Tigercat T240B Track Loader Instruction Manual
- June 27, 2024
- Tigercat
Table of Contents
- Tigercat T240B Track Loader
- Product Information
- Product Usage Instructions
- Contact Information
- FAQs
- INTRODUCTION
- SAFETY SYMBOLS
- LUBRICATION & MAINTENANCE
- PILOT PUMP
- ELECTRICAL, GAUGES & ALARMS
- IMPORTANT TRACK DRIVE NOTES
- BOOM PUMP
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Tigercat T240B Track Loader
Product Information
Specifications
- Product: Tigercat T240B Track Loader
- Serial Number: 240T0271 and up
- Manufacturer: Tigercat Industries Inc.
Introduction
The Tigercat T240B Track Loader comes with an Operator’s manual, Service manual, and a Parts catalog to help users familiarize themselves with the machine. The operator’s manual provides guidance on safe and proper operation of the loader, including important information on operating the saw head. The service manual contains safety procedures, servicing guidelines, and a maintenance schedule for optimal performance.
Safety Information
Section 1 of both manuals contains crucial safety instructions that must be strictly followed. Throughout the manuals, WARNING and CAUTION notices highlight potential hazards during specific procedures. Only trained personnel should operate or work on the machine to ensure safety.
Updates and Changes
The information in the manuals is current at the time of printing. Any updates or changes to the machine may not be immediately reflected in the manuals. Users are advised to contact a Tigercat dealer for the latest information. Tigercat reserves the right to modify the machine post-manual release, and updates are provided regularly.
Non-Approved Changes
Tigercat strictly prohibits unauthorized modifications or attachments to the product as they can compromise its performance, integrity, stability, and safety. Only Tigercat-approved options installed in the factory-approved manner are permitted.
Product Usage Instructions
Operator’s Manual
Refer to the Operator’s manual for detailed instructions on operating the Tigercat T240B Track Loader, including techniques for safe and proper operation of the machine and saw head.
Service Manual
Consult the Service manual for safety procedures, servicing guidelines, and a preventive maintenance schedule to ensure the loader’s optimum performance. Only trained personnel should perform maintenance tasks on the machine.
Contact Information
For any discrepancies or queries regarding the machine post-release date of
this manual, contact Tigercat service department. The contact details are
provided below:
P.O. Box 544 Paris, Ontario Canada N3L 3T6
Tel: 519-442-1000
Fax: 519-442-1855
FAQs
Q: Can I make modifications to the Tigercat T240B Track Loader?
A: No, Tigercat prohibits any unauthorized changes to the machine. Only approved options fitted in the factory-approved manner are allowed.
SERVICE MANUAL
Tigercat T240B Track Loader
Tigercat ®
P.O. Box 544 Paris, Ontario Canada N3L 3T6
Tel: 519-442-1000 Fax:
519-442-1855
Tigercat T240B Track Loader
Introduction
ii
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Introduction
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 T240B Track Loader.
Serial Number 240T0271 and up.
The operator’s manual will assist the operator with the techniques of proper
and safe operation of the T240B Track 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.
iii
Tigercat T240B Track 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
AUGUST, 2006
Tigercat T240B Track Loader
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.
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Safety
Tigercat T240B Track Loader
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.
Follow all instructions from safety inspector and supervisors.
Safety
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.
KEEP CLEAR
When approaching an operating machine on foot, stay at least 300 feet (90M)
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.
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.
Do not let an untrained person operate the machine.
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.
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.
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.
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 familiar with
Tigercat T240B Track Loader GENERAL SAFETY PRECAUTIONS continued
Avoid mounting or dismounting the machine in areas with slippery surfaces. If
this is not possible clean up or cover slippery surfaces with a non-slip
material. 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.
Safety
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.
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.
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.
Read, understand and follow all general safety precautions specified by
grapple, delimber and saw manufacturers.
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.
Do not operate the machine with any defective or inoperable components.
Do not operate the machine with any of the exhaust system, safety covers, or
other devices removed.
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.
Tigercat T240B Track Loader
OPERATING SAFETY PRECAUTIONS
Safety
Prior to commencing work, check all equipment controls to ensure that the
machine responds correctly.
Ensure that the windshield guard is installed and properly secured.
Shut off engine when refuelling – DO NOT refuel the engine while smoking or
when near open flame or sparks. 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.
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.
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. When the engine is running,
DO NOT allow anyone in areas of the machine where they may be injured or
crushed by moving components. 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.
WARNING
For engine starting and stopping procedures refer to STARTING ENGINE and
STOPPING ENGINE in SECTION 2 of the THIS MANUAL. For correct engine speeds,
refer to THROTTLE CONTROL in SECTION 2 of the THIS MANUAL. Never use a liquid
starting aid to start an engine with a pre-heat device.
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Tigercat T240B Track Loader
OPERATING SAFETY PRECAUTIONS continued
Do not allow other people either in the cab or anywhere else on the machine.
Safety
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.
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.
WARNING
Always lower the boom to the ground and shut down the engine before leaving
the cab.
WARNING
Safe mounting of this loader onto a trailer or truck is the responsibility of
the owner.
WARNING
An unstable loader can cause serious injury or death or equipment damage. Do
not operate the loader without lowering the stabilizers onto firm ground and
with the loader level.
240B-003 BATTERY DISCONNECT SWITCH
Turn the battery disconnect switch off if the vehicle is to be idle for an
extended period of time (Example – overnight).
DANGER
A moving stabilizer can cause serious injury or death. Before lowering the
stabilizers make sure the area is clear of personnel.
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.
WARNING
Do not allow the driver to remain in the truck cab during loading operations
and do not move loads over the top of the truck cab. Serious injury or death
or property damage may result.
Tigercat T240B Track Loader
SERVICING SAFETY PRECAUTIONS
Safety
SAFETY INTERLOCK SWITCH ON LEFT ARMREST:
The left arm rest is equipped with a safety interlock switch (1) to prevent
the machine from being operated while the armrest is in the raised position
(pilot system is shut off).
NOTE: The engine can be started but the machine functions cannot be operated
with the left arm rest up.
Conduct maintenance inspections at least as frequently as recommended in
section 3 of the operator’s manual. When servicing or repairing equipment,
shut the engine down. Turn Master Disconnect switch OFF. Install a “DO NOT
START ENGINE” sign on the operator’s cab door when making repairs to the
machine.
Before performing maintenance or repair work on any equipment, consult the
manufacturer’s instruction manual and follow recommended procedures. The
radiator and the engine cooling system should be inspected daily and cleaned
as necessary to maintain moderate engine temperatures.
WARNING
ARMREST
·
L.H. ARM REST IN DOWN POSITION AND LIMIT SWITCH ON
1
LIMIT SWITCH ACTUATING LEVER ON SEAT BASE
·
·
247-25
PILOT SYSTEM SHUT OFF
To operate:
With the engine running and the left arm rest DOWN, push the pilot reset switch.
Once the safety interlock system has been activated, the safety of both the operator and all persons outside the cab becomes the responsibility of the operator.
The left arm rest safety interlock switch (pilot system shut off limit switch) and the pilot reset switch are a safety feature and their function must not be defeated in any way.
WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!
· Before servicing the machine, allow the
engine cooling system, fuel system, exhaust system, hydraulic system and
machine surfaces to cool down.
· Use a thermometer to check surface and
system temperatures to ensure it is safe to begin service work.
· DO NOT begin service work until the
surface or system temperature has cooled down to below 100°F (38°C)!
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Tigercat T240B Track Loader
SERVICING SAFETY PRECAUTIONS continued
Prior to welding on any part of the machine, it should be cleaned and a fire
extinguisher should be made available at the welding location. Care must be
taken in attaching the welding machine grounding clamp so current does not
pass through pins and bearings, especially the swing bearing.
Turn the battery disconnect switch off. Also,
Disconnect the engine CPU (Central Processing Unit) by unplugging the two
multi-pin connectors from the left side of the engine.
Safety
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.
·
·
240T-021
DISCONNECT THE TWO MULTI-PIN PLUGS FROM THE
ENGINE CPU
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.
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.
Do not change any pressure or relief setting unless authorized instruction has
been obtained.
Use the proper tool for the job. Repair or replace worn or damaged tools
including lifting equipment immediately.
Tigercat T240B Track Loader
SERVICING SAFETY PRECAUTIONS continued
Safety
Keep your hands, feet, head, and loose clothing away from power driven parts.
Tie long hair behind your head. Remove rings and other jewellery to prevent
electrical shorts and entanglement in moving parts.
Always be aware of machine pinch points that could cause injury. Never place
body parts within the range of motion of the working parts of the machine.
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.
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.
Before draining any fluids, know the proper way to dispose of them.
If the engine is running inside a building, ensure that sufficient ventilation
is available to prevent a buildup of toxic exhaust fumes. Run the engine only
when it is necessary for testing or adjustments.
Work in a ventilated area. If it is necessary to run an engine in an enclosed
area, use an exhaust pipe extension to remove toxic exhaust fumes.
If you don’t have an exhaust pipe extension, either work outside, or open the
shop doors.
Tigercat T240B Track Loader
FIRE PREVENTION
When working in a forest environment, it is impossible to prevent combustible
debris from collecting in tight corners of the machine. This debris, in
itself, may cause a fire; however, when mixed with fuel, oil or grease in a
hot or confined place, the danger of fire is greatly increased. The following
fire prevention guidelines should be used to supplement the operator’s fire
prevention efforts. In no case should the guidelines be used, or assumed, as
replacements for diligent operator efforts at preventing fires. The following
guidelines will help to keep your equipment up and running efficiently and
keep the risk of fire 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. Inspect the
EXHAUST SYSTEM DAILY for any signs of LEAKAGE. Check for worn, cracked,
broken, or damaged pipes or muffler. Also check for missing or damaged bolts
or clamps. Should any exhaust leaks or defective parts be found, repairs must
be made immediately. Engine exhaust leaks can cause fires, DO NOT OPERATE the
machine until the exhaust leak is repaired. 4. During daily operation of the
machine, the occurrence of exhaust leaks are usually accompanied by a change
or increase in engine exhaust noise levels. These audible warnings cannot be
ignored. Should any exhaust leaks occur during operation, the machine must be
shut down immediately and not put back to work until the necessary repairs
have been completed.
Safety
5. 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.
6. 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 dislodged by vibration this smoldering debris can fall into other
areas of the machine and thereby spread a fire.
7. 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.
8. AFTER transporting (trucking) a machine from one job sight to the next,
open all doors and access panels and blow off any debris that may have
repositioned itself onto the engine and exhaust parts due to wind turbulence
caused by the journey.
9. Clean up any grease, diesel fuel, hydraulic and lubricating oil
accumulation and spillage immediately.
10. Steam clean the engine, fuel and hydraulic tank compartments of all
equipment at least once a month or more frequently depending on logging
conditions.
11. 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.
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Tigercat T240B Track Loader
FIRE PREVENTION continued
12. Shut down equipment immediately when a problem is suspected or smoke is
detected.
13. Park the machine at least 50 feet away from other equipment at the end of
each shift.
14. Turn the battery disconnect switch to OFF at shut down to avoid loss by
electrical short.
15. Remain with the machine for at least 45 minutes at the end of operations
while the machine cools.
16. 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.
17. Remove all keys, lock equipment and fuel cap at the end of operations to
reduce the risk of vandalism.
18. Before starting repair work, such as welding, the surrounding area should
be cleaned and a fire extinguisher should be close by.
19. Use only nonflammable solutions for cleaning the machine or components.
20. Store rags and other combustible materials in a safe, fireproof location.
21. 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.
Safety
· 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.
WHAT TO DO IN CASE OF A MACHINE FIRE
· At all times ensure your own personal safety and the safety of anyone that
may be in the area. Approach any fire with extreme caution.
· If the machine is in a dangerous position, attempt to move to a safe
position. Lower working attachment to the ground.
· Shut the engine off.
- · Activate the fire suppression system
· 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.
· If you can safely do so, turn OFF battery disconnect switch.
· A dry chemical fire extinguisher should be used first, if available.
Continued on page 12
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Tigercat T240B Track Loader
FIRE PREVENTION continued
Continued from page 11
· Use the PASS method with most extinguishers.
· 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.
Safety
· Remain with the machine until help arrives to ensure that the fire does not
re-ignite.
· Ensure that the machine and all components have cooled down sufficiently
after a fire has occurred. Beware of the possibility of coolant or hydraulic
hoses rupturing after a fire spraying hot oil or coolant which may result in
severe burns.
WHAT TO DO AFTER A FIRE
· 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.
*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.
TYPICAL FIRE EXTINGUISHER
20229A
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.
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Tigercat T240B Track Loader
LUBRICATION & MAINTENANCE
PREVENTIVE MAINTENANCE SCHEDULE FOR T240B TRACK 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:~ Check torque on swing bearing retaining bolts Engine mounting bolts Pump drive gearbox mounting bolts Pilot pump mounting bolts Swing gearbox mounting bolts Swing motor mounting bolts Cab securing bolts Boom pin nuts Track shoe bolts Track roller retaining bolts Track sprocket retaining bolts Track drive gearbox mounting bolts Track drive motor mounting bolts All hydraulic connections Hose clamps Pin retainers Any other loose nut, bolt or fitting
NOTE: Use of filters other than genuine Tigercat replacement filters is not
recommended.
Refer to diesel engine service manual and attachment manual for additional
required maintenance at this scheduled time period.
IMPORTANT
Before driving machine ensure that the track tension (sag) is set correctly.
Track sag may be set less than specified for shipping purposes.
OIL LOST FROM LEAKAGE
LOST 0IL (GALLONS)
LEAKAGE RATE
PER PER PER DAY MONTH YEAR
ONE DROP IN 10 SECONDS
0.112
3.36 40.0
ONE DROP IN 5 SECONDS
0.225
6.75 81.0
ONE DROP SECOND
1.125 33.75 405.0
THREE DROP PER SECOND 3.75 112.5 1,350.0
DROPS BREAK INTO STREAM 24.00 720.0 8,640.0
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Tigercat T240B Track Loader
Lubrication and Maintenance
GENERAL
CAUTION
All handles, steps and platforms must be kept free of grease, oil, fuel mud, snow ice and forest debris to prevent risk of personal injury
WARNING
Clean around filler caps before checking or adding fluids
Clean around hydraulic fittings before breaking connection. Plug or cap immediately
WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!
Clean up spills as soon as possible Always use clean oil and containers
· Before servicing the machine, allow the
engine cooling system, fuel system, exhaust system, hydraulic system and
machine surfaces to cool down.
· Use a thermometer to check surface and
system temperatures to ensure it is safe to begin service work.
· DO NOT begin service work until the
surface or system temperature has cooled down to below 100°F (38°C)!
Drain dirty oil while still warm
Do not exceed recommended fluid levels
Service all hydraulic filters after the failure of a pump, motor, cylinder or
valve. Failures of this nature could contaminate the entire hydraulic system
Top up diesel fuel at each shift to reduce contamination by condensation
Clean up oil spills on walking surfaces in engine enclosure immediately
Before welding on machine be sure the negative battery terminal is disconnected
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 assy. To the ground when leaving cab, leaving machine unattended or during service
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Tigercat T240B Track Loader
Lubrication and Maintenance
SCHEDULED MAINTENANCE
EVERY 8 HOURS:~
· Check engine coolant level · Check engine oil level · Drain fuel/water
separator · Check hydraulic oil level · Check swing gearbox oil level
Fill reservoir to halfway mark
Lubricate:~ · Swing pinion;
1-fitting – 10 shots while swinging · Swing bearing;
1-fitting – 10 shots while swinging · Boom joints;
4-fittings – purge · Cylinders; boom, stick & tilt;
4-fittings total – purge
Lubricating cylinder pins and boom joints:1. Ensure machine is on level ground
2. Fully extend stick boom cylinder 3. Lower main boom and rest grapple firmly
on ground or stable trailer 4. While in this position lubricate all cylinder
retaining pins and boom joints NOTE: This procedure will allow grease to flow
to the normally “loaded” side of the pin/bearing surfaces.
Clean:~ · Oil cooler, engine radiator and a/c condensor · Remove potentially
damaging limbs or sticks
and all debris
Check:~ · For leakage around hydraulic components and
flexible hoses · For loose nuts, bolts and fittings · Condition and tension of
fan belts. · Conduct an overall visual inspection. · Refer to diesel engine
service manual and
attachment manual for additional required maintenance at this scheduled time
period.
EVERY 125 HOURS:~
· Perform 8 hour maintenance
And in addition replace:~ · Return filters restriction indicator with engine
running at high idle and oil flow · Track drive gearbox oil level with both
level plugs in line with the horizontal plane and above center · Fluid level
in batteries unless maintenance free · Engine rpm. · All hydraulic pressures ·
Hydraulic pumps and motor securing bolts · Torque tightening points as per new
machine maintenance
Visually check for damage to:~ · Main and stick booms and cylinders · Tracks,
track frames and carbody · Swing bearing area · Attachment Make repairs
immediately
Visually inspect for:~ · Frayed electrical wiring and hydraulic hoses · Wear
in any other components
Clean/replace:~ · Air conditioner re-circulation filter · Cab fresh air filter
· Refer to diesel engine service manual and
attachment manual for additional required maintenance at this scheduled time
period.
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Continued on page 5
Tigercat T240B Track Loader
Lubrication and Maintenance
SCHEDULED MAINTENANCE
Continued from page 4
EVERY 250 HOURS:~
· Perform 8 hour maintenance · Perform 125 hour maintenance
And in addition:~ · Replace engine oil and filter · Replace engine fuel filter
· Replace air intake primary element · Pump drive gearbox · Track drive
gearboxes
Fill track drive gearbox with both level plugs in line with the horizontal
plane and above center
EVERY 500 HOURS:~
· Perform 8 hour maintenance · Perform 125 hour maintenance · Perform 250 hour
maintenance
And in addition replace:~ · Air intake safety element · Hyd. Oil return
filters · Hyd. Oil pilot pressure filter · Oil in swing gearbox
Fill reservoir to halfway mark
Lubricate:~ · Door and cover hinges
8 fittings – 1 shot
Check:~ · Torque on swing bearing and swing gearbox
retaining bolts · Torque on track drive gearboxes and motor
mounting bolts · Track rollers and idlers for oil leakage. These
components are filled with oil and considered maintenance free. If oil leakage
is detected repair of component(s) will be necessary. · Refer to diesel engine
service manual and attachment manual for additional required maintenance at
this scheduled time period.
EVERY 1000 HOURS:~
· Perform 8 hour maintenance · Perform 125 hour maintenance · Perform 250 hour
maintenance · Perform 500 hour maintenance
And in addition check:~ · Fuel intake strainer
EVERY 2000 HOURS:~
Drain and refill hydraulic oil tank with recommended hydraulic oil. See
APPROVED HYDRAULIC OILS
APPROVED HYDRAULIC OILS
Use only one of the following oils to fill or replenish the hydraulic system.
Chevron Tractor hydraulic fluid (summer)
Citgo
Tractor hydraulic fluid (33-310) (summer)
Imperial
Esso hydraul 56 (summer)
Hydraul 50 (low visc) (winter)
Shell
Donax td (summer) Donax tdl (winter)
Sun
Sunfleet th fluid (summer)
John deere Type j20c (hy-gardtm) (summer) Type j20d (hy-gardtm) (winter)
NOTE: Use of filters other than genuine Tigercat
replacement filters is not recommended.
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Tigercat T240B Track Loader
Lubrication and Maintenance
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Tigercat T240B Track Loader
Lubrication and Maintenance
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Tigercat T240B Track Loader
Lubrication and Maintenance
RETURN MANIFOLD
DOUBLE FILTER HEADS
·
·
FILTER HEAD
·
·
GASKET
·
·
FILTER
ELEMENT
SQUARE SECTION GASKET INSTALLATION
FILTR_SEALS 2
Square Section Gasket
358-17
HYDRAULIC RETURN FILTERS
HYDRAULIC OIL RETURN FILTERS
Two double filter heads (four 7 micron elements) filter all returning hydraulic oil except pilot, prior to entering the hydraulic reservoir. Each filter head has a bypass valve with a 25 psi cracking pressure so that oil can bypass the filters if they become restricted. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION.
Changing the filters:
Remove used gasket and clean groove in head. Apply clean oil to new gasket
surfaces. Install new gasket into groove in filter head. Screw on new filter
until gasket makes contact. Tighten filter an additional 3/4 turn.
FILTER HEAD
· ·
GASKET
· FILTER ELEMENT
1. Ensure Loader is on level ground with stabilizers FILTR_SEALS 2 ‘O’ RING GASKET INSTALLATION
z down. Lower grapple to ground, stop engine, put
‘O’ Ring Gasket
parking brake ON.
Remove used gasket and clean gasket seat in
2. Wipe clean the area around the filter and head.
head.
3. Place rags below to catch the spillage of oil.
Apply clean oil to new gasket surfaces.
4. Wearing face protection (in case of an oil squirt),
Install new gasket on inside lip of filter.
unscrew the old filter. Dispose of old filter and
Screw on new filter until gasket makes contact.
any oil properly.
Tighten filter until top edge makes metal to
6. The new Tigercat filter is supplied with two gaskets enclosed, examine the filter head closely to determine which gasket should be
metal contact with filter head. (approximately 1 1/2 additional turns after gasket contact)
used and follow the instructions to ensure
10. Start the engine and check for leaks.
proper installation.
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Tigercat T240B Track Loader
LOCATED LOWER LEFT SIDE OF ENGINE COMPARTMENT
Lubrication and Maintenance
·
PILOT FILTER ELEMENT
205-23A
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 level ground. Lower grapple to ground, stop engine, put parking brake ON.
2. Wipe clean the area around the filter and head.
3. Place rags below to catch the spillage of oil.
4. Wearing face protection (in case of an oil squirt), unscrew the old filter. Dispose of old filter and any oil properly.
5. Check the seating area for the gasket on the filter head and wipe it clean.
6. The new filter has an attached gasket, apply hydraulic oil to the gasket surface.
7. Screw on the new filter until the gasket makes contact with the seat in the filter head.
8. Turn filter an additional 1/2 turn by hand to tighten.
9. Start the engine and check for leaks.
IMPORTANT
Filters that are an integral part of the engine (fuel and lubricating oil)
should be
serviced and replaced according to the engine manufacturer’s operation and
maintenance manual.
IMPORTANT
Contaminated hydraulic fluid can lead to premature failure of hydraulic
components and costly repairs. Filters must be replaced at the recommended
time intervals, Refer to SCHEDULED MAINTENANCE in THIS SECTION.
Use of hydraulic oil filters other than the Tigercat brand could lead to
severe wear and rapid failure of hydraulic system components.
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Tigercat T240B Track Loader
AIR CONDITIONING – SERVICE
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 two weeks to
circulate oil to all components of the system.
R134a REFRIGERANT
PAG OIL (polyalkylene glycol)
2 LBS. 12 OZ.
2 OZ.
Any service work must be performed by authorized A/C technicians. The system should be charged with 2 lbs. 12 oz. of R134a refrigerant. At least 2 oz. of PAG (polyalkylene glycol) oil should be present in the system and must be used on ‘O’ rings and fittings during assembly.
Lubrication and Maintenance
CAUTION If using compressed air for cleaning filters, use at 30 psi. or less.
Always use personal protective equipment to guard against flying
A/C CONDENSER CORE
··
RADIATOR
A/C COMPRESSOR
·
240T-022
A/C COMPRESSOR
RECEIVER DRYER
·
206-6A CHECK A/C CONDENSER CORE Use the following checklist to maintain system
between service intervals. The compressor and charge valves are located on the
left side of the engine and accessible through the engine compartment door.
The receiver dryer is located in the lower engine compartment beside the front
left engine mount and accessible from either underneath the engine compartment
or through the engine compartment door.
Perform the following checks on system:
a. Check and adjust compressor drive belt tension.
b. Check fresh air filter and re-circulating air filter. Clean or replace as
required.
c. Check to see that compressor clutch will engage.
d. Check blower operation and air vents.
e. Check the condenser core for dirt and debris.
240T-023
CAUTION
LOWER FRAME
·
If using water or compressed air for cleaning, always use personal protective equipment to guard against flying debris.
A/C RECEIVER DRYER
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Tigercat T240B Track Loader
Lubrication and Maintenance
TORQUE CHART
LOCATION
THREAD DIAMETER
Cylinders Piston nut, main boom cylinder Piston nut, stick cylinder Piston nut, heel cylinder
2 1/2″-12 UNF (GC) 2 1/2″-12 UNF (GC) 2 1/4″-12 UNF (GC)
Piston nut, grapple cylinder
1 3/4″-12 UNF (GC)
Gland, grapple cylinder
4 1/2″ I/D CYLINDER
Keeper plate bolts, heel cylinder Keeper plate bolts, Main boom cylinder Keeper plate bolts, Stick boom cylinder
3/4″-10 UNC (G8) 7/8″-14 UNF (G8) 3/4″-16 UNF (G8)
Boom joint and cylinder pin retaining bolts
3/4″-10 UNC (G8)
Main and Stick boom pin retaining nut
2″-12 UNF (G8)
Heel to Stick boom pin retaining nut
1 3/4″-12 UNF (G8)
Cab securing bolts
7/8″-9 UNC (G8)
Swing bearing bolts Swing gearbox mounting bolts Swing motor mounting bolts
7/8″-9 UNC (G8) 5/8″-11 UNC (G8)
M14-2 (10.9)
Engine mounting Bolts, bracket/mount to chassis Bolts, bracket to engine
Engine cooling fan mounting bolts
7/8″-9 UNC (G8) M12-1.75 (10.9) M10-1.5 (12.9)
Pump drive Drive plate to flywheel Bell housing to engine
3/8″-16 UNC (G8) M10-1.5 (10.5)
Undercarriage Track shoe bolts Idler bolts Roller mounting bolts Sprocket bolts Gearbox mounting bolts Drive motor mounting bolts
3/4 UNF M16-2 (10.9) 7/8″-9 UNC (G8) M20-2.5 (10.9) 3/4″-10UNC (G8) M12-1.75 (10.9)
TORQUE (LUBRICATED)
lbf-ft
Nm
3200 3200 2100
1750
450
275-325 300-325 240-270
282-310
400
400
450-500
400-450 160-175
130
4320 4320 2835
2355
607
370-440 405-440 323-363
393-420
540
540
610-680
540-610 215-235
175
450-500 75 40
610-680 100 54
40
54
45
60
T/T*
T/T*
175
235
450
610
380
515
310
417
80
110
*T/T represents Torque-Turn, this is a method of torquing the track shoe bolts. Refer to SECTION 11 in the Tigercat SERVICE MANUAL for a complete description on this method of applying torque.
Torque values pertaining to the engine and attachment are provided in the
appropriate manuals.
Tigercat T240B Track Loader
Lubrication and Maintenance
GENERAL TORQUE SPECIFICATIONS
IMPERIAL
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.
GRADE 8 BOLTS
GRADE 5 BOLTS
IMPERIAL BOLT TORQUE SPECIFICATIONS
GRADE 8 BOLTS
GRADE 5 BOLTS
C O AR S E
DRY
LUBRICATED
THREAD
lbf-ft
Nm
lbf-ft
Nm
1/4″ – 20 11 – 12
15 – 16
8 – 10
11 – 13
5/16″ – 18 26 – 30
35 – 40
20 – 28
27 – 38
3/8″ – 16 44 -48
60 – 65
33 – 36
45 – 49
7/16″ – 14 70 – 77
95 – 104
52 – 57
71 – 77
1/2″ – 13 106 – 117 144 – 158 80 – 88 109 – 119
9/16″ – 12 153 – 168 208 – 228 115 – 127 156 – 172
5/8″ – 11 212 – 233 288 – 316 159 – 175 216 – 237
3/4″ – 10 376 – 414 510 – 561 282 – 310 393 – 420
7/8″ – 9 606 – 667 822 – 904 455 – 501 617 – 679
1″ – 8 909 – 1000 1233 – 1355 682 – 750 925 – 1016
1 1/8″ – 7 1288 – 1417 1746 – 1921 966 – 1062 1310 – 1441
1 1/4″ – 7 1817 – 1999 2464 – 2710 1360 – 1496 1844 – 2027
FINE
DRY
LUBRICATED
THREAD
lbf-ft
Nm
lbf-ft
Nm
1/4″ – 28 13 – 14
18 – 19
10 – 13
14 – 17
5/16″ – 24 23 – 28
31 – 38
18 – 25
25 – 33
3/8″ – 24 49 – 54
67 – 73
37 – 41
50 – 55
7/16″ – 20 78 – 86 106 – 116 58 – 64
79 – 86
1/2″ – 20 120 – 132 163 – 179 90 – 99 122 – 134
9/16″ – 18 171 – 188 232 – 255 128 – 141 174 – 191
5/8″ – 18 240 – 264 326 – 358 180 – 198 244 – 268
3/4″ – 16 420 – 462 570 – 626 315 – 347 427 – 470
7/8″ – 14 668 – 735 906 – 996 501 – 550 679 – 745
1″ – 14 995 – 1096 1359 – 1486 746 – 821 1012 – 1113
1 1/8″ – 12 1445 – 1590 1960 – 2155 1083 – 1191 1469 – 1613
1 1/4″ – 12 2012 – 2213 2728 – 2997 1509 – 1660 2046 – 2250
COARSE
DRY
THREAD 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
THREAD 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″ – 14 646 – 711 876 – 965
1 1/8″ – 12 891 – 980 1208 – 1328
1 1/4″ – 12 1240 – 1364 1682 – 1849
LUBRICATED
lbf-ft
Nm
8 – 10
11 – 13
10 – 15
13 – 20
23 – 25
31 – 34
37 – 41
50 – 55
57 – 63
77 – 85
82 – 90 111 – 122
113 – 124 152 – 168
200 – 220 271 – 298
296 – 326 402 – 441
443 – 489 601 – 663
596 – 656 808 – 889
840 – 924 1139 – 1252
LUBRICATED
lbf-ft
Nm
9 – 10
12 – 13
16 – 20
21 – 27
26 – 29
35 – 39
41 – 45
56 – 61
64 – 70
87 – 95
91 – 100 124 – 135
128 – 141 174 – 191
223 – 245 303 – 332
326 – 359 442 – 486
484 – 534 657 – 724
668 – 735 906 – 996
931 – 1024 1262 – 1387
METRIC
SIZE
M6 M8 M10
CLASS 4.8
LUBRICATED
DRY
Nm lbf-ft Nm lbf-ft
4.8
3.5
6.0
4.5
12.0
8.5 15.0 11.0
23.0 17.0 29.0 21.0
METRIC BOLT TORQUE SPECIFICATIONS
CLASS 8.8 OR 9.9
CLASS 10.9
LUBRICATED
DRY
LUBRICATED
DRY
Nm lbf-ft Nm lbf-ft Nm lbf-ft Nm lbf-ft
9.0
6.5 11.0
8.5 13.0
9.5 17.0 12.0
22.0 16.0 28.0 20.0 32.0 24.0 40.0 30.0
43.0 32.0 55.0 40.0 63.0 47.0 80.0 60.0
CLASS 12.9
LUBRICATED
DRY
Nm lbf-ft Nm lbf-ft
15.0 11.5 19.0 14.5 37.0 28.0 47.0 35.0 75.0 55.0 95.0 70.0
M12 40.0 M14 63.0 M16 100.0
29.0 50.0 47.0 80.0 73.0 125.0
37.0 75.0 55.0 95.0 70.0 110.0 80.0 140.0 105.0 130.0 95.0 165.0 120.0 60.0 120.0 88.0 150.0 110.0 175.0 130.0 225.0 165.0 205.0 150.0 260.0 190.0 92.0 190.0 140.0 240.0 175.0 275.0 200.0 350.0 225.0 320.0 240.0 400.0 300.0
M18 135.0 100.0 175.0 125.0 260.0 195.0 330.0 250.0 375.0 275.0 475.0 350.0 440.0 325.0 560.0 410.0 M20 190.0 140.0 240.0 180.0 375.0 275.0 475.0 350.0 530.0 400.0 675.0 500.0 625.0 460.0 800.0 580.0 M22 260.0 190.0 330.0 250.0 510.0 375.0 650.0 475.0 725.0 540.0 925.0 675.0 850.0 625.0 1,075.0 800.0
M24 330.0 250.0 425.0 310.0 650.0 475.0 825.0 600.0 925.0 675.0 1,150.0 850.0 1,075.0 800.0 1,350.0 1,000.0 M27 490.0 360.0 625.0 450.0 950.0 700.0 1,200.0 875.0 1,350.0 1,000.0 1,700.0 1,250.0 1,600.0 1,150.0 2,000.0 1,500.0 M30 675.0 490.0 850.0 625.0 1,300.0 950.0 1,650.0 1,200.0 1,850.0 1,350.0 2,300.0 1,700.0 2,150.0 1,600.0 2,700.0 2,000.0
M33 900.0 675.0 1,150.0 850.0 1,750.0 1,300.0 2,200.0 1,650.0 2,500.0 1,850.0 3,150.0 2,350.0 2,900.0 2,150.0 3,700.0 2,750.0
M36 1,150.0 850.0 1,450.0 1,075.0 2,250.0 1,650.0 2,850.0 2,100.0 3,200.0 2,350.0 4,050.0 3,000.0 3,750.0 2,750.0 4,750.0 3,500.0
TORQUECHARTGENERAL.XLS
Tigercat T240B Track Loader
Lubrication and Maintenance
PRESSURE SETTINGS FOR T240B LOADER ON TRACKS
LOCATION
Pilot relief valve
Main relief stick valve Port relief L. H. track forward Port relief L. H.
track reverse Port relief stick out Port relief stick in Port relief grapple
saw cut(if equipped) Port relief slasher cut
Main relief hoist valve Port relief grapple open Port relief grapple close
Port relief hoist up Port relief hoist down Port relief R. H. track forward
Port relief R. H. track reverse
Main relief swing valve Port relief swing ccw Port relief swing cw Port relief
grapple rotate ccw Port relief grapple rotate cw Port relief slasher cut Port
relief slasher retract
Crossline reliefs swing motor
Tilt Cab Valve Tilt Cab C.B. Valve
Drive Brake Release Pressure Drive Begin of Regulation
5334B-R1.03-28-06
PRESSURE
450
3000 Turn In Turn In 3500 1500 3500 2500
3000 3500 3500 3500 1500 Turn In Turn In
2500 3000 3000 1750 1750 3000 1500
2000
SEE NOTE (4)
2000 3000
500 2500
IMPORTANT 1. System to be at operating temperature
when setting pressures. 2. All pressures measured in psi. 3. All main and port
relief valves to be set at
full engine rpm. 4. Swing motor crossline relief valves to be set
at engine idle and; Using the following procedure: a.Install swing locking
device or secure
boom to keep the machine from swinging. b.Disconnect and cap the pilot hose
running
to the swing motor crossline relief valves. c. At idle adjust both swing motor
crossline
relief valves to the value given on the chart. d.Reconnect the pilot hose and
purge the air out of the lines. 5. Track drive begin of regulation valves to
be set at full engine RPM using the folowing procedure:
a. Lower track drive main relief valves to 2500 psi.
b. Disconnect and plug both motor brake release lines.
c. Operate track in high speed (track should not move).
d. Adjust begin of regulation valve on each motor to give pressure between
8001000 psi at motor test port.
e. Reset main relief valves and reconnect brake lines.
6. Track drive speeds set at max. RPM to 16.5 rpm LOW and 28 rpm HIGH.
TILT CAB
1. Turn C.B. valve out fully then in 2 turns to achieve desired pressure.
Valve is pre-set at 2000 psi.
NOTE: The above values are for reference purposes only, SEE SERVICE MANUAL FOR SETTING PROCEDURE
Tigercat T240B Track Loader
Parker
Lubrication and Maintenance
Assembly Torque
Tigercat T240B Track Loader
Parker
SAE Dash Size -2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40
JIC 37 Degree Flare
Thread Size 5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12 3-12
Tube Connection FFWR
NA NA 2 2 1 1/2 1 1/2 1 1/2 1 1/4 1 1 1 1 1 1
Swivel or Hose Connection FFWR
NA NA 2 2 1 1/4 1 1 1 1 1 1 1 1 1
F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass
O’ring Face Seal / Seal-Lok
SAE Dash Size -2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40
Thread Size NA NA
9/16-18 NA
11/16-16 13/16-16
1-14 1 3/16-12
NA 1 7/16-12 1 11/16-12
2-12 NA NA
Tube Connection FFWR
NA NA 1/4 TO 1/2 NA 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 NA 1/4 TO 1/2
1/4 TO 1/2 1/4 TO 1/2 NA NA
Swivel or Hose Connection FFWR
NA NA 1/2 TO 3/4 NA 1/2 TO 3/4 1/2 TO 3/4 1/2 TO 3/4 1/3 TO 1/2 NA 1/3 TO 1/2
1/3 TO 1/2 1/3 TO 1/2 NA NA
F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass
Lubrication and Maintenance
Assembly Torque
SAE Dash Size -2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40
NPTF
Thread Size 1/8-27 NA 1/4-18 NA 3/8-18 1/2-14 7/8-14 3/4-14 NA 1-11 1/2
1 1/4-11 1/2 1 1/2-11 1/2
2-11 1/2 NA
Tube Connection Swivel or Hose
TFFT
Connection TFFT
2-3
2-3
NA
NA
2-3
2-3
NA
NA
2-3
2-3
2-3
2-3
NA
NA
2-3
2-3
NA
NA
1.5-2.5
1.5-2.5
1.5-2.5 1.5-2.5 1.5-2.5
NA
1.5-2.5 1.5-2.5 1.5-2.5
NA
T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass
SAE Dash Size -2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40
BSPT
Thread Size 1/8-28 NA 1/4-19 NA 3/8-19 1/2-14 NA 3/4-14 NA 1-11 1 1/4-11 1 1/2-11 2-11 NA
Tube Connection Swivel or Hose
TFFT
Connection TFFT
2-3
2-3
NA
NA
2-3
2-3
NA
NA
2-3
2-3
2-3
2-3
NA
NA
2-3
2-3
NA 1.5-2.5 1.5-2.5 1.5-2.5
NA 1.5-2.5 1.5-2.5 1.5-2.5
1.5-2.5 NA
1.5-2.5 NA
T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass
Tigercat T240B Track Loader
EATON Aeroquip
Lubrication and Maintenance
Assembly Torque
Recommended Parallel Connection Assembly torque
Straight Thread O-Ring Boss Low Pressure with 37º (SAEJ514)
Dash Size
-03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24 -32
Thread Size
(inches)
3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1
5/8-12 1 7/8-12 2 1/2-12
Jam Nut or Straight
Fitting Torque lb.-ft.
8-9 13-15 14-15 23-24 40-43 43-48 68-75 83-90 112-123 146-161 154-170 218-240
Jam Nut or Straight
Fitting Torque Newton Meters
12-13 18-20 19-21 32-33 55-57 59-64 93-101 113-122 152-166 198-218 209-230
296-325
Eaton recommends that a
The values listed are for
Torque wrench be used to
steel connections. Contact
assure proper fitting
Eaton Aeroquip for torques values for
assembly of these
other materials
connections.
Straight Thread O-Ring Boss High Pressure with ORS (J1453)
Dash Size
-03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24
Thread Size
(inches)
3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1
5/8-12 1 7/8-12
Jam Nut or Straight
Fitting Torque lb.-ft.
8-10 14-16 18-20 24-26 50-60 72-80 125-135 160-180 200-220 210-280 270-360
Jam Nut or Straight
Fitting Torque Newton Meters
11-16 20-22 24-27 33-35 68-78 98-110 170-183 215-245 270-300 285-380 370-490
ORS
Dash Size -04 -06 -08 -10 -12 -16 -20 -24
Thread Size
(inches)
9/16-18 11/16-20 13/16-16
1-14 1 3/16-12 1 7/16-12 1 11/16-12
2-12
Swivel Nut
Torque lb.-ft.
10-12 18-20 32-35 46-50 65-70 92-100 125-140 150-165
Swivel Nut
Torque Newton Meters
14-16 24-27 43-47 62-68 88-95 125-136 170-190 204-224
SAE 37º (JIC)
Dash Size -04
-05 -06 -08 -10 -12 -16 -20 -24 -32
Thread Size
(inches) 7/16-20
1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12
Swivel Nut
Torque lb.-ft. 11-12
15-16 18-20 38-42 57-62 79-87 108-113 127-133 158-167 245-258
Swivel Nut
Torque Newton Meters
15-16
20-22 24-28 52-58 77-85 108-119 148-154 173-182 216-227 334-352
Metric
BSPP
Thread Size
Straight Adapter or Locknut Torque
mm
lb.-ft.
Newton Meters
M10x1
13-15
18-20
M12x1.5
15-19
20-25
M14x1.5
19-23
25-30
M16x1.5
33-40
45-55
M18x1.5
37-44
50-60
M20x1.5
52-66
70-90
M22x1.5
55-70
75-95
M26x1.5
81-96
110-130
M27x2
96-111
130-150
M33x2
162-184
220-250
M42x2
170-192
230-260
M48x2
258-347
350-470
Nominal
Thread Size
Straight Adapter or Locknut Torque
inches**
lb.-ft.
Newton Meters
G1/8-28
13-15
18-20
G1/4-19
19-23
25-30
G3/8-19
33-40
45-55
G1/2-14
55-70
75-95
G3/4-14
103-118
140-160
G1-11
162-184
220-250
G1 1/4-11 170-192
230-260
G1 1/2-11 258-347
350-470
** “G” denotes parallel threads, other than ISO 6149
(Port connection only)
Eaton Aeroquip Fluid Conveyance Products A-HOOV-MC001-E January 2005
AUGUST, 2006
Tigercat T240B Track Loader PILOT SYSTEM COMPONENTS
LEFT SIDE OF ENGINE
· ·
PILOT PUMP
T240B-001
PILOT PUMP
The pilot circuit is supplied with oil from the pilot pump which is driven by the auxiliary drive off the left side of the engine.
Oil is first filtered by an in-line pressure filter before entering the pilot manifold. A pilot relief valve built into the pilot manifold maintains the pilot system pressure at 450 psi. The oil enters pilot manifold (inlet port) at this reduced pressure and is then distributed by the pilot manifold to the various pilot actuated functions of the machine. Solenoid operated pilot valves within the pilot manifold control the flow of pilot oil to various functions.
HYDRAULIC TANK
BALL VALVE (SHOW OPEN)
·· ··
TO PILOT PUMP
··
Pilot system
NOTE: Low pilot pressure can influence machine controls causing slow or
sluggish response times, If this symptom occurs, first check hydraulic oil
level in reservoir, if the level is correct, verify that the pilot relief
valve setting is 450 psi. Refer to SET PILOT PRESSURE in THIS SECTION.
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.
FILTER ELEMENT
·
LOCATED BELOW PUMPS
206-5A
PILOT FILTER
PRESSURE FILTER
This filter is a cartridge filter with a built-in differential pressure relief
valve, if the pressure differential at the oil filter exceeds 50 psi this
valve will bypass the pilot oil back to the tank. This will also result in
lower pilot pressure. If a loss of controls or slow response is experienced
the filter element may need to be changed.
T240B- PILOT SHUT-OFF BALL VALVE
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Tigercat T240B Track Loader
PILOT MANIFOLD
Pilot system
PILOT SHUT “IN” CONNECTION OFF VALVE FROM PILOT FILTER
“PB” POWER BEYOND PORT CONNECTIONS
TO JOYSTICKS AND FOOT PEDAL VALVES
“T” TANK CONNECTIONS
·
·
240B-038
PILOT MANIFOLD
PILOT MANIFOLD
The pilot manifold is located below the floor plates in the hydraulic valve compartment.
The pilot manifold distributes oil to the following circuits:
· Joysticks (both) · Swing control foot pedal · Gauge test port · Slasher saw, cut · Slasher saw, retract · Top saw, cut · Delimber, open · Optional Live Heel · Optional Live heel · Track Drive Enable · Travel Speed Low
(PB) port (PB) port (G) port (1) solenoid valve (2) solenoid valve (3) solenoid valve (4) solenoid valve (5) solenoid valve (6) solenoid valve (7) solenoid valve (8) solenoid valve
· ·
PILOT MANIFOLD
GAUGE TEST PORT CONNECTION
·
·
· ·
PILOT RELIEF VALVE
240B-D22
PILOT MANIFOLD
Two outlet ports (‘PB’) on each end of the pilot manifold, feed both joysticks and the swing foot pedal valve. A gauge test port (G) has a quick connect fitting installed for connecting a pressure gauge to perform pressure setting procedures.
Pilot oil enters the manifold through the inlet port.
The pilot shut off valve, which is an integral part of the pilot manifold,
controls the flow of oil from the INLET port to the three outlet ports
labelled (PB and G) and to the eight solenoid operated pilot valves. The pilot
shut off valve is activated by pressing the pilot reset switch in cab (with
the left armrest down).
Eight solenoid operated pilot valves on the manifold, when energized, supply
“on demand” pilot oil to the corresponding functions. These valves are
activated by controls in the cab.
Two tank ports (‘T’) drain return oil to the reservoir.
DRIVE OPTIONAL ENABLE LIVE HEEL
TRAVEL SPEED LOW
OPTIONAL LIVE HEEL
·
·· ·
TOP SAW, DELIMBER SLASHER
CUT
OPEN
SAW, CUT
·
·
SLASHER SAW, RETRACT
PILOT SHUT
·
OFF VALVE
·
·
GAUGE TEST PORT
‘PB’ TO JOYSTICK AND SWING FOOT PEDAL
·
230B-04
RETURN OIL FROM STABILIZER PILOT MANIFOLD
INLET
PILOT
·
RELIEF VALVE
·
PILOT MANIFOLD ASSEMBLY
https://cran5e.3manuals.com
·
·
· ·
‘T’ RETURN OIL TO TANK
Tigercat T240B Track Loader
JOYSTICKS AND FOOT PEDALS
These pilot valves are manually operated, directional control valves and
operate on the same principle as a direct operating pressure reducing valve.
Both the joystick and foot control valves (pedals) use similar spool
arrangements. Operated by hand or foot these valves direct pilot oil to the
main control valve pilot end caps. The corresponding spool valve then shifts
from its centre position and directs pump flow to operate a function.
·
1
5
·
Pilot system
OPERATING DESCRIPTION
In the neutral position the joystick lever, or foot pedal is held centered by
return springs (4). When the lever (1) is operated, the plunger (5) is pushed
against its return spring (4). At the same time the regulating spool (2) is
moved down against the regulating spring (3). When the regulating stroke
begins, there is a connection made between the pressure port, via holes (8) in
the spool and work ports in the base of the valve.
Pilot pressure is directly proportional to the operator position of the
joystick or foot pedal and the regulating spring characteristics.
3
TANK PORT
·
··
4
8
· ··
2
AW015
·
·
WORK PORT
PRESSURE PORT
WORK PORT
JOYSTICK PILOT VALVE (KAWASAKI)
1
·
5
·
TANK PORT
·
3
·
·
4
8
· ·
2
WORK PORT
·
·
PRESSURE PORT
WORK PORT
FOOT PEDAL PILOT VALVE (KAWASAKI)
AW017
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Tigercat T240B Track Loader
PILOT SYSTEM ELECTRICAL CIRCUIT
Refer to circuit diagram; The pilot shut off valve solenoid is not energized
until the armrest is down and the pilot reset switch is pushed. Wire 33
connects the armrest switch to the pilot shut off valve solenoid. Wire 95
connects the pilot reset switch to the armrest switch. When the pilot reset
switch is pushed ON with the armrest DOWN, the coil on the pilot shut off
relay is energized closing the circuit between wires 6 and 11 to energize the
coil in the pilot shut off valve. With the coil energized the valve spool in
the pilot shut off valve is shifted to supply oil to the pilot circuit. At the
same time wire 95A from the pilot reset switch is connected back to the pilot
shut off relay through a diode and thus latches the pilot shut off relay in
the energized position.
The diode in the circuit prevents the flow of current to the pilot shut off
valve solenoid when the armrest switch is open (armrest up). Even if the pilot
reset switch is held down, it will not operate. Whenever the arm is raised and
the switch opens, the voltage is interrupted to the pilot shut off relay coil
and the relay contacts open resulting in the pilot shut off valve returning to
the normally closed position. This prevents pilot oil from reaching the
controls.
PILOT SHUT OFF VALVE
Pilot system
·
· ·
PILOT MANIFOLD
·
GAUGE TEST PORT CONNECTION
PILOT RELIEF VALVE
240B-D22
PILOT RELIEF VALVE
SET PILOT PRESSURE
1. With hydraulic oil at operating temperature, connect a 0-1000 psi. gauge to the gauge test fitting on the pilot manifold.
2. Loosen locknut and turn adjusting screw all the way OUT on pilot relief valve, tighten locknut on adjusting screw.
3. Start engine and set throttle in FULL position.
4. Loosen locknut on pilot relief valve and turn adjusting screw IN until pressure gauge at pilot manifold reads 450 psi.
5. Stop engine, and remove pressure gauge.
·
PILOT MANIFOLD BODY
OUT
RELIEF VALVE CARTRIDGE
LOCKNUT
ADJUSTING SCREW
··
·
IN
240B-01
PILOT RELIEF VALVE
Tigercat T240B Track Loader
CAB TILT CIRCUIT One cylinder is used to tilt the cab forward or backwards.
Operating oil is supplied from the pilot pump to the inlet section of the cab
tilt control
·
CONTROL LEVER
Pilot system
RELIEF VALVE
· ··
WORK PORT ‘B’
·
240T2-028A
CAB TILT COUNTERBALANCE VALVES
ENGINE START SWITCH
·
WORK PORT ‘A’
T240B-004
CAB TILT VALVE
valve. A relief valve is installed in the inlet section of the tilt control
valve to protect the circuit components from abnormally high pressure spikes.
A counterbalance valve is installed in the tilt circuit on the tilt cylinder.
The pilot operated counterbalance valve ensures that the cylinders will remain
in any extended supporting position should a problem occur with the hydraulic
system such as a leaking or broken hose. The cracking pressure for each of the
two valve cartridges is pre-set to 3000 psi.
During normal machine operating conditions the pilot oil from the pilot pump
passes through the “open center” spool section of the cab tilt valve to supply
the pilot system.
When the lever on the cab tilt valve is pulled forward to tilt the cab, oil is
directed from the pilot pump via the control valve and pilot operated
counterbalance valve to the base end of the cab tilt cylinder to tilt the cab
forward. A 1/32″ dia. orifice is installed into each elbow at the cylinder
port connections to control the rate of speed at which the cab will tilt.
See CAB TILTING PROCEDURE in SECTION 2 of the OPERATOR’S MANUAL.
BATTERY
DISCONNECT SWITCH
·
BATTERY DISCONNECT AND ENGINE
240T-016
START SWITCHES
SET CAB TILT RELIEF VALVE
1. Park machine on level ground.
2. Ensure that the hydraulic oil is at operating temperature.
3. “Tee” into work port ‘A’ on the cab tilt control valve and install a 0 –
5000 psi pressure gauge at the “Tee”.
4. Loosen the locknut on the relief valve and turn the relief adjusting screw
out until spring pressure is relieved, then turn the adjusting screw one full
turn in.
5. Start the engine and put the throttle control to the FULL position.
6. With the cab tilt locking bolt still in place, push and hold the tilt
lever in the FORWARD position, check the gauge reading, if less than set
value, turn relief valve adjusting screw IN until 2000 psi is obtained on
gauge.
7. Tighten locknut on adjusting screw taking care not to turn the adjusting
screw.
8. Stop engine, remove pressure gauge and “Tee” fitting and reconnect hose to
work port ‘A’. Wipe up any excess oil from the gauge connection area.
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Tigercat T240B Track Loader
Pilot system
240T2-003
PILOT SYSTEM CIRCUIT DIAGRAM
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Tigercat T240B Track Loader
Pilot system
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Tigercat T240B Track Loader
ELECTRICAL, GAUGES & ALARMS
The T240B Loaders are monitored for proper operation by sensors located in the hydraulic system and on the engine. These sensors are connected to the PowerView Display and warning lights.
The operator may sound the warning horn at any time.
For operation of the PowerView Display and warning lights listed in the sensor chart below, refer to SECTION 2 of the OPERATOR’S MANUAL.
For replacement parts information, refer to GAUGES AND SENDERS in GROUP 600 of the PARTS CATALOG.
SENSOR FUNCTION
GAUGE RANGE
LIGHT
Engine oil pressure
0 – 100 psi YES
Engine coolant temp. 100°F – 280°F YES
Engine coolant level
NONE
YES
Hydraulic oil temp.
100°F – 240°F YES
Hydraulic oil level LOW SIGHT GLASS YES
Wait to start
NONE
YES
Water in fuel
NONE
YES
Safety Alert HORN
NONE
NONE
Electrical, Gauges and Alarms
INFORMATION RED Light comes ON below 15psi. STOP engine below 15 psi
181°F-203°F operating range (Cummins engine) RED light comes ON above 215°F
RED light comes ON when level in surge tank is LOW RED light comes ON above
205°F Red light comes ON indicates 13 gallons below FULL YELLOW light
turns ON when grid heater elements ON YELLOW light comes ON when fuel/water
separator needs to be drained Switch on control panel – press to sound horn
*NOTE:
Panel buzzer sounds when engine oil pressure too low OR engine coolant
temperature too high OR hydraulic oil temperature too high OR hydraulic oil
level too low.
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
CONTROL PANEL
PILOT MANIFOLD AND SOLENOIDS
·
·· ··
BACK-UP ALARM SWITCHES
··
JOYSTICKS
·
PILOT SHUT-OFF SWITCH
FUSE & RELAY ELECTRICAL BOX
ENGINE OIL PRESSURE SENDER (RED LIGHT)
BATTERY DISCONNECT SWITCH
ENGINE REMOTE
··
START
SWITCH
· ··
· ·
·
· ·
·
STARTER ALTERNATOR
SIGHT GAUGE/SWITCH HYDRAULIC OIL LEVEL (RED LIGHT)
SENDER – HYDRAULIC OIL TEMPERATURE (GAUGE)
SWITCH- HYDRAULIC OIL TEMPERATURE (RED LIGHT)
A/C
PRESSURE
SWITCH
··
· COOLANT
LEVEL PROBE
A/C COMPRESSOR
·· 12 VOLT BATTERIES (SHOWN MOVED OUT FROM UNDER ENGINE)
·
SENDER COOLANT TEMPERATURE (GAUGE)
SAFETY ALERT HORN (SWITCH ON CONTROL PANEL)
240T2-005
SENSORS AND ELECTRICAL COMPONENT LOCATIONS
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Tigercat T240B Track Loader
POWERVIEW DISPLAY MODULE
244-046 POWERVIEW DISPLAY MODULE The PowerView Display Module is the operator
interface with the electronic engine controls.The PowerView is a multifunction
tool that enables the operator to view various engine parameters and service
codes. The PowerView includes a graphical backlit LCD screen controlled via
menu selection. The display can show either a single parameter or a quadrant
display showing 4 parameters simultaneously. Diagnostic capabilities include
fault codes with text translation for the most common fault conditions. The
PowerView has four buttons used to navigate the display with ease. DISPLAY
PARAMETERS The following are some of the functions displayed by the PowerView
Display Module: Engine RPM Engine Hours Machine Hours System Voltage % Engine
Load at the current RPM Coolant Temperature Oil Pressure Fuel Economy Throttle
Position Engine Manifold Air Temperature Current Fuel Consumption Active
Service Codes Stored Service Codes from the engine Set Units for display
(English or Metric) Engine Configuration Parameters
Electrical, Gauges and Alarms
1
·
2
··
3
7
··
244-007
·· ·· · ·
4
5
6
POWERVIEW DISPLAY MODULE
COMPONENT DESCRIPTION
1. Amber Warning LED
2. Display
3. Menu Key
4. Left Arrow Key
5. Right Arrow Key
6. Enter Key
7. Red Shutdown LED
START-UP OPERATION
KEYPAD FUNCTIONS
MENU KEY – This key is pressed to enter or exit menu screens.
LEFT ARROW KEY – This key is pressed to scroll through the screen either
moving the parameter selection toward the left or down.
RIGHT ARROW KEY- This key is pressed to scroll through the screen either
moving the parameter selection toward the right or up.
ENTER KEY – This key is pressed to select the parameter that is highlighted on
the screen.
Refer to manufactures Operations Manual (supplied with the machine) for
detailed information.
When power is first applied to the PowerView, the “Logo Screen” will be
displayed, the “Wait to Start” message will be displayed. Once the “Wait to
Start” message is no longer displayed the operator may start the engine. When
the engine has started the display will show the single engine parameter
display.
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Tigercat T240B Track Loader
244-007 SINGLE PARAMETER DISPLAY MAIN MENU NAVIGATION 1. Starting at the
single or four engine parameter
display, depress the “Menu Button”.
244-047
2. The first seven items of the “Main Menu” will be displayed.
3. Depressing the “Arrow Buttons” will scroll through the menu selections.
4. Pressing the right arrow button will scroll down to reveal the last items
of “Main Menu” screen highlighting the next item down.
5. Use the arrow buttons to scroll to the desired menu item or press the
“Menu Button” to exit the Main menu and return to the engine parameter
display.
FAULTS AND WARNINGS During normal operation the single or four parameter
screen will be displayed. When the PowerView receives a fault code from an
engine control unit the single or four parameter screen will be replaced with
the “Active Fault Codes” message. To acknowledge and “Hide” the fault and
return to the single or four parameter display press the “Enter Button”. The
display will return to the single or four parameter screen. Indicates
Auxiliary Gage Fault. Indicates Fault Warning Indicates Derate or Shutdown
Condition Fault Pressing the “Enter Button” will redisplay the hidden fault.
Pressing the “Enter Button” once again will hide the fault and return the
screen to the single or four parameter display. NOTE: The fault can only be
cleared by correcting the cause of the fault condition.
Electrical, Gauges and Alarms
Some of the display and warning functions are:
LOW ENGINE OIL PRESSURE – RED LED
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.
ENGINE COOLANT TEMP. – RED LED
This light will come ON when the engine coolant temperature rises above 215°F
If this light comes ON stop engine and determine cause. Do not continue to
operate machine.
TACHOMETER
This display indicates the RPM. of the engine.
HOUR METER
There are two options available for displaying hours:
TOTAL ENGINE HOURS – displays total hours the engine has run as provided by
the engine computer.
MACHINE HOURS – displays the total hours the engine has run as calculated by
the display module.
ENGINE OIL PRESSURE
Oil pressure must be greater than 15 psi at all times. If the oil pressure
drops below 15 psi, stop the engine and determine cause. Check engine oil
pressure every time the engine is started.
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.
ENGINE COOLANT TEMP.
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.
VOLTAGE DISPLAY
Normal operating range is between 12-13.5 volts. A reading in excess of 15
volts indicates a possible faulty voltage regulator. A reading of less than 12
Volts indicates a possible faulty battery or alternator.
Refer to manufactures Operations Manual (supplied with the machine) for
detailed information.
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
DEFROSTER FAN
CB RADIO DOME LIGHT
GAUGES AND WARNING LIGHT PANEL
·
·
·
DIAGNOSTIC CONNECTOR
INSTRUMENT PANEL
··
·
·
FUSE AND RELAY PANEL (SEE DETAILS ON PAGE 6.8)
·
ELECTRICAL CONNECTORS (SEE INSTRUMENT PANEL WIRING DIAGRAM ON PAGE 6.9)
CAB WIRING AND ELECTRICAL COMPONENT LOCATIONS
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Tigercat T240B Track Loader
GAUGES AND WARNING LIGHTS
1
2
·
·
Electrical, Gauges and Alarms
3
45 6 7
89
10
·
·
· ···
··
240T-005
GAUGES AND WARNING LIGHTS
Component description 1. Windshield Wiper Switch 2. PowerView Display Module 3. Hydraulic Oil Temperature Gauge 4. Low Hydraulic Oil Light – Red 5. Hydraulic Oil Temperature Light – Red
6. Bulb Test Switch 7. Wait To Start Light – Yellow 8. Water In Fuel Light – Yellow 9. Low Coolant Light – Red 10. Not Used
240T-005
REAR VIEW OF GAUGES AND WARNING LIGHT PANEL
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240T-007
FUSE AND RELAY PANEL
21215B
FUSE AND RELAY PANEL
FUSE AND RELAY PANEL
The fuse panel is located inside 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.
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240T2-004
INSTRUMENT PANEL WIRING DIAGRAM
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240B-035
240B-036
MAIN FUSE AND RELAY ELECTRICAL BOX
FUSES AND RELAYS – ELECTRICAL BOX This Main Fuse and Relay electrical box is
located in the engine compartment.
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240B-011(23825B)
ELECTRICAL BOX WIRING DIAGRAM
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240B-007
REFER TO COLOUR CODE CHART IN THIS SECTION
ELECTRICAL SCHEMATIC DIAGRAM (SHEET 1)
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
240B-008
REFER TO COLOUR CODE CHART IN THIS SECTION
ELECTRICAL SCHEMATIC DIAGRAM (SHEET 2)
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Tigercat T240B Track Loader
Electrical, Gauges and Alarms
REFER TO COLOUR CODE CHART IN THIS SECTION
240B-009
ELECTRICAL SCHEMATIC DIAGRAM (SHEET 3)
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Tigercat T240B Track Loader
SECTION 7 – ENGINE START AND STOP
CONTENTS – SECTION 7
AUGUST, 2006
CIRCUIT DESCRIPTION ……………………………………………………………………. 7.2
ENGINE START CIRCUIT ………………………………………………………………….. 7.2
START CIRCUIT DIAGRAMS ……………………………………………………………… 7.3
Tigercat T240B Track Loader
ENGINE START CIRCUIT
For detailed engine information, refer to the engine manufacturer’s manual.
For engine starting and stopping procedures refer to STARTING ENGINE and
STOPPING ENGINE in SECTION 2 of the OPERATOR’S MANUAL. For correct engine
speeds, refer to THROTTLE CONTROL in SECTION 2 of the OPERATOR’S MANUAL.
To start engine; Turn battery disconnect switch to the ON position. Turn
ignition key to the START position and releasing it to the RUN position after
the engine starts.
CIRCUIT DESCRIPTION
With the battery disconnect switch ON, current is supplied the start solenoid
contact, the positive connection on the alternator and the BATTERY contact of
the key switch (ignition switch).
When the key switch is turned to the START position, the BATTERY contact is
connected to the RELAY and START contacts. Current (voltage) then flows
through wire (16) to energize the coils of the start solenoid relay. The start
solenoid relay contacts also close and current flows from the alternator + RED
wire (1) through wire (12) to the starter solenoid coil to close the contacts
and operate the start motor to start the engine.
In order to operate the machine functions after starting the engine, the arm
rest must be in the latched DOWN position and the PILOT RESET button pushed.
This will energize the pilot shut off relay, close the contacts and allow
current to flow through wires (6) and (11) to energize the pilot shut off
solenoid valve on the pilot manifold. After the PILOT RESET button is released
current will continue to flow through wire (95) and the diode to latch the
pilot shut off relay in the energized position and allow current to flow
through wires (6) and (11) to the pilot shut off solenoid valve.
For additional information on the PILOT SYSTEM refer to SECTION 5 in THIS
SERVICE MANUAL.
Engine start and stop
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Tigercat T240B Track Loader
Engine start and stop
240B-012
START CIRCUIT – AT REST
Tigercat T240B Track Loader
Engine start and stop
240B-013
START CIRCUIT – AT REST
BATTERY DISCONNECT SWITCH – ON
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Tigercat T240B Track Loader
Engine start and stop
240B-014
START CIRCUIT – START
IGNITION KEY – START POSITION
Tigercat T240B Track Loader
Engine start and stop
240B-015
START CIRCUIT – RUN
IGNITION KEY – RUN POSITION
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Tigercat T240B Track Loader
Engine start and stop
240B-016
START CIRCUIT – RUN
IGNITION KEY – RUN POSITION PILOT RESET SWITCH – HELD ON ARM REST DOWN/ARM
REST SWITCH – ON
Tigercat T240B Track Loader
Engine start and stop
240B-017
START CIRCUIT – RUN
IGNITION KEY – RUN POSITION PILOT RESET SWITCH – RELEASED ARM REST DOWN/ARM
REST SWITCH – ON
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AUGUST, 2006
Tigercat T240B Track Loader
IMPORTANT TRACK DRIVE NOTES
NEW MACHINE
Before driving a new machine ensure that track sag is set correctly. Track sag
may be set less than specified for shipping purposes. The correct track sag
must be adjusted once a machine has been delivered to the job sight and
operating in the accumulated soil buildup in the undercarriage.
TRACK SAG
The track sag dimension is very important and should be checked regularly. A
50% increase in the life of the track assembly can be realized, particularly
in bushing O/D wear and ‘track pitch’ by maintaining the correct amount of
track sag. A track that is too tight will wear out significantly faster due to
increased tension in the chain. Refer to MEASURING TRACK SAG in THIS SECTION.
Track drive
UNDERSIDE OF TRACK GUARD
SAG DIMENSION
· ·
853ILL8
UPPER SURFACE OF TRACK SHOE
MEASURING SAG DIMENSION
STRAIGHT TRAVEL
If the machine does not travel straight, the right and left track speeds are
not set the same. Refer to TRACK SPEED SET-UP PROCEDURE in THIS SECTION.
Check the speed of each track and follow the setup procedures closely to
obtain straight travel.
UNDERCARRIAGE
·
UPPER ROLLERS ROTARY MANIFOLD
· ·
·
IDLER ASSEMBLY
UNDERCARRIAGE LOWER HINGED ACCESS COVER
·
·
INSPECTION COVERS
··
LOWER
·
ROLLERS
240T-13
DRIVE MOTOR
·
·
TRACK DRIVE
GEARBOX
·
DRIVE SPROCKET
TRACK ACCESS COVER
TRACK DRIVE ASSEMBLY
·
TRACK ASSEMBLY
Tigercat T240B Track Loader TRACK DRIVE COMPONENTS
HYDRAULIC PUMPS
LEFT TRACK “STICK” PUMP
RIGHT TRACK “HOIST” PUMP
SWING PUMP
· ··
·
BELL HOUSING
278-3A
GEAR PUMP
The hydraulic pumps used on the T240B track loader are fixed displacement gear pumps.
The track drive circuit utilizes two of the three gear pumps to supply hydraulic oil to both the left and right track drive motors via a valve section in each of the two boom valves.
For a more detailed description of the triple gear pump, refer to SECTION 12 in THIS SERVICE MANUAL.
Track drive
1
·
5
·
TANK PORT
·
3
·
·
4
8
· ·
2
WORK PORT
·
·
PRESSURE PORT
WORK PORT
AW017
FOOT PEDAL PILOT VALVE
FOOT PEDAL CONTROL VALVE
The drive function is controlled by two center foot pedal valves which send proportional pilot signals to the left and right track drive spool sections in the “hoist” and “stick” valves which supply oil to the track drive motors.
For a detailed description of the foot pedal control valves, refer to SECTION 5 in THIS MANUAL.
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Tigercat T240B Track Loader
RELIEF VALVE PORT ‘A’
SEAL GROOVES
A
B
·
Track drive
RELIEF VALVE PORT ‘B’
SPOOL
CENTERING
·
SPRINGS
·
·
·
· ·
·
·
PILOT END CAP
SPOOL TANK PASSAGE
AT047IL2
·
·
·
·
·
PARALLEL PASSAGE
LOAD CHECK VALVE
THRU’ NEUTRAL PASSAGE
WORK PORT BRIDGE
CROSS SECTION OF SPOOL SECTIONS
TANK PASSAGE
·
PILOT END CAP
TRACK CONTROL VALVES
The right track forward and reverse function is controlled by one of three
spool sections in the “hoist” valve and the left track forward and reverse
function is controlled by one of three spool sections in the “stick” valve.
The control valves are located in the upper frame below the floor plates
inside the valve compartment.
For a detailed description of the “hoist” and “stick” control valves, refer to SECTION 12 in THIS MANUAL.
RIGHT TRACK ‘REVERSE’ PORT RELIEF (TURN IN)
MAIN RELIEF (3000 PSI)
LEFT TRACK ‘FORWARD’ PORT RELIEF (TURN IN)
MAIN RELIEF (3000 PSI)
OUTLET SECTION
· ·
OUTLET SECTION
·
·
·
·
SLASHER
UP STICK DOWN
FORWARD
LEFT TRACK
UP HOIST DOWN GRAPPLE OPEN/ CLOSE
REVERSE
RIGHT TRACK
·
FORWARD
·
·
GAUGE
·
TEST PORT
AT047IL
INLET SECTION
RIGHT TRACK ‘FORWARD’ PORT RELIEF (TURN IN)
LEFT TRACK ‘REVERSE’ PORT RELIEF (TURN IN)
TRACK DRIVE CONTROL VALVES
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REVERSE
SPARE
·
·
GAUGE TEST PORT
INLET SECTION
Tigercat T240B Track Loader
TRACK DRIVE ENABLE
· · TRAVEL,
HIGH/LOW
230B-04 PILOT MANIFOLD ASSEMBLY
TRAVEL AND DRIVE ENABLE SOLENOID VALVES
Pilot oil flows to both track drive foot pedals via the track drive enable
solenoid valve located on the pilot manifold assembly. A track drive switch in
the operator’s cab when in the ON position energizes this solenoid valve and
allows pilot oil to flow to the ‘P’ port on the foot pedal control valves.
When the switch is in the ‘OFF’ position, the valve is de-energized and pilot
oil is blocked from reaching the foot pedal control valves.
A travel high/low solenoid valve located next to the drive enable solenoid
valve on the pilot manifold assembly controls the flow of pilot oil to the
drive speed change valve in both track drive motors (port ‘Z’). A track speed
switch in the operator’s cab when in the “LOW” position energizes this
solenoid valve and allows pilot oil to shift the spool in the drive speed
change valve and place the motor at maximum displacement (slower speed). When
the switch is in the “HIGH” position, the solenoid valve is de-energized
preventing pilot oil from reaching the drive speed change valve in the motor
which places the motor at minimum displacement (higher speed).
Track drive
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Tigercat T240B Track Loader
Track drive
TRACK DRIVE HYDRAULIC CIRCUIT DESCRIPTION
The power is transmitted to the tracks by a variable displacement piston motor
through a triple reduction planetary gearbox on each track frame. The gearbox
has an integral spring apply, hydraulicrelease, multi-disc brake which is
automatically released whenever the drive system is pressurized.
In order to control the vehicle movement in situations where the vehicle may
roll down a grade, each motor is equipped with a counterbalance valve. These
valves have a spool valve which controls the flow of oil out of the motor, in
the motor schematic diagram it is shown in the centre, closed position.
LEFT TRACK “STICK” PUMP
RIGHT TRACK “HOIST” PUMP
SWING PUMP
· ··
·
BELL HOUSING
278-3A
GEAR PUMP
CIRCUIT DESCRIPTION
The types of pumps used on the T240B track loader are fixed displacement triple gear pumps.
240T2- 015
TRACK DRIVE MOTOR SCHEMATIC
The valve will remain in the closed position as long as there is no oil
pressure in the line from the track control valve. When the track control
valve spool is shifted and oil flows to the motor, a check valve in the
counterbalance valve (G) opens and oil pressure builds up in the motor
pistons.
The track drive circuit utilizes the first and second gear housings from the shaft end of these pumps to supply hydraulic oil flow to the left and right hydraulic track motor ‘A’ and ‘B’ ports via spool sections in the “stick” and “hoist” control valves.Two foot pedal control valves in the cab when operated in the FORWARD or REVERSE direction direct pilot oil to each end of the track spool sections in each of the “stick” and “hoist” control valves. A drive enable solenoid valve on the pilot manifold assembly controlled by a DRIVE ON/ OFF switch in the cab, controls the supply of pilot oil to the drive foot pedals. With the switch ON and the foot pedals depressed, the track spools in the “stick” and “hoist” control valves will shift directing oil from the pumps to the track drive motors. Return oil from the motors is directed back through the spool sections, to the outlet section, through the dual head return oil filter and back to tank.
The motor cannot move until the oil pressure shifts the counterbalance spool to permit the oil on the low pressure side of the motor to flow back through the counterbalance valve to the track control valve and then to tank.
The hydraulic motor is equipped internally with a drive speed change valve which is controlled by a switch in the cab (TRACK DRIVE HIGH/LOW) and a solenoid operated control valve on the pilot manifold assembly. For further information refer to TRAVEL AND DRIVE ENABLE SOLENOID VALVES in THIS SECTION.
Tigercat T240B Track Loader
PLANETARY TRACK DRIVE GEARBOX
TRACK
·
SPROCKET
·
·
Track drive
·
LOWER FRAME
TRACK DRIVE MOTOR (AQ019 SHOWN)
·
BK004-822
BRAKE ASSEMBLY
TRACK DRIVE MOTOR AND GEARBOX ASSEMBLY
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Tigercat T240B Track Loader
Track drive
DRIVE MOTOR DESCRIPTION The drive motor is a variable displacement swashplate
design. The motor is interchangeable from side to side.
The motor rotating group consists of a cylinder block
(1) with nine pistons (2) and an output shaft (3) that is splined to the
cylinder block.
Supply oil from the drive control valve enters the motor through the cover (4)
to the pistons. During operation, high pressure supply oil enters the
SLIPPER
6 SWASHPLATE
5
SEAL
RETAINER
BALL GUIDE
SPACER
RETAINING RING
···
·
·· ·
·
··
SHAFT 3
·
PISTON 2
CYLINDER BLOCK
1 PIN
· ·· ·
·
·
·
·
·
·
MAXIMUM DISPLACEMENT PISTON 8 9 MINIMUM
DISPLACEMENT ADJUSTMENT STOP
SHIMS
4 COVER
10 MAXIMUM DISPLACEMENT ADJUSTMENT STOP
WEAR SLEEVE
BEARING SHELL
AQ019-2 SPRING
CROSS SECTION OF DRIVE MOTOR
7
MINIMUM DISPLACEMENT
PISTON
BEGIN OF REGULATION ADJUSTMENT
MINIMUM DISPLACEMENT ADJUSTMENT STOP
9
11
CROSSOVER RELIEF VALVES
··
4 COVER
·
··
‘B’ PORT
· ·
PRESSURE PORTS
‘A’ PORT
PRESSURE
REGULATOR
VALVE
BLOCK
MAXIMUM
10
DISPLACEMENT
ADJUSTMENT STOP
AQ019-1
·
COUNTERBALANCE VALVE
DRIVE MOTOR FRONT COVER
Tigercat T240B Track Loader
piston bores in the cylinder block (1). This forces the pistons against an
angled swashplate (5). Piston sliding action causes the rotating group to
turn. The cylinder block is splined to the output shaft (3) which causes the
output shaft to turn. During the second half of the motor rotation, low
pressure is discharged as the pistons ride up to a higher position on the
swashplate. To reverse rotation, oil flow is reversed. During operation a
small amount of supply oil flows through the centre of each piston. This oil
lubricates the piston to slipper (6) joint and the slipper to swashplate area.
High pressure supply oil also flows through a tube to lubricate the swashplate
to bearing shell area. Normal leakage and lubrication oil aid in flushing and
cooling the motor during drive operation.
The swashplate (5) angle is changed by the minimum displacement piston (7) and
maximum displacement piston (8). When supply oil acts on the minimum
displacement piston (7), the motor runs at its highest speed. When supply oil
acts on the maximum displacement piston (8), the motor runs at its slowest
speed. The maximum displacement piston is larger than the minimum piston and
will hold the motor in maximum displacement when equal pressure acts on both
pistons.
Track drive
NOTE: Swashplate angle (motor displacement) is limited by the minimum and
maximum displacement pistons contacting the minimum (9) and maximum (10)
displacement adjustment stops. For minimum displacement, the maximum
displacement piston contacts the minimum displacement adjustment stop. For
maximum displacement, the minimum displacement piston contacts the maximum
displacement adjustment stop.
Refer to front cover illustration; The drive motor cover (4) consists of
several components to operate the drive functions.
The minimum displacement adjustment stop (9) limits the minimum angle the
swashplate can move. The maximum displacement adjustment stop (10) limits the
maximum angle the swashplate can move. The crossover relief valve(s) (11)
protects the motor circuit from pressure spikes.
BEGIN OF REGULATION ADJUSTMENT
PRESSURE REGULATOR VALVE BLOCK
·· ·
MINIMUM DISPLACEMENT ADJUSTMENT STOP ‘A’
·
·
CROSSOVER RELIEF VALVES ‘B’
COVER ‘L’
·
·
CYLINDER BLOCK ‘J’
PISTON ‘I’ SWASHPLATE ‘E’
BEARING SHELL ‘R’
PRESSURE REGULATOR VALVE BLOCK
·
MIN. AND MAX. ADJUSTING STOPS ‘A’ & ‘E’
‘B’ PORT
··
· ··
·
‘A’
‘A’ PORT
·
SHAFT ‘A’
·· ··
BRAKE RELEASE PRESSURE
REDUCING VALVE ADJUSTMENT
MAXIMUM
DISPLACEMENT ADJUSTMENT STOP ‘E’
DRIVE MOTOR
AQ019
FRONT COVER (AQ019)
· ‘A’
SLIPPER ‘F’
TUBE
·
COUNTERBALANCE VALVE
CROSS SECTION ‘A’ ‘A’ DRIVE MOTOR (AQ019)
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PRESSURE PORTS ‘A’, ‘B’
Tigercat T240B Track Loader
The drive motor may be operated in two ranges;
MAXIMUM DISPLACEMENT = 105cc/rev. MINIMUM DISPLACEMENT = app. 50cc/rev.
These two ranges are controlled by a solenoid pilot valve on the pilot
manifold which is operated by the TRACK (LOW/DRIVE) switch in the cab. In the
LOW position the solenoid on the pilot valve is energized and the motor is in
its maximum displacement mode which will give the slowest speed and maximum
tractive effort.
For faster travelling modes the TRACK (LOW/ DRIVE) switch can be put in the
DRIVE position and the motor will be in its minimum displacement position
which will give the fastest speed. When in this high speed mode the motor will
automatically increase motor displacement in the event that a high load is
encountered, e.g. a short grade or obstacle. This increase in motor
displacement is controlled by the drive speed change valve. This valve
controls the hydraulic pressure signal to the maximum displacement piston. The
piston increases motor displacement as the pressure rises above the drive
speed change valve setting.
Track drive
240T2- 015
TRACK DRIVE MOTOR SCHEMATIC
BEGIN OF REGULATION ADJUSTMENT
PRESSURE REGULATOR VALVE BLOCK
·· ·
MINIMUM DISPLACEMENT ADJUSTMENT STOP ‘A’
·
·
CROSSOVER RELIEF VALVES ‘B’
COVER ‘L’
·
·
CYLINDER BLOCK ‘J’
PISTON ‘I’ SWASHPLATE ‘E’
BEARING SHELL ‘R’
PRESSURE REGULATOR VALVE BLOCK
·
MIN. AND MAX. ADJUSTING STOPS ‘A’ & ‘E’
‘B’ PORT
··
· ··
·
‘A’
‘A’ PORT
·
SHAFT ‘A’
·· ··
BRAKE RELEASE PRESSURE
REDUCING VALVE ADJUSTMENT
MAXIMUM
DISPLACEMENT ADJUSTMENT STOP ‘E’
DRIVE MOTOR
AQ019
FRONT COVER (AQ019)
· ‘A’
SLIPPER ‘F’
TUBE
·
COUNTERBALANCE VALVE
CROSS SECTION ‘A’ ‘A’ DRIVE MOTOR (AQ019)
PRESSURE PORTS ‘A’, ‘B’
Tigercat T240B Track Loader
Track drive
240T2-011
TRACK DRIVE CIRCUIT DIAGRAM
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Tigercat T240B Track Loader
DRIVE MOTOR START-UP PROCEDURE
IMPORTANT: The minimum displacement adjusting screws on the track drive motors
must be turned in 2 full turns before running the track. The preset speed of a
new motor is too fast and the motor will immediately fail if this adjustment
is not performed.
IMPORTANT: The drive motor will be damaged if is not filled with oil before
operating the drive function. This procedure must be performed whenever a new
drive motor or drive pump is installed or whenever oil has been drained from
the motor.
1. Disconnect drive motor drain line on top of motor.
2. Install plug in line to minimize loss of oil.
3. Remove port adapter from motor drain port.
4. Fill motor with oil through the drain port. Add oil slowly until level is
to the top of drain port.
5. Re-connect drain line.
6. Run each drive motor slowly with track off the ground for three track
revolutions to remove air from the drive circuit.
822-D61
Track drive
DRAIN LINE
· ‘U’ PORT DRAIN CONNECTION
GAUGE
TEST
PORT ‘Y1’
·
·
DRIVE MOTOR TOP VIEW
SYSTEM PRESSURE PORT ‘A’
SYSTEM PRESSURE PORT ‘B’
COUNTERBALANCE VALVE
822-D62
GAUGE TEST PORT Y1
MAXIMUM DISPLACEMENT ADJUSTMENT STOP 6mm ALLEN KEY 19mm WRENCH
MINIMUM DISPLACEMENT ADJUSTMENT STOP 6mm ALLEN KEY 19mm WRENCH
PRESSURE REGULATOR VALVE BLOCK
· ·
·
·
·
‘B’ SIDE
‘A’ SIDE
BEGIN OF
REGULATION ADJUSTING SCREW
·
CROSSOVER RELIEF VALVES
5mm ALLEN KEY 17mm WRENCH
·
6mm WRENCH 13mm WRENCH
·
‘L’ PORT DRAIN
·
CONNECTION
(FOR L.H. SIDE)
DRIVE MOTOR (AQ019) – R.H. SIDE SHOWN
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Tigercat T240B Track Loader
CAUTION
Use caution when in the cab as a slight touch of the controls can cause sudden
rotation of the upper frame and booms or movement of the tracks
CAUTION
Be aware of other personnel in the area. Operator is responsible for the safe
operation of the machine.
WARNING
Ensure that no one is standing near the grapple during this procedure.
IMPORTANT
Avoid blowing oil over relief for longer than five seconds, as this will cause
excessive heating of the hydraulic fluid.
LEFT TRACK RELIEF VALVE SETTINGS
Left track/”Stick” valve main relief setting ……….. 3000 psi Left track port
relief setting ……………………….. Turn in Fully 1. Park machine on level ground. 2.
Ensure hydraulic oil is at operating
temperature. 3. Remove final drive inspection covers. 4. Disconnect brake
release lines at brake port
on final drive gearboxes. Plug hoses with size 06 JIC plug and cap port
adapters on gearbox.
Track drive
10. Slowly depress the L.H. drive foot pedal to ensure brake holds. While
holding the LEFT drive foot pedal in the FORWARD position, check gauge
pressure reading.
11. If less than set value, loosen locknut on stick main relief valve and
turn relief valve adjusting screw in or out until 3000 psi. is obtained on
gauge.
12. Tighten locknut on the main relief adjusting screw taking care not to
turn the adjusting screw. Verify setting.
RIGHT TRACK RELIEF VALVE SETTINGS
Right track/”Hoist” valve main relief setting ……. 3000 psi
Right track port relief setting …………………….. Turn in Fully
Follow pressure setting procedure for LEFT TRACK RELIEF VALVE SETTINGS – use
“hoist” control valve.
13. Stop engine, reconnect the brake release line(s) at the brake port on the
track drive gearbox
14. Replace inspection covers.
15. Remove pressure gauge and wipe up any excess oil from test port area.
SET LEFT TRACK MAIN RELIEF VALVE 5. Loosen the locknut on both port relief
valve
adjusting screws for the TRACK FORWARD/ REVERSE spool section of the “stick”
valve and check that the adjusting screws are turned in fully. Tighten
locknuts.
6. Connect a 0-5000 psi pressure gauge to the “stick” control valve test port
on the inlet section of the valve.
7. Start engine and place throttle control to full.
8. Set pilot pressure to 450 psi at full throttle.
9. Place engine throttle control to full throttle.
Tigercat T240B Track Loader
SET BEGIN OF REGULATION (DRIVE SPEED CHANGE VALVE)
Note: Begin of regulation adjustment is made with both track drive main relief
valves set at 2500 psi.
1. Ensure hydraulic oil is at operating temperature.
2. Remove both LEFT and RIGHT drive motor inspection covers.
3. Disconnect LEFT and RIGHT brake line at port on final drive gearbox. Plug
hose with size 06 JIC plug and cap port adapter on gearbox.
4. Install a 0 to 5,000 psi gauge on drive motor gauge test ports ‘Y1’, size
04JIC quick connect.
5. Start engine and set throttle to FULL …
6. Lower left arm rest and depress the pilot reset switch to activate the
pilot system.
7. Place HIGH/LOW switch to HIGH position.
Track drive
8. Activate LEFT track drive foot pedal in both FORWARD and REVERSE
directions to ensure that the track does not move. At this time ADJUST BOTH
TRACK DRIVE MAIN RELIEF VALVES TO 2500 psi.
9. With the aid of an assistant, activate LEFT track drive foot pedal in the
FORWARD direction and check pressure reading on gauge at motor gauge test port
‘Y1’ it should show between 800 and 1,000 psi.
If adjustment is required, loosen locknut on begin of regulation adjusting
screw and turn screw in to increase pressure or out to decrease pressure.
Tighten locknut.
10. Repeat steps (4) through (9) for the right drive motor.
11. Reset track drive main releif valve pressure to 3000 psi.
12. Re-connect brake line(s) to both gearboxes.
13. Remove pressure gauge and wipe up any spills.
14. Replace both LEFT and RIGHT drive motor inspection covers.
SYSTEM PRESSURE PORT ‘A’
SYSTEM PRESSURE PORT ‘B’
COUNTERBALANCE VALVE
822-D62
GAUGE TEST PORT Y1
MAXIMUM DISPLACEMENT ADJUSTMENT STOP 6mm ALLEN KEY 19mm WRENCH
MINIMUM DISPLACEMENT ADJUSTMENT STOP 6mm ALLEN KEY 19mm WRENCH
PRESSURE REGULATOR VALVE BLOCK
· ·
·
·
·
CROSSOVER RELIEF VALVES 5mm ALLEN KEY 17mm WRENCH
‘B’ SIDE
·
‘A’ SIDE
BEGIN OF REGULATION ADJUSTING
SCREW
6mm WRENCH
13mm WRENCH
·
‘L’ PORT DRAIN
·
CONNECTION
(FOR L.H. SIDE)
DRIVE MOTOR (AQ019) – R.H. SIDE SHOWN
· ·
BRAKE RELEASE PRESSURE REDUCING VALVE ADJUSTMENT
Tigercat T240B Track Loader
TRACK DRIVE BRAKE RELEASE PRESSURE
1. Ensure hydraulic oil is at operating temperature.
2. Remove both LEFT and RIGHT drive motor inspection covers.
3. Disconnect LEFT and RIGHT brake line at port on final drive gearbox.
Install a test hose and tee fitting between the brake lines and ports on final
drive gearboxes.
4. Install a 0 to 1,000 psi gauge on both tee fittings.
5. Start engine and set throttle to FULL …
6. Lower left arm rest and depress the pilot reset switch to activate the
pilot system.
7. With the aid of an assistant, activate LEFT track drive foot pedal in the
FORWARD direction and check brake pressure reading on gauge at brake line it
should show 500 psi.
If adjustment is required, loosen locknut on brake pressure reducing valve and
turn screw in to increase pressure or out to decrease pressure. Tighten
locknut.
8. Repeat step (7) for the right track drive brake pressure adjustment.
9. Set engine speed to low idle, shut engine off and remove test gauges,
hoses and fittings.
10. Reinstall LEFT and RIGHT brake line at port on final drive gearbox. Wipe
up any spilled oil.
11. Reinstall both LEFT and RIGHT drive motor inspection covers.
Track drive
822-D62
· BRAKE RELEASE PRESSURE REDUCING VALVE ADJUSTMENT
RIGHT TRACK DRIVE MOTOR
BRAKE RELEASE PRESSURE
REDUCING VALVE ADJUSTMENT
··
822-D60
LEFT TRACK DRIVE MOTOR
Tigercat T240B Track Loader
TRACK SPEED SET-UP PROCEDURE
IMPORTANT: · Ensure hydraulic oil is up to operating temperature.
1. Remove both left and right final drive inspection covers to access track
drive motors.
LEFT TRACK ADJUSTMENT
POSITION MACHINE:
2. Swing boom to LEFT side of machine.
3. Place grapple on solid ground and by forcing down with boom controls, lift
track clear of ground. (Hoist down and stick out)
Track drive
7. With an assistant depressing the LEFT TRACK drive pedal FORWARD, record
the track drive sprocket speed. A reading of 17 rpm is desired.
8. Turn the maximum displacement adjustment screw on the left drive motor IN
to speed up or OUT to slow down the final drive. Continue adjusting the motor
and checking the track drive sprocket speed until 17 rpm is obtained.
MINIMUM DISPLACEMENT ADJUSTING SCREW 6mm ALLEN KEY 19mm WRENCH
·
HARD SURFACE
SUPPORT BLOCK
·
·
822-D60
·
MAXIMUM
DISPLACEMENT
ADJUSTING SCREW
6mm ALLEN KEY 19mm WRENCH
LEFT TRACK DRIVE MOTOR
240T-17
LIFTING TRACK
4. Use blocks to firmly support track frame in raised position. DO NOT place
arms, legs or body under track while in the raised position.
SET LOW SPEED (motor maximum displacement)
NOTE: Turn the maximum displacement adjusting screw either IN (clockwise) to
speed up or OUT (counterclockwise) to slow down the final drive.
MAXIMUM DISPLACEMENT ADJUSTING SCREW
6mm ALLEN KEY 19mm WRENCH
·
MINIMUM
DISPLACEMENT
ADJUSTING SCREW
·
6mm ALLEN KEY
19mm WRENCH
822-D61
RIGHT TRACK DRIVE MOTOR
5. Set TRACK HIGH/LOW switch to LOW. 6. Set throttle to FULL.
SET HIGH SPEED (motor minimum displacement)
9. Turn HIGH/LOW switch to HIGH.
A TIMING MARK, VISIBLE FROM THE
CAB CAN ALSO BE PLACED ON THE TRACK
10. Set engine to full throttle.
11. With an assistant depressing the left track drive pedal forward record
the track drive sprocket speed. A reading of 28 rpm is desired.
ROTATION
12. Turn the minimum displacement adjustment screw on the left drive motor OUT to speed up or IN to slow down the final drive. Continue adjusting the motor and checking the track drive sprocket speed until 28 rpm is obtained.
TO RECORD TRACK SPEED, PLACE TIMING
MARKS ON TRACK FRAME AND GEARBOX HOUSING
IMPORTANT: DO NOT exceed 30 rpm since over speeding will damage the drive motor.
84-18
SET TRACK SPEED
Tigercat T240B Track Loader
RIGHT TRACK ADJUSTMENT
13. Lower the left track onto the ground, swing the boom around to the right
side of the machine and proceed to raise the right track clear of the ground.
14. Use blocks to firmly support track frame in raised position. DO NOT place
arms, legs or body under track while in the raised position.
15. Follow steps 5 through 12 from LEFT TRACK ADJUSTMENT.
16. Lower machine down onto the ground, stop the engine and replace the final
drive inspection covers.
SET STRAIGHT TRAVEL
Following completion of TRACK SPEED SETUP PROCEDURE, try driving machine in
both forward and reverse directions with the DRIVE/LOW’ switch in bothHIGH’
and `LOW’ positions.
If machine does not travel straight, the right and left track speeds are not
set the same, therefore the above set-up procedures need to be rechecked.
Track drive
SUMMERY OF PRESSURE SETTINGS
LEFT TRACK ADJUSTMENT · Park machine on level ground. · Ensure hydraulic oil
is at operating
temperature. · Remove final drive inspection covers. · Disconnect and plug
brake lines. · Turn TRACK FORWARD and REVERSE port
relief valves on “stick” valve fully in.. · Connect pressure gauge to “stick”
valve. · Start engine and place throttle control to full. · Set PILOT
PRESSURE. · Place throttle control to 1/4 throttle. · Set stick main relief. ·
Stop engine, re-connect brake lines. · Replace inspection covers.
RIGHT TRACK ADJUSTMENT Follow LEFT TRACK ADJUSTMENT procedure above but use
“hoist” control valve.
SUMMERY OF TRACK SPEED SET-UP PROCEDURE
· Park machine on level ground. · Ensure hydraulic oil is at operating
temperature. · Remove final drive inspection covers. · Raise LEFT track off
ground. · Set LEFT track low speed. · Set LEFT track high speed. · Raise RIGHT
track off ground. · Set RIGHT track low speed. · Set RIGHT track high speed. ·
Lower machine onto ground. · Set straight travel. · Replace inspection covers.
Tigercat T240B Track Loader
TRACK COMPONENTS
IMPORTANT: New machine: Before driving a new machine ensure that track sag is
set correctly. Track sag may be set less than specified for shipping purposes.
The correct track sag must be adjusted once a machine has been delivered to
the job sight and operating in the accumulated soil build-up in the
undercarriage.
TRACK SAG NOTE: The track sag dimension is very important and should be
checked regularly, 50% increase in the life of the track assembly can be
realized, particularly bushing O/D wear and track pitch by maintaining the
correct amount of track sag. A track that is too tight will wear out
significantly faster due to increased tension in the chain.
Track components operate under varying terrain conditions, most of which cause
excessive wear. Wear to one component can quickly spread to the rest of the
track assembly.
To ensure that the track components are always in good running order, a
periodic inspection should be made to ensure that components have not come
loose, that bolts are at the correct torque, that components are within the
specified wear limits (discussed further in this section) and where
applicable, check lubrication points.
For a guide on inspection, refer to the PERIODIC MAINTENANCE SCHEDULE in
SECTION 3 OF THIS MANUAL.
Track drive
HARD SURFACE
SUPPORT BLOCK
·
·
240T-17
LIFTING TRACK
MEASURING TRACK SAG
1. Swing boom to side of machine.
2. Place grapple on ground as shown and by forcing down with boom controls, lift track clear of ground.
3. Rotate track in forward and reverse several times. Stop the track while in reverse. Do not clean the track.
4. Stop engine.
5. Measure distance between top surface of track shoe at centre of lower surface of track frame.
UNDERSIDE OF TRACK GUARD
SAG DIMENSION
· ·
DRIVE SPROCKET
IDLER
·
·
240T-16
OPERATE MACHINE WITH GRAPPLE OVER IDLERS
OPERATING THE MACHINE
Whenever possible the machine should always be operated with the felling head over the IDLERS and not over the SPROCKETS.
Operating over the sprockets will result in overloading of the contact surfaces between the sprocket and the track bushings. Bushings could crack during sprocket impact.
UPPER SURFACE OF TRACK SHOE
853ILL8 MEASURING SAG DIMENSION
6. This dimension should be between 6″ and 8″ for normal operations.
NOTE: If track sag is less than specified, track chain wear will be
accelerated. If track sag is excessive, it is possible for the track to jump
off the sprocket.
Tigercat T240B Track Loader
IDLER ADJUSTING 4
·
CYLINDER
3
DO NOT REMOVE
·
··
·
CW001-2
CW001-3
12
TRACK ADJUSTMENT
TRACK SAG ADJUSTMENT
To tighten track, attach adjustment fitting adapter (3) onto valve body (1). Connect a grease gun to the grease fitting (2) on the adjustment fitting adapter (3). Add grease until track sag dimension is within recommended limits. Remove adjustment fitting adapter.
CAUTION: The grease is under very high pressure, DO NOT REMOVE the adjustment fitting valve body (1) from the idler adjusting cylinder (4).
To loosen track, slowly loosen valve body (1) until grease begins to escape via a relief passage in the valve body housing, grease will be seen escaping from around valve body threads. When track sag is correct, tighten valve body.
Track drive
TORQUING UNDERCARRIAGE BOLTS
It is important to check the torque values of the track shoe retaining bolts
and the bottom roller retaining bolts at the NEW MACHINE MAINTENANCE time
period (first 100 hours) and the EVERY 125 HOURS SCHEDULED MAINTENANCE time
period.
When installing new components, all traces of paint and dirt must be removed
from all mating surfaces including the contact area under the bolt head and
nut.
Both the bolt and the nut on the track shoes should be lightly lubricated with
SAE 30 oil and tightened using the Torque-turn method.
The torque-turn method involves torquing the bolt to an initial predetermined
value, plus an additional 1/3 turn (not the value shown in the torque charts).
This ensures a more accurate and consistent torquing of the bolts, with less
likelihood of the bolt/nut coming loose later.
When checking the torque values at the first 100 hours and every 125 hours
thereafter use the CHECKING TORQUE values listed in the following paragraphs.
If loose shoes or under torqued bolts are discovered during the FIRST 100 HOUR
check, they should be removed, surfaces cleaned, and reused using the torque-
turn method. If the shoe is not loose but a single bolt is low on torque,
loosen the bolt and re torque-turn.
If loose or under torqued bolts are discovered any time after the 100 HOUR
check, the bolts and nuts must be replaced with NEW ones, surfaces cleaned,
and re torque-turned.
TRACK SHOE RETAINING BOLTS
Track shoes must be fastened together applying the exact torque values shown
below and using the Torque-turn method described in TORQUING UNDER CARRIAGE
BOLTS earlier in this section.
TORQUE 1
TRACK COMPONENT TORQUE VALUES
https://cran1e1.m19anuals.com
Tigercat T240B Track Loader
Track shoe bolts and nuts are designed specifically for this purpose and
should not be substituted with standard off the shelf hardware.
Only bolts with grade ‘12.9’ or ‘170’ designation forged in the head are
approved.
When checking the torque values at the first 100 hours and every 125 hours
thereafter use the checking torque value.
Track shoe bolts ~ 3/4″ UNC
TORQUE-TURN ………… 220LBF/FT. + 1/3 TURN.
CHECKING TORQUE ………………….. 450 LBF/FT.
ROLLER RETAINING BOLTS
The rollers must be fastened to the lower frame applying the exact torque
values shown below.
When installing new rollers, apply “NEVER-SEEZ” to the bolt.
When checking the torque values at the first 100 hours and every 125 hours
thereafter use the torque value(s) shown below.
Roller bolts ~ 7/8″ UNC TORQUE …………………………………… 450 LBF/FT.
For a complete maintenance check Refer to the PREVENTIVE MAINTENANCE SCHEDULE
in SECTION 3 of this manual.
Track drive
BERC-9 BERC-10
SINGLE GROUSER DOUBLE GROUSER
TRIPLE GROUSER
BERC-1
GROUSER WEAR (HEIGHT)
WEAR LIMITS
TRACK SHOE GROUSER HEIGHT WEAR
WEAR LIMITS
New
75% wear 100% wear
Single 2.82″(716.2mm) … 1.37″ (348mm) …….. 0.93″ (236.2mm)
Double 1.37″(348mm) …… 0.71″ (180.3mm) ….. 0.43″ (109.2mm)
Triple 1.06″(269.2mm) … 0.51″ (129.5mm) ….. 0.36″ (91.4mm)
NOTE: Allowable wear for soft ground conditions is 100%. Allowable wear for rocky ground conditions is 75%.
BERC-2 TRACK LINK WEAR (HEIGHT)
TRACK LINK WEAR
WEAR LIMITS New link height …………………… 4.78″ (121.5mm) 50% wear …………………………..
4.60″ (116.8mm) 75% wear ………………………….. 4.48″ (113.8mm) 100% wear …………………………
4.34″ (110.2mm)
Tigercat T240B Track Loader
PIN AND BUSHING WEAR
To obtain the track internal wear, i.e., the wear between the pin and the
internal diameter of the bushing, measure the track pitch over four sections
of track (5 pins).
Track drive
BUSHING WEAR, OUTSIDE DIAMETER Use a calliper to measure the wear of the
bushing O.D. in three places.
BERC-3
MEASURING TRACK PITCH
To take this measurement,
1. Remove slack by placing a steel pin between sprocket and chain, then slowly move machine in reverse to tighten chain.
2. Measure pitch across two four link sections, except section on each side of the master pin, to find average chain wear.
INTERNAL PIN & BUSHING WEAR
EXTERNAL BUSHING WEAR
ROTATION
180°
TURN PIN &
BUSHING 180°
BERC-4 PIN/BUSHING INTERNAL WEAR NOTE: Wear to the pins and bushings only
occurs in a small localised area, to extend the life of these components, the
pins and bushings may be turned 180° or replaced provided other components are
within specified wear limits:
1. Track link wear is 75% or less.
2. Change in track pitch is 32.50:” (825.5mm) per link or less.
3. Bushing external wear less than 100% or 75% or less in rocky ground.
4. There is at least 0.008″ (0.2mm) press fit available between pin and
bushing and link.
WEAR LIMITS New length of four sections …………. 32″ (813.0mm) 75% worn
………………………………….. 32.37″(822.2mm) 100% worn ………………………………… 32.50″(825.5mm)
NOTE: Allowable wear in rocky ground is 75%
NOTE: These wear limits are to be used as a guide for when to turn the pins
and bushings. If pins and bushings are not to be turned, the chain can be run
past the 100% wear limit, until chain failure.
45°
45°
FORWARD
SIDE
VERTICAL
WEAR
WEAR
REVERSE SIDE WEAR
MEASURING BUSHING WEAR BERC-5
NOTE: Bushing outside diameter is measured at three places because of the forward and reverse travel of the machine and a vertical wear that takes place.
WEAR LIMITS New bushing O.D. …………………… 2.62″ (66.6mm) 75% worn ………………………………. 2.5″ (63.5mm) 100% worn …………………………….. 2.43″ (61.7mm) NOTE: Allowable wear in rocky ground is 75%
ROLLER WEAR
Measure the roller diameter on the tread contact surface with a large calliper
to obtain the worst wear condition.
BERC-6
MEASURING ROLLER WEAR
If accessibility to the rollers is impaired by guards, then concentrate on the front and rear rollers, these will be the most worn.
WEAR LIMITS, LARGER ROLLERS New roller. …………………………….. 8.26″ (210.0mm) 75% worn ……………………………… 7.64″ (194.0mm) 100% worn ……………………………. 7.36″ (187.0mm)
WEAR LIMITS, SMALLER & UPPER ROLLERS
New roller. …………………………….. 6.61″ (168.0mm) 75% worn ……………………………… 6.10″ (155.0mm) 100% worn ……………………………. 5.91″ (150.0mm)
Tigercat T240B Track Loader
IDLER WEAR
Measure the idler wheel side diameters (tread contact surface) at several
points to obtain the worst wear condition. Position a depth gauge or measuring
tape as close as possible toward the centre of the idler with the gauge flat
on the centre flange and parallel to the idler shaft.
BERC-7
MEASURING IDLER WEAR
WEAR LIMITS New idler dimension …………………. 0.85″(22.0mm) 100% wear ……………………………… 1.18″(30.0mm)
Track drive
AUGUST, 2006
Tigercat T240B Track Loader BOOM SYSTEM COMPONENTS
BOOM PUMP
The pump is bolted onto the bell housing and driven directly off the engine. To ensure optimum performance of the hydraulic system when operating the machine, the engine must always be set at FULL throttle.
·
BELL HOUSING
BOOM PUMPS
SWING PUMP
· ··
278-3A
GEAR PUMP
A gear pump consisting of three gear housing sections, all connected together internally supply hydraulic oil to all of the functions on the machine except the pilot system. The first two gear housings at the shaft end supply oil for the boom functions and the end gear housing supplies oil for the swing circuit.
DRIVEN (IDLER) GEAR
OUTLET
DRIVE GEAR
Boom functions
The operation of a typical external gear pump (so called because the gear
teeth are on the external surface of the hub) is shown in Figure gear1.
A gear pump carries oil from the inlet to the outlet in the spaces between
gear teeth. The pumping chamber is formed by the gears, the pump housing, and
side plates. One of the two gears, called the drive gear, will be connected to
the drive shaft. The other idler gear is driven by the drive gear.
JOYSTICK CONTROL VALVE
The hoist boom and stick boom functions are controlled by the left and right
joysticks which when operated send proportional pilot signals to the two boom
control valves which supply oil to the two boom cylinders.
For a detailed description of the joystick control valve refer to SECTION 5 in
THIS MANUAL.
BOOM CONTROL VALVES
The hoist boom and stick boom are each controlled by two spool sections
located in two separate identical control valves. Each control valve consists
of three pilot operated, op