly. Check both motors.

If the reading is LOW; turn the motor pressure override adjusting screw IN (clockwise) until a correct reading at the ‘LM1’ and 'RM1' test ports (2200-2250 psi @full throttle, half of ‘Ma’) is obtained with the locknut tightened. Release the FORWARD foot pedal and re-apply to

CAUTION The machine should not be able to move while the brake pedal is depressed.

8.

9.

•

To set the motor pressure override adjustment (P.O.R.), it is ALSO necessary to achieve a 450-460 psi pressure reading at the ‘X’ test port.

MOTOR PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

With the aid of an assistant, hold down the brake pedal and adjust the FORWARD and the REVERSE foot pedal stroke limiting screws (located under pedals)to give a

(SOME HOSES REMOVED FOR CLARITY) 141-6A

8.32

DRIVE MOTOR (R.H. SHOWN)

Tigercat 630 Skidder

Drive

ensure that the gauge reading at ‘RM1’ and 'LM1' is 2200-2250 psi. If it is not correct readjust the motor pressure override adjusting screw.

SUMMARY: The settings must be made in the order shown.

MOTOR MINIMUM DISPLACEMENT ADJUSTMENT:

If the reading is HIGH; turn the motor pressure override adjusting screw OUT (counter-clockwise) until a correct gauge reading at ‘LM1’ and 'RM1' port (2200-2250 psi @full throttle, half of ‘Ma’) is obtained with the locknut tightened.

Release the FORWARD foot pedal and reapply to ensure that the gauge reading at ‘RM1’ and 'LM1' is 2200-2250 psi. If it is not correct re-adjust the motor pressure override adjusting screw.

1.

BEGIN OF DISPLACEMENT ADJUSTMENT:

This adjustment must be done on both motors. When properly set the motor pressure override adjustment setpoint will be 4400-4450 psi. Re-check frequently while adjusting by having assistant release and depress pedals.

11. With the aid of an assistant, hold down the brake pedal, full throttle and while depressing the FORWARD foot pedal, reset the P.O.R. on the drive PUMP to 6200 - 6250 psi @full throttle at ‘Ma’.

1.

Adjust pump P.O.R. to 4400-4450 @ full throttle.

2.

Turn both motor P.O.R. IN carefully until lightly seated.

3.

Adjust reverse pedal to 145 and forward pedal to 155 @ full throttle.

4.

Adjust both motor begin of displacement to 2200-2250 @ full throttle.

5.

Check for 145 psi no stroke (low pressure 2250 psi or less) and 155 psi stroke (high pressure 2250 psi or more) on motors.

6.

Motor P.O.R. must be reset. See below.

P.O.R. ADJUSTMENT:

PUMP PRESSURE OVERRIDE ADJUSTING SCREW (P.O.R.)

1.

Adjust pump P.O.R. to 4400-4450 @ full throttle. (Done in step 1 above)

2.

Adjust forward and reverse pedals to give 450-460 @ full throttle.

3.

Adjust both motor P.O.R. to 2200-2250 @ full throttle.

4.

Adjust pump P.O.R. to 6200-6250 @ full throttle.

• 4 MM ALLEN KEY • 13 MM WRENCH

••

188-9

Check adjusting screw for proper length

MAIN DRIVE PUMP P.O.R. VALVE

12. Set the parking brake ON, and shut off the engine.

13. Remove all pressure gauges and reinstall all plugs and caps.

14. Reconnect the PARK BRAKE SWITCH POWER WIRE to the switch.

15. Re-adjust the auxiliary set-up calliper to its ORIGINAL POSITION (loose and locked with a cotter pin) using a wrench to back-off the screw adjustment. Friction between the brake calliper and the rotating brake disc can cause a fire.

8.33

Tigercat 630 Skidder

Drive

TRANSMISSION

DISCONNECT LEVER

The transmission drives both the front and rear axles of the machine. Power is supplied by two hydraulic motors mounted to the input side of the transmission. The output shafts transmit the power to both the front and rear axles.

•

The gears and bearings in the transmission are lubricated by splash lubrication inside the case.

The oil level in the transmission must always be kept up to the proper level indicated on the dipstick. Refer SECTION 3 of this manual for the recommended lubricant.

172-25

The transmission disconnect lever is accessed from the right side, between the cab and heat exchanger assembly. A short bar is placed through the hole in the lever and pulled upwards to put the transmission into neutral.

CAB SECURING PIN (RIGHT SIDE)

DIPSTICK

••

CAUTION

••

When the transmission is in neutral, never tow the machine at over 2 m.p.h. and never press the forward or reverse pedals, as this will cause significant damage to the transmission.

TRANSMISSION OIL LEVEL

172-10

(EARLY MACHINES - 6300101 TO 6300400)

For more information on towing, Refer to TOWING INSTRUCTIONS in SECTION 2 of the OPERATOR'S MANUAL.

DIPSTICK

• TRANSMISSION OIL LEVEL 275-3

(LATER MACHINES 6300401 TO 6300999)

TRANSMISSION DISCONNECT LEVER

TEST PORT COMPARTMENT LEFT SIDE OF CAB

The transmission disconnect lever is used to shift the transmission between the DRIVE and NEUTRAL positions, e.g. NEUTRAL for towing the machine.

8.34

Tigercat 630 Skidder AXLES

Drive

Power from the two drive motors is transmitted to the front and rear axles via a transmission and the front and rear drive shafts.

The rear axle assembly is bolted directly to the rear frame. The front axle assembly is pivot mounted to the front frame allowing it to oscillate.

DRAIN (TOP)

Apart from the mounting, both front and rear axle assemblies are configured in a similar way except that the front axle has internal brakes and the rear has none.

DIFF. LOCK (BTM.)

Each axle assembly consists of (1) input yoke, (2) spiral bevel gear set, (3) differential gear set, (4) Hydraulic differential lock, (5) Inboard multiple wet disk brakes, (1-each side in front axle only) (6) inboard planetary final drives, 1-each side and (7) axle housings and shafts.

REAR AXLE

26KSM

DIFF. LOCK (BTM.)

BRAKE

The lubricant in both axle assemblies is the same oil as the hydraulic system. There are drain lines from each axle plumbed into the machine hydraulic system. These drain lines take care of internal leakage from the differential locks and brakes, which use the same hydraulic oil as the machine. Refer also to AXLE LUBRICATION in THIS SECTION.

DRAIN

PLANETARY FINAL DRIVE The final drive (6) is an inboard mounted planetary gear arrangement which further

27KSM

FRONT AXLE HYDRAULIC CONNECTIONS

Continued on page 36

1

2 GREASE SEAL

3

GREASE FITTING

4

6

7

OUTER BEARING

5 AXL-3

AXLE ASSEMBLY CROSS SECTION (FRONT SHOWN) 8.35

GREASE SEAL

Tigercat 630 Skidder

Drive

Continued from page 35

reduces speed and increases torque to the axles.

The input side receives drive power from the differential via a sun gear shaft. The output side (planetary carrier) is splined on to the axle.

brakes. Maximum operating pressure for the brakes is 1000 psi. For information on the hydraulic circuit refer to SECTION 9 of THIS MANUAL.

DIFFERENTIAL AND DIFFERENTIAL LOCKS The differentials (3) distribute the power to each side of the axle while allowing the wheels to turn at different speeds. The differential locks (4), in the front and rear axle assemblies, are hydraulically controlled and can be independently turned ON or OFF by switches in the cab.

BRAKE LINING INSPECTION Inspection ports are provided in the differential case on the front axle and are located on each side of the pivot boss when viewed from the side opposite the input shaft.

• •

Remove brake inspection port plugs Inspect brake linings on both sides of the disk.

• If brake lining material is worn down to the bottom of the oil grooves, brake backing plate and annular piston pressure plate assemblies must be replaced.

BRAKE BLEEDING

Placing one or both switches in the ON position, energizes the differential lock control valve solenoid (located on the multifunction valve) and directs pilot oil to the corresponding differential clutch pack assembly pistons to lock the differential(s).

This condition provides positive drive to both wheels of the axle when tractive conditions might otherwise allow one wheel to spin.

The front axle assembly is equipped with two brake bleed screws, one for each side. Brakes must be bled whenever there has been potential for air to enter the system, such as removal of hydraulic line. Both passages must be bled one at a time.

CAUTION Differential locks should only be used when additional traction is needed.

SINGLE BRAKE LINE ACTUATES BOTH BRAKES

SERVICE BRAKES (FRONT AXLE ONLY) The "wet" disk type service brakes consist of an annular piston, a brake disk with brake facing material, and a brake backing plate. One brake assembly is located on each side of the differential case and before the final drive.

BLEED SCREWS

SINGLE BRAKE PEDAL

• •

• BRAKE DISK

• BACKING PLATE

• FRONT AXLE ASSEMBLY

DUAL BRAKES (FRONT AXLE) PROCEDURE AXL-BRK1

1.

2.

ANNULAR PISTON

AXL-BRK

3.

4.

5.

ANNULAR BRAKE

The piston and the backing plate are attached to the case and the brake disk is splined on to the sun gear of the planetary final drive.

6.

7.

8.

When the brake foot control in the cab is depressed, brake pressure oil moves the piston up against the brake disk and traps it between the piston and the backing plate to apply the 8.36

Place parking brake ON. Place a clear plastic tube over bleed screw with other end in a container.

Start engine and run at IDLE Loosen bleed screw Push and hold brake pedal down until brake bleeding procedure is complete (no air bubbles in clear plastic tube).

Close bleed screw when oil is free of air.

Release brake pedal.

Repeat above procedure for each bleed screw.

Tigercat 630 Skidder

Drive WHEEL INSTALLATION

AXLE LUBRICATION The axles are allowed to completely fill with oil to the top of the differential case. This hydraulic oil buildup inside the differential case is due to normal internal leakage from the differential locks and is used as lubricant for the differential. The excess oil drains back to the hydraulic tank via the axle drain line.

NOTE: All wheel installation joints and surfaces should be clean, flat surfaces (free of paint, grease and oil etc.) using grade 8 bolts, hardened washers and standard torque practices.

•

DRAINING THE AXLES Care should be taken when draining the hydraulic oil from the axles, not to also drain the oil from the hydraulic tank. To prevent oil from siphoning from the tank, first remove the hydraulic drain line from the top of the axle to allow air to vent into the axle when the bottom drain plug is removed and oil drains out. The line that is removed must be capped to prevent draining from the hydraulic tank.

Use tapered assembly studs to help with wheel installation. Two or three studs can be used on each side.

2.17" MIN. FULL THREAD

.79" .406" DRILL

.06" X 45° 3/4" - 10 UNC THREAD OR 7/8" - 14 UNF THREAD

The time to schedule an oil change in the axles is when doing the seasonal oil change on the hydraulic oil tank, as they are part of the overall system and use the same oil.

20°

2.64" 3.41"

TAPERED ASSEMBLY STUD 3/4" & 7/8"

IMPORTANT

AXL-WHL

The tapered assembly stud shown can be fabricated to aid in wheel installation on an axle flange.

Care should be taken to refill the axle(s) before moving the machine after draining.

FILLING THE AXLES The axles must be filled by pumping oil in through the bottom drain plug port. A vent plug at the top of the axle should be removed to allow air to vent out and to allow oil to exit when the axle is full of oil.

•

Note: If ONLY the axles were drained and not the entire hydraulic system, the port from which the drainline was removed will provide the vent and oil will exit from this port when the axle is full of oil.

The drainline should remain capped until it is reinstalled.

Care must be taken to ensure that both axles are completely full of oil and that all plugs, fittings and lines are tight.

Thoroughly clean the wheel bolts, washers and the tapped holes in the axle flange. Two wheel bolt thread sizes are in use. All early machines used 3/4" - UNC bolts. All later machines used 7/8" - UNC bolts. When cleaning in flange, double check and be sure to use the proper size tap for the threads.

•

Install the wheel with the aid of the tapered assembly studs.

•

Install wheel bolts by hand to insure bolts are not cross threaded.

•

Remove assembly studs and install the remaining bolts.

•

Torque wheel bolts to the following values: 3/4"-10 UNC torque to 282-310 lbf/ft.

Front Axle: Access to the vent plug (1 1/4") on the back, right side, near the top, of the front axle.

Tilt the right side of the axle down for easier access.

7/8"-14 UNF torque to 500-550 lbf/ft.

WARNING

Rear Axle: There are two vent plugs (11/16") on top of the rear axle. One on each side under the grapple valve. Remove cover plate to access.

If a power wrench is used, be sure that the wheel bolts are first hand-engaged to prevent stripping. Operate the wrench slowly to prevent damage to the threads.

CAPACITIES For front and rear axle oil fill capacities, refer to the table: SERVICE AND LUBRICATION in SECTION 3 of THIS MANUAL. 8.37

Tigercat 630 Skidder

Drive

8.38

Tigercat 630 Skidder SECTION 9 - BRAKES DECEMBER 1999

CONTENTS - SECTION 9 ACCUMULATOR ACCUMULATOR ...................................................................................................................... 9.2 CHARGING AND TESTING DEVICE ......................................................................................9.3 CHARGING THE ACCUMULATOR .......................................................................................... 9.3 CHECKING GAS PRESSURE ................................................................................................. 9.3 BRAKES ACCUMULATOR AND SERVICE BRAKES .............................................................................. 9.6 BRAKE PILOT VALVE ..............................................................................................................9.2 PARKING BRAKE .................................................................................................................. 9.10 CHARGING VALVE, ACCUMULATOR .......................................................................................

CIRCUIT DIAGRAM (6300101 TO 6300400) .............................................................................

CIRCUIT DIAGRAM (6300401 TO 6300610) .............................................................................

CIRCUIT DIAGRAM (6300611 TO 6300999) .............................................................................

9.3 9.7 9.8 9.9

DIFFERENTIAL LOCKS ADJUSTING DIFFERENTIAL LOCK VALVES: ......................................................................... 9.5 CIRCUIT DESCRIPTION ......................................................................................................... 9.5 MULTIFUNCTION VALVE ADJUSTING HIGH PRESS RELIEF AND MAIN PUMP ...........................................................9.5 DESCRIPTION ........................................................................................................................ 9.4 HIGH PRESSURE RELIEF ...................................................................................................... 9.5 PARKING BRAKE .....................................................................................................................9.10

Tigercat 630 Skidder

Brakes

BRAKE PILOT VALVE

A positive stop in the brake valve limits the brake pressure to a preset value.

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

This preset value is determined by the requirements of the brakes in the front axle, which in this case is 1000 psi. The brake pedal therefore regulates the pressure in the brake lines to 1000 psi.

As the pedal is depressed, pressure is provided to the brakes in the front axle from the accumulator.

A reaction piston in the valve senses this increase in brake pressure and relays feedback to the operator, i.e. as brake pressure increases the pedal effort increases proportionately.

When the pedal is released, the spool returns to its neutral position and allows the brake cylinders to drain to tank.

A

T

P

T

A P

MO-02

CROSS SECTION OF VALVE BODY MO-01

BRAKE VALVE

ACCUMULATOR VALVE GUARD

The accumulator is a bladder type and is installed with a nitrogen pre-charge pressure of approximately 750 psi.

VALVE CAP GAS VALVE

The gas pressure should be checked if the pilot system exhibits repeated and frequent charging cycles.

BODY

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

BLADDER

Prior to performing any maintenance or system modifications, exercise CAUTION to bleed off any stored system pressure by depressing the brake pedal 30-40 times.

HYDRAULIC CONNECTION

ACCU-

9.2

POPPET (Seats against oil port after oil evacuation)

ACCUMULATOR (BLADDER TYPE)

Tigercat 630 Skidder

Brakes

CHECKING THE GAS PRE-CHARGE PRESSURE

•

Close the shut-off valve frequently and check the value of the pre-charge by depressing the button on the charging device and observe the gauge.

•

If the pre-charge pressure is too high, it may be reduced by opening the drain valve and carefully depressing the button on the charging device.

Bleed off the system pressure as stated earlier.

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

Install the charging and testing device onto the gas valve. While depressing the button on the charging device, observe gas pressure reading on gauge.

Note: The pre-charge pressure will vary dependant upon the temperature. Once the desired pre-charge is reached, wait two minutes for the gas temperature to equalize.

Re-check pre-charge and adjust if necessary.

If the gas pre-charge is low, investigate cause and correct. Possible causes of lost pre-charge pressure include leaking or damaged gas valve, or damaged bladder.

WARNING

•

Disconnect hose from nitrogen bottle.

•

Remove charging and testing device from accumulator and install valve cap and guard, torque to 175-350 lbf/ins.

•

Check to ensure there are no leaks, if gas valve is leaking, it should be replaced. Use only valves approved for accumulator service. NEVER USE AN AUTOMOTIVE TYPE VALVE.

The accumulator must not be altered. DO NOT weld or machine the pressure vessel.

CHARGING THE ACCUMULATOR

WARNING USE ONLY NITROGEN for charging accumulators, NEVER USE OXYGEN OR AIR, due to the risk of explosion.

NOTE: A detailed instruction sheet is provided with the charging and testing device. The following is only a suggested guide.

NITROGEN BOTTLE HOSE*

PRESSURE GAUGE*

ADAPTER* ADAPTER* ACCUMULATOR ASSEMBLY PART NO. 90254 INCLUDES PARTS SHOWN * ACCU-2

CHARGING AND TESTING DEVICE

•

Close the drain valve on the charging and testing device and connect the hose to the nitrogen bottle.

•

Remove the valve guard and cap.

•

Screw the charging and testing device onto the gas valve.

•

Open the gas shut-off valve on the nitrogen bottle and allow gas to flow slowly into the accumulator.

9.3

Tigercat 630 Skidder

Brakes

MULTIFUNCTION VALVE THE MULTIFUNCTION VALVE PROVIDES THE FOLLOWING: 1.

High pressure relief for the main hydraulic Pump.

2.

The two solenoid pilot valves direct pressure from the main pump to operate the differential locks.

3.

ENGINE, RH SIDE

•

(PUMP PRESSURE) GAUGE TEST PORT 'P3' (DIFF LOCKS) GAUGE TEST PORT 'RP1'

•

• ••

Supplies system pressure oil for the emergency braking system (accumulator and brakes in front axle).

4.

HIGH PRESS. RELIEF VALVE

•

•

•

630-PH1

It also serves as a distribution point for oil to the grapple, dozer and winch functions.

AW110

PRESSURE REDUCING VALVE SEQUENCE MULTIFUNCTION VALVE VALVE

& TEST PORT LOCATIONS (EARLIER MACHINES)

Note: The pressure reducing valve, sequence valve and relief valves on the multifunction valve are set by loosening the locknut and turning the adjusting screw OUT (counter-clockwise) to reduce the pressure setting and IN (clockwise) to increase the pressure setting.

RP1 TEST PORT

P3 TEST PORT

•

•

275-3

TEST PORT COMPARTMENT BELOW CAB DOOR (LATER MACHINES)

1 SOLENOID VALVE(S) 90016

2

1

3

SEQUENCE VALVE

PRESSURE REDUCING VALVE

AW108-2

•

•

91983

AW108-1

4 HIGH PRESS.

RELIEF VALVE

'A'

•

• •

•

•

•

AW110

(ACCUMULATOR) GAUGE TEST PORT 'P5'

4

(PUMP PRESSURE) GAUGE TEST PORT 'P3' (EARLY MACHINES)

•

•

3

2 VIEW 'A'

4

MULTIFUNCTION VALVE 9.4

(DIFF LOCKS) GAUGE TEST PORT 'RP1' (EARLY MACHINES)

DIRECTIONAL VALVE

Tigercat 630 Skidder

Brakes

1. HIGH PRESSURE RELIEF

a. Turn the high pressure relief valve on the multifunction valve IN all the way (clockwise) until lightly seated.

The multifunction valve manifold is used as a connection/distribution point for the high pressure oil from the main hydraulic pump. A high pressure relief valve (set at 3500-3600 psi) is installed in this manifold to divert excess oil back to tank.

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck in the fully stroked position. Back off the adjusting screw if the pressure rises above 3600 psi and investigate the main pump for proper operation.

HIGH PRESSURE RELIEF VALVE PRESSURE REDUCING VALVE

b. Turn the main pump POR to 3850-3900 psi on 'P3' gauge using the pressure adjusting screw on the side of the pump. (through the cover plate hole)

SEQUENCE VALVE

• • •

HOSES REMOVED FOR CLARITY

MULTIFUNCTION VALVE (SHOWN ON LATER MACHINES)

DIG-004

TO ADJUST HIGH PRESSURE RELIEF VALVE AND MAIN PUMP PRESSURE: 1.

Parking brake ON, grapple down, dozer down and shut off the engine.

2.

Connect a 0-5000 psi gauge to the ‘P3’ test port.

3.

Remove the cover plate on the right, front side of the engine cover.

4.

Ensure that the hydraulic oil is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

5.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

6.

It is necessary to temporarily increase the pressure of the main pump to 3850-3900 psi.

•

7.

Reset the high pressure relief valve to 35003600 psi on 'P3' gauge.

8.

Reset the pump POR to 3000-3100 psi on 'P3' gauge, using the adjusting screw on the side of the pump.

9.

Turn off the engine, remove the gauge, install the cap on the port and replace the cover plate.

2. DIFFERENTIAL LOCKS The differential locks in both front and rear axles are controlled by two switches located on the control panel in the cab. The switches control two solenoid pilot valves in ports ‘C1’ and ‘C2’ of the multifunction valve manifold. Placing the switch(es) in the ON position energizes the solenoid pilot valve(s) which direct pilot oil to the differential lock clutch packs in one or both axles to lock the differentials and provide drive torque to both wheels.

The pressure reducing valve supplies oil through the directional valve and the two solenoid valves to the differential locks at a reduced pressure of 625 psi. If the pressure rises above 750 psi the sequence valve sends a pilot signal to the directional valve, which closes and cuts-off the oil supply to the differential locks, preventing problems due to high pressures.

MAIN PUMP P.O.R. ADJUSTING SCREW

TO ADJUST DIFFERENTIAL LOCK VALVES:

630-PH2

1.

Parking brake ON, grapple down, dozer down and shut off the engine.

2.

Connect a 0-1000 psi gauge to the ‘RP1’ test port.

HOSES REMOVED FOR CLARITY

MAIN PUMP - DOZER, STEER & GRAPPLE

Continued on page 6

9.5

Tigercat 630 Skidder

Brakes

Continued from page 5

3.

TO CHECK ACCUMULATOR AND BRAKE PILOT VALVE

Ensure that the hydraulic oil is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

4.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

Turn OFF the Differential Locks.

5.

Temporarily turn the sequence valve (closest to the mounting surface) on the multifunction valve, all the way IN, very carefully, until it just touches bottom. Do not over tighten.

1.

Parking brake ON, grapple down, dozer down and shut off the engine.

2.

Press the brake pedal 30 to 40 times to release the pressure stored in the accumulator.

CAUTION Serious injury can result if this is not done.

3.

Connect a 0-5000 psi gauge to the ACCUM test port in the test port compartment. (On earlier machines remove the plug and install a fitting in the 'P5' port on top of the multifunction valve and connect the gauge.)

4.

Ensure that the hydraulic oil temperature is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

5.

Start the engine and run for 10 seconds, then shut it off. The pressure should rise rapidly to 3000 psi and start to fall when the engine is shut off. The accumulator is now holding pressure for the braking system.

6.

There will be a slow drop in pressure as the accumulator drains, through valve leakage in the system. The pressure should not drop below 1500 psi in the first 5 minutes.

Leakage rate will be rapid at first and will slow down as the pressure drops.

7.

Start and run the engine for a further 10 seconds and shut it off, to recharge accumulator. Pump the brakes 5 times, the pressure should remain above 800 psi. It should take 5 or more additional (total of 10 or more) brake applications to drain the accumulator from a full charge of 3000 psi.

8.

Remove the gauge and fitting and reinstall the plug in the port.

This oil from the accumulator side of the check valve is sent, through an orifice at port 'B' to the brake pilot valve.

4.

DISTRIBUTION POINT TO GRAPPLE, DOZER AND WINCH FUNCTIONS

NOTE: The accumulator will hold sufficient pressure, after the engine is turned off, for up to 5 brake applications, beyond this the pressure drops substantially.

Pressure port 'P1' supplies oil to the priority valve which in turn feeds the steer, grapple and dozer control valves.

6.

Adjust the pressure reducing valve (beside sequence valve) to get 750-760 psi on 'RP1' gauge.

7.

Re-adjust sequence valve OUT, until the pressure (at RP1 gauge) rapidly drops to near ZERO. Turn it back IN until the pressure rises to 750-760 psi and then VERY SLOWLY turn it back OUT until it drops to near ZERO. Lock it at this point.

8.

Re-adjust the pressure reducing valve OUT to get 625-635 psi at 'RP1'gauge. Lock it at this point.

9.

Engine off, remove gauge and install cap on port.

3.

EMERGENCY BRAKING SYSTEM (ACCUMULATOR AND BRAKES IN FRONT AXLE)

The main pump supplies oil directly to the accumulator, via a check valve inside the multifunction valve manifold and out through port 'A', charging the accumulator to a pressure of 3000psi.

The accumulator is installed to ensure that the brake control remains responsive at all times by maintaining an optimum pilot pressure of 3000psi to the brake pilot valve.

For information on the STEER, GRAPPLE AND DOZER CIRCUITS, refer to the appropriate sections in THIS SERVICE MANUAL.

Refer to BRAKE PILOT VALVE and ACCUMULATOR in THIS SECTION for further information on this brake valve and the accumulator.

9.6

Tigercat 630 Skidder

630-08

Brakes

BRAKE/DIFFERENTIAL LOCK CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 9.7

Tigercat 630 Skidder

630-24

Brakes

BRAKE/DIFFERENTIAL LOCK CIRCUIT SERIAL NUMBERS 6300401 TO 6300610 9.8

Tigercat 630 Skidder

630-25

Brakes

BRAKE/DIFFERENTIAL LOCK CIRCUIT SERIAL NUMBERS 6300611 TO 6300999 9.9

Tigercat 630 Skidder

Brakes

PARKING BRAKE A parking brake lever is located in the cab to the left of the drivers seat. It is connected by a cable to a disk brake calliper assembly mounted on the rear axle output shaft of the transmission.

The parking brake operates ONE of the TWO disc brake callipers on the transmission rear axle output shaft.

The SECOND, AUXILIARY SET-UP Calliper is used in setting up the hydraulics on the machine and when not being used, should be loose and locked with a cotter pin. Friction between the brake calliper and the rotating brake disc can cause a fire.

Pulling up on the parking brake lever applies the brake. Pushing down on lever releases the brake.

Spring force in the calliper assembly holds the brake pads away from the disk.

ADJUSTING KNOB

•

21-2AA

There are two ways to adjust the parking brake to compensate for wear; (1) Turning the knob on the end of the brake lever or, (2) at the calliper by loosening the jamnut on the cable clevis, removing the clevis and screwing the clevis further onto the cable end.

The brake is correctly adjusted when resistance is encountered half way through the brake lever's free travel.

A limit switch (earlier machines )/ proximity switch (later machines), part of a drive prevent circuit, is attached to the brake lever housing. When the brake lever is in the ON position the limit/proximity switch contacts are CLOSED. When the brake lever is in the OFF position the limit/proximity switch contacts are OPEN. The drive prevent circuit prevents the machine from being driven when the parking brake is ON.

9.10

Tigercat 630 Skidder SECTION 10 - OIL COOLER DECEMBER 1999

CONTENTS - SECTION 10 CIRCUIT DESCRIPTION AND OPERATION SERIAL NUMBERS 6300101 TO 6300400 ......................................... 10.3 SERIAL NUMBERS 6300401 TO 6300999 ......................................... 10.3 CIRCUIT DIAGRAM SERIAL NUMBERS 6300101 TO 6300400 ......................................... 10.4 SERIAL NUMBERS 6300401 TO 6300999 ......................................... 10.5 OIL COOLER DESCRIPTION ............................................................ 10.2

Tigercat 630 Skidder

Oil cooler

OIL COOLER

The debris screen is removable for cleaning. The A/C condenser can be swung out of the way to see the back side of the oil cooler. On later machines the condenser can be lifted from its hinges to provide additional access for cleaning.

The front side of the oil cooler can be checked through the space between the cooler and radiator, behind the rubber baffle.

The hydraulic oil cooler is mounted between the engine radiator and the air conditioner condenser coil. A debris screen is used to protect the assembly. The engine fan draws air through the screen, then through the A/C condenser, then through the oil cooler and then through the engine radiator and blows it across the engine.

The debris screen should be checked frequently and cleaned when required. The areas between the condenser, oil cooler and radiator should be checked frequently, depending on operating conditions.

OIL COOLER

PLENUM

OIL COOLER 'OUT' CONNECTION TO DOUBLE FILTER

•

•

•

RADIATOR

DEBRIS SCREEN

•

RUBBER BAFFLE

•

• RADIATOR TOP HOSE FAN SHROUD

•

FAN FINGER GUARD

•

• •

A/C CONDENSER

• ENGINE

• RUBBER BAFFLE

• • • RADIATOR BOTTOM HOSE

6496BIL2

RADIATOR AND OIL COOLER MOUNTS

RADIATOR AND OIL COOLER INSTALLATION 10.2

NOTE: REGULARLY CHECK FOR DEBRIS ACCUMULATION BETWEEN RADIATOR AND OIL COOLER, OIL COOLER AND A/C CONDENSER AND BETWEEN SCREENS AND A/C CONDENSER

Tigercat 630 Skidder

Oil cooler

OIL COOLER CIRCUIT DESCRIPTION AND OPERATION

DOUBLE ELEMENT FILTERS RESERVOIR

SERIAL NUMBERS 6300101 TO 6300400 Oil for the entire hydraulic system first passes through the oil cooler. The oil cooler is situated down stream from the cooling pump. The cooling pump draws oil from the reservoir and sends it to the oil cooler. From the oil cooler it passes through the double element filter and on to a distribution manifold located in the front chassis on the right inside wall.

The manifold consists of two main work ports and five return (tank) ports. The last tank port is connected to the hydraulic tank, thus completing a "loop" allowing cooled surplus oil to be returned to the reservoir.

• FROM OIL COOLER

••

••

•

CHARGE PRESSURE OUTLET FILTER

COOLING PUMP SUCTION LINE

••

••

The main pump and the drive pump suction lines are connected to the two work ports in the manifold and will draw oil as and when required to perform machine functions such as operate the grapple or drive.

TO DISTRIBUTION MANIFOLD

••

The four tank ports in the manifold collect return oil (case drain) from the two drive motors and the drive pump and also return oil from the dozer valve.

COOLING PUMP 284-21A

PUMPS

•• COOLING PUMP TO OIL COOLER CONNECTION

Oil is added to the hydraulic reservoir through the reservoir shut-off valve on the right side of the engine compartment using the hand fill pump.

This oil is pumped through the dual element filter and the distribution manifold on its way to the reservoir.

The main pump and the drive pump suction lines are connected to the two work ports in the manifold and will draw oil as and when required to perform machine functions such as operate the grapple or drive.

Oil entering the hydraulic reservoir passes through 2 strainers situated inside the reservoir below the oil surface.

The three tank ports in the manifold collect return oil from the front chassis pilot return manifold, the drive pump and from the dozer valve.

For more information on the hydraulic reservoir, refer to HYDRAULIC OIL RESERVOIR in SECTION 2 of the OPERATOR'S MANUAL.

Oil is added to the hydraulic reservoir using the hydraulic rotary hand fill pump located in the step compartment on the right side of the machine.

This oil is pumped through the hydraulic oil fill filter element and directly into the reservoir.

SERIAL NUMBERS 6300401 TO 6300999 Oil for the entire hydraulic system first passes through the oil cooler. The oil cooler is situated down stream from the cooling pump. The cooling pump draws oil from the reservoir and sends it to the oil cooler. From the oil cooler it passes through the double element filter and on to a distribution manifold located in the front chassis on the right inside wall.

The manifold consists of two main work ports and four return (tank) ports. The last tank port is connected to the hydraulic tank, thus completing a "loop" allowing cooled surplus oil to be returned to the reservoir.

10.3

Oil entering the hydraulic reservoir passes through 2 strainers situated inside the reservoir below the oil surface.

For more information on the hydraulic reservoir, refer to HYDRAULIC OIL RESERVOIR in SECTION 2 of the OPERATOR'S MANUAL.

Tigercat 630 Skidder

630-10

Oil cooler

OIL COOLER CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 10.4

Tigercat 630 Skidder

630-26

Oil cooler

OIL COOLER CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 10.5

Tigercat 630 Skidder

Oil cooler

10.6

Tigercat 630 Skidder SECTION 11 - STEERING AND CENTER JOINT DECEMBER 1999

CONTENTS - SECTION 11 CENTER JOINT ADJUSTMENT ................................................................... 11.8 CHECKING ........................................................................ 11.8 DIAGRAM .......................................................................... 11.9 GREASE SEALS ............................................................... 11.9 LUBRICATION ................................................................... 11.8 MAINTENANCE ................................................................. 11.8 CIRCUIT DIAGRAM (6300101 TO 6300400) ........................ 11.6 CIRCUIT DIAGRAM (6300401 TO 6300999) ........................ 11.7 PRIORITY VALVE .................................................................. 11.4 STEER CONTROL VALVE .................................................... 11.2 TESTING THE STEERING OPERATION .............................. 11.5

Tigercat 630 Skidder

Steering and Center Joint

STEERING STEER CONTROL VALVE This is a manually operated directional control valve. The steering wheel is directly connected to the steer valve through the floor of the cab.

The use of load sensing power steering and a priority valve provides smooth pressure compensated steering that is unaffected by axle response or steering rate.

The output flow of the steering control unit varies with the speed that the steering wheel is rotated.

When moving the wheel slowly the output of the steering control is low, causing the machine to steer slowly. When the wheel is turned rapidly the output of the steering control is high, causing the machine to steer much faster.

186-25

Fast steering (turning the steering wheel rapidly) is necessary when operating in the woods to provide the required maneuverability.

STEER CONTROL VALVE (BELOW CAB)

the other workport, through the spool/sleeve assembly and back to tank. A load sense line, between the steering valve and priority valve, drains oil out of the load sense port in the priority valve. The oil drains to tank through an orifice located between the sleeve and gerotor on the steer valve.

Travelling on the road requires a slower steering response (turning the steering wheel slowly), making it easier to make minor corrections when travelling in a straight line.

The cylinder ports 'L' and 'R' contain built-in cylinder port relief valves and anti-cavitation valves to protect against pressure surges created by ground forces on the steered axle and vacuum (cavitation) conditions.

When the steering wheel has stopped moving, the gerotor gear continues to move and turns the sleeve until the sleeve moves to its center (neutral) position and stops sending oil to the gerotor. The valve is no longer sending oil to the cylinders.

OPERATING DESCRIPTION

The speed that the steering wheel is rotated, determines the speed that the machine will turn.

Turning the steering wheel slowly causes the variable orifice to decrease in size and it will take more turns of the wheel from stop to stop. If the wheel is turned quickly the orifice opens and it will take fewer turns of the wheel from stop to stop.

The steering control valve has a spool that is able to rotate inside a sleeve. When the steering wheel is stationary, the unit is in the neutral position and the spool is aligned in the sleeve so that oil cannot flow through the valve. The steering cylinders to the rear chassis are prevented from moving by the oil that is trapped on both sides of the pistons.

The cylinder port relief valves are factory set to 3850 psi.

When the steering wheel is turned, the spool rotates inside the sleeve and opens passages to allow oil flow through the spool/sleeve assembly.

This oil flows to the Gerotor section of the valve, causing the gerotor to rotate and then continues back into the valve and out the workport to the end of each steer cylinder.

There is a small, variable bypass orifice in the spool/sleeve assembly that allows a small amount of oil into the pressure side of the steering valve.

This will suppress the initial pressure surge when the steering wheel is partially turned. The orifice is closed off when the wheel is fully turned.

The return oil from the cylinders, enters back in 11.2

Tigercat 630 Skidder

Steering and Center Joint 'LS' LOAD SENSING PORT 'P' PRESSURE

'R' RIGHT 'L' LEFT

• ••

'T' TANK P

R

L

T

P

R

L

T

•

•• STEERING COLUMN CONNECTION

CROSS SECTION OF CYLINDER PORT RELIEF VALVE VALVES

LEFT

RIGHT PUMP IN

PUMP RETURN (TANK)

•R

•

•T

L

•P

HOUSING

• BEARING

SPOOL

• •

•

•

•

• • •

•

STEERING COLUMN CONNECTION

• • CENTERING SPRINGS

AT027-1

SLEEVE

PIN

CHECK VALVE

DRIVE

STEER CONTROL VALVE 11.3

WEAR PLATE

•

GEROTOR SPACER RING AND STAR

END CAP

Tigercat 630 Skidder

Steering and Center Joint

PRIORITY VALVE P

The priority valve receives hydraulic oil from the main hydraulic pump via the 'P1' port on the multifunction valve manifold.

T

The oil then passes through the priority valve, where it is divided up to go to either the steer valve and on to the steer cylinders, or the grapple, dozer or winch functions.

LS

The priority valve is a feature that allows the steer circuit to have first call on oil before the grapple, dozer or winch circuit.

This control is accomplished by a load-sensing feedback circuit from the steer valve to the priority valve.

EF

By splitting the system into two independent circuits, pressure transients are isolated in each circuit and only the flow required for steering goes to the steering circuit. The remaining flow is available for the grapple, dozer and winch functions. This provides safe, reliable operation because the steering circuit always has flow and pressure priority.

CF

PRIORITY VALVE

AT028-2

RELIEF VALVE CARTRIDGE

OIL 'IN' FROM MULTIFUNCTION VALVE P

RETURN OIL TO TANK

•

T

When full oil flow is not required for steering the excess supply of oil is directed to the other circuits.

AT028-1

LS

• LOAD SENSE CONNECTION TO STEER VALVE

Backflow into the steering system is prevented by a check valve in the steer control valve.

The priority valve contains a built-in relief valve which is factory set to 2750 psi. When this relief setting is exceeded, most of the flow will be directed to the auxiliary circuit (EF).

EF HIGH PRESSURE CARRYOVER TO GRAPPLE, WINCH AND DOZER VALVES AT028

PRIORITY VALVE

SYSTEM DIAGRAM

11.4

CF TO STEER VALVE

Tigercat 630 Skidder

Steering and Center Joint

TESTING THE STEERING OPERATION: 1.

Move the skidder to a suitable, level and smooth test area, where it can be safely operated at full throttle. Grapple UP, CLOSED and ROTATED TO CENTER. Dozer blade UP.

2.

With the parking brake OFF, differential locks OFF, NO service brakes applied and full throttle, turn the steering completely one way until it hits the stop..

3.

Turn the steering wheel the opposite way, as SLOWLY as possible, until it hits the end stop. This should take 7 1/2 to 8 turns of the wheel.

4.

Turn the wheel back to the other end stop, very slowly to verify the 7 1/2 - 8 turns.

5.

Turn the wheel back to the other end stop, as fast as possible. Resistance to turning the wheel will be felt during this operation.

This should take 3 1/2 to 4 turns of the wheel.

6.

Turn the wheel back to the other end stop, as fast as possible to verify the 3 1/2 - 4 turns.

7.

If these values are not obtained, check the priority valve and/or steering control unit.

11.5

Tigercat 630 Skidder

630-06

Steering and Center Joint

STEER CIRCUIT - EARLIER MACHINES SERIAL NUMBERS 6300101 TO 6300400 11.6

Tigercat 630 Skidder

630-27

Steering and Center Joint

STEER CIRCUIT - EARLIER MACHINES SERIAL NUMBERS 6300401 TO 6300999 11.7

Tigercat 630 Skidder

Steering and Center Joint

CENTER JOINT

5.

Fully loosen only the 6 bottom pin retainer bolts (item 2) that were torqued in step 2.

DO NOT REMOVE BOLTS.

MAINTENANCE OF CENTER JOINT Maintenance in this area is usually limited to: a)

b)

Regular lubrication of the two center joint grease fittings (item 11) to purge the pivot bearings of debris and water. Refer to SCHEDULED MAINTENANCE in THIS SECTION for lubrication intervals. Use only high quality, lithium based EP2 grease containing molybdenum disulphide.

DIAL INDICATOR PLUNGER

••

DIAL INDICATOR BASE

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

DIG-06

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

6.

3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked.

With dial indicator still in place;

1000 HOUR CHECK

Place the magnetic base of a dial indicator on the top surface of the rear chassis lower lug 'A' as close to the center pin as possible.

4.

Partially depress the plunger end of the dial indicator against the bottom surface of the rear chassis upper lug 'B' as close to center pin as possible. Zero the dial indicator.

Remove all bottom pin retainer bolts (item 2), the bottom pin retainer plate (item 3) and all of the shims in the shim pack (items 10).

CAUTION: Keep upward pressure on the bottom pin (item 9) and do not allow pin to fall out from bearing. These pivot pins are very heavy, block the pin in place if necessary.

CHECKING THE CENTER JOINT PRELOAD 1. Park the machine on level ground. Set parking brake ON, grapple and dozer blade UP and shut off engine.

3.

The dial indicator should now show a change of 0.008" to 0.012" between lug 'A' and 'B'.

CENTER JOINT PRELOAD ADJUSTMENT Before making any adjustments to the center joint, please follow CHECKING THE CENTER JOINT BEARING procedure in THIS SECTION.

7.

Torque the 6 top and 6 bottom retainer bolts (items 1 and 2) to 282 - 310 lbf-ft.

CHECK PRELOAD

A change of less than 0.008" indicates that the bearing preload is too low. No change on the dial indicator is the result of a loose center joint. In these cases, proceed to CENTER JOINT PRELOAD ADJUSTMENT.

FRONT CHASSIS

2.

• A

This is the proper bearing preload setting.

REAR CHASSIS

DIG-003

DIAL INDICATOR

REAR CHASSIS

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

CHECK FOR MOVEMENT IN THIS JOINT AREA

FRONT CHASSIS

B •

8.

Remove the thinnest shim from the pack.

9.

Reinstall the remaining shims, the retainer plate and the bolts. Leave the bolts loose.

10. Zero the dial indicator again and torque the 6 bottom bolts in sequence to 282-310 lbf-ft.

11. A change of 0.008" to 0.012" should register on the dial indicator.

11.8

Tigercat 630 Skidder

Steering and Center Joint ORIENTATION OF GREASE SEALS The pivot bearings (item 4) are sealed on both sides by grease seals (items 5 and 6). These seals have proven to have a long life.

This is the proper bearing preload setting. a)

b)

c)

If change in dial indicator reading is greater than 0.012", the shim removed (in step 8) may not have been the thinnest shim in the pack. Repeat steps 7 through 11, replacing this shim and removing only the thinnest shim from the bottom shim pack (item 9).

If replacement becomes necessary, new seals must be installed in the proper orientation. Refer to the center joint diagram and follow these guidelines for correct installation;

If the change in the dial indicator reading is less than 0.008", another shim will have to be removed. Repeat steps 7 through 11, removing additional shims but only the thinnest shim each time, until the change in the reading on dial indicator is within the proper range.

•

The two seals installed on either side of the top and bottom bearings must be installed with the seal lips facing away from the bearings.

Apply blue 243 Locktite (removable) and torque the six bolts (item 7) for the bearing retainer plate (item 8) to 80 - 88 lbf-ft.

It is possible that the total thickness of two shims is too great and a single shim, of lesser thickness than these two, must be removed.

TORQUE TO 282 - 310 LBF-FT. NO LOCKTITE REQUIRED

1

•

1

3

6

5 4

**

BOLT TIGHTENING SEQUENCE

2

11

•

FRONT CHASSIS

GREASE SEALS WITH SPRINGS FACING UPWARD

11 **NOTE:

• •

FOR EARLIER MACHINES THE GREASEFITTINGS WERE LOCATED HERE. LATER MACHINES INCORPORATE THE GREASE FITTINGS IN THE SEAL HOUSING AND AS SHOWN.

REAR CHASSIS

•

GREASE SEALS WITH SPRINGS FACING DOWN

5476BIL3

4 5

• ** 11

• • •

6

• • • •

•

8

9 10 3 2 TORQUE TO 282 - 310 LBF-FT. NO LOCKTITE REQUIRED

•

7 TORQUE TO 80 - 88 LBF-FT. USE 243 LOCKTITE (REMOVABLE)

CENTER JOINT 11.9

Tigercat 630 Skidder

Steering and Center Joint

11.10

Tigercat 630 Skidder SECTION 12 - GRAPPLE, ARCH AND BOOM JANUARY 2000

CONTENTS - SECTION 12 CIRCUIT DESCRIPTION ARCH .......................................................................................................... 12.5 ARCH/BOOM ............................................................................................. 12.11 GRAPPLE OPEN/CLOSE .......................................................................... 12.19 GRAPPLE ROTATE (6300101 TO 6300400, ESCO GRAPPLE) ................ 12.18 GRAPPLE ROTATE (6300401 TO 6300999, TC GRAPPLE) ...................... 12.18 CIRCUIT DIAGRAMS ARCH/BOOM 6300101 TO 6300400 .......................................................... 12.12 ARCH/BOOM 6300401 TO 6300999 .......................................................... 12.13 GRAPPLE 6300101 TO 6300400 ............................................................... 12.20 GRAPPLE 6300401 TO 6300999 ............................................................... 12.21 SINGLE ARCH 6300101 TO 6300400 ......................................................... 12.6 SINGLE ARCH 6300401 TO 6300999 ......................................................... 12.7 GRAPPLE CONTROL VALVE DUAL FUNCTION ARCH SECTION .......................................................... 12.10 GRAPPLE ROTATE AND OPEN/CLOSE SECTIONS ................................ 12.16 SINGLE FUNCTION ARCH SECTION ........................................................ 12.4 GRAPPLE SNUBBER MAINTENANCE ........................................................ 12.23 JOYSTICK CONTROL VALVE, ARCH AND GRAPPLE .................................. 12.3 PORT RELIEF VALVE DESCRIPTION (GRAPPLE VALVE) .......................... 12.24 ADJUSTING PROCEDURE ....................................................................... 12.23 PRESSURE SETTINGS DUAL ARCH/BOOM .................................................................................. 12.15 GRAPPLE ROTATE .................................................................................. 12.22 GRAPPLE OPEN/CLOSE .......................................................................... 12.22 SINGLE ARCH ............................................................................................ 12.5

Tigercat 630 Skidder

Grapple, Arch and Boom

12.2

Tigercat 630 Skidder

Grapple, Arch and Boom

JOYSTICK CONTROL VALVE

OPERATING DESCRIPTION

ARCH - SINGLE AND DOUBLE

In the neutral position the joystick lever is held centered by return spring (4).

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

Both the joystick and foot control valves use similar spool arrangements.

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

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

This joystick control valve directs pilot pressure to the pilot end caps of the boom and arch sections of the grapple control valve. The corresponding spool valve then shifts from its center position and directs pump flow to operate a cylinder.

When the regulating stroke begins, there is a connection from port 'P' via hole (8) in the spool and work ports 1, 2, 3 or 4 in the base of the valve, to the grapple valve pilot end caps.

Flow is directly proportional to the operator position of the joystick and the regulating spring characteristic.

The handle incorporates push button control switches and a trigger switch. The two push buttons at the top left are for the grapple rotate function and the two bottom push buttons are for the grapple arm open/close function. (Earlier versions of the joystick had two rocker switches one for grapple rotate and one for grapple open/ close). The trigger switch is used to apply constant pressure to the closed grapple arms.

T

P

•

5

• •

4

•

2

3

•

1

•

• • •

•

8

'P' port

AU013-1

1

•

•

WORK PORTS 1, 2, 3 OR 4

SPOOL ARRANGEMENT

AU013-2

••

•• •••

5

T

•

4 3 8 2

T 5858AX

12.3

P

2

JOYSTICK PILOT VALVE

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE CONTROL VALVE

*NOTE: There are several variations of the grapple control valve in use, depending on whether the machine has a single or dual function arch and whether a winch is included.

SINGLE FUNCTION ARCH SECTION The grapple control valve consists of four* open center spool sections, used in a closed circuit application ( three* sections if a winch is not used), with one end inlet section that is used as an oil inlet and outlet. Each spool section is pilot operated.

A dual function arch and a winch will both add a section to the grapple control valve, making it either a four or five section valve. If the machine has a winch and no arch it will be a single section valve.

The closed circuit application, using open circuit spool sections, is accomplished by blocking the power beyond carry-over port using a special power beyond plug.

When a spool is activated, oil enters the inlet section, passes through the spool section and out to the function. The return oil from the function flows back to the valve, through the spool and back to tank via the tank port.

FRONT OIL OUT

OIL IN INLET SECTION

FRONT GAUGE TEST PORT

• •

• •

OUT PORT RELIEF B

WINCH

A

B

ARCH

A

OUT PORT RELIEF

OIL OUT

• •

• •

IN PORT RELIEF

•

•

B

ARCH

A

B GRAPPLE

A

B

A

B

ROTATE

A

ROTATE

OUTLET SECTION

GRAPPLE CONTROL VALVE (single function arch)

RELIEF VALVE PORT 'b'

LOAD CHECK VALVE

AT038XX

•

GRAPPLE CONTROL VALVE (single function arch - no winch)

PARALLEL PASSAGE

WORK PORT BRIDGE

RELIEF VALVE PORT 'a'

A

B

•

• • •

•

• PILOT END CAP

•

•

•

•

SPOOL

THRU' NEUTRAL PASSAGE TANK PASSAGE

90136-3

•

A

B GRAPPLE

•

OUTLET SECTION

GAUGE TEST PORT OIL IN

IN PORT RELIEF

•

AT038IL2

INLET SECTION

CROSS SECTION OF SPOOL SECTIONS WITH PORT RELIEFS 12.4

SPOOL CENTERING SPRING

• PILOT END CAP

Tigercat 630 Skidder

Grapple, Arch and Boom

Each of the spool sections has a self centering 3position spool which is open centered, but operating in a closed circuit application. A spring in the spool end cap holds the spool in the center neutral position. The spool is shifted by pilot pressure being applied to either end of the spool.

Shifting the spool directs oil to operate its function.

If other spools are operated simultaneously the flow will be split between the operating functions, resulting in reduced flow to each.

To prevent over pressurizing of the operating circuits, some of the work ports in the valve sections have a PORT RELIEF VALVE. All relief valves are anti-cavitation relief valves.

For a detailed description of these relief valves, refer to RELIEF VALVES in THIS SECTION.

ARCH CIRCUIT CIRCUIT DESCRIPTION The control valve is located on the rear chassis above the rear axle and under the cover plate.

Two cylinders are used to RAISE and LOWER the ARCH. The cylinders receive oil from the main pump via the arch spool section in the grapple control valve.

The spool section in this control valve is pilot operated at both ends. It receives pilot oil from the joystick control valve in the operator's cab to shift the spool. The spool directs oil from the pump to either end of the cylinders and from the cylinders back to tank via the dozer valve.

FRONT OIL IN

OIL OUT GAUGE TEST PORT

INLET SECTION

•

•

•

WINCH IN PORT

•

ARCH IN PORT RELIEF

ARCH OUT PORT RELIEF

B

WINCH

A

B

ARCH

A

B

GRAPPLE

A

ROTATE

A

•

•

•

•

•

GRAPPLE OPEN PORT RELIEF

•

B

• GRAPPLE CLOSE PORT RELIEF

GRAPPLE CLOCKWISE ROTATION PORT

AT038IL2

OUTLET SECTION

•

GRAPPLE COUNTERCLOCKWISE ROTATION PORT

GRAPPLE CONTROL VALVE (single function arch) 12.5

Tigercat 630 Skidder

630-01

Grapple, Arch and Boom

SINGLE ARCH CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 12.6

Tigercat 630 Skidder

630-29

Grapple, Arch and Boom

SINGLE ARCH CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 12.7

Tigercat 630 Skidder

Grapple, Arch and Boom

SINGLE ARCH PRESSURE SETTINGS 'P3'

WARNING

•

Do not stand above or below the arch assembly, grapple or between the arch and rear chassis during this procedure.

Before performing work on the arch assembly, lower it to the ground and/or use proper support devices.

TEST PORT COMPARTMENT BELOW LEFT CAB DOOR (LATER MACHINES ONLY)

275-3

CAUTION

HIGH PRESSURE RELIEF VALVE

Avoid blowing oil over the relief for longer than 5 seconds, as this will cause excessive heating of the hydraulic fluid and possible damage to hydraulic components.

PRESSURE REDUCING VALVE SEQUENCE VALVE

• •

WARNING Use caution when working on top of the rear chassis, as there are many pinch areas between the arch, arch cylinders and winch. DO NOT move arch when workers are in this area.

• DIG-004

IMPORTANT: Approach the gauge reading slowly and deliberately by turning adjusting nut IN a little at a time. The pressure settings must not exceed the designated values.

Do not work under the arch without properly supporting the arch/grapple assembly.

NEVER move the arch/grapple assembly when workers are in this area.

ARCH IN/OUT PORT RELIEF ADJUSTMENT

WARNING Park machine on level ground, stop engine, set parking brake ON, lower dozer and grapple to the ground and block wheels

1.

Park machine on level ground and before shutting off the engine position grapple as described in step 2.

2.

IMPORTANT: To prevent lifting of the rear wheels when the arch is moved out during this procedure it is necessary to position the grapple as follows.

POSITION GRAPPLE FOR ARCH IN/OUT PRESSURE SETTINGS

•

ENGINE, RH SIDE

•

MULTIFUNCTION VALVE (SHOWN ON LATER MACHINES)

*Refer to RELIEF VALVE ADJUSTING PROCEDURE in THIS SECTION.

WARNING

RELIEF VALVE

HOSES REMOVED FOR CLARITY

GAUGE TEST PORT 'P3'

•

AW110

630-PH1

MULTIFUNCTION VALVE & TEST PORT LOCATIONS (EARLIER MACHINES)

308-19

Continued on page 8

12.8

Tigercat 630 Skidder

Grapple, Arch and Boom

Continued from page 7

Close grapple and rotate it to center. Lower grapple slowly to the ground and slowly move the machine backward while continuing to lower the grapple. This will fold the grapple under (towards the machine) and allow the arch to be fully extended in its out position without lifting the rear wheels off the ground.

Take care to avoid damaging hydraulic hoses while positioning the grapple.

3.

Set parking brake ON, dozer blade DOWN and shut off the engine.

4.

Connect a 0-5000 psi gauge to the test port on the grapple control valve, located under the cover plate on the top of the rear chassis.

Connect a 0-5000 psi gauge to the ‘P3’ test port.

5.

Ensure that the hydraulic oil is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

6.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm)

7.

It is necessary to temporarily increase the pressure of the Main Pump to 3850-3900 psi. a.Turn multifunction main relief IN all the way, lightly seated.

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck in the fully stroked position. Back off the adjusting screw if the pressure rises above 3600 psi and investigate the main pump for proper operation. b.Turn main pump P.O.R. (behind cover plate right side of engine) IN to 3850-3900 psi. on the 'P3' gauge.

8.

Make sure that the area is clear.

9.

With the aid of an assistant, operate the arch OUT control and hold pressure.

10. Adjust the arch OUT, port relief valve to give a reading of 2500-2600 psi on the gauge.

11. With the aid of an assistant operate the arch IN control and hold pressure. NOTE: Care must be taken as this will unfold and lift the grapple from the ground.

12. Adjust the arch IN, port relief valve to give a reading of 3500-3600 psi on the gauge.

12.9

13. Readjust multifunction relief valve to 35003600 psi. and then the pump P.O.R. to 30003100 psi.

14. Turn off the engine, remove gauges, reinstall plugs on test ports and replace the cover plates.

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE CONTROL VALVE

*NOTE: There are several variations of the grapple control valve in use, depending on whether the machine has a single or dual function arch and whether a winch is included.

DUAL FUNCTION ARCH SECTION The grapple control valve consists of five* open center spool sections, used in a closed circuit application (four* sections if a winch is not used), with one end inlet section that is used as an oil inlet and outlet. Each spool section is pilot operated.

A dual function arch and a winch will both add a section to the grapple control valve, making it either a four or five section valve. If the machine has a winch and no arch it will be a single section valve.

The closed circuit application, using open circuit spool sections, is accomplished by blocking the power beyond carry-over port using a special power beyond plug.

When a spool is activated, oil enters the inlet section,passes through the spool section and out to the function. The return oil from the function INLET SECTION

FRONT INLET SECTION OIL OUT

OIL IN

•

•

OUT PORT RELIEF

ARCH

B

B GRAPPLE

AT045IL2

A

IN PORT RELIEF

B

WINCH

A

B

ARCH

A

B GRAPPLE

A

ROTATE

A

B

ROTATE A

•

UP PORT RELIEF VALVE

DOWN PORT RELIEF VALVE

•

OUTLET SECTION

GRAPPLE CONTROL VALVE (dual function arch)

AT030IL2

PARALLEL PASSAGE

WORK PORT BRIDGE

RELIEF VALVE PORT 'a'

A

B

•

• • •

•

• PILOT END CAP

•

•

•

•

SPOOL

THRU' NEUTRAL PASSAGE TANK PASSAGE

90136-3

•

•

GRAPPLE CONTROL VALVE (dual function arch - no winch) LOAD CHECK VALVE

•

BOOM

• DOWN PORT RELIEF VALVE

RELIEF VALVE PORT 'b'

• •

•

•

A

BOOM

OUTLET SECTION

• •

IN PORT RELIEF

• UP PORT RELIEF VALVE

GAUGE TEST PORT

OIL OUT

GAUGE TEST PORT

• •

•

B

OUT PORT RELIEF

FRONT OIL IN

CROSS SECTION OF SPOOL SECTIONS WITH PORT RELIEFS 12.10

SPOOL CENTERING SPRING

• PILOT END CAP

Tigercat 630 Skidder

Grapple, Arch and Boom

flows back to the valve, through the spool and back to tank via the tank port.

Each of the spool sections has a self centering 3position spool which is open centered, but operating in a closed circuit application. A spring in the spool end cap holds the spool in the center neutral position. The spool is shifted by pilot pressure being applied to either end of the spool.

Shifting the spool directs oil to operate its function.

If other spools are operated simultaneously the flow will be split between the operating functions, resulting in reduced flow to each.

To prevent over pressurizing of the operating circuits, some of the work ports in the valve sections have a PORT RELIEF VALVE. All relief valves are anti-cavitation relief valves.

ARCH/BOOM CIRCUIT CIRCUIT DESCRIPTION The control valve is located on the rear chassis above the rear axle and under the cover plate.

Two cylinders are used to move the ARCH IN and OUT and two cylinders are used to RAISE and LOWER the BOOM. The cylinders receive oil from the main pump via the arch and boom spool section in the grapple control valve. The spool sections in this control valve are pilot operated at both ends. They receive pilot oil from the joystick control valve in the operator's cab to shift the spool. The spools direct oil from the pump to either end of the cylinders and from the cylinders back to tank via the dozer valve.

For a detailed description of these relief valves, refer to RELIEF VALVES in THIS SECTION. INLET SECTION

OIL IN FRONT

OIL OUT GAUGE TEST PORT

•

•

•

•

WINCH IN PORT

ARCH OUT PORT RELIEF

•

B

WINCH

A

B

ARCH

A

B

GRAPPLE

A

ROTATE

A

•

•

GRAPPLE OPEN PORT RELIEF

•

•B

GRAPPLE CLOSE PORT RELIEF

•

• GRAPPLE COUNTERCLOCKWISE ROTATION PORT

GRAPPLE CLOCKWISE ROTATION PORT

B

BOOM

A

•

BOOM UP PORT RELIEF VALVE

AT030IL2

ARCH IN PORT RELIEF

OUTLET SECTION

•

BOOM DOWN PORT RELIEF VALVE

• GRAPPLE CONTROL VALVE (dual function arch) 12.11

Tigercat 630 Skidder

630-02

Grapple, Arch and Boom

ARCH/BOOM CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 12.12

Tigercat 630 Skidder

630-31

Grapple, Arch and Boom

ARCH/BOOM CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 12.13

Tigercat 630 Skidder

Grapple, Arch and Boom

DUAL ARCH/BOOM PRESSURE SETTINGS 'P3'

•

WARNING Do not stand above or below the arch, boom or grapple assembly, or between the arch/ boom and rear chassis during this procedure.

Before performing work on the arch/boom assembly, lower it to the ground and/or use proper support devices.

TEST PORT COMPARTMENT BELOW LEFT CAB DOOR (LATER MACHINES ONLY)

275-3

CAUTION

HIGH PRESSURE RELIEF VALVE PRESSURE REDUCING VALVE

Avoid blowing oil over the relief for longer than 5 seconds, as this will cause excessive heating of the hydraulic fluid and possible damage to hydraulic components.

SEQUENCE VALVE

• •

WARNING Use caution when working on top of the rear chassis, as there are many pinch areas between the arch, arch cylinders boom, boom cylinders and winch. DO NOT move arch or boom when workers are in this area.

• DIG-004

IMPORTANT: Approach the gauge reading slowly and deliberately by turning adjusting nut IN a little at a time. The pressure settings must not exceed the designated values.

Do not work under the arch or boom without properly supporting the arch/grapple assembly. NEVER move the arch/grapple assembly when workers are in this area.

ARCH IN/OUT PORT RELIEF ADJUSTMENT

WARNING

1.

Set parking brake ON, grapple and dozer DOWN and shut off engine.

2.

Connect a 0-5000 psi gauge to the test port on the grapple control valve, which is located under the cover plate on the top of the rear chassis. Connect a 0-5000 psi gauge to the ‘P3’ test port.

3.

Ensure that the hydraulic oil is at operating temperature is between. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

4.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

5.

It is necessary to temporarily increase the pressure of the Main Pump to 3850-3900 psi.

Park machine on level ground, stop engine, set parking brake ON, lower dozer and grapple to the ground and block wheels

•

ENGINE, RH SIDE

•

MULTIFUNCTION VALVE (SHOWN ON LATER MACHINES)

*Refer to RELIEF VALVE ADJUSTING PROCEDURE in this section.

WARNING

RELIEF VALVE

HOSES REMOVED FOR CLARITY

GAUGE TEST PORT 'P3'

•

a.

Turn multifunction main relief IN all the way, lightly seated.

AW110

630-PH1

MULTIFUNCTION VALVE & TEST PORT LOCATIONS (EARLIER MACHINES) 12.14

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck in the fully stroked position. Back off the adjusting screw if the pressure rises

Tigercat 630 Skidder

Grapple, Arch and Boom in the fully stroked position. Back off the adjusting screw if the pressure rises above 3600 psi and investigate the main pump for proper operation.

above 3600 psi and investigate the main pump for proper operation. b.

Turn main pump P.O.R. (behind cover plate right side of engine) IN to 3850-3900 psi. on the 'P3' gauge.

6.

Make sure that the area is clear, grapple is off the ground, closed and rotated to center position.

7.

With the aid of an assistant, operate the arch IN control and hold pressure.

8.

Adjust the arch IN, port relief valve to give a reading of 3500-3600 psi on the gauge.

9.

Move the arch OUT (adjust the boom UP to prevent the grapple from touching the ground) until the arch reaches the end of its OUTWARD travel and hold the pressure.

CAUTION:- this should NOT raise the rear wheels off the ground.

10. Adjust the arch OUT, port relief valve to give a reading of 2500-2600 psi on the gauge.

11. Readjust multifunction relief valve to 35003600 psi. and then the pump P.O.R. to 30003100 psi.

12. Turn off the engine, remove gauges, reinstall plugs on test ports and replace the cover plates.

BOOM UP/DOWN PORT RELIEF ADJUSTMENT 1.

Set parking brake ON, grapple and dozer blade DOWN and shut off the engine.

2.

Connect a 0-5000 psi gauge to the test port on the grapple control valve, which is located under the cover plate on the top of the rear chassis. Connect a 0-5000 psi gauge to the ‘P3’ test port. Remove cover plate on right, front side of engine cover.

3.

Ensure that the hydraulic oil is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

4.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

5.

It is necessary to temporarily increase the pressure of the main pump to 3850-3900 psi.

b.

Turn main pump P.O.R. (behind cover plate right side of engine) IN to 3850-3900 psi. on the 'P3' gauge.

6.

Make sure that the area is clear, grapple is off the ground, closed and rotated to center position.

7.

With the aid of an assistant, operate the boom UP control and hold pressure.

8.

Adjust the boom up, port relief valve to give a reading of 3500-3600 psi on the gauge.

9.

Move boom DOWN and maintain pressure. (adjust the arch OUT to prevent the grapple from touching the ground) and maintain pressure. CAUTION - This should NOT raise the rear wheels off the ground.

10. Adjust the boom down, port relief valve to give a reading of 2500-2600 psi on the gauge.

11. Readjust multifunction relief Valve to 35003600 psi. and then the Pump P.O.R. to 30003100 psi.

12. Turn off the engine, remove gauges, reinstall plugs on the test ports and replace the cover plates.

a.

Turn multifunction main relief IN all the way, lightly seated.

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck 12.15

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE CONTROL VALVE

*NOTE: There are several variations of the grapple control valve in use, depending on whether the machine has a single or dual function arch and whether a winch is included.

GRAPPLE ROTATE AND OPEN/CLOSE SECTIONS The grapple control valve consists of four* open center spool sections, used in a closed circuit application ( three* sections if a winch is not used), with one end inlet section that is used as an oil inlet and outlet. Each spool section is pilot operated.

A dual function arch and a winch will both add a section to the grapple control valve, making it either a four or five section valve. If the machine has a winch and no arch it will be a single section valve.

The closed circuit application, using open circuit spool sections, is accomplished by blocking the power beyond carry-over port using a special power beyond plug.

When a spool is activated, oil enters the inlet section passes through the spool section and out to the function. The return oil from the function flows back to the valve, through the spool and back to tank via the tank port.

FRONT OIL OUT

OIL IN INLET SECTION

•

•

FRONT GAUGE TEST PORT

• •

B

WINCH

A

B

ARCH

A

B GRAPPLE

A

B ROTATE

A

• CW PORT OUTLET SECTION AT038IL3

OPEN PORT RELIEF

• • ARCH

CLOSE PORT RELIEF

A

•

•

B GRAPPLE

A

ROTATE

A

B

•

• CW PORT OUTLET SECTION

CCW PORT

GRAPPLE CONTROL VALVE (grapple) LOAD CHECK VALVE

OIL OUT

• •

B

•

RELIEF VALVE PORT 'b'

GAUGE TEST PORT OIL IN

CLOSE PORT RELIEF

OPEN PORT RELIEF

•

INLET SECTION

•

PARALLEL PASSAGE

WORK PORT BRIDGE

RELIEF VALVE PORT 'a'

A

•

• • •

PILOT END CAP

•

•

•

•

•

SPOOL

THRU' NEUTRAL PASSAGE TANK PASSAGE

90136-3

CCW PORT

•

GRAPPLE CONTROL VALVE (grapple - no winch)

AT038XX3

B

•

•

CROSS SECTION OF SPOOL SECTIONS WITH PORT RELIEFS 12.16

SPOOL CENTERING SPRING

• PILOT END CAP

Tigercat 630 Skidder

Grapple, Arch and Boom

Each of the spool sections has a self centering 3position spool which is open centered, but operating in a closed circuit application. A spring in the spool end cap holds the spool in the center neutral position. The spool is shifted by pilot pressure being applied to either end of the spool.

Shifting the spool directs oil to operate its function.

If other spools are operated simultaneously the flow will be split between the operating functions, resulting in reduced flow to each.

To prevent over pressurizing of the operating circuits, some of the work ports in the valve sections have a PORT RELIEF VALVE. All relief valves are anti-cavitation relief valves.

For a detailed description of these relief valves, refer to RELIEF VALVES in THIS SECTION.

FRONT OIL IN

OIL OUT GAUGE TEST PORT

INLET SECTION

•

• •

WINCH IN PORT

•

ARCH IN PORT RELIEF

ARCH OUT PORT RELIEF

B

WINCH

A

B

ARCH

A

B

GRAPPLE

A

ROTATE

A

•

•

•

•

•

GRAPPLE OPEN PORT RELIEF

•

B

• GRAPPLE CLOSE PORT RELIEF

GRAPPLE CLOCKWISE ROTATION PORT OUTLET SECTION

AT038IL3

GRAPPLE COUNTERCLOCKWISE ROTATION PORT

• GRAPPLE CONTROL VALVE (grapple) 12.17

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE ROTATE CIRCUIT CIRCUIT DESCRIPTION (6300401 TO 6300999) WITH TIGERCAT GRAPPLE The grapple control valve is located on the rear chassis above the rear axle and under the cover plate.

A hydraulic grapple rotate motor is mounted in the rotator box on the arch/boom, under a protective removeable hood. It is used to rotate the grapple head clockwise or counterclockwise. The tigercat grapple is capable of continuous 360° rotation clockwise or counterclockwise.

• REMOVABLE HOOD

The grapple rotate motor is operated by the two push buttons at the top left of the joystick control lever. (Earlier versions of the joystick operated the grapple rotate motor by a 3 position thumb switch).

The switches operate two solenoid pilot valves located on the pilot manifold which direct pilot oil to each end of the rotate spool section of the grapple control valve to shift the spool. The spool shifts and directs oil from the main pump to either side of the motor causing it to rotate clockwise/ counterclockwise and rotate the grapple. Return oil is directed back to tank via the dozer valve.

Two flow control valves installed in each line to the grapple rotate motor, reduce the flow of oil and maintain a steady grapple rotate speed. They are located close to the grapple rotate valve ports. The arrow on each of these valves must point towards the valve.

The grapple rotate motor is a hydraulic gerotor motor and has non-adjustable double cross-line relief valves for protection. If external rotational pressure is applied to the head, these valves bypass the oil to protect the motor and seals. The grapple rotate circuit does not have any port relief adjustments.

CIRCUIT DESCRIPTION (6300101 TO 6300400) WITH ESCO GRAPPLE The control valve is located on the rear chassis above the rear axle and under the cover plate.

262-11A

GRAPPLE ROTATOR BOX TIGERCAT GRAPPLE

GRAPPLE ROTATE MOTOR

• GRAPPLE ROTARY MANIFOLD

•

262-11A

GRAPPLE ROTATOR BOX TIGERCAT GRAPPLE

A hydraulic rotor attached to the end of the arch/ boom is used to rotate the grapple head clockwise or counterclockwise.

The grapple rotor is operated by the two push buttons at the top left of the joystick control lever.

(Earlier versions of the joystick operated the grapple rotor by a 3 position thumb switch). The switches operate two solenoid pilot valves located on the pilot manifold which direct pilot oil to each end of the rotate spool section of the grapple control valve to shift the spool. The spool shifts and directs oil from the main pump to either side of the rotor causing it to rotate clockwise/ counterclockwise and rotate the grapple. Return oil is directed back to tank via the dozer valve.

Two flow control valves installed in each line to the grapple rotor, reduce the flow of oil and maintain a steady grapple rotate speed. They are located close to the grapple rotate valve ports. The arrow on each of these valves must point towards the valve.

12.18

Tigercat 630 Skidder

Grapple, Arch and Boom

The rotor body is attached to the grapple head housing and the rotor shaft is fastened to the swivel clevis on the arch/boom. When oil is supplied to either side of the rotor, the shaft is held stationary on the clevis and the rotor body rotates on the shaft and turns the grapple.

The rotor has non-adjustable cross-line relief valves for protection. If external rotational pressure is applied to the head, these valves bypass the oil to protect the motor and seals. The grapple rotate circuit does not have any port relief adjustments.

GRAPPLE OPEN/CLOSE CIRCUIT CIRCUIT DESCRIPTION The grapple cylinders are operated by the two bottom push buttons, OPEN/CLOSE, on the joystick control leverr. (Earlier versions of the joystick used a 3 position thumb switch OPEN/ CLOSE (self centering to OFF)). The switches operate two solenoid pilot valves located on the pilot manifold which direct pilot oil to each end of the grapple spool section of the grapple control valve to shift the spool. The spool shifts and directs oil from the main pump to either end of the cylinders causing the grapple arms to open or close. For later machines equipped with Tigercat continuous rotation grapples the oil is directed to the cylinders via a rotary manifold mounted in the rotator box allowing continuous 360° rotation of the grapple. Return oil is directed back to tank via the dozer valve.

A trigger switch on the joystick lever, when held in the ON position holds the grapple closed solenoid valve in the energized position which in turn holds the grapple spool section of the main valve in the closed position. This will cause a constant pressure to be applied to the closed grapple arms to maintain a firm grip on the load and help prevent slippage. To release the constant pressure to the grapple, press the GRAPPLE OPEN button momentarily.

12.19

Tigercat 630 Skidder

630-03

Grapple, Arch and Boom

GRAPPLE CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 12.20

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 630-33

12.21

Tigercat 630 Skidder

Grapple, Arch and Boom

GRAPPLE PRESSURE SETTINGS

WARNING Do not stand above or below the arch assembly, grapple or between the arch and rear chassis during this procedure.

'P3'

•

Before performing work on the arch assembly, lower it to the ground and/or use proper support devices.

TEST PORT COMPARTMENT BELOW LEFT CAB DOOR (LATER MACHINES ONLY)

275-3

RELIEF VALVE

GRAPPLE ROTATE HYDRAULIC ADJUSTMENTS There are no hydraulic adjustments necessary for the grapple rotate circuit.

•

ENGINE, RH SIDE

•

GAUGE TEST PORT 'P3'

•

GRAPPLE OPEN/CLOSE PORT RELIEF ADJUSTMENT 1.

Set parking brake ON, grapple dozer blade DOWN and shut off the engine.

2.

Connect a 0-5000 psi gauge to the test port on the grapple control valve, which is located under the cover plate on the top of the rear chassis. Connect a 0-5000 psi gauge to the ‘P3’ test port.

3.

Ensure that the hydraulic oil is at operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

4.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

5.

It is necessary to temporarily increase the pressure of the Main Pump to 3850-3900 psi.

AW110

630-PH1

MULTIFUNCTION VALVE & TEST PORT LOCATIONS (EARLIER MACHINES) HIGH PRESSURE RELIEF VALVE PRESSURE REDUCING VALVE SEQUENCE VALVE

• • • DIG-004

a. Turn multifunction main relief IN all the way, lightly seated.

HOSES REMOVED FOR CLARITY

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck in the fully stroked position. Back off the adjusting screw if the pressure rises above 3600 psi and investigate the main pump for proper operation.

MULTIFUNCTION VALVE (SHOWN ON LATER MACHINES)

WARNING Use caution when working on top of the rear chassis, as there are many pinch areas between the arch, arch cylinders and winch. DO NOT move arch when workers are in this area.

b. Turn main pump P.O.R. (behind cover plate right side of engine) IN to 3850-3900 psi. on the 'P3' gauge.

WARNING Do not work under the arch without properly supporting the arch/grapple assembly. NEVER move the arch/grapple assembly when workers are in this area.

6.

Make sure that the area is clear, grapple is off the ground, closed and rotated to center position.

7.

With the aid of an assistant, operate the grapple CLOSE control and hold the closing pressure.

Continued on page 22

12.22

Tigercat 630 Skidder

Grapple, Arch and Boom

Continued from page 21

8.

ANTI-CAVITATION RELIEF VALVE ADJUSTING PROCEDURE

Adjust the grapple close, port relief valve to give a reading of 3650-3700 psi on the gauge.

1.

Loosen jamnut.

OPEN the grapple and maintain opening pressure.

2.

Turn adjusting nut* to obtain desired pressure reading on gauge.

10. Adjust the grapple OPEN, port relief valve to give a reading of 3500-3600 psi on the gauge.

3.

Lock jamnut against adjusting nut using 6-8 lbf/ft., making sure the adjusting screw does not turn.

11. Readjust multifunction relief valve to 35003600 psi. and then the pump P.O.R. to 30003100 psi.

5.

Re-check relief setting.

9.

ADJUSTING NUT

•

12. Turn off the engine, remove gauges, reinstall plugs on the test ports and replace the cover plates.

JAMNUT, 1" WRENCH

•

GRAPPLE SNUBBER MAINTENANCE Refer to GRAPPLE SNUBBER MAINTENANCE in SECTION 3 of THIS MANUAL.

*IMPORTANT: Approach the gauge reading slowly and deliberately by turning adjusting nut in a little at a time.

For complete step-by-step pressure setting procedures of circuits using these relief valves, Refer to the appropriate sections in this manual.

12.23

Tigercat 630 Skidder

Grapple, Arch and Boom ANTI-CAVITATION RELIEF VALVE

VALVE POPPET

T P

This valve is used as a MAIN and PORT relief valve in both the dozer and grapple control valves.

OPERATION: Step 1.

T

STEP 1 PILOT POPPET

‘P’ represents a high pressure area and ‘T’ represents tank. Under normal operation, ‘P’ is below the relief pressures, the valve poppet is firmly seated and oil cannot flow to tank.

T

Step 2.

P

STEP 2

T

When the pressure at ‘P’ reaches the relief valve setting, the pilot poppet unseats and allows oil in the inner cavity to flow to tank, thus lowering the pressure in the cavity between the pilot poppet and the other poppets.

Step 3.

SEATING POPPET

T P

STEP 3

T VALVE POPPET

Step 4.

T P

STEP 4

T

P

STEP 5

T CHECK POPPET

When pressure ‘P’ drops the pilot poppet closes and then the seating poppet moves back to its original position and permits oil pressure to flow into the cavity behind the valve poppet. As the seating poppet moves back it comes in contact with the valve poppet and its spring force plus the oil pressure cause the valve poppet to move back to the closed position.

As an anti-void or check valve

T P

ANTI-VOID CHECK OPERATION

As the seating poppet began to move away from the valve poppet, the valve poppet began to open under the effect of the pressure at P thus allowing a large volume of flow to tank. The drop in pressure behind the valve poppet when the seating poppet seats on the pilot poppet ensures full opening of the valve poppet.

Step 5.

T

VALVE POPPET

As a result of the opening of the pilot poppet, the seating poppet moves back, due to the pressure drop caused by oil flow through the bore of the seating poppet, and seats against the pilot poppet.

This shuts off the flow of oil through the seating poppet and the cavity pressure now drops to tank pressure.

T

The anti-void unit supplies oil to the pressure area ‘P’ when its pressure drops below the pressure in the tank gallery of the valve. The valve then acts as a free flow check valve and prevents cavitation.

In this condition, the pressure at ‘P’ is lower than at ‘T’ and due to the shape of the check poppet, the pressure forces cause the poppet to unseat, allowing oil to flow from ‘T’ to ‘P’.

12.24

Tigercat 630 Skidder SECTION 13 - WINCH DECEMBER 1999

CONTENTS - SECTION 13 CIRCUIT DESCRIPTION ................................................................................ 13.4 WINCH ......................................................................................................... 13.5 CIRCUIT DIAGRAMS WINCH 6300101 TO 6300400 ..................................................................... 13.6 WINCH 6300401 TO 6300999 ..................................................................... 13.7 CONTROL LEVER VALVE .............................................................................. 13.2 GRAPPLE CONTROL VALVE WINCH SECTION ........................................................................................ 13.3 PRESSURE SETTINGS WINCH NONE ADJUSTABLE ...................................................................... 13.5

Tigercat 630 Skidder

Winch OPERATING DESCRIPTION

WINCH CONTROL LEVER VALVE

The winch control lever valve is one section of a two section sandwich plate design valve. The second section of the valve is used to operate the dozer blade.

This pilot valve is a manually operated directional control valve and operates on the same principal as a direct operating pressure reducing valve. The control lever, the joystick and foot control valves use similar spool arrangements.

In the neutral position the control lever is held centered by return spring (4).

This control valve directs pilot pressure to the pilot end cap of the winch section of the grapple control valve. The corresponding spool valve then shifts from its center position and directs pump flow to operate the winch motor.

When the lever (1) is operated, plunger (5) is pushed against the return spring (4) At the same time, control spool (2) is moved by control spring (3).

As the spool moves down, the control chamber to tank connection is closed. As the spool continues to move, the connection between input pressure (P) and the control chamber is opened and the pressure is then able to build up in the control chamber.

•

5

• •

4

•

2

3

•

Once the pressure equals the value set by control spring (3), the control spool closes the loop and there is a connection to work ports (1,2).

1

•

Oil flow is directly proportional to the position of the control lever setting by the operator and the control spring (3) characteristics.

• • •

•

8

'P' port

AU013-1

WORK PORTS 1, 2

SPOOL ARRANGEMENT

AU013-2

AU014-1

13.2

WINCH CONTROL LEVER VALVE

Tigercat 630 Skidder

Winch

GRAPPLE CONTROL VALVE

*NOTE: There are several variations of the grapple control valve in use, depending on whether the machine has a single or dual function arch and whether a winch is included.

WINCH SECTION The grapple control valve consists of four* open center spool sections, used in a closed circuit application, with one end inlet section that is used as an oil inlet and outlet. Each spool section is pilot operated.

A dual function arch and a winch will both add a section to the grapple control valve, making it either a four or five section valve. If the machine has a winch and no arch it will be a single section valve.

The closed circuit application, using open circuit spool sections, is accomplished by blocking the power beyond carry-over port using a special power beyond plug.

When a spool is activated ,oil enters the inlet section and passes through the spool section and out to the function. The return oil from the function flows back to the valve, through the spool and back to tank via the tank port.

FRONT INLET SECTION

OUTLET SECTION

•

•

INLET SECTION

OIL OUT

OIL IN

GAUGE TEST PORT

• •

• •

•

WINCH

A

B

ARCH

A

B GRAPPLE

A

B

A

B

OUTLET SECTION

GAUGE TEST PORT

OIL OUT

• •

WINCH IN PORT

B

ROTATE

FRONT OIL IN

WINCH

WINCH IN PORT

A

•

•

•

GRAPPLE CONTROL VALVE (WINCH) (single function arch)

AT038IL4

WORK PORT BRIDGE

PORT 'B' RELIEF PORT PLUGGED

AT038XX1

WINCH CONTROL VALVE (no grapple)

PARALLEL PASSAGE

LOAD CHECK VALVE

B

PORT 'A' RELIEF PORT PLUGGED

A

•

• • •

•

• PILOT END CAP

•

• •

SPOOL THRU' NEUTRAL PASSAGE

TANK PASSAGE 90136-4F

•

CROSS SECTION OF SPOOL SECTIONS WITHOUT PORT RELIEFS 13.3

• SPOOL CENTERING SPRING

PILOT END CAP

Tigercat 630 Skidder

Winch

Each of the spool sections has a self centering 3position spool which is open centered, but operating in a closed circuit application. A spring in the spool end cap holds the spool in the center neutral position. The spool is shifted by pilot pressure being applied to either end of the spool.

Shifting the spool directs oil to operate its function.

If other spools are operated simultaneously the flow will be split between the operating functions, resulting in reduced flow to each.

To prevent over pressurizing of the operating circuits, some of the work ports in the valve sections have a PORT RELIEF VALVE. The winch spool section does not have port relief valves.

WINCH CIRCUIT CIRCUIT DESCRIPTION The control valve is located on the rear chassis above the rear axle and under the cover plate.

A hydraulic motor is used to drive the winch during the winding IN of the cable.

The hydraulic motor receives oil from the main pump via the winch spool section in the grapple control valve. The spool section in this control valve is pilot operated at both ends. It receives pilot oil from the lever control valve in the operator's cab to shift the spool. The spool directs oil from the pump to the motor and from the motor back to tank via the dozer valve.

FRONT OIL IN

OIL OUT GAUGE TEST PORT

INLET SECTION

•

•

•

WINCH IN PORT

•

ARCH OUT PORT RELIEF

ARCH IN PORT RELIEF

B

WINCH

A

B

ARCH

A

•

•

B

•

•

GRAPPLE

A

ROTATE

A

•

GRAPPLE OPEN PORT RELIEF

•

•

B

•

GRAPPLE CLOCKWISE ROTATION PORT RELIEF

GRAPPLE CLOSE PORT RELIEF

GRAPPLE CLOCKWISE ROTATION PORT OUTLET SECTION

AT038IL4

•

GRAPPLE COUNTERCLOCKWISE ROTATION PORT RELIEF GRAPPLE COUNTERCLOCKWISE ROTATION PORT

• GRAPPLE CONTROL VALVE (WINCH) (single function arch) 13.4

Tigercat 630 Skidder

Winch

WINCH

WINCH HYDRAULIC ADJUSTMENTS

The winch is driven by a hydraulic motor through the sprague clutch and winch drive components.

The pinion sprag holds the load in conjunction with the free spool clutch to prevent reverse rotation of the drum. The free spool clutch separates the drum from other drive components and permits the cable to unwind freely.

There are no hydraulic adjustments necessary for the winch circuit.

The winch is controlled through a variable position lever and a free spool switch. The winch free spool switch operates the free spool clutch, allowing the cable to unwind freely from the drum. The cable can now be pulled from the drum by the operator.

The winch is self lubricated by the attached oil pump, which draws oil from the winch sump to lubricate the gearing and bearing surfaces as well as the motor input shaft spline. This lubrication pump is located behind the sprague clutch, on the outside of the winch, beside the drive motor and operates each time the pump is operated.

If for some reason there is excessive pull on the cable, which causes the drum to turn backwards during the ‘WINCH IN’ or ‘HOLD’ operation, the sprague clutch will prevent the lubrication pump and drive motor from being backdriven when cable is pulled from the drum.

WARNING Do not stand above or below the arch assembly, grapple or between the arch and rear chassis when working on the winch.

Before performing work on the winch, lower the arch assembly to the ground and/or use proper support devices.

WARNING Use caution when working on top of the rear chassis, as there are many pinch areas between the arch, arch cylinders and winch. DO NOT move arch when workers are in this area.

WARNING Do not work under the arch without properly supporting the arch/grapple assembly.

NEVER move the arch/grapple assembly when workers are in this area.

See the manufacturer’s service manual for information on the winch.

DRIVE MOTOR

•

• LUBRICATION PUMP WINCHXS

CROSS SECTION OF WINCH 13.5

Tigercat 630 Skidder

630-04

Winch

WINCH CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 13.6

Tigercat 630 Skidder

630-30

Winch

WINCH CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 13.7

Tigercat 630 Skidder

Winch

13.8

Tigercat 630 Skidder SECTION 14 - DOZER BLADE DECEMBER 1999

CONTENTS - SECTION 14 CIRCUIT DESCRIPTION .............................. 14.4 CIRCUIT DIAGRAMS DOZER 6300101 TO 6300400 ................... 14.6 DOZER 6300401 TO 6300999 ................... 14.7 CONTROL LEVER PILOT VALVE ................. 14.2 DOZER CONTROL VALVE ........................... 14.2 PRESSURE SETTINGS ................................ 14.4

Tigercat 630 Skidder

Dozer blade Oil flow is directly proportional to the position of the control lever setting by the operator and the control spring (3) characteristics.

CONTROL LEVER DOZER BLADE This pilot valve is a manually operated directional control valve and operates on the same principal as a direct operating pressure reducing valve. The control lever, the joystick and foot control valves use similar spool arrangements.

This control valve directs pilot pressure to the pilot end caps of the dozer control valve. The spool valve then shifts from its center position and directs pump flow to operate the dozer cylinders.

•

5

• •

4

•

2

3

•

1

•

• • •

•

8

'P' port

AU013-1

WORK PORTS 1, 2

SPOOL ARRANGEMENT

AU014-1 AU013-2

DOZER BLADE CONTROL LEVER VALVE

OPERATING DESCRIPTION The dozer blade control lever valve is one section of a two section sandwich plate design valve. The second section of the valve is used to operate the winch.

DOZER CONTROL VALVE

In the neutral position the control lever is held centered by return spring (4).

The dozer blade control valve consists of one pilot operated, open center spool sections, used in a closed circuit application. One inlet section and one outlet section.

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

The closed circuit application, using open circuit spool sections, is accomplished by blocking the power beyond carry-over port using a special power beyond plug.

At the same time, control spool (2) is moved by control spring (3).

As the spool moves down, the control chamber to tank connection is closed. As the spool continues to move, the connection between input pressure (P) and the control chamber is opened and the pressure is then able to build up in the control chamber.

On the inlet section, one port receives oil 'P' from the priority valve and another port receives return oil 'T' from the steer valve and grapple valve.

On the outlet section, one port receives return oil 'T' from the multifunction valve and the other port is used to return oil to tank via the distribution manifold.

Once the pressure equals the value set by control spring (3), the control spool closes the loop and there is a connection to work ports (1,2).

14.2

Tigercat 630 Skidder

Dozer blade To prevent over pressurizing of the operating circuit, the work ports in the valve section have a PORT RELIEF VALVE.

When the spool is activated, oil enters the inlet section and is allowed to pass through the spool section and out to the dozer cylinders. The return oil from the dozer cylinder flows back to the valve, through the spool and back to tank via the tank port.

All relief valves are anti-cavitation relief valves.

For a detailed description of these relief valves, refer to RELIEF VALVES in SECTION 12 of THIS MANUAL.

The spool section has a self centering 3-position spool which is open centered, but operating in a closed circuit application. A spring in the spool end cap holds the spool in the center neutral position. The spool is shifted by pilot pressure being applied to either end of the spool. Shifting the spool directs oil to operate the dozer blade cylinders.

OIL OUT TO RETURN MANIFOLD

FRONT OUTLET SECTION

• DOZER DOWN PORT RELIEF

RETURN OIL FROM MULTIFUCTION VALVE

DOZER UP PORT RELIEF

•

•

DOZER

A

B

• GAUGE TEST PORT

• •

•

'PRESSURE' OIL 'IN' FROM PRIORITY VALVE

INLET SECTION "RETURN "OIL FROM STEER VALVE AND GRAPPLE VALVE

DOZER CONTROL VALVE

AT029IL1 RELIEF VALVE PORT 'A'

PARALLEL PASSAGE

LOAD CHECK VALVE

A

WORK PORT BRIDGE

RELIEF VALVE PORT 'B'

B

PILOT END CAP PILOT END CAP 90136-3

SPOOL CENTERING SPRING

SPOOL TANK PASSAGE

THRU' NEUTRAL PASSAGE

CROSS SECTION OF SPOOL SECTION 14.3

Tigercat 630 Skidder

Dozer blade DOZER PRESSURE SETTINGS

DOZER CIRCUIT CIRCUIT DESCRIPTION

WARNING

The dozer valve is located on the valve bench on the front chassis just behind the radiator in front of the cab. (On earlier machines the dozer control valve was located on the front chassis under the back edge of the radiator in front of the cab, under the cover plate.)

Do not stand above or below the dozer blade or between the blade and front chassis during this procedure.

Before performing work on the dozer blade, lower the blade to the ground, or use proper supporting devices.

Two cylinders are used to raise and lower the dozer blade.

CAUTION

The dozer circuit receives hydraulic oil from the main hydraulic pump via the 'P1' port on the multifunction valve manifold.

Avoid blowing oil over the relief for longer than 5 seconds, as this will cause excessive heating of the hydraulic fluid and possible damage to hydraulic components.

The oil then passes through the priority valve, where it is divided up to go to either the steer valve and on to the steer cylinders, or to the dozer, grapple, or winch functions.

WARNING

The priority valve is a safety feature that allows the steer circuit to have first call on oil before the dozer, grapple, or winch circuits.

Park machine on level ground, stop engine, set parking brake ON, lower dozer and grapple to the ground and block wheels

By splitting the system into two independent circuits, pressure transients are isolated in each circuit and only the flow required for steering goes to the steering circuit. The remaining flow is available for the dozer, grapple, and winch functions. This provides safe, reliable operation because the steering circuit always has flow and pressure priority.

WARNING Use caution when working around the dozer area, as there are many pinch areas between the dozer assembly, cylinders and front chassis.

DO NOT move the blade when workers are in this area.

Oil from the priority valve 'EF' port is connected to the dozer control valve inlet section. When the dozer blade is not operating, the oil from the inlet section is allowed to pass through the open center of the valve spool section and back to tank via the outlet section.

WARNING Do not work under the blade without properly supporting the dozer assembly. NEVER move the dozer assembly when workers are in this

The spool section in this control valve is pilot operated at both ends. Pilot oil to either end of the end caps is supplied via the dozer lever control valve in the operator's cab. Moving the dozer lever control valve one way or the other directs pilot oil to shift the spool.

*Refer to RELIEF VALVE ADJUSTING PROCEDURE in SECTION 12 of THIS MANUAL.

When the spool is shifted, passages in the dozer valve are opened to supply oil to either end of the dozer cylinders to operate the blade. Return oil from the cylinders returns through the dozer valve section, to the outlet section and back to tank.

DOZER BLADE UP/DOWN PORT RELIEF ADJUSTMENT

IMPORTANT: Approach the gauge reading slowly and deliberately by turning adjusting nut IN a little at a time. The pressure settings must not exceed the designated values.

NOTE: Park the machine on level ground as this procedure will lift the front wheels off the ground when the dozer blade is operated in its down postion.

1.

14.4

Set parking brake ON, grapple UP, dozer DOWN and shut off the engine.

Tigercat 630 Skidder 2.

Dozer blade

Connect a 0-5000 psi gauge to the test port on the dozer control valve, which is located under the cover plate, between the cab and the engine radiator assembly.

b. Turn main pump P.O.R. (behind cover plate right side of engine) IN to 3850-3900 psi. on the 'P3' gauge.

Connect a 0-5000 psi gauge to the ‘P3’ test port.

••

MAIN PUMP P.O.R. ADJUSTING SCREW

'P3'

•

TEST PORT COMPARTMENT BELOW LEFT CAB COOR (LATER MACHINES ONLY)

275-3

HOSES REMOVED FOR CLARITY

630-PH2

RELIEF VALVE

MAIN PUMP - DOZER, STEER & GRAPPLE

•

ENGINE, RH SIDE

•

GAUGE TEST PORT 'P3'

••

6.

Make sure that the area is clear and the engine front door is closed.

7.

With the aid of an assistant operate the dozer UP control and hold pressure.

8.

Adjust the dozer UP, port relief valve to give a reading of 3500-3600 psi on the gauge.

CAUTION

MULTIFUNCTION VALVE & TEST PORT LOCATIONS (EARLIER MACHINES) 3.

Do not operate machine with front door open. Dozer blade will damage the door if operated with the front door open.

AW110

630-PH1

9.

Ensure that the hydraulic oil is a operating temperature. See HYDRAULIC OIL HEATING PROCEDURE in SECTION 8 of THIS MANUAL.

4.

Start the engine, hold down the brake pedal and set the throttle to IDLE (900-1000 rpm).

5.

It is necessary to temporarily increase the pressure of the main pump to 3850-3900 psi.

LOWER dozer blade completely and hold pressure. CAUTION - This will raise the front wheels off the ground.

10. Adjust the dozer DOWN, port relief valve to give a reading of 3500-3600 psi on the gauge.

11. Raise the dozer blade to allow the front wheels to contact the ground.

a. Turn multifunction relief IN all the way, lightly seated.

12. Readjust multifunction relief valve to 35003600 psi. and then the Pump P.O.R. to 30003100 psi.

13. Turn off the engine, remove gauges, reinstall plugs on the test ports and replace the cover plates.

WARNING: Observe the pressure gauge while turning the relief valve adjusting screw IN. The main pump could be stuck in the fully stroked position. Back off the adjusting screw if the pressure rises above 3600 psi and investigate the main pump for proper operation.

14.5

Tigercat 630 Skidder

630-05

Dozer blade

DOZER CIRCUIT SERIAL NUMBERS 6300101 TO 6300400 14.6

Tigercat 630 Skidder

630-32

Dozer blade

DOZER CIRCUIT SERIAL NUMBERS 6300401 TO 6300999 14.7

Tigercat 630 Skidder

Dozer blade

14.8