Tigercat T250 Loader OPERATOR'S MANUAL - PDF DOWNLOAD

OPERATOR'S MANUAL Tigercat T250 Loader TABLE OF CONTENTS

ISSUE 1.1, MARCH 2004

SECTION INTRODUCTION .............................................................................................................. iii NON-APPROVED FIELD PRODUCT CHANGES ............................................................ iv SAFETY ............................................................................................................................ 1 CONTROLS AND OPERATION ........................................................................................ 2 LUBRICATION AND MAINTENANCE ............................................................................... 3

250T-OM00

T250 Available Literature Operator's Manual ............................... Part No. 18878A Service Manual .................................... Part No. 18879A Parts Catalog ....................................... Part No. 18877A Hydraulic Adapters Book ....................... Part No. 1472A Hydraulic Hose assemblies Book ......... Part No. 3707A

Tigercat P.O. Box 544 Paris, Ontario Canada N3L 3T6 Tel: (519) 442-1000 Fax: (519) 442-1855

®

Tigercat 250 Loader

Introduction

ii

Tigercat 250 Loader

Introduction

Tigercat T250 Loader

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 Tigercat T250 Loader.

The operator's manual will assist the operator with the techniques of proper and safe operation of the T250 Loader. There is also important information regarding the safe operation of the saw head. The service manual contains safety and servicing procedures and a preventive maintenance schedule to 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 phrase “and up” appearing in this manual after the serial number implies that the related information is current for any machine serial number HIGHER than the serial number preceding the “and up”.

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

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

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

Tigercat Industries Inc.

T250-01

iii

Tigercat 250 Loader

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.

iv

Tigercat T250 Loader

SECTION 1 - SAFETY OCTOBER 2003 Read and understand this Safety section prior to operating any equipment.

Read and understand all manuals for any attachments or accessories.

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

Tigercat T250 Loader

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 T250 Loader

Safety familiar with and adhere to. More specific measures are illustrated with pictograms which may also be attached to the machine in locations pertinent to their respective message. Keep safety labels in good condition. Repair or replace damaged labels.

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.

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

KEEP BACK 500 FEET When approaching an operating machine on foot, stay at least 500 feet (150M) away from the machine and all related attachments including the grapple, delimber, topping saw and ground saws until the operator recognizes your presence.

Make sure that all equipment is shut down with grapple resting securely on stable ground before advancing to the machine.

Follow all instructions from safety inspector and supervisors.

Always avoid the discharge path of all saws.

Operators of this equipment must be fully trained by a qualified person in safety and operating procedures. The operator must be fully aware of the capabilities and limitations of the equipment and must at no time exceed them. The machine is to be used only for its intended purpose. Learn the most efficient operating techniques.

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

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

Do not let an untrained person operate the machine.

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

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

Fellow workers and other bystanders around the machine must also be provided with the appropriate safety devices mentioned above.

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

These safety rules highlight both general and specific measures that the operator should be 1.3

Tigercat T250 Loader

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

GENERAL SAFETY PRECAUTIONS continued

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

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

Approach with extreme caution, any area where overhanging electrical 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.

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

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

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

Machines should be completely cleaned of debris at least daily, 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.

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

When the machine is transported, make sure that it is adequately secured to the transporting vehicle.

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

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

Do not operate the equipment with anyone in the cab, on platforms, or anywhere else within 300 feet the machine or related equipment. The machine is provided and approved with seating for the operator only.

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

Inspect the machine daily for signs of damage, unusual wear, fluid leaks, or faulty operation.

Repair or replace malfunctioning parts and systems immediately.

Read, understand and follow all general safety precautions specified by grapple, delimber and saw manufacturers.

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

WARNING Battery posts, terminals and related accessories contain lead and lead compounds.

Wash hands after handling.

1.4

Tigercat T250 Loader

Safety

OPERATING SAFETY PRECAUTIONS

Never use a liquid starting aid to start an engine with a pre-heat device.

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

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

Ensure that the windshield guard is installed and properly secured.

During refuelling do not leave the filler nozzle unattended.

Avoid over filling and immediately clean up spilled fuel.

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

Keep the cab door closed when operating the machine to prevent accidental entry of branches and debris into the cab.

Always rest the grapple on solid ground or trailer when not operating, regardless if the engine is running or shut off.

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

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

Sound the machine horn before starting the machine.

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

Start the engine according to the instructions in this manual.

Maintain a safe operating distance between the machine and other personnel. Never swing the boom with or without trees, over the heads of bystanders.

Use only prearranged and approved signalling practices.

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

1.5

Tigercat T250 Loader

Safety

OPERATING SAFETY PRECAUTIONS continued

WARNING Always lower the boom to the ground and shut down the engine before leaving the cab.

Do not allow other people either in the cab or anywhere else on the machine.

DANGER A falling or swinging load or boom can cause serious injury or death. Do not operate the loader when personnel are in the area of the machines operating reach or load movement. Do not move the boom or load over the heads of people.

Before leaving operator's cab, lower the grapple onto solid ground or the trailer.

When leaving the operator's cab for an extended period shut the engine off.

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

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

Before transporting the machine: •

Secure the grapple to the trailer and raise the stabilizers.

•

Shut down the engine and turn the master disconnect switch off.

•

Check to ensure that all doors, panels and access covers are installed and properly secured.

1.6

Tigercat T250 Loader

Safety ENGINE ANTISTALL CONTROL MODULE

SERVICING SAFETY PRECAUTIONS

•

DISCONNECT MULI-PIN PLUG FROM THE ENGINE ANTI-STALL CONTROL MODULE

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

250-10

CONTROL MODULE IN CAB

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.

When servicing or repairing equipment, shut the engine down. Turn Master Disconnect switch OFF.

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

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

Disconnect the negative (-) battery cable from all three batteries.

This machine is equipped with sensitive electronic control equipment, prior to welding:Disconnect the multi-pin plug from the engine anti-stall controller located on the rear inside wall of the cab.

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.

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 inspected daily and cleaned as necessary to maintain moderate engine temperatures.

Never use your bare hand to check for fluid leaks.

Fluid leaks under pressure may not be visible.

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

1.7

Tigercat T250 Loader

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

SERVICING SAFETY PRECAUTIONS continued

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

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

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

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.

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

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

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

Dispose of all fluids properly according to all applicable laws and regulations for the region.

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

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.

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

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.

Before performing work on the grapple or boom, ensure they are firmly supported.

1.8

Tigercat T250 Loader

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

FIRE PREVENTION

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

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

6. AFTER transporting (trucking) a machine from one job sight to the next, open all doors and access panels and blow off any debris that could have re-positioned itself onto the engine and exhaust parts due to wind turbulance caused by the journey.

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.

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

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

1. Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. 2. Inspect the machine for any signs of fuel or hydraulic system leakage and check for worn or eroded fuel or hydraulic lines before starting up any equipment.

3. Remove debris and blow out dust regularly from the air intake doors, engine radiator, hydraulic oil cooler and A/C condenser core to prevent overheating of the engine and hydraulics. Refer to CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR in SECTION 2 of the OPERATOR’S MANUAL. 4. Blow off all debris and dust accumulated near hot engine exhaust components (turbocharger and exhaust manifold as well as exhaust pipes and muffler) at the completion of each work shift or more frequently depending on logging conditions. Visual inspection after blow off to ensure thorough cleanliness is vital. Engine exhaust systems provide numerous small pockets where saw dust, small wood chips and other flammable forest debris can gather. Even small accumulations close to hot exhaust components can ignite and smolder. If 1.9

8. 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.

9. 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.

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

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

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

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

14. 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.

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

Tigercat T250 Loader

Safety WHAT TO DO IN CASE OF A MACHINE FIRE

FIRE PREVENTION continued

•

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

•

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

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

•

Shut the engine off.

•

Activate the fire suppression system*

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

•

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.

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

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

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

•

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

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

•

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

1.10

•

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.

•

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.

Tigercat T250 Loader

Safety WHAT TO DO AFTER A FIRE

FIRE PREVENTION continued

20229A

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

•

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

•

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

•

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

•

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

1.11

•

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

•

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

•

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

•

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

Tigercat T250 Loader

Safety

1.12

Tigercat 250 Loader

SECTION 2 - CONTROLS & OPERATION OCTOBER 2003 Read and understand the entire manual including Safety section prior to operating any equipment.

Read and understand all manuals for any attachments or accessories used with the loader.

CONTENTS - SECTION 2 AIR COMPRESSOR/VACUUM PUMP......................................................... 2.25 AIR CONDITIONER/HEATER ..................................................................... 2.13 BOOM CONTROLS ....................................................................................... 2.4 CAB CONTROLS ........................................................................................... 2.4 CARE OF THE MACHINE ............................................................................ 2.36 CLEANING LEXAN WINDOWS ................................................................... 2.36 CONTROLS - CAB ANTI-STALL - SWITCH .............................................................................. 2.6 AUXILIARY POWER .................................................................................. 2.8 BULB TEST ~ SWITCH ............................................................................ 2.11 CHARGE TANK - SWITCH ........................................................................ 2.8 CONTROL PANEL ............................................................. 2.5, 2.6, 2.7, 2.8 DIMMER CONTROL ~ GAUGE LIGHTING ............................................. 2.11 DRIVE FOOT PEDAL/LEVER - LEFT TRACK ........................................... 2.5 DRIVE FOOT PEDAL/LEVER - RIGHT TRACK ......................................... 2.5 ENGINE COOLANT TEMP. ~ GAUGE ...................................................... 2.9 ENGINE COOLANT TEMP. ~ RED LIGHT .............................................. 2.10 ENGINE OIL PRESSURE ~ GAUGE ......................................................... 2.9 FOOT PEDAL - SWING ............................................................................. 2.5 HOUR METER ........................................................................................... 2.9 HYDRAULIC OIL TEMP. ~ GAUGE ......................................................... 2.10 HYDRAULIC OIL TEMP. ~ RED LIGHT ................................................... 2.10 LIGHTER .................................................................................................... 2.8 LIGHTS, SERVICE ..................................................................................... 2.8 LIGHTS, WORK ......................................................................................... 2.8 LOW COOLANT ~ LIGHT ........................................................................ 2.10 LOW ENGINE OIL PRESSURE ~ RED LIGHT ........................................ 2.10 LOW HYDRAULIC OIL LEVEL ~ RED LIGHT ......................................... 2.10 PILOT RESET ~ SWITCH .......................................................................... 2.7 PILOT SYSTEM SHUT OFF ~ LIMIT SWITCH .......................................... 2.7 PUMP INLET ~ LIGHT ............................................................................. 2.10 STEERING ................................................................................................. 2.5 SWING BRAKE ~ SWITCH ........................................................................ 2.6 TACHOMETER ........................................................................................ 2.10 THROTTLE CONTROL .............................................................................. 2.9 TRACK DRIVE SWITCH WITH LIGHT ...................................................... 2.5 VACUUM TANK - SWITCH ........................................................................ 2.6 VOLT METER ............................................................................................. 2.9 WINDSHIELD WIPER SWITCH ................................................................. 2.7 CONTROLS - OTHER BATTERY DISCONNECT SWITCH ......................................................... 2.19 CAB TILTING PROCEDURE ................................................................... 2.19 ENGINE START SWITCH, ENGINE COMPARTMENT ........................... 2.19 DELIMBER ARM CONTROLS ....................................................................... 2.4 DIMMER CONTROL, GAUGE ILLUMINATION ........................................... 2.11 ENGINE ANTI-STALL .................................................................................... 2.6 ENGINE COMPARTMENT .......................................................................... 2.18 ENGINE COMPARTMENT ACCESS ........................................................... 2.18 ENGINE, HOT WATER SHUT OFF VALVE ................................................ 2.13 ENGINE, STARTING ................................................................................... 2.33

Tigercat T250 Loader

Controls and operation

ENGINE STOPPING .................................................................................... 2.35 FAN, CAB ..................................................................................................... 2.15 FILTERS AIR FILTER RESTRICTION INDICATOR ................................................ 2.26 ENGINE AIR ............................................................................................. 2.26 FILTERS, A/C AND HEATER ...................................................................... 2.14 FILTERS, CAB FRESH AIR ......................................................................... 2.14 FILTERS, HYDRAULIC OIL, PILOT ............................................................. 2.22 FILTERS, HYDRAULIC OIL, RETURN ........................................................ 2.21 FIRE EXTINGUISHER ................................................................................. 2.15 FLUID LEAKS .............................................................................................. 2.34 FUEL LINE WATER SEPARATOR .............................................................. 2.31 FUEL TANK AND FILLER ............................................................................ 2.27 FUSE AND RELAY PANEL .......................................................................... 2.12 GRAPPLE CONTROLS ................................................................................. 2.4 HAND FILL PUMP, HYDRAULIC OIL .......................................................... 2.23 HORN ............................................................................................................. 2.6 HOT WATER SHUT OFF VALVE (ENGINE) ............................................... 2.13 HYDRAULIC OIL HAND FILL PUMP ........................................................... 2.23 HYDRAULIC OIL RESERVOIR .................................................................... 2.21 HYDRAULIC OIL RETURN MANIFOLD ...................................................... 2.22 HYDRAULIC PRESSURIZATION SYSTEM EARLIER DESIGN .................................................................................... 2.24 LATER DESIGN ....................................................................................... 2.24 JOYSTICK, L.H. ............................................................................................. 2.4 JOYSTICK, R.H. ............................................................................................ 2.4 KEY SWITCH ................................................................................................. 2.8 LIGHT~DOME .............................................................................................. 2.15 MACHINE OPERATION .............................................................................. 2.28 MACHINE PREPARATION ...................................................................... 2.34 PRE-START CHECKS ............................................................................. 2.28 RESTARTING AN ENGINE THAT HAS RUN OUT OF FUEL ................. 2.33 STARTING THE ENGINE ........................................................................ 2.33 STOPPING THE ENGINE ........................................................................ 2.35 MACHINE PREPARATION .......................................................................... 2.34 PILOT SUPPLY SHUT OFF VALVE ............................................................ 2.23 PRESSURIZATION SYSTEM, HYDRAULIC EARLIER DESIGN .................................................................................... 2.24 LATER DESIGN ....................................................................................... 2.24 RADIO, 2-WAY ............................................................................................ 2.15 SEAT ............................................................................................................ 2.16 STARTING THE ENGINE ............................................................................ 2.33 STOPPING THE ENGINE ............................................................................ 2.35 SWING BRAKE .............................................................................................. 2.6 TAPE DECK ................................................................................................. 2.15 VACUUM TANK - SWITCH ........................................................................... 2.6 VACUUM/AIR COMPRESSOR PUMP......................................................... 2.25 WINDOWS ................................................................................................... 2.15 2.2

Tigercat T250 Loader

Controls and operation

2.3

Tigercat T250 Loader

Controls and operation IMPORTANT

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

CAB CONTROLS NOTE All joystick and Foot Pedal controls require pilot pressure. Refer to PILOT RESET in THIS SECTION.

2

1

••

••

380-2

380-1

2. RIGHT HAND JOYSTICK LEVER Stick (Jib) Boom Push the joystick lever forward to move the Stick IN.

1. LEFT HAND JOYSTICK LEVER Hoist Boom Push the joystick lever forward to LOWER the Hoist Boom.

Pull the joystick lever back to RAISE the Hoist Boom.

Pull the joystick lever back to move the Stick OUT.

Grapple Open Move the joystick lever to the left to OPEN the grapple arms.

Grapple Rotate Move the joystick lever to the left to rotate the grapple COUNTER CLOCKWISE(LEFT).

Grapple Close Move the joystick lever to the right to CLOSE the grapple arms.

Grapple Rotate Move the joystick lever to the right to rotate the grapple CLOCKWISE(RIGHT).

THUMB SWITCHES

THUMB SWITCHES

Upper Left ~ Not Used Upper Right ~ Not Used Lower Left ~ Delimber Arms Open* Push to OPEN delimber arms.

Upper Left ~ Not Used Upper Right ~ Not Used Lower Left ~Grapple saw cut Push to EXTEND (cut) with grapple saw.

Lower Right ~ Delimber Arms Close* Push to CLOSE delimber arms.

Lower Right ~Grapple saw retract Push to RETRACT grapple saw.

* When installed, optional function,

2.4

Tigercat T250 Loader

Controls and operation 6

7

8

11

••

•

10

9

•• •

••

• CONTROL PANEL

T250-D04

Depress the foot pedal with the HEEL or pull BACK on the lever to place the RIGHT track in REVERSE drive mode.

Travelling SWING RIGHT

SWING LEFT

Travel is accomplished by turning the track drive switch to the ON position and depressing both foot pedals simultaneously.

Travel over distances should be done in the forward direction to reduce the wear on track components. Track drive gearboxes are considered to be at the rear of the machine when travelling in the forward direction.

•• ••

3 4 5

•

Steering

375-4A

BOOM SWING AND DRIVE FOOT PEDALS 3. FOOT PEDAL - SWING Depress the Left side of the foot pedal to swing left.

Steering the vehicle is achieved by operating the tracks at different speeds and should only be done when moving; rotating the tracks in opposite directions should be avoided where possible.

6. TRACK DRIVE ~ SWITCH WITH LIGHT Placing this switch in the OFF position will prevent the loader from being accidentally driven while loading or unloading.

Depress the Right side of the foot pedal to swing right.

The foot pedal will automatically return to the center position once released. The swing will cease when the foot pedal returns to center.

Place this switch in the ON position to drive the machine. The light in the switch will be ON.

4. DRIVE FOOT PEDAL/LEVER - LEFT TRACK Depress the foot pedal with the TOE or push FORWARD on the lever to place the LEFT track in FORWARD drive mode.

Depress the foot pedal with the HEEL or pull BACK on the lever to place the LEFT track in REVERSE drive mode.

5. DRIVE FOOT PEDAL/LEVER - RIGHT TRACK

7. DRIVE SPEED ~ SWITCH WITH LIGHT Two drive speed ranges are possible. LOW position will provide a slow driving speed.

HIGH position provides a faster speed with reduced driving torque.

Place this switch in the LOW position when maneuvering around the loading area.

The HIGH position should only be used with the loader on flat solid ground. A flat bed trailer should be used to transport the loader over greater distances.

Depress the foot pedal with the TOE or push FORWARD on the lever to place the RIGHT track in FORWARD drive mode.

2.5

Tigercat T250 Loader

Controls and operation 6

7

8

11

•

•

10

9

•• ••

••

•• CONTROL PANEL

T250-D04

9. HORN ~ SWITCH

8. VACUUM TANK - SWITCH WITH LIGHT

This is a two position momentary switch. Press and HOLD this switch to sound the safety alert horn.

This is a two position ON/OFF switch. The light in the switch will come ON to indicate that the vacuum switch is turned ON.

10. SWING BRAKE - switch with light

Relieve any pressure in the tank by OPENING and CLOSING the air vent ball valve. With the key switch in the OFF position and the key removed, turn the vacuum switch to the ON position to run the compressor/vacuum pump This will create a vacuum condition (9 in.Hg) in the hydraulic tank. The vacuum pump will automatically start and stop as necessary to maintain the tank vacuum. The vacuum switch will also lock out the start solenoid to prevent the engine from being started.

This is a two position ON/OFF switch. The light in the switch will come ON to indicate that the swing brake is ON.

Relieve the vacuum in the tank by placing the vacuum switch in the OFF position and OPENING and CLOSING the air vent ball valve.

NOTE: Do not attempt to start the engine until the tank has been pressurized. See CHARGE TANK SWITCH in THIS SECTION. By creating a vacuum in the hydraulic tank, it becomes possible to perform service work on the hydraulic system without the need to drain the hydraulic tank. The vacuum inside the tank will "hold" the oil in the tank. The air compressor used for the hydraulic reservoir pressurization acts a vacuum pump for this purpose with the use of a small solenoid operated diverter valve.

Placing this switch in the ON position will apply the swing brake and prevent the upper structure from turning. The brake is also engaged whenever the pilot system is shut off (left armrest in raised position), but as an added safety precaution, the brake should always be applied with this switch when leaving the cab.

The swing brake is a spring apply, hydraulic release, multi disc brake.

11. ANTISTALL - SWITCH WITH LIGHT This is a two position ON/OFF switch. The light in the switch will come ON to indicate that the antistall system is ON. Use this switch to turn ON the electronic load control system. This will automatically prevent overloading of the engine whenever several high load functions are in use at the same time. It should remain in the ON position during normal machine operation at FULL throttle and in the OFF position when operating at less than FULL throttle.

IMPORTANT: It should be noted that this anti-stall system will only allow full main pump flow with the engine running at speeds above 2100 RPM.

IMPORTANT It is recommended that the start key be removed while servicing the hydraulic system.

Do not attempt to START the machine or turn key to the RUN position. The vacuum pump only operates when the key switch is in the OFF position.

Do not leave machine unattended or overnight with vacuum pump on.

2.6

Tigercat T250 Loader 11

••

10

9

Controls and operation 14

13

12

16

•

•

•

••

T250-D03

19

••

•

••

21

17

20

18

•• ••

••

•

•• CONTROL PANEL

14. PILOT RESET ~ SWITCH

If BOOM, SWING, or ATTACHMENT functions slow down or stop, check to ensure that the engine throttle control is pulled completely out in the FULL throttle position.

This function is provided to prevent accidental or improper use of the controls from anywhere but the operators seat.

If engine stalling occurs, check:

With the engine running and the L.H. arm rest DOWN, push this switch to REACTIVATE the pilot system after it has been deactivated by raising the L.H. arm rest, or by turning the Key switch to the OFF position.

(a) The ANTI-STALL switch is in the ON position. (b) The in-line fuse in the anti-stall electrical system. (c) Malfunction of the anti-stall system.

12. WINDSHIELD WIPER ~ SWITCH

ARMREST

This switch is equipped with 3 levels, Off (Rocker switch back), Low (center position) and High (Rocker switch forward). Do Not use WIPER on a dry window, this may result in scratching.

•• L.H. ARMREST IN DOWN POSITION AND LIMIT SWITCH ON

13. WINDSHIELD WASHER ~ SWITCH

15

The front window wiper is equipped with a window washer fluid nozzle. To operate, depress and hold the Washer button and run WIPER. Release the Washer button and turn off WIPER when window is sufficiently clean.

LIMIT SWITCH ACTUATING LEVER ON SEAT BASE

•

•

The Washer fluid reservoir is located inside the cab. If the loader is to be operated or transported through a climate where freezing temperatures may occur use an antifreeze washer fluid.

247-25

PILOT SYSTEM SHUT OFF

15. PILOT SYSTEM SHUT OFF ~ LIMIT SWITCH When the L.H. arm rest is placed in the UP position, a limit switch shuts OFF the pilot system DEACTIVATING all operating functions. When the L.H. arm rest is placed in the DOWN position, the limit switch closes and turns the pilot system ON. But the operating functions are not REACTIVATED until the PILOT RESET switch is pressed.

If the machine is equipped with a tilting cab, drain the washer fluid to below half full level before tilting the cab.

2.7

Tigercat T250 Loader 11

10

9

••

Controls and operation 14

13

16

•

•

••

21

17

20

••

•

••

•

T250-D03

12

19

18

•• ••

•• ••

•

CONTROL PANEL RUN Position - Battery is connected to all functions. Used for normal machine operation.

16. LIGHTER Depress lighter fully into socket and wait until it pops back up. Pull lighter out of socket and use coil to light cigar(ette). CAUTION: Lighter coil reaches high temperature which can cause burns to skin and can start fire. Handle with care. DO NOT use in presence of explosive or flammable liquids or vapour.

Serious injury, death and/or property damage may result.

START Position - Connects the battery to the start relay to start the engine. Turning the key to this position starts the engine. The key will return to RUN position when released.

21. CHARGE TANK - SWITCH AND LIGHT (LATER MACHINES ) This is a two position momentary switch. Use this switch to operate the hydraulic pressurization system before starting the engine. With the key switch in the OFF position, press and release the charge tank switch to turn ON the air compressor and charge the hydraulic tank. The process may take a moment or two. The air compressor will stop and the GREEN LIGHT will come ON when pressurization of the tank to 4 psi is complete.

17. AUXILIARY POWER A 12 volt outlet with 20 amp capacity for portable devices such as phones.

18. SERVICE LIGHTS This switch controls the service light located in the engine enclosure. The circuit draws current directly from the battery and is protected by a fuse located in the fuse box.

19. WORK LIGHTS

NOTE: The green light will go out when the key switch is moved to the START and RUN positions. The charge tank switch and light only have power when the key switch is in the OFF position.

This switch controls the work lights located on the front of the cab and on the stick boom.

The circuit draws current directly from the battery and is protected by a fuse located in the fuse box.

Refer to HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN), MACHINE OPERATION ~ PRE-START CHECKS and STARTING THE ENGINE in THIS SECTION for more information.

20. KEY SWITCH This is a three position switch labelled OFF/ RUN/START. OFF Position - All electrical power through the Key switch is turned OFF.

IMPORTANT: To avoid damage to pumps and other hydraulic system components, DO NOT start the engine unless the hydraulic tank is pressurized.

Electrical power is still available for the horn, lighter, tape deck, 2 way radio, cab dome light, defroster fan, work lights and service light, also the hydraulic tank pressurization/ vacuum system on later machines.

2.8

Tigercat T250 Loader

Controls and operation 23

26

25

24

22

••

•

•

••

371-17AX

THROTTLE CONTROL 22. THROTTLE CONTROL

••

GAUGES

371-11A

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

The throttle control should not be moved unless the key is in the RUN position otherwise damage to the fuel control solenoid and linkage may result.

24. VOLT METER

The throttle control is adjusted by pushing the button in the center end knob and raising or lowering the throttle control.

Normal operating range between 12-13.5 volts.

A reading in excess of 15 volts indicates a possible faulty voltage regulator.

For LOW IDLE engine RPM, push the center button and lower the throttle control completely.

A reading of less than 12 Volts indicates a possible faulty battery or alternator.

To INCREASE engine RPM, push the center button and raise the throttle control until the engine speed required is reached.

25. ENGINE COOLANT TEMP. ~ GAUGE The gauge labelled WATER TEMPERATURE displays the current engine coolant temperature.

Maintaining Correct Engine Speed The engine RPM should checked regularly with a hand tachometer and adjusted as necessary.

The normal operating range is between 181°F and 203°F. If the temperature rises beyond 210°F, reduce the load on the engine and check for a plugged radiator. If the temperature does not drop, stop engine and determine cause. Do not continue to operate machine.

Low Idle - 950 rpm (No Load) High Idle - 2400 rpm Max. (No Load) The above values are taken with the hydraulic and engine oil at normal operating temperature and without any functions operating.

26. ENGINE OIL PRESSURE ~ GAUGE This oil pressure gauge indicates the engine oil pressure while the engine is running.

WARNING

The oil pressure must be greater than 15 psi at all times. If the oil pressure drops below 15 psi at any time, stop the engine and determine cause. Check engine oil pressure every time the engine is started.

At no time should the high idle speed exceed the recommended value as serious damage to the pumps will result.

The oil pressure at high idle and full load should normally operate between 30 and 60 psi.

NOTE: At low idle rpm the oil pressure will be low. This is not an abnormal condition, however it must be closely monitored.

2.9

Tigercat T250 Loader 27

28

29

•

30

•• ••

Controls and operation 35

•

31

••

32

•

FILLER CAP

33 34 36

••

•

•

••

••

T250-D05 GAUGES AND WARNING LIGHTS 27. TACHOMETER

This meter indicates the rpm of the engine. For engine rpm values, refer to THROTTLE CONTROL in THIS SECTION. 28. HYDRAULIC OIL TEMP. ~ GAUGE The gauge labelled OIL TEMPERATURE displays the current temperature of the hydraulic oil in the hydraulic reservoir.

If the hydraulic oil temperature rises beyond 180°F, check the following: • • • •

Plugged oil cooler Low hydraulic oil level Malfunction in a hydraulic circuit High loads on the hydraulic system

Do not continue to operate the machine if temperature remains above 180°F. Operation at high hydraulic oil temperature will shorten the life of hydraulic components.

CHECK ENGINE COOLANT LEVEL 32. LOW COOLANT - INDICATOR LIGHT 381-18A

This light comes ON when the engine coolant drops below a safe operating level. If this light turns on, immediately turn off the engine and correct the fault. The engine coolant sensor is located in the side of the radiator surge tank.

The coolant surge tank (reservoir) can be filled through the access panel located on top of the engine compartment. Ensure that the engine has cooled down sufficiently before removing radiator cap. Prior to removing cap, relieve pressure in radiator by loosening cap slowly to first stop. Use the proper solution of coolant antifreeze when filling the surge tank.

33. ENGINE COOLANT TEMP. ~ RED LIGHT This light will come ON when the engine coolant temperature rise above 215°F If this light comes ON stop engine and determine cause. Do not continue to operate machine.

29. HYDRAULIC OIL TEMP. ~ RED LIGHT This light will come ON when the hydraulic oil temperature rise above (205°F) If this light comes ON stop engine and determine cause.

Do not continue to operate machine.

34. PUMP INLET - RED LIGHT

30. LOW HYDRAULIC OIL LEVEL ~ RED LIGHT This light will come on when the oil level falls 13 gal. When the light first comes on stop engine and look for signs of broken hoses or other leaks. Repair leaks and refill the tank to FULL mark on the sight gauge. Restart engine and inspect for leaks.

31. LOW ENGINE OIL PRESSURE ~ RED LIGHT This light will come ON when the engine oil pressure falls below 15 psi. If this light comes ON stop the engine and determine cause.

The hydraulic tank is pressurized to assist pump suction and is referred to as PUMP INLET PRESSURE. If the pressure at the pump inlet drops below 2 psi when the engine is running, the PUMP INLET LIGHT will go ON. If the light comes on during cold start ups reduce engine speed until the hydraulic oil has sufficiently warmed up. If the light comes on during normal operation it may indicate a plugged strainer or higher than normal oil viscosity. If the light stays on, immediate service is required to correct the problem.

CAUTION: Operating machine with this warning light on may result in pump failure.

SERVICE NOTE: Before disconnecting any hoses, release the pressure in the hydraulic tank by opening the ball

2.10

Tigercat T250 Loader

Controls and operation

valve located near the breather.

Refer also to HYDRAULIC PRESSURIZATION SYSTEM EARLIER DESIGN or LATER DESIGN in THIS SECTION. 35. BULB TEST SWITCH Hold this switch in the ON position to test the bulbs in the 6 warning lights; Items 31, 32, 33, 34, 35 and 36. Replace the bulb in any light that does not come ON. If the light does not come ON after inserting a new bulb, check the fuse labelled "gauges". Bulbs should be tested at the start of each shift.

36. DIMMER CONTROL Rotate this control to dim or brighten the back lights in the gauges except for the HOURS gauge. The gauge back lights are ON only when the work lights are ON.

2.11

Tigercat T250 Loader

Controls and operation

FUSE AND RELAY PANEL

250T-D02

1

DIODE MODULE 1

DIODE MODULE 2

DIODE MODULE 3

RELAY 1

RELAY 2

RELAY 3

RELAY 4 2

LOW ENG. OIL PRESS.

PILOT LOCK-OUT

A/CHEATER

LOW HYD. OIL

3 4 5

DIODE MODULE 4

DIODE MODULE 5

RELAY 5

RELAY 30

RELAY 31

RELAY 32

WORK LIGHTS

CHARGE TANK

CHARGE TANK

VACUUM TANK

6 7

GAUGES 5A SAFETY 15A ANTI-STALL 2A JOYSTICKS 15A BK-UP ALRM 15A WIPER/WASH 15A FUEL 10A

8 RADIO/DOME 15A 9 LIGHTER 20A 10 HORN 20A 11 AC/HEATER 25A 12 WORK LIGHTS 25A 13 SERV. LIGHT 15A 14 AUX. POWER 20A

16606B

37. FUSE AND RELAY PANEL The fuse and relay panel is located below the control panel behind a removable cover.

Each circuit of the machine is protected by a fuse. If a fuse is blown it must be replaced by one of the same value. If the fuse blows again, the circuit should be inspected for possible short circuit or other malfunction.

2.12

Tigercat T250 Loader

Controls and operation HOSE TO A/C 41 SHUT-OFF VALVE

HEATER UNIT

C

B

••

E

D

•

•

•• ••

371-11A

A

••

• THROTTLE CONTROL T250-D01

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

HOT WATER SHUT OFF VALVE (CUMMINS 6CTAA8.3 ENGINE SHOWN) 41. HOT WATER SHUT OFF VALVE (ENGINE) To maximize the efficiency of the air conditioning, the HEAT control knob (D) on the A/C Heater control panel must be rotated to the "OFF" position. During times when cab heating is not required, CLOSE the HOT WATER SHUT OFF VALVE located on the engine block, this will prevent hot water from seeping through the A/C unit and thereby reducing the effect of the cooling.

A. A/C ON-OFF switch This is a rocker type switch to turn the A/C ON or OFF. NOTE: The fan speed switch (B) must be ON to run the A/C system.

B. FAN SPEED - OFF-LOW-MED-HIGH This is a rotary, four position switch to control the fan speed.

C. AIR SOURCE - VARIABLE This is a rotary switch to select OUTSIDE fresh air into the cab OR to RECIRCULATE inside air OR a COMBINATION of the two.

D. HEAT - VARIABLE This is a variable dial control to adjust the amount of heated air for the cab. Always ensure this control is OFF when using the air conditioning. See NOTE below.

E. AIR CONDITIONING - VARIABLE This is a variable dial control to adjust the amount of cooled air for the cab.

NOTE: To maximize the efficiency of the air conditioning system, the heat control (D) must be in "OFF" position. Also see HOT WATER SHUT OF VALVE, in THIS SECTION. Also refer to CHECKING THE AIR CONDITIONING SYSTEM in SECTION 3 of THIS MANUAL.

2.13

Tigercat T250 Loader

RECIRCULATION AIR FILTER

Controls and operation

•

A/C HEATER UNIT

68-7C

42. FILTERS Two filters are provided with the heating & A/C unit. One is for filtering re-circulated air from the cab. This is located at the bottom of the heater unit and should be inspected and cleaned on a regular basis. The second is for filtering outside air being drawn into the heater unit. This is located under an access panel on the right hand side of the cab and must be inspected and cleaned/replaced on a regular basis.

FILTER

EXTERNAL AIR FILTER ACCESS PANEL

••

•

LOWER RIGHT SIDE OF OPERATOR'S CAB

245DIG-01

EXTERNAL AIR FILTER

2.14

Tigercat T250 Loader 43

Controls and operation

46

45

44

•• 48

•

•

•

206-13A

••

43. FAN A three position switch; LOW, OFF and HIGH. is located on the base of the fan. The fan orientation is adjusted manually.

381-20A

44. LIGHT - DOME Push the switch on the side of the dome to turn the light ON and OFF.

PORTABLE FIRE EXTINGUISHER

48. FIRE EXTINGUISHER A portable fire extinguisher is located in operator's cab. The extinguisher should be checked daily to ensure that it is charged.

The pointer on the charge gauge should point to the green region. If the indicator falls out of this green area, the extinguisher should be serviced immediately.

45. TAPE DECK/RADIO Includes two front mount speakers. Consult the manufacturer's instruction manual for additional information.

46. 2 WAY RADIO Consult the manufacturer's instruction manual for additional information.

49

ADJUSTABLE ARM

• 205-9A

SLIDING WINDOWS HANDLE R.H. WINDOW AND CAB

49. WINDOWS The right hand window and cab door window are sliding windows and can be opened by pushing on the handle and sliding the window open. To close, slide the widow closed firmly allowing the handle to latch on the frame.

LEFT SIDE OF OPERATOR'S CAB 373-25A CUP HOLDER 47. CUP HOLDER

CAUTION: Windows and door must remain closed while operating machine to prevent debris from entering cab and causing personal injury or property damage.

2.15

Tigercat T250 Loader

Controls and operation RIDE ADJUSTMENT After adjusting height, the ride adjustment should be made by turning the RIDE ADJUSTMENT KNOB counter-clockwise until the seat cushion is level.

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

50. OPERATOR’S SEAT (SEAT'S INC.)

ADJUSTMENTS HEIGHT ADJUSTMENT The spring-assisted height adjustment is controlled by the HEIGHT ADJUSTMENT LEVER located on the front left side of the seat chassis. The four height settings: top, bottom and two in between, provide a total height adjustment of 3”.

4-WAY ADJUSTABLE LUMBAR To position lumbar mechanism vertically, move VERTICAL ADJUSTMENT KNOB up or down. For fore-and-aft displacement, rotate HORIZONTAL ADJUSTMENT KNOB. BACK ANGLE ADJUSTMENT Rotate BACK ANGLE ADJUSTMENT KNOB to place seat at the desired angle.

FORE/AFT SLIDE Move and hold FORE/AFT SLIDE LEVER. Roll seat forward or backward to the desired position relative to the foot pedal controls.

To Raise Firmly lift up on the HEIGHT ADJUSTMENT LEVER. When the lever releases, hold it up while partially lifting the operator’s body weight from the seat. When the seat is at the desired height, firmly push down on the lever until the seat locks (a click should be heard).

4-WAY LUMBAR HORIZONTAL ADJUSTMENT

To Lower Firmly lift up on the HEIGHT ADJUSTMENT LEVER. When the lever releases, partially apply operator body weight to the seat until the seat is at the desired height, firmly push down on the lever.

Hold lever down until the seat locks into position (a click should be heard).

• •• •• ••

4-WAY LUMBAR VERTICAL ADJUSTMENT 4-WAY LUMBAR HORIZONTAL ADJUSTMENT

332-6

RIDE ADJUSTMENT KNOB

• •

••

FORE/AFT SLIDE LEVER 332-1X

•

SEAT ADJUSTMENTS

ARMREST ADJUSTMENT

ARMREST ADJUSTMENT Each armrest has 2 adjustments to place it in the required position. Loosen adjustment locking wingbolts to reposition armrest height and fore/aft position.

••

••

RIGHT SIDE OF SEAT

BACK ANGLE ADJUSTMENT KNOB HEIGHT ADJUSTMENT LEVER

2.16

Tigercat T250 Loader

Controls and operation

PROBLEMS AND CORRECTIVE ACTION RIDES TOO STIFF/SEAT TENDS TO PUSH OR THROW OPERATOR FORWARD The RIDE ADJUSTMENT KNOB has been tightened (turned counter-clockwise) too much.

This typically happens because the operator is trying to use additional RIDE ADJUSTMENT KNOB rather than the HEIGHT ADJUSTMENT LEVER to raise the seat. Operator is riding the seat in the low height position setting. Refer to HEIGHT ADJUSTMENT. RIDES TOO SOFT OR BOTTOMS OUT AND PINCHES OPERATOR The seat RIDE ADJUSTMENT KNOB has not been tightened (turned counter-clockwise) enough. Insufficient ride adjustment exaggerates the knee-action movement of the seat. This usually happens because the operator is trying to lower the seat by decreasing the amount of ride adjustment instead of using the HEIGHT ADJUSTMENT LEVER. Refer to HEIGHT ADJUSTMENT. SEAT TOO HIGH/SEAT TOO LOW There are several things which can cause improper seat height. Refer to the HEIGHT ADJUSTMENT and adjust seat to the desired position. If the proper height cannot be reached using one of the four height adjustment settings, it may be necessary to install the seat on a higher base.

OPERATOR’S LEGS FALLING ASLEEP The seat is adjusted too high, and the RIDE ADJUSTMENT KNOB has not been tightened (turned counter-clockwise) enough, resulting in the operator sitting in a “bucket”. Refer to HEIGHT ADJUSTMENT and RIDE ADJUSTMENT.

2.17

Tigercat T250 Loader

Controls and operation

ENGINE COMPARTMENT

PUMPS MAY VARY

•

250-P06

250-03

ENGINE COMPARTMENT ACCESS REAR (LATER DESIGN)

REAR ACCESS (TYPICAL)

LEFT SIDE ACCESS

250-02

RADIATOR

HINGE OUT A/C CONDENSER

• •• T250-D06

REAR ACCESS (LATER MACHINES)

T250-D08

FRONT ACCESS (LATER MACHINES)

•

OIL COOLER 206-6A RIGHT SIDE ACCESS ENGINE COMPARTMENT ACCESS

There are 3 hinged doors and one removable panel provided to allow access to the engine compartment from all four sides. The doors are secured by a retaining knob on each door, unscrew this knob to release the door. The access panel is removed by lifting the latches outwards, tuning them 90° and then lifting the panel up and out.

2.18

Tigercat T250 Loader

Controls and operation ENGINE START SWITCH

•• BATTERY DISCONNECT SWITCH

372-9A

••

RIGHT SIDE LOWER PANEL

BATTERY DISCONNECT AND ENGINE START SWITCHES

BATTERY DISCONNECT SWITCH

••

This switch completely disconnects all electrical circuits on the machine from the battery and is located just inside the front access panel. It is good practice to turn this switch to OFF whenever the machine is left idle for an extended period of time (overnight etc.).

•• 4-RETAINING BOLTS

ENGINE START SWITCH (OPTIONAL) This is a three position switch labelled OFF/ RUN/START. The switch is used to start the engine when it is necessary to tilt the cab.

Refer to CAB TILTING PROCEDURE in THIS SECTION.

CAB TILTING

199-16

CAB TILTING PROCEDURE (OPTIONAL) 1. Park machine on level ground.

OFF Position - All electrical power through the Key switch is turned OFF.

2. Stop the engine.

RUN Position - Battery is connected to the engine fuel solenoid. No other machine functions are operable.

4. Drain windshield washer fluid in reservoir to below half full level.

3. Remove all loose items from the cab.

5. Remove the 4 retaining bolts securing the right side lower panel and swing open the lower panel.

START Position - Connects the battery to the start relay to start the engine. Turning the key to this position starts the engine. The key will return to RUN position when released.

CAB

• ••

• LOCKING BOLT

UPPER FRAME 286-19A

CAB LOCKING BOLT

6. Reach behind cab and remove the locking bolt securing the cab to the frame.

7. Close the right side lower panel and secure in place with the 4 retaining bolts.

2.19

Tigercat T250 Loader

Controls and operation

8. Start the engine using engine start switch in engine compartment.

RIGHT SIDE LOWER PANEL

9. Ensure that there are no obstacles in front of the cab that would prevent the cab from tilting.

•• ••

RETAINING CHAIN

T250-D07

LOCKING BOLT HOLES

••

CAB TILT LEVER

10. Using the cab tilt lever, tilt the cab forward until the retaining chain is tight.

WARNING Ensure that there are no personnel in the immediate area surrounding the cab when performing the CAB TILT function

••

NOTE: Never leave the cab partially tilted. It should always be either fully forward or fully closed.

289-21X

11. Stop the engine.

12. Use the reverse procedure to place the cab in the operating position.

2.20

CAB TILTING

Tigercat T250 Loader

Controls and operation HYDRAULIC OIL RETURN FILTERS (4 TOTAL)

•

RESERVOIR HYDRAULIC OIL SIGHT GAUGE/ SENDER

• PUMP INLET PRESSURE SWITCH

• •• ••

••

•• PILOT PUMP SUCTION LINE SHUT-OFF VALVE

••

HYDRAULIC PUMPS (LINDE SHOWN)

T250-D09

•• •

••

SENDER & SWITCH HYDRAULIC OIL TEMPERATURE

• •

SUCTION TUBES

HYDRAULIC OIL RESERVOIR RETURN MANIFOLD

DOUBLE FILTER HEADS

•

•

••

1-WATER ABSORBING RETURN FILTER (COLOUR BLUE) 358-17

••

If the oil level drops, inspect the machine including all fittings and hydraulic components for leaks. Once the source of the oil loss is located and repaired, oil can be added to the reservoir.

••

LOW LEVEL SENDING UNIT

• T250-D10

OIL LEVEL SIGHT GAUGE/SENDER

HYDRAULIC RETURN FILTERS The majority of return oil entering the hydraulic tank passes through 4 spin-on hydraulic oil filters. One of the filters is a water absorbing filter (color blue) which is in place to assist with the removal of unwanted moisture from the hydraulic oil (the filters are rated 10m abs).

Each filter head has a bypass valve with a 25 psi cracking pressure so that oil can bypass the filters if they become restricted.

••

•

A sight gauge on the front of the reservoir is visible from the front access panel or the left hand side door. The hydraulic oil level must be kept between the HIGH and LOW limits at all times. A low level switch is incorporated into the level indicator, when the hydraulic oil reaches this level the switch turns a warning light ON SIGHT GAUGE in the operator's cab.

Allowing the level to drop below the LOW limit can result in severe damage to hydraulic components.

••

ENGINE START SOLENOID RELAYS

HYDRAULIC OIL RESERVOIR

•• 3-HYDRAULIC RETURN FILTERS

HYDRAULIC RETURN FILTERS

2.21

Tigercat T250 Loader FROM OIL COOLER "OUT"

Controls and operation

FILTER RESTRICTION INDICATOR

OIL SAMPLING CONNECTOR

••

••

• CHECK VALVES

FROM SWING BRAKE

••

FROM OIL HAND FILL PUMP

•

OIL COOLER BYPASS CHECK VALVE (50 PSI)

•

•

PILOT FILTER ELEMENT

•

•

FROM SWING MOTOR

TO OIL COOLER "IN"

CHECK VALVE

•

LOCATED LOWER LEFT SIDE OF ENGINE COMPARTMENT

FROM MAIN VALVE

••

• • HYDRAULIC OIL RETURN MANIFOLD •

250-P01

HYDRAULIC PILOT FILTER HYDRAULIC PILOT FILTER 383-11

The "in" side of the filter heads are connected to a return manifold. A filter restriction indicator and an oil sampling connector are mounted onto the manifold.

To check the condition of the filter elements; With the hydraulic oil at normal operating temperature, place engine throttle control to FULL and with no machine functions operating, the filter restriction indicator should be in the GREEN zone. If the pointer is in the RED zone replace all four filter elements.

A single element filter head filters all pilot oil prior to entering the pilot system. The filter head has a built-in bypass valve with a 50 psi cracking pressure so that oil can bypass the filter if the element becomes restricted.

The return filters and the pilot filter should be checked and replaced as per the maintenance schedule in SECTION 3 of THIS 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, See SECTION 3 in THIS MANUAL. Use of hydraulic oil filters other than the Tigercat brand could lead to severe wear and rapid failure of hydraulic system components.

2.22

Tigercat T250 Loader

Controls and operation HYDRAULIC TANK

BALL VALVE (SHOW OPEN)

PLASTIC TIE TO PILOT PUMP

••

OIL FILL SHUT-OFF VALVE

••

•• •

240B-D21

••

HAND FILL PUMP

PILOT SUPPLY SHUT OFF VALVE

••

PILOT SUPPLY SHUT OFF VALVE A shut-off valve is installed in the pilot suction line at the hydraulic tank connection. Use this valve to isolate the pilot hydraulic system when disconnecting any hoses or fittings. A plastic tie is installed on the shut off valve at the factory to prevent the valve from being accidentally turned to the CLOSED position when the engine is running, this could cause serious damage to the pilot pump. The tie should be replaced whenever it is taken off to operate the shut off valve.

••

381-9A

OIL FILL HOSE IN STORED POSITION

HYDRAULIC HAND FILL PUMP

HYDRAULIC OIL HAND FILL PUMP The hydraulic hand fill pump is used to add oil to the hydraulic reservoir and is located inside the engine compartment near the front left corner. It is accessible from the front access panel.

To add oil to the reservoir; Depressurize tank, Remove hose clamp from end of fill hose, remove hose from stored position, thoroughly clean outside surface of fill hose and insert end into supply drum. Open the oil fill shut-off valve and operate the pump. The oil is pumped directly into the hydraulic reservoir passing through the filters on the return lines of the hydraulic system. The pump should always be operated at a medium speed with steady motion. Pumping too fast may cause oil to bypass oil filter. When the sight gauge reads between LOW and HIGH cease pumping and return handle to upright position.

IMPORTANT: Close oil fill shut-off valve, place hose in stored position and secure with the hose clamp.

2.23

Tigercat T250 Loader

Controls and operation

HYDRAULIC PRESSURIZATION SYSTEM (EARLIER DESIGN ONLY)

To pressurize the tank; Remove hose clamp from end of suction hose, remove hose from stored position and operate hand pump until a gauge reading of 3 psi is obtained, this will prime the tank.

PRESSURE REGULATOR VALVE

LINE FROM TURBO ENGINE MANIFOLD

IMPORTANT: Close oil fill shut-off valve, place hose in stored position and secure with the hose clamp.

• •

PRESSURE GAUGE

To set pressure regulator:- Refer to HYDRAULIC PRESSURIZATION SYSTEM, SERVICING (EARLIER DESIGN) in SECTION 3 of THIS MANUAL.

•• •• LINE FROM HYDRAULIC TANK

381-15A

Before disconnecting any hoses, release the pressure in the hydraulic tank by opening the air vent valve.

HYDRAULIC TANK REGULATOR

BREATHER VALVE

VENT FILTER

• •

SERVICE NOTE:

•

HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN)

••

The hydraulic reservoir is pressurized to assist pump suction, this pressure is referred to as PUMP INLET PRESSURE. On later machines, the hydraulic oil reservoir is pressurized, before machine start-up, by an air compressor to 4 psi.

AIR VENT VALVE

HYDRAULIC TANK 383-4

IMPORTANT: DO NOT start the engine unless the hydraulic reservoir is pressurized to 4 psi.

Starting the engine before pressurizing the hydraulic reservoir will result in damage to pumps and other hydraulic components.

HYDRAULIC TANK VENT FILTER

On early machines, the hydraulic oil reservoir is pressurized by turbocharger air from the engine and regulated to 3 psi by the regulator valve. This is to assist pump suction and is referred to as PUMP INLET PRESSURE. To prevent the possibility of over pressurizing the tank, a vent filter with a separate relief valve (breather valve) is used. It is preset to release at 10 psi. If the pressure falls below 2 psi the PUMP INLET PRESSURE warning light in the cab will come ON.

CHARGE TANK SWITCH AND GREEN LIGHT

•

AIR REGULATOR/PRESSURE GAUGE This valve regulates the supply of turbo air from the engine to the hydraulic tank to a fixed value of 3 psi. The setting must be between 3 and 4 psi.

A pressure gauge is installed on the tank side of the regulator to monitor the pressure in the tank.

NOTE: If tank pressure is below 2 psi at start-up use the hand fill pump to pressurize the tank to 3 psi.

Do not start engine unless the hydraulic tank is pressurized to 3 psi.

Do not run a cold engine above LOW IDLE to generate turbo air pressure.

2.24

250-P02

••

CHARGE TANK SWITCH (LATER MACHINES)

CHARGE TANK SWITCH The hydraulic pressurization system is operated by the CHARGE TANK switch in the cab or on the control box in the engine enclosure on earlier machines. Refer to CHARGE TANK SWITCH in THIS SECTION for operating instructions.

Tigercat T250 Loader

Controls and operation

AIR COMPRESSOR/VACUUM SOLENOID VALVE

RELIEF VALVE

PRESSURE GAUGE

When this valve is energized by placing the vacuum switch in the ON position, the pump is in a vacuum mode. When de-energized, vacuum switch in OFF position, the pump is in compression mode.

AIR VENT BALL VALVE

RELIEF VALVE

••

•

VENT FILTER

To prevent the possibility of over pressurizing the hydraulic reservoir the system is equipped with a relief valve. The relief valve is preset to release at 10 psi.

•

••

••

To set pressure relief valve, Refer to HYDRAULIC PRESSURIZATION SYSTEM, SERVICING (LATER DESIGN) in SECTION 3 of THIS MANUAL.

AIR COMPRESSOR/ VACUUM PUMP

•

250-P05

VACUUM PUMP SWITCH

••

HYDRAULIC TANK

HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN/EARLIER MACHINES)

VENT FILTER AIR COMPRESSOR/VACUUM SOLENOID VALVE

To prevent contamination of the hydraulic oil, pressurized air entering the hydraulic tank passes through a vent filter.

••

PUMP INLET - WARNING LIGHT If the pressure falls below 2 psi the PUMP INLET warning light in the cab will come ON. Refer to WARNING LIGHTS~PUMP INLET in THIS SECTION.

VENT FILTER

AIR COMPRESSOR/ VACUUM PUMP

•

••

PRESSURE GAUGE A pressure gauge is installed for use when checking the system for correct pressurization level and relief settings. Refer to HYDRAULIC PRESSURIZATION SYSTEM, SERVICING (LATER DESIGN) in SECTION 3 of THIS MANUAL.

250-04

RELIEF VALVE PRESSURE GAUGE

AIR COMPRESSOR/ VACUUM PUMP

AIR COMPRESSOR/VACUUM PUMP The air compressor/vacuum pump is used to perform two functions in the hydraulic pressurization system. First it is used as an air compressor to provide the required 4 psi pressure for the hydraulic tank. Second it is used as a vacuum pump to "hold" the oil in the hydraulic tank when work is being done on the hydraulic system.

AIR VENT BALL VALVE

•• •

••

Refer also to HYDRAULIC PRESSURIZATION SYSTEM, SERVICING (LATER DESIGN) and VACUUM PUMP (LATER DESIGN ONLY) in SECTION 3 of THIS MANUAL.

VENT FILTER

•• ••

250-P5

HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN/LATER MACHINES)

2.25

Tigercat T250 Loader

Controls and operation

AIR CLEANER

AIR INTAKE GRILL

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

AIR INTAKE TUBE

••

AIR FILTER

INDICATOR

•

••

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

1/4" HOSE CONNECTION

••

••

FILTER RESTRICTION INDICATOR FILTER RESTRICTION INDICATOR

250-P04

A filter restriction indicator is located in the engine enclosure beside the air intake grill.

The indicator is remote mounted and is connected to the outlet side of the air filter with a 1/4" diameter hose. Service to the filter is required when the indicator shows RED. This indicator provides a continuous reading whether the engine is running or is shut down.

After servicing the filter, reset the indicator by pressing down on the reset button.

AIR CLEANER UNLOADER VALVE 382-12A

AIR CLEANER UNLOADER VALVE

••

This rubber valve on the tube of the air cleaner housing should be checked at the beginning of every shift. (8 hours) If this valve is missing, damaged or has become hard, it will cause the air cleaner to become ineffective. The unloader valve should be replaced every 1000 hours.

AIR CLEANER

Remove the unloader valve from the tube of the air cleaner housing.

Check and clean the valve. A good valve should be soft and flexible. If it is plugged, then check the filter elements, they may need replacing. Re-attach the valve to the tube.

205-19AC

AIR CLEANER PRIMARY ELEMENT

The valve should suck closed at about 1/3 of full throttle.

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

Refer to SECTION 3 of THIS MANUAL for service intervals and additional AIR CLEANER MAINTENANCE instructions.

205-22AC

AIR CLEANER SAFETY ELEMENT

2.26

Tigercat T250 Loader

Controls and operation

FUEL TANK AND FILLER

AIR VENT PASSAGE

The tank is located underneath the cab and has a capacity of 80 US gallons. The fuel filler is located on the front of the machine below the cab.

••

To add fuel to the tank on current machines place the fill nozzle in the inner fill tube, air from the tank will vent out via the air vent passage.

INNER FILL TUBE

•

FUEL FILL

248-20

•• FUEL SIGHT GAUGE

248-18

2.27

FILLER TUBE

•

FUEL TANK AND FILLER

Tigercat T250 Loader

Controls and operation

MACHINE OPERATION

PRE-START CHECKS

Prior to operating the machine, ensure that the proper lubrication and maintenance schedule has been performed as outlined in SECTION 3 of THIS MANUAL. For the Diesel Engine supplied with the machine, Refer to the engine manufacturers operator’s manual .

Any personnel who is to operate this machine must be fully trained in safety and operating procedures by a competent person.

Read and understand this entire manual prior to operating machine.

250-D09 KEY SWITCH - OFF 1. Ensure Key switch is in the OFF position.

•

CHECK FIRE EXTINGUISHER

•• 381-20A

PORTABLE FIRE EXTINGUISHER

2. Check fire extinguisher is sufficiently charged.30

RESERVOIR

••

LEFT SIDE OF OPERATOR'S CAB 373-25A

CHECK WINDSHIELD WASHER LEVEL

3. Check windshield washer fluid level.

2.28

Tigercat T250 Loader

Controls and operation

WARNING LIGHTS

••

BULB TEST SWITCH

T250-D05

•

••

••

• •

•

SIGHT GAUGE

CHECK WARNING LIGHTS

••

4. Check that all warning lights are functioning properly by using the bulb test switch.

••

FUEL SIGHT GAUGE

LOW LEVEL SENDING UNIT

•• 248-20

CHECK FUEL LEVEL (LATER MACHINES)

5. Check fuel level.

T250-D10

CHECK HYDRAULIC OIL LEVEL

6. Check that the hydraulic oil level is between the HIGH and LOW marks on the level gauge.

ENGINE OIL LEVEL DIPSTICK

•

381-12A CHECK ENGINE OIL LEVEL 7. Check that the engine oil level is between the ADD and FULL marks on the dipstick.

2.29

Tigercat T250 Loader

Controls and operation

AIR FILTER RESTRICTION INDICATOR

PRESSURE GAUGE

••

•• 381-15A

HYDRAULIC TANK PRESSURE GAUGE (EARLIER DESIGN)

8a. MACHINES WITH EARLIER DESIGN PRESSURIZATION SYSTEM ONLY

CHECK AIR FILTER RESTRICTION INDICATOR

250-P07

Check pressure gauge to ensure that hydraulic tank pressure is 3psi. Do not start engine unless the hydraulic tank is pressurized to 3 psi. Refer to HYDRAULIC PRESSURIZATION SYSTEM (EARLIER DESIGN) in THIS SECTION for pressurization instructions.

9. Check air cleaner filter restriction indicator.

AIR CLEANER

•

CHARGE TANK SWITCH AND GREEN LIGHT

AIR CLEANER UNLOADER VALVE

CHECK AIR CLEANER

205-9

••

••

10. Check air cleaner unloader valve.

•

FILLER CAP

CHARGE TANK BEFORE STARTING ENGINE 8b. MACHINES WITH LATER DESIGN PRESSURIZATION SYSTEM ONLY 250-P02

Always operate the charge tank switch and wait for the green light to come on. This indicates that the hydraulic reservoir has been pressurized to 4psi. Do not start engine unless the hydraulic reservoir has been pressurized , damage to hydraulic pumps and other hydraulic components may result.

Refer to CHARGE TANK SWITCH in THIS SECTION for complete instructions.

••

248-25

CHECK ENGINE COOLANT LEVEL

11. Check engine coolant level.

2.30

Tigercat T250 Loader

Controls and operation HALF FILL RESERVOIR WITH RECOMMENDED OIL AS SPECIFIED IN SECTION 3 OF THIS MANUAL

••

CONNECTING HOSE TO GEARBOX 206-16A

•

SWING DRIVE GEARBOX OIL RESERVOIR

CHECK ENGINE BELT(S)

T250-D11

12. Check tension and condition of all engine belts.

FUEL LINE WATER SEPARATOR

CONNECTING HOSE FROM OIL RESERVOIR

••

383-18

••

SWING DRIVE MOTOR

• • OIL FILL TUBE SWING DRIVE GEARBOX

206-15A

WATER SEPARATOR BOWL 216-2A

••

•• DRAIN TAP

14. Drain water from fuel line water separator at the start of each shift.

SWING DRIVE GEARBOX

13. Check swing drive gearbox oil level.

2.31

Tigercat T250 Loader

Controls and operation

RADIATOR HINGE OUT A/C CONDENSER

•

CAB

• ••

•

LOCKING BOLT

UPPER FRAME

••

CAB LOCKING BOLT

286-19A

OIL COOLER

17. If cab has been tilted, ensure that it is secured to the frame with the locking bolt(s).

CLEAN RADIATOR AND OIL COOLER, (EARLIER MACHINES)

206-6A

••

CRACKING RADIATOR

BENT

CHARGE AIR COOLER WARN HOLES

HINGE OUT A/C CONDENSER EDGE WEAR

•• •

••

EDGE WEAR BROKEN EDGE 830-02 CHECK CONDITION OF TRACK SHOES 18. Check condition of track pads.

• T250-D12

OIL COOLER

SAG DIMENSION; 4" TO 6" FOR NORMAL OPERATIONS

CLEAN RADIATOR AND OIL COOLER, (LATER MACHINES)

853ILL8

15. Clean radiator/oil cooler/turbo air cooler and all screens and doors.

16. Ensure all doors and access panels are closed and securely fastened.

MEASURING SAG DIMENSION

19. Check track chain tension.

20. Inspect machine for leaks, damage or loose components or any other abnormal conditions.

21. Perform SCHEDULED MAINTENANCE as outlined in SECTION 3 of THIS MANUAL.

2.32

Tigercat T250 Loader

Controls and operation

STARTING THE ENGINE CAUTION

1. Ensure Pre-Start Checks have been performed and that the area is clear of personnel prior to starting the machine.

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

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

Check all gauges often during the warm-up period.

IMPORTANT DO NOT start the engine unless the hydraulic reservoir has been pressurized. Starting the engine before pressurizing the hydraulic reservoir will result in damage to pumps and other hydraulic components.

2. Turn key switch to RUN position.

3. Sound horn to warn personnel of machine start-up.

4. Move the throttle control to LOW IDLE position 5. Turn key switch to the START position.

6. When engine starts release key to RUN position.

NOTE: If engine does not start after three attempts, check the fuel system. Absence of Blue or White smoke coming out of the exhaust pipe indicates that no fuel is being delivered.

RESTARTING AN ENGINE THAT HAS RUN OUT OF FUEL 1. If the engine has run out of fuel the fuel line must be primed.

2. Ensure key is turn to OFF. 3. Refill fuel tank completely.

4. Remove engine fuel filter and fill with clean fuel.

5. Bleed the system according to the engine manufacturer’s operator’s manual.

6. Crank the engine until it starts. Do Not crank longer than 20 seconds. Wait 2 minutes between each attempt.

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

WARNING Do not attempt to operate any function or accessory while starting the engine. Serious injury or property damage may result.

CAUTION To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.

Wait 2 minutes between each attempt to start the engine.

If engine fails to start, refer to engine manufacturers maintenance manual.

2.33

Tigercat T250 Loader

Controls and operation

MACHINE PREPARATION

(m) Lower the throttle control to LOW IDLE.

Prior to commencing any log loading operations follow steps (a) through (p) to accomplish the following:

(n) Exit cab and visually inspect machine for leaks or other machine damage. Ensure that machine is in proper working order and is in safe condition before continuing operation.

•

Warm up the hydraulic system.

•

Test all systems for proper operation.

•

Inspect for hydraulic oil leaks.

WARNING

CAUTION If any system or function fails to respond correctly to the controls, stop the machine preparation procedure and notify a mechanic.

Failure to do so may result in damage to hydraulic pumps and other components.

Never use your bare hand to check for fluid leaks.

Fluid leaks under pressure may not be visible.

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

(a) Perform PRE-START CHECKS, STARTING THE ENGINE procedures as outlined in THIS SECTION. (b) Sound horn to warn personnel of machine operation. (c) Ensure gauges and warning lights are indicating normal operating conditions. (d) Check that all personnel are safe and clear of the machine. (e) Ensure both armrests are in the lowered position and press the PILOT RESET button. (f) Raise the throttle control to MID position. (g) Slowly raise and lower the hoist boom and stick boom and check for proper operation. (h) With the grapple raised slightly off the ground, test the grapple rotate in both directions and test the open and close functions. (i) Operate the swing in both direction to ensure proper operation. (j) Test all accessory equipment including delimber, top saw, slasher saw etc. where applicable. (k) Continue testing and operating various functions until engine and hydraulic oil has warmed up to near normal operating temperatures. Never load the machine until it has sufficiently warmed up. Doing so may cause damage to the engine and hydraulic components. (l) Lower the grapple onto stable ground ensuring grapple and booms are fully supported.

2.34

Tigercat T250 Loader

Controls and operation

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

1. Ensuring grapple and booms are fully supported by lowering grapple onto the trailer or stable ground.

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

3. Ensure all controls are in neutral positions and that all accessories and functions are turned off.

4. Do not race engine before shut-off 5. Stop engine by turning Key switch to the OFF position.

6. Ensure grapple and booms are fully supported and that all functions are turned off. Remove key from switch, lock up cab and turn battery disconnect switch to OFF prior to leaving the machine.

2.35

Tigercat T250 Loader

Controls and operation

CARE OF THE MACHINE

Removing hairline Scratches.

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

1. Ensure that all fluid levels are always at the proper level. Refer to the LUBRICATION AND MAINTENANCE SCHEDULE provided in SECTION 3 of THIS MANUAL. 2. Follow proper procedure for cleaning windows described in this section.

3. Lubricate all necessary points as per the maintenance schedule provided.

4. Never apply a load to a cold engine.

Some important Dont’s

5. Close and secure all doors and access panel prior to operating machine.

Don’t use abrasive or highly alkaline cleaners on LEXAN sheet products

6. Clean machine including all platforms, inside engine enclosure and around radiator of all dirt and debris on a regular basis.

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

7. Keep all steps, ladders and platforms clear of oil and other material or debris that can cause an unsafe condition.

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

8. Ensure grapple head or boom is resting securely before shutting down the machine or servicing.

Don’t clean LEXAN in direct hot sunlight or at elevated temperatures.

Compatible Cleaning Agents Aqueous solutions of soaps and detergents

CLEANING LEXAN WINDOWS (Windshield and Skylight)

• Formula 409 • Top Job • Freon T.F. • VM&P grade naphtha • Joy • Windex with Ammonia D • Palmolive Liquid GRAFFITI REMOVAL

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

(A) Butyl Cellosolve (for removal of paints, marking pen inks, etc.) The use of masking tape, adhesive tape or lint removal tools works well for lifting off old weathered paints.

3. Rinse with lukewarm water.

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

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

GASOLINE SHOULD NOT BE USED.

To remove wet paint, glazing compound or grease, rub lightly (not in direct sunlight) with a good grade of VM&P naphtha, isopropyl alcohol or butyl cellosolve (2-Butoxy Ethanol), then wash and rinse thoroughly. DO NOT USE GASOLINE, Gasoline or oil will cause uncoated LEXAN to become opaque.

MARGUARD coated LEXAN will start to become opaque around the edges and creep inwards.

2.36

Tigercat T250 Loader

SECTION 3 - LUBRICATION & MAINTENANCE MARCH 2004

CONTENTS - SECTION 3 AIR CLEANER ...........................................................................................................

AIR CONDITIONING SYSTEM A/C SYSTEM TOTAL CAPACITIES .....................................................................

CHECKING SYSTEM ............................................................................................

AIR INTAKE MAINTENANCE AIR CLEANER .......................................................................................................

AIR CLEANER UNLOADER VALVE .....................................................................

FILTER RESTRICTION INDICATOR ....................................................................

INTAKE TUBING AND JOINTS .............................................................................

3.18 3.11 3.11 3.18 3.19 3.19 3.19

CYCLE TIMES, CYLINDERS, FACTORY SETTINGS .................................... 3.27, 3.29 FILTERS ENGINE AIR FILTER ............................................................................................ 3.18 ENGINE FILTERS ................................................................................................. 3.12 FUEL FILTER/WATER SEPARATOR .................................................................. 3.12 FUEL FILTER/WATER SEPARATOR, REMOTE ................................................. 3.12 HYDRAULIC OIL RETURN FILTERS ................................................................... 3.14 PILOT RETURN PRESSURE FILTER ................................................................. 3.16 REMOVE AND REPLACE ..................................................................................... 3.12 SERVICING GUIDELINES FOR OIL FILTERS .................................................... 3.15 FIRE PREVENTION .................................................................................................... 3.3 GENERAL MAINTENANCE ........................................................................................ 3.3 HYDRAULIC OIL RETURN FILTERS ....................................................................... 3.14 HYDRAULIC OILS, APPROVED ................................................................................ 3.7 HYDRAULIC TANK PRESSURIZATION SYSTEM EARLIER DESIGN ................................................................................................. 3.20 LATER DESIGN .................................................................................................... 3.22 LUBRICATING CYLINDER PINS AND BOOM JOINTS ............................................ 3.4 LUBRICATION POINTS .............................................................................................. 3.8 NEW MACHINE MAINTENANCE ...............................................................................

FIRST 50-100 HOUR INSPECTION AND SERVICE REPORT .............................

INITIAL PRE-DELIVERY INSPECTION ..................................................................

TIGHTENING POINTS ............................................................................................

3.2 3.2 3.2 3.2

OIL LOST FROM LEAKAGE CHART .......................................................................... 3.2 PILOT RETURN PRESSURE FILTER ...................................................................... 3.16 PRESSURE SETTING PROCEDURES. SEE SERVICE MANUAL PRESSURE SETTINGS, S/N 250T0111 TO 250T0115 ........................................... 3.26 PRESSURE SETTINGS, S/N 250T0131 AND UP ................................................... 3.28 PREVENTIVE MAINTENANCE SCHEDULE .............................................................. 3.2 SCHEDULED MAINTENANCE EVERY 8 HOURS: ................................................................................................... 3.4 EVERY 24 HOURS: ................................................................................................ 3.4 EVERY 125 HOURS ............................................................................................... 3.4 EVERY 250 HOURS ............................................................................................... 3.5 EVERY 500 HOURS: .............................................................................................. 3.5 EVERY 1000 HOURS ............................................................................................. 3.6 EVERY 2000 HOURS ............................................................................................. 3.6 EVERY 3000 HOURS ............................................................................................. 3.6 SERVICE AND LUBRICATION POINTS .................................................................... 3.8 SWING DRIVE GEARBOX LUBRICATION .............................................................. 3.10 TORQUE CHART, GENERAL ................................................................................... 3.25 TORQUE SETTINGS, RECOMMENDED ................................................................. 3.24 VACUUM PUMP (LATER DESIGN ONLY) ............................................................... 3.23

Tigercat T250 Loader

Lubrication and Maintenance

PREVENTIVE MAINTENANCE SCHEDULE FOR T250 LOADER NEW MACHINE MAINTENANCE

*INITIAL PRE-DELIVERY INSPECTION:PERFORM THE INITIAL PRE-DELIVERY INSPECTION USING Tigercat FORM NUMBERS 5281 AND 5282; "PDI AND 50-100 HOUR INSPECTION REPORT"

*FIRST 50-100 HOUR INSPECTION AND SERVICE REPORT:WITH THE OWNER'S MECHANIC PRESENT, PERFORM AN INSPECTION AND SERVICE ACCORDING TO THE Tigercat FORM NUMBERS 5281 AND 5282; "PDI AND 50-100 HOUR INSPECTION REPORT" THIS MUST BE COMPLETED WITHIN THE FIRST 50-100 HOUR TIME FRAME.

*IMPORTANT: TO QUALIFY FOR CONTINUED WARRANTY, THIS REPORT MUST BE COMPLETED AND RETURNED TO Tigercat Industries Inc. WARRANTY DEPARTMENT.

Tightening points:~

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

All hydraulic connections Hose clamps All cylinder and boom pin retainers

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

Boom pin nuts Check swing bearing bolt torque Engine mounting bolts Pump mounting bolts

IMPORTANT

Track shoe bolts Track roller retaining bolts

BEFORE DRIVING MACHINE ENSURE THAT THE TRACK TENSION (SAG) IS SET CORRECTLY.

Track sprocket retaining bolts

TRACK SAG MAY BE SET LESS THAN SPECIFIED FOR SHIPPING PURPOSES.

Track drive gearbox mounting bolts

REFER TO SECTION 11 IN THE SERVICE MANUAL FOR THIS PROCEDURE.

Track drive motor mounting bolts Swing gearbox mounting bolts

OIL LOST FROM LEAKAGE

Swing motor mounting bolts Cab securing bolts

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

Any other loose nut, bolt or fitting

3.2

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

Tigercat T250 Loader

Lubrication and Maintenance

GENERAL FIRE PREVENTION Maintaining your machine properly will greatly extend its life and reduce your operating costs.

CAUTION All handles, steps and platforms must be kept free of grease, oil, fuel mud, snow ice and forest debris to prevent risk of personal injury.

Fire can result in a machine loss which can be financially devastating.

CAUTION Clean around filler caps before checking or adding fluids.

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

Clean around hydraulic fittings before breaking connection. Plug or cap immediately.

Clean up spills as soon as possible.

Always release pressure in hydraulic tank Before breaking a connection.

1. Pine needles and bark when allowed to accumulate, form a fuel source that when Always use clean oil and containers. ignited is extremely difficult to extinguish. A Drain dirty oil while still warm. thorough program of regular cleaning and washing will reduce the possibility of a fire Do not exceed recommended fluid levels. starting. In the event a fire does start, the Service all hydraulic filters after the failure of a regular cleaning program will improve the pump, motor, cylinder or valve. Failures of chances of successfully extinguishing a fire. this nature could contaminate the entire 2. Pay close attention to wiring and plumbing hydraulic system. routings during maintenance, ensure that ALL Top up diesel fuel at each shift to reduce wiring harnesses or hydraulic hoses are contamination by condensation. properly restrained and clamped to prevent damage from chaffing.

Clean up oil spills on walking surfaces in engine enclosure immediately.

3. Read the fire suppression system manual and have the system serviced regularly by qualified personnel.

Before welding on machine, be sure the negative battery terminal is disconnected.

4. In case of fire lower the boom system to the ground and shut off the engine before discharging the fire suppression system.

Before welding on machine, disconnect the multi-pin plug from the engine anti-stall controller and the two engine CPU multi-pin plugs from the left side of the engine.

Also refer to the SAFETY section of this manual for additional information on how to prevent fires from starting on the machine.

When welding, secure ground connection as close to working position as possible to prevent arcing across machined surfaces or through bearings.

Clean away all branches, bark and chips.

Clean up all traces of oil to avoid fires.

Always have a fire extinguisher at hand.

For safety, always lower boom assembly to the ground when leaving cab, leaving machine unattended or during service.

Always install roof safety strut when working in engine compartment.

Clean fire suppression system sensors.

3.3

Tigercat T250 Loader

Lubrication and Maintenance

SCHEDULED MAINTENANCE • For loose nuts, bolts and fittings

EVERY 8 HOURS:~ • Check engine coolant level

• Condition and tension of engine belts

• Check engine oil level

• Visually inspect condition of track components

• Drain fuel/water separator

• Conduct an overall visual inspection.

• Clean air cleaner unloader valve. Refer to AIR CLEANER in SECTION 2 of the OPERATOR'S MANUAL.

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

• Check hydraulic oil level

EVERY 24 HOURS:~

Lubricate:~ • Swing bearing; 1-fitting - 4 shots while swinging

• Perform 8 hour maintenance And in addition:~ • Lubricate grapple rotate bearing; 1-fitting - 4 shots, rotate 90° after each shot

• Swing pinion; 1-fitting - 10 shots while swinging • *Boom joint; 2-fittings - purge

EVERY 125 HOURS:~

• *Stick joint; 2-fittings - purge

• Perform 8 hour maintenance

• *Cylinder pins; boom, stick & tilt; 4-fittings - purge

• Perform 24 hour maintenance

*Lubricating cylinder pins and boom joints:1. Ensure machine is on level ground 2. Fully extend stick boom cylinder

And in addition:~ • Check air cleaner filter restriction indicator at full engine RPM

3. Lower main boom and rest grapple firmly on ground or stable trailer

• Check return filter restriction gauge is in GREEN zone with engine running at high idle with oil flow and oil at operating temperature

4. While in this position lubricate all cylinder retaining pins and boom joints

• Check track gearboxes oil level with level plug at 9 O'clock and other plug at 6 O'clock.

NOTE: This procedure will allow grease to flow to the normally "loaded side" of the pin/bearing surfaces.

• Check fluid level in batteries unless maintenance free • Check engine rpm

• Yoke pins; 2-fittings - purge

• Check hydraulic pump and motor securing bolts

• Grapple rotate pinion; 1-fitting - 4 shots, rotate 90° after each shot

• Check torque tightening points as per new machine maintenance

• Grapple arm pins; 6-fittings - purge

• Carry out A/C system inspection; Refer to CHECKING THE AIR CONDITIONING SYSTEM in THIS SECTION

• Grapple cylinder pins; 4-fittings - purge

Visually check for damage to:~ • Main and stick booms

Clean:~ • Oil cooler, engine radiator and a/c condenser

• Tracks, track frames and carbody

• Remove potentially damaging limbs or sticks and all debris

• Swing bearing area

Check:~ • For leakage around hydraulic components and flexible hoses

Make repairs immediately

• Attachment

3.4

Tigercat T250 Loader

Lubrication and Maintenance

SCHEDULED MAINTENANCE Visually inspect for:~ • Frayed electrical wiring and hydraulic hoses

EVERY 500 HOURS:~ • Perform 8 hour maintenance

NOTE: Neglecting the proper maintenance of these items can result in fire.

• Perform 24 hour maintenance • Perform 125 hour maintenance

• Wear in any other components Clean/replace:~ • Air conditioner re-circulation filter • Cab fresh air filter

• Perform 250 hour maintenance And in addition:~ • Replace engine oil and filter§.

• Replace engine fuel filter§.

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

• Replace engine coolant filter§.

• Replace filter in remote mounted fuel filter/ water separator§ (all machines).

• Replace air cleaner safety element.

EVERY 250 HOURS:~

• Replace hydraulic oil pre-fill filter§. †

• Perform 8 hour maintenance

• Replace hydraulic oil return filters. †

• Perform 24 hour maintenance

• Replace hydraulic oil pilot pressure filter§. †

• Perform 125 hour maintenance

§ Refer to FILTERS - REMOVE AND REPLACE in THIS SECTION.

And in addition:~ • Check all hydraulic pressures • Lubricate swing drive gearbox lower bearing; 2 fitting - 5 shots.* Do not use power grease gun. *With swing gearbox at operating temperature slowly add 5 shots of lithium based EP2 to each side of the gearbox. Note: During cold weather the swing function must be operated for several hours to achieve operating temperature. Caution: Do not force grease, gearbox failure may result. Do not use winter grease. Grease should purge from gearbox pinion seal.

Lubricate:~ • Door and cover hinges; 8 fittings - 1 shot • Other door hinges; apply oil liberally Check:~ • Torque on swing bearing and swing gearbox retaining bolts.

• Torque on track drive gearboxes and motor mounting bolts.

• Check track rollers for leakage. Earlier rollers were filled with oil and later rollers filled with grease, both cases are considered to be maintenance free. If a lubricant leakage is detected the rollers must be removed, repaired and replaced.

• Check fire extinguisher and turn it to mix contents

• Check track idler assembly for leakage, the bearing is filled with oil and is considered to be maintenance free. If a lubricant leakage is detected the idler must be removed, repaired and replaced.

• Replace air cleaner primary element*.

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

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

3.5

Tigercat T250 Loader

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 1000 HOURS:~

EVERY 3000 HOURS:~

• Perform 8 hour maintenance

• Perform frequently maintenance

• Perform 24 hour maintenance

• Perform 8 hour maintenance

• Perform 125 hour maintenance

• Perform 24 hour maintenance

• Perform 250 hour maintenance

• Perform 125 hour maintenance

• Perform 500 hour maintenance

• Perform 250 hour maintenance • Perform 500 hour maintenance

And in addition:~ • Replace oil in track drive gearboxes with drain plug at 6 O'clock position and fill plug at 9 O'clock.

• Perform 1000 hour maintenance • Perform 2000 hour maintenance And in addition:~

• Check in-tank fuel strainer. Drain tank, clean or replace as necessary.

• Clean/replace filter element in fitting at P1. port on main pump anti-stall valve. (Main pump AP011 (160cc) only)

• Replace air cleaner unloader valve.

EVERY 2000 HOURS:~ • Perform 8 hour maintenance • Perform 24 hour maintenance • Perform 125 hour maintenance • Perform 250 hour maintenance • Perform 500 hour maintenance • Perform 1000 hour maintenance And in addition:~ • Replace turbocharger rubber inlet coupling, High temperatures in this area can cause the rubber to harden. See AIR INTAKE MAINTENANCE in THIS SECTION • Check ALL air intake tubing, rubber couplings and band clamps for signs of wear and leakage • Drain and refill hydraulic oil tank with recommended hydraulic oil. See APPROVED HYDRAULIC OILS in THIS SECTION It is strongly recommended that a program of regular oil testing be used. Oil change intervals can be established from oil test results

3.6

Tigercat T250 Loader

Lubrication and Maintenance

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

Chevron

Mechanism LPS 68 (summer)

Citgo

Mystik HVI-68 (summer)

Imperial/ESSO Univis N68 (summer) Univis N22 (winter) Shell

Tellus T68 (summer) Tellus T22 (winter)

Texaco

Rando HDZ 68 (summer)

3.7

Tigercat T250 Loader

Lubrication and Maintenance

SWING BEARING 1 FTG/8

14

DOOR HINGES 2 FTG/500

6

4 SHOTS WHILE SWINGING

5 1 2

SWING PINION 1 FTG/8

4 3

10 SHOTS WHILE SWINGING

7 8

DOOR HINGES 2 FTG/500

SWING GEARBOX LOWER BEARING 2 FTG/250

9

5 SHOTS EACH FITTING (FITTINGS LOCATED UNDER BOOM)

12

10

STICK JOINT 2 FTG/8

10

BOOM JOINT 2 FTG/8

DOOR HINGES 4 FTG/500

YOKE PINS 2 FTG/8

CYLINDER PINS 4 FTG/8 GRAPPLE ROTATE BEARING 1 FTG/24 4 SHOTS ROTATE 90˚ AFTER EACH SHOT

13

GRAPPLE ROTATE PINION 1 FTG/8 4 SHOTS ROTATE 90˚ AFTER EACH SHOT

GRAPPLE ARM PINS 6 FTG/8 CYLINDER PINS 4 FTG/8

16

14025B.AI.R1

3.8

11

15

Tigercat T250 Loader

Lubrication and Maintenance

Tigercat® T250 Loader On Tracks SERVICE AND LUBRICATION POINTS REFER TO Tigercat OPERATOR’S MANUAL FOR ADDITIONAL INFORMATION ®

CHANGE COOLANT EVERY 2 YEARS

34

9

24

6.3

60% ANTIFREEZE ** 40% DISTILLEDWATER

1

COOLING SYSTEM

CHK

2

ENGINE OIL AND FILTER CUMMINS 'C'

CHK

3

FUEL FILTER (ENGINE)

REP

4

ENGINE COOLANT FILTER

REP

1

5

FUEL/WATER SEPARATOR

REP

1

6

INTANK FUEL STRAINER

REP

DRN

1

1

CHK REP

1

7 AIR CLEANER SAFETY ELEMENT

REP

8

AIR CLEANER UNLOADER VALVE

CHK

9

HYDRAULIC TANK

CHK

10

RETURN FILTERS † (4 ELEMENTS)

11

PRESSURE FILTER, PILOT †

12

MAIN PUMP PILOT FILTER SCREEN

13

1

1

DRAIN AND REFILL AS REQ'D BY SEASONAL OIL CHANGE. REFER TO APPROVED HYD. OILS

REP

4

CHECK FILTER RESTRICTION INDICATOR, ON HYDRAULIC OIL RETURN MANIFOLD, WITH ENGINE RUNNING AT HIGH IDLE WITH OIL FLOW

REP

1

D/R

15

TRACK DRIVE GEARBOX

16

TRACK ROLLERS & IDLERS

350

92

REP

1

FILTER SCREEN LOCATED IN FITTING AT 'P1' PORT CONNECTION ON CONTROL VALVE ON MAIN PUMP

SEE LUBRICATION POINTS DIAGRAM SEE MANUFACTURER'S MAINTENANCE SCHEDULE

GRAPPLE, OTHER MANUFACTURERS FIRE EXTINGUISHER

CHECK AIR CLEANER FILTER RESTRICTION INDICATOR AT FULL ENGINE RPM REFER TO OPERATOR'S MANUAL SECTION 2 FOR DETAILS

GRAPPLE, Tigercat

14

DRAIN TANK, CLEAN OR REPLACE AS NECESSARY

1

REP

CHK

SEE ENGINE MANUFACTURER'S SERVICE MANUAL

1

CHK

AIR CLEANER PRIMARY ELEMENT

DESCRIPTION

QTY

US GAL

3000

2000

1000

500

250

125

8

SERVICE POINT NO.

ITEM

LITER

CAPACITY

SERVICE EVERY

CHK

CHK

D/R

CHK

1

TURN TO MIX CONTENTS

6

1.5

2

CHECK IN HORIZONTAL POSITION FILL WITH SAE 75W90 SYNTHETIC GEAR OIL

7.6

2

1

CHECK FOR OIL LEAKAGE. FILL WITH SAE 30 OR 40 IF REQ'D

LEGEND 2 FTG/125

LUBRICATION POINT WITH A DESIGNATED NUMBER OF FITTINGS (2 FTG) AND HOURS BETWEEN SERVICING (125 ). EXCEPT WHERE SPECIFIED, PURGE WITH LITHIUM BASED EP2 GREASE CONTAINING MOLYBDENUM DISULFIDE "MOLY". ** ANTIFREEZE MUST MEET GM 6038M SPECIFICATIONS - SEE ENGINE MANUFACTURER'S MAINTENANCE MANUAL. *** DO NOT USE A POWER GREASER. REFER TO SCHEDULED MAINTENANCE: EVERY 250 HOURS IN SECTION 3 OF THE MANUAL FOR DETAILED INSTRUCTIONS. INCORRECT LUBRICATION MAY RESULT IN GEARBOX FAILURE.

† Use of filters other than genuine Tigercat replacement filters is not recommended T250LUBCHART.XLS

3.9

…….. HOURS CHK …. CHECK REP …. REPLACE DRN …. DRAIN D/R ….. DRAIN & REFILL

Tigercat T250 Loader LUBRICATION OF SWING DRIVE GEARBOX

Lubrication and Maintenance

UPPER GEARING LUBRICATION The swing gearbox upper gearing is lubricated by hydraulic oil which flows from one of two return ports on the auxiliary valve into the swing brake 'U' port on the swing drive gearbox. A 1/16 inch orifice/connector installed in the 'U' port regulates the flow of oil through the gearbox at approximately 1 GPM. Oil is returned to tank via flushing port 'T'.

ALTERNATE BRAKE RELEASE PORT 'Z' (PLUGGED)

STEEL DISC FLUSHING PORT 'T'

FRICTION DISC

FLUSHING PORT 'U'

• •

• •

•

CONNECTOR/ ORIFICE 0.062" DIA

•

• BRAKE RELEASE PORT 'Y'

BK005-8

CROSS SECTION OF SWING BRAKE 2-GREASE FITTINGS FOR LOWER BEARING LUBRICATION

• • BELOW MAIN BOOM ON UPPER FRAME

381-3A LOWER BEARING LUBRICATION LOWER BEARING LUBRICATION The cavity in the lower portion of the gearbox where the two lower bearings are housed is completely filled with grease.

Using a hand grease gun, pump 5 shots of grease into each grease fitting located at the front of the upper frame below the main boom mount. Follow the lubricating procedure on the label located beside the grease fittings and also refer to SCHEDULED MAINTENANCE - 250 HOURS in THIS SECTION. For additional information refer to SECTION 15 in the SERVICE MANUAL.

3.10

Tigercat T250 Loader CHECKING THE AIR CONDITIONING SYSTEM

Lubrication and Maintenance 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.

Any service work must be performed by a certified A/C technician. The system should be charged with R134a refrigerant only. PAG (polyalkylene glycol) oil should be present in the system and must be used on 'O' rings and fittings during assembly.

CAUTION

A/C SYSTEM TOTAL CAPACITIES PAG OIL R134a REFRIGERANT (polyalkylene glycol) 2 LBS. 12 OZ.

If using water or compressed air for cleaning, use at 30 psi. or less. Always use personal protective equipment to guard against flying debris.

2 OZ.

The compressor and charge valves are accessed on the right side of the engine. The receiver dryer is mounted to the outside back of the cab.

Perform following inspection along with 125 HOURS inspection outlined in SCHEDULED MAINTENANCE in THIS SECTION.

i.

Check to see that compressor clutch will engage.*

j.

Inspect sight glass on receiver dryer with A/C ON. A constant stream of bubbles indicates system requires charging.* SIGHT GLASS INDICATES CONDITION OF CHARGE

a. Check re-circulating and fresh air filters in operator's cab. Refer to SECTION 2 of the OPERATOR'S MANUAL.

•• ••

CHECK A/C CONDENSER CORE

BINARY SWITCH, SYSTEM PROTECTION

• •• MOISTURE INDICATOR BLUE - OK. PINK - REPLACE DRYER, RECHARGE SYSTEM

• • UPPER FRAME

A/C RECEIVER/DRYER 206-6A

CHECK A/C CONDENSER CORE

b. Check the condenser core for dirt and debris.

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

A/C RECEIVER/DRYER Check colour in moisture indicator; BLUE is OK. PINK indicates desiccant material in dryer is saturated with moisture. In this situation replace receiver/dryer, evacuate system and recharge system with both refrigerant and PAG oil.*

870-D43

c. Check for dirt and debris; on the evaporator coil located inside the A/C-heater unit and also the inside of the A/C-heater unit. Clean as required. d. Check and adjust compressor drive belt tension.

* Indicates that these repairs must only be carried out by a certified A/C technician.

e. Check all A/C hoses for kinks.* f.

Run air conditioning system for 3 - 5 minutes.

g. Check air temperature exiting vents in cab. h. Listen to compressor and blower motor for abnormal noises.*

For additional SERVICE information refer to the Tigercat A/C SERVICE MANUAL part number 18795A, available from Tigercat parts department.

3.11

Tigercat T250 Loader

Lubrication and Maintenance ENGINE FILTERS

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

Refer to the appropriate engine manufacturers operation and maintenance manual for correct procedures and time intervals when servicing the engine coolant, oil and fuel filters. Read and understand the SAFETY section in each of these manuals.

FUEL FILTER/WATER SEPARATOR, REMOTE MOUNTED

IMPORTANT Refer to the appropriate engine manufacturers operation and maintenance manual for correct procedures and time intervals when servicing the engine coolant, oil and fuel filters.

ENGINE OIL FILTER

1" INNER GASKET & OUTER GASKET

SHUT-OFF VALVES, ENGINE COOLANT FILTER

••

CLOSE BOTH VALVES WHEN REMOVING FILTER. OPEN BOTH VALVES AFTER INSTALLING NEW FILTER ELEMENT.

••

FILTER ELEMENT INCLUDES 3-GASKETS

WATER SEPARATOR BOWL

•• ••

WATER BOWL GASKET

• ENGINE COOLANT FILTER, CORROSION RESISTOR CARTRIDGE

870-D19

ENGINE OIL AND COOLANT FILTERS FUEL FILTER/WATER SEPARATOR ELEMENT

••

•• FUEL FILTER ELEMENT

T250-D01

WATER/SEDIMENT DRAIN VALVE

••

ENGINE FUEL FILTER/WATER SEPARATOR Cummins 6CTAA8.3 engine filters shown above.

CAUTION When changing coolant filter, wait until engine coolant temperature is below 50°C (122°F) before removing radiator cap.

FUEL LINE WATER SEPARATOR (REMOTE MOUNTED)

DRAIN TAP

• •

383-18

The fuel filter/water separator is a combination unit, with a replaceable fuel filter and a removable water sediment bowl on the bottom of the unit. The water sediment bowl is only replaced if it becomes damaged or non-functional. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. Changing the filter: 1. Park machine on level ground with felling head resting on the ground.

2. Stop engine. Turn battery disconnect switch to the OFF position.

3. Remove engine front access panel.

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

5. Place a suitable container below to catch the spilt fuel.

6. Wearing face protection (in case of a fuel squirt) and unscrew the old filter.

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

3.12

Tigercat T250 Loader

Lubrication and Maintenance

8. Remove the water sediment bowl from the bottom of the old filter. Discard this gasket also. Dispose of old filter and any fuel properly.

9. Clean the water sediment bowl.

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

11. 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.

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

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

14. 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.

15. If fuel priming is necessary, refer to the appropriate engine manufacturers maintenance manual.

16. Start the engine and check for leaks.

3.13

Tigercat T250 Loader

Lubrication and Maintenance Changing the filters:

RETURN MANIFOLD

DOUBLE FILTER HEADS

1. Ensure Loader is on firm level ground. Lower grapple to ground and stop engine.

••

•

2. Turn battery disconnect switch OFF. 3. Release air from hydraulic tank by opening the air vent ball valve.

••

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

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

•

• 1-WATER ABSORBING RETURN FILTER (COLOUR BLUE) 358-17

••

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

••

7. 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.

3-HYDRAULIC RETURN FILTERS

HYDRAULIC RETURN FILTERS

HYDRAULIC OIL RETURN FILTERS The majority of return oil entering the hydraulic tank passes through 4 spin-on hydraulic oil filters. One of the filters is a water absorbing filter (color blue) which is in place to assist with the removal of unwanted moisture from the hydraulic oil (the filters are rated 10m abs).

Each filter head has a bypass valve with a 25 psi cracking pressure so that oil can bypass the filters if they become restricted. The "in" side of the filter heads are connected to a return manifold. A filter restriction indicator and an oil sampling connector are mounted onto the manifold. To check the condition of the filter elements; With the hydraulic oil at normal operating temperature, place engine throttle control to FULL and with no machine functions operating, the filter restriction indicator should be in the GREEN zone. If the pointer is in the RED zone replace all four filter elements.

3.14

Tigercat T250 Loader

Lubrication and Maintenance •

FILTER HEAD

HYDRAULIC FILTER SERVICING GUIDELINES

• GASKET

•

IMPORTANT

FILTER ELEMENT

NEVER PRE-FILL ANY HYDRAULIC FILTERS ON 200, 700, 800 AND 1000 SERIES MACHINES NEVER PRE-FILL CHARGE PRESSURE FILTERS ON 600 SERIES SKIDDERS

SQUARE SECTION GASKET INSTALLATION FILTR_SEALS 2

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.

Do not prefill filter *. Screw on new filter until gasket makes contact with filter head.

Tighten filter an additional 3/4 turn.

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

Unfiltered oil used to pre-fill filters enters directly into the hydraulic circuit. Contaminants in unfiltered oil can cause significant and costly damage to hydraulic valves, pumps and motors.

The cleanliness of hydraulic oil cannot be guaranteed unless it is always prefiltered before use.

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

FILTER HEAD

• •

ALWAYS PRE-FILL DUAL HEAD HYDRAULIC FILTERS ON 600 SERIES SKIDDERS

GASKET

•

FILTER ELEMENT

Dual head hydraulic filters on 600 series skidders must always be pre-filled with clean oil as noted specifically in the manuals for each of these machines.

'O' RING GASKET INSTALLATION 'O' Ring Gasket

FILTR_SEALS 2

z

Remove used gasket and clean gasket seat in head.

Apply clean oil to new gasket surfaces.

All 600 series hydraulic circuits direct oil from the dual head filters to the main and drive pump inlets. Air must not be allowed to enter the inlets of these pumps. Entry of air directly into pump inlets can cause significant and costly damage to pumps. In this particular case the risk of damage to pumps caused by entry of air into the circuit is considered to be greater than the risk of damage caused by unfiltered oil. Prefiltering of any hydraulic oil used to pre-fill these filters is strongly recommended to eliminate the risk of damage caused by unfiltered oil.

Install new gasket on inside lip of filter.

Do not prefill filter *. Screw on new filter until gasket makes contact with filter head.

Tighten filter an additional 3/4 turn.

Tighten filter until top edge makes metal to metal contact with filter head. (approximately 1 1/2 additional turns after gasket contact) DO NOT use bottom nut for filter installation or damage/leakage may result. Bottom nut is to assist in filter removal only.

8. Close air vent ball valve.

9. Start the engine and check for leaks. *Refer to HYDRAULIC FILTER SERVICING GUIDELINES on PREVIOUS PAGE. 3.15

Tigercat T250 Loader

Lubrication and Maintenance 10. Turn filter an additional 1/2 turn by hand to tighten.

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

9. Start the engine and check for leaks. *Refer to HYDRAULIC FILTER SERVICING GUIDELINES on PREVIOUS PAGE.

••

PILOT FILTER ELEMENT

LOCATED LOWER LEFT SIDE OF ENGINE COMPARTMENT

383-11

HYDRAULIC PILOT FILTER

PILOT RETURN PRESSURE FILTER This single full flow filter, is mounted in the output line between the pilot pump and the pilot manifold.

For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. Changing the filter: 1. Ensure Loader is on firm level ground. Lower grapple to ground and stop engine.

2. Turn battery disconnect switch OFF. 3. Release air from hydraulic tank by opening the air vent ball valve.

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

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

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

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

8. The new filter has an attached gasket, apply hydraulic oil to the gasket surface.

9. Do not prefill filter *. Screw on new filter until gasket makes contact with filter head.

3.16

Tigercat T250 Loader

Lubrication and Maintenance

3.17

Tigercat T250 Loader AIR INTAKE MAINTENANCE

Lubrication and Maintenance

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

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

In addition to the LUBRICATION AND MAINTENANCE SCHEDULE, the following instructions should also be noted.

The most common and most damaging air intake servicing problems are:

AIR CLEANER UNLOADER VALVE

OVER SERVICING Filter elements increase in dust cleaning efficiency as dust builds up on the media.

Looks can be deceiving. A filter that is dirty is actually more efficient than one that is clean. A filter with dust build up on the media reaches nearly 100% dust cleaning efficiency. Only when a filter is so clogged with dirt that air restriction goes beyond the engine manufacturer’s guidelines, should be replaced.

382-12A

••

AIR CLEANER

IMPROPER SERVICING Engine exposure to dust during servicing is the largest single factor contributing to engine damage due to dust. Abrasive dust can easily enter the intake system once the air cleaner element has been removed for replacement.

The safety element reduces the risk, however it must also be replaced at every third primary element change.

205-19AC

AIR CLEANER PRIMARY ELEMENT

IMPORTANT STEPS TO FOLLOW 1. Release the seal gently to reduce the amount of dust dislodged.

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

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

205-22AC

AIR CLEANER SAFETY ELEMENT

8. Check connection and ducts for air tight fit.

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

4. Always clean the inside of the outlet tube.

5. Check the old filter, it can help you detect foreign material on the sealing surface that may be causing leakage.

6. Inspect the new filter for damage.

7. Insert the new filter properly. Apply pressure to the outer rim of the filter, not the flexible center.

3.18

Tigercat T250 Loader

Lubrication and Maintenance

AIR CLEANER UNLOADER VALVE

AIR INTAKE TUBING

This rubber valve on the tube of the air cleaner housing should be checked at the beginning of every shift. (8 hours) If this valve is missing, damaged or has become hard, it will cause the air cleaner to become ineffective. The unloader valve should be replaced every 1000 hours.

RUBBER TURBO INLET CHARGER JOINT

Remove the unloader valve from the tube of the air cleaner housing.

Check and clean the valve. A good valve should be soft and flexible. If it is plugged, then check the filter elements, they may need replacing. Re-attach the valve to the tube.

The valve should suck closed at about 1/3 of full throttle.

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

•

• 250-04

••

FILTER RESTRICTION INDICATOR

INTAKE TUBING AND JOINTS Replace turbocharger rubber inlet coupling - High temperatures in this area can cause the rubber to harden.

Check ALL air intake tubing, rubber couplings and band clamps for signs of wear and leakage.

See SCHEDULED MAINTENANCE in THIS SECTION.

RESET BUTTON

• FILTER RESTRICTION INDICATOR

240B-D26

••

••

FILTER RESTRICTION INDICATOR

FILTER RESTRICTION INDICATOR A filter restriction indicator is located in the engine enclosure beside the air intake grill.

The indicator is remote mounted and is connected to the outlet side of the air filter with a 1/4" diameter hose. Service to the filter is required when the indicator shows RED. This indicator provides a continuous reading whether the engine is running or is shut down.

After servicing the filter, reset the indicator by pressing down on the reset button.

3.19

Tigercat T250 Loader SERVICING HYDRAULIC PRESSURIZATION SYSTEM, ENGINE TURBO AIR (EARLIER DESIGN)

Lubrication and Maintenance SET HYDRAULIC TANK REGULATOR BEFORE SETTING TANK PRESSURE 1. If a new pressure gauge has been installed excess air that may be trapped in the gauge must be relieved. With the gauge in an upright position momentarily remove the rubber nipple on top of the gauge and insert back into place.

Do not cut the rubber nipple off as is indicated on the new replacement gauge.

REGULATED PRESSURE LINE TO TANK

REGULATOR

•

PRESSURE GAUGE

•

2. Ensure hydraulic fluid level is within specified limits. Overfilling the tank can cause hydraulic fluid to flow into the regulator disabling the unit.

•

3. To ensure that tank pressure is not influenced by any remaining air still circulating through the hydraulic lines allow the entrained air to escape from the hydraulic system. This can take up to one or two days.

LOCATION: INSIDE REAR ACCESS DOOR 381-15A

VENT FILTER AND RELIEF VALVE

• •

SET UP PROCEDURE 1. Start the engine and set the throttle control to FULL. This should provide a no load boost pressure of approximately 10 psi from the turbo manifold.

• ••

AIR VENT BALL VALVE

HYDRAULIC TANK

2. Close the air vent ball valve. Turn the regulator adjusting handle in completely. If tank pressure exceeds 12 psi replace the relief valve.

LOCATION: INSIDE FRONT ACCESS PANEL

383-4

3. Relieve all pressure from the tank by opening the ball valve.

HYDRAULIC TANK PRESSURIZATION SYSTEM BY ENGINE TURBO AIR (EARLIER DESIGN)

4. Turn the regulator adjusting handle out until it starts to turn freely.

Refer also to HYDRAULIC PRESSURIZATION SYSTEM (EARLIER DESIGN) in SECTION 2 of the OPERATOR'S MANUAL for more information on the system and its operation.

PRESSURE GAUGE

RUBBER NIPPLE

•

HYDRAULIC TANK

•

•

REGULATOR ADJUSTING HANDLE

•

•

• •

AIR FILTER

• LOCKING NUT

RELIEF VALVE

•

BALL VALVE, AIR VENT

REGULATOR

TURBO AIR FROM ENGINE 845-41

REGULATOR SET-UP PROCEDURE (EARLIER DESIGN ONLY) 3.20

Tigercat T250 Loader

Lubrication and Maintenance

5. Close the ball valve.

6. Slowly turn the regulator adjusting handle IN, allowing the gauge reading to settle between turns until reading a of 3 to 3.5 psi is obtained.

Lock the regulator adjusting handle in place by tightening the locking nut.

7. If tank pressure exceeds 3.5 psi open the ball valve and repeat steps 4 to 7.

8. Turn the engine OFF. 9. Watch the tank pressure gauge for several minutes for any indications of a loss in system pressure.

10. If tank pressure falls check all fittings and connections for leaks. All NPT connectors must be fastened using pipe sealant to prevent leakage. A properly installed system should be capable of maintaining constant pressure over night.

NOTE: The tank pressure can decrease without substantial leaks due to the contraction of air within the hydraulic tank. This may occur when the air and oil temperature within the tank decreases.

If gauge motion seems erratic and is difficult to adjust there may be air remaining in the hydraulic lines. Sufficient time must be allowed for the entrained air to escape from the system before the regulator can be accurately set.

IMPORTANT When servicing the hydraulic system, always de-pressurize the hydraulic tank by opening the air vent ball valve .

Do not attempt to START the engine unless the hydraulic tank has been pressurized.

Refer to HYDRAULIC PRESSURIZATION SYSTEM (EARLY DESIGN) in SECTION 2 of the OPERATOR'S MANUAL

3.21

Tigercat T250 Loader SERVICING HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN)

Lubrication and Maintenance RELIEF VALVE

PRESSURE GAUGE AIR VENT BALL VALVE

Refer also to HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN) in SECTION 2 of the OPERATOR'S MANUAL for more information on this system and its operation.

SET HYDRAULIC TANK RELIEF VALVE WITH AIR COMPRESSOR CHARGING SYSTEM

2. Momentarily remove the rubber nipple on top of the pressure gauge to release any trapped air and insert back into place. Do not cut the rubber nipple off as indicated on the gauge.

The gauge should now read 0 psi.

••

•

VENT FILTER

1. Open the air vent ball valve to vent air from the tank.

•

••

•• PUMP SWITCH

HYDRAULIC TANK

•• AIR COMPRESSOR/ VACUUM PUMP

•• 250-P05

HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN)

AIR COMPRESSOR/VACUUM SOLENOID VALVE

3. Close air vent ball valve and turn relief valve adjustment fully IN.

••

4. Use the hand fill pump to pressurize the hydraulic tank. OPEN oil fill shut-off valve, remove hose clamp from end of suction hose, remove hose from stored position and operate hand pump until a gauge reading of 11-12 psi is obtained. CLOSE oil fill shut-off valve, place hose in stored position and secure with the hose clamp.

VENT FILTER

AIR COMPRESSOR/ VACUUM PUMP

••

•

5. Slowly turn the relief valve OUT until the pressure gauge reading drops to 10 psi.

Tighten the relief valve locking nut.

250-04

6. Watch the tank pressure gauge for several minutes for any indications of a loss in system pressure.

RELIEF VALVE

7. If tank pressure falls check all fittings and connections for leaks. All NPT connectors must be fastened using pipe sealant to prevent leakage. A properly installed system should be capable of maintaining constant pressure over night.

NOTE: The tank pressure can decrease without substantial leaks due to the contraction of air within the hydraulic tank. This may occur when the air and oil temperature within the tank decreases.

PRESSURE GAUGE

AIR COMPRESSOR/ VACUUM PUMP

AIR VENT BALL VALVE

•• •

•• VENT FILTER

•• ••

250-05

3.22

HYDRAULIC PRESSURIZATION SYSTEM (LATER DESIGN/LATER MACHINES)

Tigercat T250 Loader VACUUM PUMP (LATER MACHINES) Later machines are equipped with a vacuum pump to "hold" the oil in the hydraulic tank when work is being done on the hydraulic system. This eliminates the need to drain the hydraulic reservoir before servicing pumps and other hydraulic components. The air compressor used for hydraulic reservoir pressurization also acts as a vacuum pump for this purpose.

Lubrication and Maintenance 5. Turn the vacuum pump switch OFF. 6. Relieve the vacuum in the hydraulic tank by OPENING and CLOSING the air vent ball valve.

IMPORTANT It is recommended that the start key be removed while servicing the hydraulic system.

Do not attempt to START the machine or turn key to the RUN position. The vacuum pump only operates when the key switch is in the OFF position.

SERVICE NOTE: Before doing any work on the hydraulic system follow the steps below: 1. Turn the start key to the OFF position and remove the key. NOTE: The key switch must be in the OFF position to provide electrical power to the vacuum pump circuit and maintain a constant vacuum.

Do not leave machine unattended or overnight with vacuum pump on.

IMPORTANT REMOVE KEY FROM KEY SWITCH

Do not attempt to START the engine unless the hydraulic tank has been pressurized.

Refer to HYDRAULIC PRESSURIZATION SYSTEM (EARLY DESIGN) in SECTION 2 of the OPERATOR'S MANUAL

•• 250-P02

When servicing the hydraulic system, always de-pressurize the hydraulic tank by opening the air vent ball valve .

REMOVE KEY

2. Relieve any pressure in the hydraulic tank by OPENING and CLOSING the air vent ball valve.

VACUUM TANK SWITCH

•

T250-D13

VACUUM TANK SWITCH

3. Turn the vacuum pump switch ON. NOTE: The vacuum pump will start and stop as required to maintain a constant vacuum.

4. Perform all required work on the hydraulic system.

3.23

Tigercat T250 Loader

Lubrication and Maintenance

TORQUE CHART LOCATION

Cylinders Hoist, Piston nut Hoist, Keeper plate bolts Stick, Piston nut Stick, Keeper plate bolts Heel, Piston nut Heel, Keeper plate bolts Grapple, Piston nut Grapple, Gland Cab Tilt, Piston nut Cab Tilt, Gland Boom joint and cylinder pin retaining bolts Main and Stick boom pin retaining nut Heel to Stick boom pin retaining nut Cab securing bolts Swing bearing bolts Swing bearing bolts, Track machine Swing gearbox mounting bolts Swing motor mounting bolts Engine mounting Bolts, bracket/mount to chassis Bolts, bracket to engine Flex drive coupling hub setscrew Engine cooling fan mounting bolts Pump drive Drive plate to flywheel Bell housing to engine Under carriage Track shoe bolts (D6) Roller mounting bolts Sprocket bolts Gearbox mounting bolts Drive motor mounting bolts

THREAD DIAMETER

TORQUE (LUBRICATED) lbf-ft Nm

2 1/2"-12 UNF (GC) 3/4"-16 UNF (G8) 2 1/2"-12 UNF (GC) 3/4"-16 UNF (G8) 2" -12 UNF (GC) 3/4"-10 UNC (G8) 1 3/4"-12 UNF (GC) 1/2"-13 UNC (G8) 1 1/4" UNF (GC) -

3200 315-347 3200 315-347 2250 315-347 1750 80-88 930 450

4320 427-470 4320 427-470 3050 427-470 2355 109-119 1260 610

3/4"-10 UNC (G8)

282-310

393-420

2"-12 UNF (G8)

400

540

1 3/4"-12 UNF (G8)

400

540

7/8"-9 UNC (G8)

450-500

610-680

7/8"-9 UNC (Cat bolts) 7/8"-9 UNC (Cat bolts) 5/8"-11 UNC (G8) M16 (10.9)

450-500 450-500 160-175 200

610-680 610-680 215-235 275

7/8"-9 UNC (G8) M12-1.75 (10.9) M10 (12.9)

450-500 75 90 40

610-680 100 122 54

3/8"-16 UNC (G8) M10 (10.9)

33-36 47

45-49 63

3/4" UNC (Special) 7/8"-9 UNC (G8) M20 (10.9) M20 (10.9) M12 (10.9) M20 (10.9)

T/T 450 380 380 95 380

**

**

T/T 610 515 515 130 515

**T/T represents Torque -turn, this is a method of torquing the track shoe bolts which is fully described in SECTION 11 of the Tigercat SERVICE MANUAL.

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

3.24

Tigercat T250 Loader

Lubrication and Maintenance

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

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

IMPERIAL

GRADE 5 BOLTS

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

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

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

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

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

METRIC

SIZE

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

M6 M8 M10

4.8 12 23

3.5 8.5 17

6 15 29

4.5 11 21

9 22 43

6.5 16 32

11 28 55

8.5 20 40

13 32 63

9.5 24 47

17 40 80

12 30 60

15 37 75

11.5 28 55

19 47 95

14.5 35 70

M12 M14 M16

40 63 100

29 47 73

50 80 125

37 60 92

75 120 190

55 88 140

95 150 240

70 110 175

110 175 275

80 130 200

140 225 350

105 165 225

130 205 320

95 150 240

165 260 400

120 190 300

M18 M20 M22

135 190 260

100 140 190

175 240 330

125 180 250

260 375 510

195 275 375

330 475 650

250 350 475

375 530 725

275 400 540

475 675 925

350 500 675

440 625 850

325 460 625

560 800 1075

410 580 800

M24 M27 M30

330 490 675

250 360 490

425 625 850

310 450 625

650 950 1300

475 700 950

825 1200 1650

600 875 1200

925 1350 1850

675 100 1350

1150 1700 2300

850 1250 1700

1075 1600 2150

800 1150 1600

1350 2000 2700

1000 1500 2000

M33 M36

900 1150

675 850

1150 1450

850 1075

1750 2250

1300 1650

2200 2850

1650 2100

2500 3200

1850 2350

3150 4050

2350 3000

2900 3750

2150 2750

3700 4750

2750 3500

ISSUE 3 800

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

3.25

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

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

Tigercat T250 Loader

Lubrication and Maintenance

PRESSURE SETTINGS, Machine serial numbers 250T0111 to 250T0115 ENGINE RPM WITH CUMMINS 6CT8.3-C (215 HP @ 2200 RPM) FULL THROTTLE, NO LOAD, MAX .................................... 2400 RPM IDLE, NO LOAD ..................................................................... 950 RPM RATED WORKING .............................................................. 2200 RPM L.H. FINAL DRIVE CROSSLINE RELIEFS .......................................................... 4700 PSI (CRACKING PRESSURE) BEGIN OF REGULATION ..................................................... 3100 PSI BRAKE RELEASE ................................................................... 500 PSI SPEED: LOW .................................................................... 14.5 RPM (TRACK DRIVE SPROCKET) DRIVE .................................................................... 28 RPM (TRACK DRIVE SPROCKET) R.H. FINAL DRIVE CROSSLINE RELIEFS ........................................................... 4700 PS (CRACKING PRESSURE) BEGIN OF REGULATION ..................................................... 3100 PSI BRAKE RELEASE ................................................................... 500 PSI SPEED: LOW .................................................................... 14.5 RPM (TRACK DRIVE SPROCKET) DRIVE .................................................................... 28 RPM (TRACK DRIVE SPROCKET) MAIN PUMP (LINDE) START OF ANTI-STALL OUTPUT (MODULE AX159) .............. 2100 RPM MAIN VALVE (LINDE) HIGH PRESSURE LIMITING CONTROL MAIN RELIEF ........................................................................................ NONE ADJUSTABLE LOAD SENSE RELIEF P1 .................................................................... SCREW IN FULLY (LOCKED OUT) LOAD SENSE RELIEF P2 (AT ‘P’ PORT) ............................ 4500 PSI @ FULL THROTTLE MARGIN PRESSURE (‘P’ TO ‘LS’ DIFFERENCE) ............. ¶ 300 PSI @ FULL THROTTLE MAIN VALVE PORT RELIEFS LEFT TRACK FORWARD AND REVERSE SPOOL SECTION ........... NO PORT RELIEF PORT RELIEF HEEL IN (OPTION) ..................................... *4900 PSI @ 1200 RPM PORT RELIEF HEEL OUT (OPTION) ................................. *4900 PSI @ 1200 RPM PORT RELIEF GRAPPLE SAW (OPTION) ....................... ***3600 PSI @ FULL THROTTLE or DELIMBER OPEN ..................................... ***2500 PSI @ FULL THROTTLE PORT RELIEF SLASHER CUT ...................................... § ***2700 PSI @ FULL THROTTLE PORT RELIEF STICK IN ..................................................... *4900 PSI @ 1200 RPM PORT RELIEF STICK OUT ................................................. *4900 PSI @ 1200 RPM RIGHT TRACK FORWARD AND REVERSE SPOOL SECTION ......... NO PORT RELIEF PORT RELIEF HOIST DOWN ............................................. *4900 PSI @ 1200 RPM PORT RELIEF HOIST UP .................................................... *4900 PSI @ 1200 RPM SWING SPOOL SECTION ................................................................... NO PORT RELIEF PILOT SUPPLY MAIN RELIEF ............................................................................... 425 PSI @ FULL THROTTLE SWING MOTOR CROSSLINE RELIEFS ............................................................ ***3600 PSI @ FULL THROTTLE AUXILLIARY PUMP COMPENSATOR POR ............................................................. **2900 PSI @ FULL THROTTLE COMPENSATOR STANDBY VALVE .......................................................... SCREW IN FULLY (LOCKED OUT) MINIMUM DISPLACEMENT ....................................................................... DO NOT ADJUST MAXIMUM DISPLACEMENT ...................................................................... TURN ADJUSTING SCREW IN UNTIL IT JUST TOUCHES THE SWASHPLATE, THEN TURN IN 1/2 TURN MORE. AUXILLIARY VALVE MAIN RELIEF AUXILLIARY VALVE ....................................... 3300 PSI @ IDLE PORT RELIEF GRAPPLE ROTATE CCW .......................... †1750 PSI @ FULL THROTTLE PORT RELIEF GRAPPLE ROTATE CW ............................. †1750 PSI @ FULL THROTTLE PORT RELIEF SLASHER CUT .......................................... § 2500 PSI @ FULL THROTTLE PORT RELIEF SAW RETRACT ............................................ 1500 PSI @ FULL THROTTLE PORT RELIEF GRAPPLE OPEN .......................................... 3500 PSI @ IDLE PORT RELIEF GRAPPLE CLOSE ........................................ 3500 PSI @ IDLE CAB TILT VALVE MAIN RELIEF ......................................................................... 2000 PSI @ IDLE

ALL PRESSURES MUST BE SET WITH HYDRAULIC OIL AT OPERATING TEMPERATURE. NOTE: The above values are for reference purposes only, 13918B-R4.10/08/03 SEE SERVICE MANUAL FOR SETTING PROCEDURE. 3.26

Tigercat T250 Loader

Lubrication and Maintenance

PRESSURE SETTINGS, Machine serial numbers 250T0111 to 250T0115 * With Load Sense relief temporarily set at 4900 psi. Set port relief to a point just above the point when the engine stops lugging. ** Turn pump compensator POR valve all the way out to set at 2900 psi. *** Set pressure with gauge on 'LS' port † Tigercat grapple set to 1750 psi.

Hultdins grapple set to 2900 psi. § Slasher cut port relief valve on "auxiliary" valve must be turned up above 2800 psi before setting port relief on "main valve". ¶ Set MARGIN PRESSURE while holding SWING over relief.

CYCLE TIMES, FACTORY SETTINGS Main Valve Flow Adjustment LEFT track speed Forward and Reverse ........................................

Heel IN (option) ........................................................................... 4 Heel OUT (option) ....................................................................... 4 Grapple SAW (option) ................................................................... 9 Delimber OPEN ........................................................................... 8 Slasher CUT ................................................................................ 8 Stick IN ........................................................................................ 6 Stick OUT ............................................................................... 6.75 RIGHT track speed Forward and Reverse ......................................

Hoist DOWN ............................................................................... 8 Hoist UP ................................................................................... 8.5 Swing CCW ................................................................................. 9 Swing CW ................................................................................... 9

See service manual seconds seconds turns ‡ turns ‡ turns ‡ seconds seconds See service manual seconds seconds rpm rpm

‡ To adjust, carefully turn the flow adjusting screw IN until it just touches the spool. Then turn the flow adjusting screw OUT 'x' turns. (example: To set Delimber OPEN turn the flow adjusting screw IN until it just touches the spool. Then turn the flow adjusting screw OUT 9 turns.)

NOTE: •

All cycle times are set at full throttle.

•

Cycle time is adjusted by the flow adjusting screw opposite the work port connection.

•

The above chart lists factory set cycle times and settings. It should be noted that over adjusting to provide faster cycle times could increase the stress on boom components and the hydraulic system.

13918B-R4.10/08/03

3.27

Tigercat T250 Loader

Lubrication and Maintenance

PRESSURE SETTINGS, Machine serial numbers 250T0131 and up ENGINE RPM WITH CUMMINS 6CTAA8.3 (205 HP @ 2200 RPM) FULL THROTTLE, NO LOAD, MAX .................................... 2400 RPM IDLE, NO LOAD ..................................................................... 950 RPM RATED WORKING .............................................................. 2200 RPM L.H. FINAL DRIVE CROSSLINE RELIEFS .......................................................... 4700 PSI (CRACKING PRESSURE) BEGIN OF REGULATION ..................................................... 3100 PSI BRAKE RELEASE ................................................................... 500 PSI SPEED: LOW .................................................................... 14.5 RPM (TRACK DRIVE SPROCKET) DRIVE .................................................................... 28 RPM (TRACK DRIVE SPROCKET) R.H. FINAL DRIVE CROSSLINE RELIEFS ........................................................... 4700 PS (CRACKING PRESSURE) BEGIN OF REGULATION ..................................................... 3100 PSI BRAKE RELEASE ................................................................... 500 PSI SPEED: LOW .................................................................... 14.5 RPM (TRACK DRIVE SPROCKET) DRIVE .................................................................... 28 RPM (TRACK DRIVE SPROCKET) MAIN PUMP (LINDE) START OF ANTI-STALL OUTPUT (MODULE AX159) .............. 2100 RPM MAIN VALVE (LINDE) HIGH PRESSURE LIMITING CONTROL MAIN RELIEF ........................................................................................ NONE ADJUSTABLE LOAD SENSE RELIEF P1 .................................................................... SCREW IN FULLY (LOCKED OUT) LOAD SENSE RELIEF P2 (AT ‘P’ PORT) ............................ 4500 PSI @ FULL THROTTLE MARGIN PRESSURE (‘P’ TO ‘LS’ DEFERENCE) .............. ¶ 300 PSI @ FULL THROTTLE MAIN VALVE PORT RELIEFS LEFT TRACK FORWARD AND REVERSE SPOOL SECTION ........... NO PORT RELIEF PORT RELIEF HEEL IN (OPTION) ..................................... *4900 PSI @ 1200 RPM PORT RELIEF HEEL OUT (OPTION) ................................. *4900 PSI @ 1200 RPM PORT RELIEF GRAPPLE OPEN ...................................... ***2500 PSI @ IDLE PORT RELIEF GRAPPLE CLOSE .................................... ***2500 PSI @ IDLE PORT RELIEF STICK IN ..................................................... *4900 PSI @ 1200 RPM PORT RELIEF STICK OUT ................................................. *4900 PSI @ 1200 RPM PORT RELIEF SLASHER CUT ...................................... § ***2700 PSI @ FULL THROTTLE PORT RELIEF GRAPPLE SAW (OPTION) ....................... ***3600 PSI @ FULL THROTTLE PORT RELIEF HOIST DOWN ............................................. *4900 PSI @ 1200 RPM PORT RELIEF HOIST UP .................................................... *4900 PSI @ 1200 RPM RIGHT TRACK FORWARD AND REVERSE SPOOL SECTION ......... NO PORT RELIEF PILOT SUPPLY MAIN RELIEF ............................................................................... 425 PSI @ FULL THROTTLE SWING MOTOR CROSSLINE RELIEFS .............................................................. µ2000 PSI @ IDLE "SWING" PUMP COMPENSATOR POR ............................................................. **3600 PSI @ FULL THROTTLE COMPENSATOR STANDBY VALVE .......................................................... SCREW IN FULLY (LOCKED OUT) MINIMUM DISPLACEMENT ....................................................................... DO NOT ADJUST MAXIMUM DISPLACEMENT ...................................................................... TURN ADJUSTING SCREW IN UNTIL IT JUST TOUCHES THE SWASHPLATE, THEN TURN IN 1/2 TURN MORE. "SWING" VALVE MAIN RELIEF ......................................................................... 4000 PSI @ IDLE PORT RELIEF SWING CCW ............................................................... TURN ADJUSTING SCREW IN PORT RELIEF SWING CW .................................................................. TURN ADJUSTING SCREW IN PORT RELIEF SLASHER CUT .......................................... § 2500 PSI @ FULL THROTTLE PORT RELIEF SAW RETRACT ............................................ 1500 PSI @ FULL THROTTLE PORT RELIEF GRAPPLE ROTATE CCW .......................... †1750 PSI @ FULL THROTTLE PORT RELIEF GRAPPLE ROTATE CW ............................. †1750 PSI @ FULL THROTTLE CAB TILT VALVE MAIN RELIEF ......................................................................... 2000 PSI @ IDLE

ALL PRESSURES MUST BE SET WITH HYDRAULIC OIL AT OPERATING TEMPERATURE. NOTE: The above values are for reference purposes only, 16294B-R4.10/08/03 SEE SERVICE MANUAL FOR SETTING PROCEDURE. 3.28

Tigercat T250 Loader

Lubrication and Maintenance

PRESSURE SETTINGS, Machine serial numbers 250T0131 and up * With Load Sense relief temporarily set at 4900 psi. Set port relief to a point just above the point when the engine stops lugging. ** Turn pump compensator POR valve all the way out to set at 2900 psi. *** Set pressure with gauge on 'LS' port † Tigercat grapple set to 1750 psi.

Hultdins grapple set to 2900 psi. § Slasher cut port relief valve on "SWING" valve must be turned up above 2800 psi before setting port relief on "main valve". ¶ Set MARGIN PRESSURE while holding SWING over relief. µ For 36 ft. reach boom, set to 3000 psi.

CYCLE TIMES, FACTORY SETTINGS Main Valve Flow Adjustment LEFT track speed Forward and Reverse ........................................

Heel IN (option) ........................................................................... 4 Heel OUT (option) ....................................................................... 4 Grapple OPEN .......................................................................... 8.5 Grapple CLOSE ........................................................................ 8.5 Stick IN ........................................................................................ 6 Stick OUT ............................................................................... 6.75 Slasher CUT ............................................................................. 7.5 Grapple SAW (option) ................................................................... 9 Hoist DOWN ............................................................................... 8 Hoist UP ................................................................................... 8.5 RIGHT track speed Forward and Reverse ......................................

See service manual seconds seconds turns ‡ turns ‡ seconds seconds turns ‡ turns ‡ seconds seconds See service manual

‡ To adjust, carefully turn the flow adjusting screw IN until it just touches the spool. Then turn the flow adjusting screw OUT 'x' turns. (example: To set GRAPPLE OPEN turn the flow adjusting screw IN until it just touches the spool. Then turn the flow adjusting screw OUT 8.5 turns.)

NOTE: •

All cycle times are set at full throttle.

•

Cycle time is adjusted by the flow adjusting screw opposite the work port connection.

•

The above chart lists factory set cycle times and settings. It should be noted that over adjusting to provide faster cycle times could increase the stress on boom components and the hydraulic system.

16294B-R4.10/08/03

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Tigercat T250 Loader

Lubrication and Maintenance

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