This shop manual provides instructions for repairing D61EX and D61PX-12 excavators. It is divided into sections covering general information, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other topics like hydraulic and electrical diagrams. Safety precautions are emphasized throughout to avoid injury during repair work. Technicians should carefully follow the procedures in this manual to properly diagnose and service the excavators.
Komatsu D375A-5 Dozer Bulldozer Service Repair Manual S/N 18200 and upfudfjjjskjkmeme
This shop manual provides instructions for servicing a Komatsu D375A-5 excavator. It contains sections on general precautions, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other technical information. The manual is divided into chapters that cover specific components and systems. It is intended to help technicians safely and properly service the excavator by providing accurate technical information and specifying the correct procedures.
Komatsu d375 a 3 dozer bulldozer service repair manual sn 17501 and upfjsekkxszdmmem
This shop manual provides instructions for repairing and maintaining a Komatsu D375A-3 bulldozer. It begins with general safety precautions and preparations for work. It then details the machine's structure and functioning, testing and adjusting procedures, disassembly and assembly instructions, maintenance standards, and other technical information needed for repairs. The manual is divided into sections covering general information, safety, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other technical specifications. It is intended to help technicians properly understand and repair the machine.
Caterpillar cat 324 d l excavator (prefix tsn) service repair manual (tsn0000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a travel motor on excavator models 324D and 324D L. The disassembly procedure involves 28 steps to remove components from the travel motor including the head, springs, plates, seals, bearings, and housing cover. The assembly procedure instructs to install components in reverse order, noting that all seals and gaskets must be replaced and components cleaned before assembly. Proper tooling and torque specifications are listed for selected assembly steps.
Caterpillar cat 324 d l excavator (prefix trh) service repair manual (trh0000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a 324D LN excavator travel motor. It includes 28 steps for disassembly that remove components like the motor head, seals, plates, discs, bearings, and housing pieces. The 28-step assembly procedure reverses the disassembly process and includes notes on cleaning, marking parts, and using specialty tools.
Caterpillar cat 324 d l excavator (prefix t2d) service repair manual (t2d0000...fhhsjdkmem
The document provides instructions to disassemble a final drive. Key steps include:
1. Removing the cover and gears from the final drive housing.
2. Using tools to remove the carrier assembly and planetary gears.
3. Pressing the shafts out of the carrier assembly and disassembling it.
Caterpillar cat 324 d l excavator (prefix pyt) service repair manual (pyt0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the final drive of a 324D L Excavator. The multi-step process involves removing components such as gears, shafts, seals and housings. Cleanliness is emphasized. Tools including link brackets and seal installers are listed. Bearings are pressed into place and shim thickness is determined to set proper bearing preload. Seals are installed using a special tool. Anti-seize compound is applied to surfaces.
Caterpillar cat 324 d l excavator (prefix mnd) service repair manual (mnd0000...fhhsjdkmem
The document provides instructions for disassembling the final drive of a 324D excavator. It involves removing over 30 individual parts in a specific sequence, including the cover, gears, carrier assembly, planetary carrier, shafts and seals. Cleanliness is important to prevent dirt entering during disassembly. Tools including link brackets, eyebolts and retaining ring pliers are required. The procedure removes components step-by-step and identifies each part and subassembly that must be dismantled from the final drive.
Caterpillar cat 324 d l excavator (prefix sym) service repair manual (sym0000...fhhsjdkmem
This document provides disassembly instructions for the final drive of a 324D L and 324D LN excavator. The 31-step procedure includes removing the final drive housing, cover, gears, carriers, shafts, seals and other components. Special tools are required to remove retaining rings, pins and other fasteners. Cleanliness is important to prevent dirt from entering during disassembly. Weights of components are provided to assist with removal.
Komatsu D375A-5 Dozer Bulldozer Service Repair Manual S/N 18200 and upfudfjjjskjkmeme
This shop manual provides instructions for servicing a Komatsu D375A-5 excavator. It contains sections on general precautions, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other technical information. The manual is divided into chapters that cover specific components and systems. It is intended to help technicians safely and properly service the excavator by providing accurate technical information and specifying the correct procedures.
Komatsu d375 a 3 dozer bulldozer service repair manual sn 17501 and upfjsekkxszdmmem
This shop manual provides instructions for repairing and maintaining a Komatsu D375A-3 bulldozer. It begins with general safety precautions and preparations for work. It then details the machine's structure and functioning, testing and adjusting procedures, disassembly and assembly instructions, maintenance standards, and other technical information needed for repairs. The manual is divided into sections covering general information, safety, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other technical specifications. It is intended to help technicians properly understand and repair the machine.
Caterpillar cat 324 d l excavator (prefix tsn) service repair manual (tsn0000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a travel motor on excavator models 324D and 324D L. The disassembly procedure involves 28 steps to remove components from the travel motor including the head, springs, plates, seals, bearings, and housing cover. The assembly procedure instructs to install components in reverse order, noting that all seals and gaskets must be replaced and components cleaned before assembly. Proper tooling and torque specifications are listed for selected assembly steps.
Caterpillar cat 324 d l excavator (prefix trh) service repair manual (trh0000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a 324D LN excavator travel motor. It includes 28 steps for disassembly that remove components like the motor head, seals, plates, discs, bearings, and housing pieces. The 28-step assembly procedure reverses the disassembly process and includes notes on cleaning, marking parts, and using specialty tools.
Caterpillar cat 324 d l excavator (prefix t2d) service repair manual (t2d0000...fhhsjdkmem
The document provides instructions to disassemble a final drive. Key steps include:
1. Removing the cover and gears from the final drive housing.
2. Using tools to remove the carrier assembly and planetary gears.
3. Pressing the shafts out of the carrier assembly and disassembling it.
Caterpillar cat 324 d l excavator (prefix pyt) service repair manual (pyt0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the final drive of a 324D L Excavator. The multi-step process involves removing components such as gears, shafts, seals and housings. Cleanliness is emphasized. Tools including link brackets and seal installers are listed. Bearings are pressed into place and shim thickness is determined to set proper bearing preload. Seals are installed using a special tool. Anti-seize compound is applied to surfaces.
Caterpillar cat 324 d l excavator (prefix mnd) service repair manual (mnd0000...fhhsjdkmem
The document provides instructions for disassembling the final drive of a 324D excavator. It involves removing over 30 individual parts in a specific sequence, including the cover, gears, carrier assembly, planetary carrier, shafts and seals. Cleanliness is important to prevent dirt entering during disassembly. Tools including link brackets, eyebolts and retaining ring pliers are required. The procedure removes components step-by-step and identifies each part and subassembly that must be dismantled from the final drive.
Caterpillar cat 324 d l excavator (prefix sym) service repair manual (sym0000...fhhsjdkmem
This document provides disassembly instructions for the final drive of a 324D L and 324D LN excavator. The 31-step procedure includes removing the final drive housing, cover, gears, carriers, shafts, seals and other components. Special tools are required to remove retaining rings, pins and other fasteners. Cleanliness is important to prevent dirt from entering during disassembly. Weights of components are provided to assist with removal.
Caterpillar cat 324 d l excavator (prefix lab) service repair manual (lab0000...fhhsjdkmem
This document provides the disassembly procedure for the final drive of a 324D L Excavator. It begins by removing the final drive from the machine and securing it to a repair stand. It then describes removing over 30 individual parts from the final drive including gears, shafts, carriers, seals, and housings through the use of various tools like retaining ring pliers, link brackets, and eyebolts. The procedure concludes by describing how to remove the final drive sprocket if necessary.
Crown wf3000 series forklift service repair manualfhhsjdkmem
1. The document is a service manual for the WF3000 series forklift trucks that provides information on maintenance, repair, troubleshooting, and specifications for the trucks.
2. It includes sections covering lubrication and adjustments, hydraulics, drive unit, electrics, brakes, steering, mast, cylinders, and electrical diagrams.
3. The manual provides maintenance technicians with the information needed to service the trucks, such as recommended lubricants, component locations, repair instructions, and electrical schematics.
Crown we2000 series forklift service repair manualfhhsjdkmem
This document is a service and parts manual for a series of lift trucks. It contains sections on maintenance, lubrication, adjustments, repairs, and inspections for various components of the trucks including the hydraulic system, drive unit, electrical systems, brakes, steering, mast, cylinders, and forks. The manual provides maintenance schedules, diagrams, part numbers, and repair instructions.
Crown wave50 work assit vehicle service repair manualfhhsjdkmem
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Crown st3000 series forklift service repair manualfhhsjdkmem
This document provides a service manual for the ST3000 series truck. It contains sections on safety, introduction, lubrication and adjustment, hydraulics, drive unit, and electrics. The manual includes information on component access, recommended lubricants, maintenance schedules, hydraulic and electrical system diagrams, and instructions for repairs and replacements of parts like pumps, motors, and gears.
Crown sc3200 series forklift service repair manualfhhsjdkmem
1. The document provides maintenance instructions for the SC3200 series truck. It details safety procedures, component descriptions, lubrication and inspection schedules, repair procedures, and torque specifications.
2. Sections cover hydraulics, the drive unit, electrics, brakes, steering, the mast, lift chains, and fork tines. Symbols, terms, and part numbers are defined to assist maintenance personnel.
3. Technicians should follow all safety notices, use recommended lubricants, and apply proper torques when servicing components to prevent injuries and ensure safe operation.
Crown sc3018 forklift service repair manualfhhsjdkmem
This document provides maintenance and repair information for a series of trucks. It contains sections on safety, introduction/use of the manual, lubrication/adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The manual describes the various systems, components, maintenance schedules, and repair procedures.
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This document provides maintenance and repair information for a series of trucks. It contains sections on safety, introduction/use of the manual, lubrication/adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The manual describes the various systems, components, maintenance schedules, and repair procedures.
Crown sc3013 forklift service repair manualfhhsjdkmem
This document provides maintenance and repair information for a SC3000 series truck. It contains sections covering safety, introduction/overview, lubrication and adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The document includes descriptions of components, operational details, maintenance schedules, repair instructions, and wiring diagrams.
Caterpillar cat 324 e l excavator (prefix kte) service repair manual (kte0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process includes removing 28 components from the travel motor housing including the head, brake piston, plates, springs, seals and bearings. The assembly section outlines 28 steps to reinstall these components in reverse order using various tools. Special care must be taken when working with pressurized components and springs to avoid injury.
Caterpillar cat 324 e l excavator (prefix jcz) service repair manual (jcz0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process involves removing 28 components from the travel motor including the head, brake piston, plates, springs and seals. The assembly is the reverse of the disassembly with instructions to lubricate parts, align markings and install components in the correct orientation using various tools. Proper assembly is important to prevent damage and ensure correct functioning of the travel motor.
Caterpillar cat 324 e excavator (prefix kte) service repair manual (kte00001 ...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process includes removing 28 components from the travel motor housing including the head, brake piston, plates, springs, seals and bearings. The assembly section outlines 28 steps to reinstall these components in reverse order using various tools. Special care must be taken when working with pressurized components or parts under spring force.
Caterpillar cat 324 e excavator (prefix jcz) service repair manual (jcz00001 ...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process involves removing 28 components from the travel motor including the head, brake piston, plates, springs and seals. The assembly is the reverse of the disassembly with instructions to lubricate parts, align markings and install components in the correct orientation using various tools. Proper assembly is important to prevent damage and ensure correct functioning of the travel motor.
Caterpillar cat 324 d ln excavator (prefix trh) service repair manual (trh000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a 324D LN excavator travel motor. It includes 28 steps for disassembly that remove components like the motor head, seals, plates, discs, bearings, and housing pieces. The 28-step assembly procedure reverses the disassembly process and includes notes on cleaning, marking parts, and applying thread lock compound to seals before reinstalling components in their original positions.
Caterpillar cat 324 d ln excavator (prefix sym) service repair manual (sym000...fhhsjdkmem
This document provides disassembly instructions for the final drive of a 324D L and 324D LN excavator. The 31-step procedure includes removing the final drive housing, cover, gears, carriers, shafts, seals and other components. Special tools are required to remove retaining rings, pins and other fasteners. Cleanliness is important to prevent dirt from entering during disassembly. Weights of components are provided to assist with removal.
Caterpillar cat 324 d ln excavator (prefix ejc) service repair manual (ejc000...fhhsjdkmem
The document provides instructions for disassembling the final drive of an excavator. Key steps include:
1. Marking the final drive for alignment and securing it to a repair stand.
2. Removing bolts and lifting devices to extract the cover and internal gears and shafts.
3. Using punches and presses to separate planetary carrier assemblies and remove their internal components.
4. Lifting out carriers, gears, and other parts until the final drive is fully disassembled.
Caterpillar cat 324 d l excavator (prefix lab) service repair manual (lab0000...fhhsjdkmem
This document provides the disassembly procedure for the final drive of a 324D L Excavator. It begins by removing the final drive from the machine and securing it to a repair stand. It then describes removing over 30 individual parts from the final drive including gears, shafts, carriers, seals, and housings through the use of various tools like retaining ring pliers, link brackets, and eyebolts. The procedure concludes by describing how to remove the final drive sprocket if necessary.
Crown wf3000 series forklift service repair manualfhhsjdkmem
1. The document is a service manual for the WF3000 series forklift trucks that provides information on maintenance, repair, troubleshooting, and specifications for the trucks.
2. It includes sections covering lubrication and adjustments, hydraulics, drive unit, electrics, brakes, steering, mast, cylinders, and electrical diagrams.
3. The manual provides maintenance technicians with the information needed to service the trucks, such as recommended lubricants, component locations, repair instructions, and electrical schematics.
Crown we2000 series forklift service repair manualfhhsjdkmem
This document is a service and parts manual for a series of lift trucks. It contains sections on maintenance, lubrication, adjustments, repairs, and inspections for various components of the trucks including the hydraulic system, drive unit, electrical systems, brakes, steering, mast, cylinders, and forks. The manual provides maintenance schedules, diagrams, part numbers, and repair instructions.
Crown wave50 work assit vehicle service repair manualfhhsjdkmem
This document is a maintenance manual for the WAVE 50 series work assist vehicle. It provides instructions for general maintenance, cleaning, safety procedures, and maintenance of specific vehicle systems. Systems covered include the battery, hydraulics, mast, drive unit, and other mechanical components. The manual includes lubrication requirements, torque specifications, and troubleshooting guides.
Crown st3000 series forklift service repair manualfhhsjdkmem
This document provides a service manual for the ST3000 series truck. It contains sections on safety, introduction, lubrication and adjustment, hydraulics, drive unit, and electrics. The manual includes information on component access, recommended lubricants, maintenance schedules, hydraulic and electrical system diagrams, and instructions for repairs and replacements of parts like pumps, motors, and gears.
Crown sc3200 series forklift service repair manualfhhsjdkmem
1. The document provides maintenance instructions for the SC3200 series truck. It details safety procedures, component descriptions, lubrication and inspection schedules, repair procedures, and torque specifications.
2. Sections cover hydraulics, the drive unit, electrics, brakes, steering, the mast, lift chains, and fork tines. Symbols, terms, and part numbers are defined to assist maintenance personnel.
3. Technicians should follow all safety notices, use recommended lubricants, and apply proper torques when servicing components to prevent injuries and ensure safe operation.
Crown sc3018 forklift service repair manualfhhsjdkmem
This document provides maintenance and repair information for a series of trucks. It contains sections on safety, introduction/use of the manual, lubrication/adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The manual describes the various systems, components, maintenance schedules, and repair procedures.
Crown sc3016 forklift service repair manualfhhsjdkmem
This document provides maintenance and repair information for a series of trucks. It contains sections on safety, introduction/use of the manual, lubrication/adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The manual describes the various systems, components, maintenance schedules, and repair procedures.
Crown sc3013 forklift service repair manualfhhsjdkmem
This document provides maintenance and repair information for a SC3000 series truck. It contains sections covering safety, introduction/overview, lubrication and adjustment, hydraulics, drive unit, electrics, brakes, and batteries. The document includes descriptions of components, operational details, maintenance schedules, repair instructions, and wiring diagrams.
Caterpillar cat 324 e l excavator (prefix kte) service repair manual (kte0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process includes removing 28 components from the travel motor housing including the head, brake piston, plates, springs, seals and bearings. The assembly section outlines 28 steps to reinstall these components in reverse order using various tools. Special care must be taken when working with pressurized components and springs to avoid injury.
Caterpillar cat 324 e l excavator (prefix jcz) service repair manual (jcz0000...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process involves removing 28 components from the travel motor including the head, brake piston, plates, springs and seals. The assembly is the reverse of the disassembly with instructions to lubricate parts, align markings and install components in the correct orientation using various tools. Proper assembly is important to prevent damage and ensure correct functioning of the travel motor.
Caterpillar cat 324 e excavator (prefix kte) service repair manual (kte00001 ...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process includes removing 28 components from the travel motor housing including the head, brake piston, plates, springs, seals and bearings. The assembly section outlines 28 steps to reinstall these components in reverse order using various tools. Special care must be taken when working with pressurized components or parts under spring force.
Caterpillar cat 324 e excavator (prefix jcz) service repair manual (jcz00001 ...fhhsjdkmem
This document provides instructions for disassembling and assembling the travel motor on 324E and 324E L excavator models. The disassembly process involves removing 28 components from the travel motor including the head, brake piston, plates, springs and seals. The assembly is the reverse of the disassembly with instructions to lubricate parts, align markings and install components in the correct orientation using various tools. Proper assembly is important to prevent damage and ensure correct functioning of the travel motor.
Caterpillar cat 324 d ln excavator (prefix trh) service repair manual (trh000...fhhsjdkmem
This document provides the disassembly and assembly procedures for a 324D LN excavator travel motor. It includes 28 steps for disassembly that remove components like the motor head, seals, plates, discs, bearings, and housing pieces. The 28-step assembly procedure reverses the disassembly process and includes notes on cleaning, marking parts, and applying thread lock compound to seals before reinstalling components in their original positions.
Caterpillar cat 324 d ln excavator (prefix sym) service repair manual (sym000...fhhsjdkmem
This document provides disassembly instructions for the final drive of a 324D L and 324D LN excavator. The 31-step procedure includes removing the final drive housing, cover, gears, carriers, shafts, seals and other components. Special tools are required to remove retaining rings, pins and other fasteners. Cleanliness is important to prevent dirt from entering during disassembly. Weights of components are provided to assist with removal.
Caterpillar cat 324 d ln excavator (prefix ejc) service repair manual (ejc000...fhhsjdkmem
The document provides instructions for disassembling the final drive of an excavator. Key steps include:
1. Marking the final drive for alignment and securing it to a repair stand.
2. Removing bolts and lifting devices to extract the cover and internal gears and shafts.
3. Using punches and presses to separate planetary carrier assemblies and remove their internal components.
4. Lifting out carriers, gears, and other parts until the final drive is fully disassembled.
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Crane Maintenance and Repair: To ensure optimal performance and safety, regular maintenance and timely repairs are essential for cranes. Our team of skilled technicians provides comprehensive maintenance and repair services to keep your equipment running smoothly and minimize downtime.
Crane Operator Training: Proper training is crucial for safe and efficient crane operation. We offer specialized training programs conducted by certified instructors to equip operators with the skills and knowledge they need to handle cranes effectively.
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What is a Catalytic Converter?: Learn about the function of catalytic converters in vehicles and why they are targeted by thieves.
Why are They Stolen?: Discover the valuable metals inside catalytic converters (such as platinum, palladium, and rhodium) that make them attractive to criminals.
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2. 00-2 D61EX, PX-12
CONTENTS
01 GENERAL ......................................................................... 01-1
10 STRUCTURE AND FUNCTION ....................................... 10-1
20 TESTING AND ADJUSTING........................................... 20-1
30 DISASSEMBLY AND ASSEMBLY .................................. 30-1
40 MAINTENANCE STANDARD.......................................... 40-1
90 OTHERS............................................................................ 90-1
No. of page
2
3. 00-3
GENERAL PRECAUTIONS
Mistakes in operation are extremely dangerous.
Read the Operation and Maintenance Manual
carefully BEFORE operating the machine.
1. Before carrying out any greasing or repairs,
read all the precautions given on the decals
which are fixed to the machine.
2. When carrying out any operation, always
wear safety shoes and helmet. Do not wear
loose work clothes, or clothes with buttons
missing.
• Always wear safety glasses when hitting
parts with a hammer.
• Always wear safety glasses when grind-
ing parts with a grinder, etc.
3. If welding repairs are needed, always have a
trained, experienced welder carry out the
work. When carrying out welding work, al-
ways wear welding gloves, apron, hand
shield, cap and other clothes suited for weld-
ing work.
4. When carrying out any operation with two
or more workers, always agree on the oper-
ating procedure before starting. Always in-
form your fellow workers before starting any
step of the operation. Before starting work,
hang UNDER REPAIR signs on the controls
in the operator's compartment.
5. Keep all tools in good condition and learn
the correct way to use them.
6. Decide a place in the repair workshop to
keep tools and removed parts. Always keep
the tools and parts in their correct places.
Always keep the work area clean and make
sure that there is no dirt or oil on the floor.
Smoke only in the areas provided for smok-
ing. Never smoke while working.
PREPARATIONS FOR WORK
7. Before adding oil or making any repairs,
park the machine on hard, level ground, and
block the wheels or tracks to prevent the
machine from moving.
8. Before starting work, lower blade, ripper,
bucket or any other work equipment to the
ground. If this is not possible, insert the
safety pin or use blocks to prevent the work
equipment from falling. In addition, be sure
to lock all the control levers and hang warn-
ing signs on them.
9. When disassembling or assembling, support
the machine with blocks, jacks or stands
before starting work.
10. Remove all mud and oil from the steps or
other places used to get on and off the ma-
chine. Always use the handrails, ladders or
steps when getting on or off the machine.
Never jump on or off the machine. If it is
impossible to use the handrails, ladders or
steps, use a stand to provide safe footing.
Proper service and repair is extremely important for safe machine operation. The
service and repair techniques recommended by Komatsu and described in this manual
are both effective and safe. Some of these techniques require the use of tools specially
designed by Komatsu for the specific purpose.
To prevent injury to workers, the symbol ¤ is used to mark safety precautions in this
manual. The cautions accompanying these symbols should always be followed care-
fully. If any dangerous situation arises or may possibly arise, first consider safety, and
take the necessary actions to deal with the situation.
SAFETY
SAFETY NOTICE
IMPORTANT SAFETY NOTICE
SAFETY SAFETY NOTICE
4. 00-4
PRECAUTIONS DURING WORK
11. When removing the oil filler cap, drain plug
or hydraulic pressure measuring plugs,
loosen them slowly to prevent the oil from
spurting out.
Before disconnecting or removing compo-
nents of the oil, water or air circuits, first
remove the pressure completely from the
circuit.
12. The water and oil in the circuits are hot
when the engine is stopped, so be careful
not to get burned.
Wait for the oil and water to cool before
carrying out any work on the oil or water
circuits.
13. Before starting work, remove the leads from
the battery. Always remove the lead from
the negative (–) terminal first.
14. When raising heavy components, use a hoist
or crane.
Check that the wire rope, chains and hooks
are free from damage.
Always use lifting equipment which has
ample capacity.
Install the lifting equipment at the correct
places. Use a hoist or crane and operate
slowly to prevent the component from hit-
ting any other part. Do not work with any
part still raised by the hoist or crane.
15. When removing covers which are under in-
ternal pressure or under pressure from a
spring, always leave two bolts in position
on opposite sides. Slowly release the pres-
sure, then slowly loosen the bolts to remove.
16. When removing components, be careful not
to break or damage the wiring. Damaged
wiring may cause electrical fires.
17. When removing piping, stop the fuel or oil
from spilling out. If any fuel or oil drips onto
the floor, wipe it up immediately. Fuel or oil
on the floor can cause you to slip, or can
even start fires.
18. As a general rule, do not use gasoline to
wash parts. In particular, use only the mini-
mum of gasoline when washing electrical
parts.
19. Be sure to assemble all parts again in their
original places.
Replace any damaged parts with new parts.
• When installing hoses and wires, be sure
that they will not be damaged by contact
with other parts when the machine is be-
ing operated.
20. When installing high pressure hoses, make
sure that they are not twisted. Damaged
tubes are dangerous, so be extremely care-
ful when installing tubes for high pressure
circuits. Also, check that connecting parts
are correctly installed.
21. When assembling or installing parts, always
use the specified tightening torques. When
installing protective parts such as guards,
or parts which vibrate violently or rotate at
high speed, be particularly careful to check
that they are installed correctly.
22. When aligning two holes, never insert your
fingers or hand. Be careful not to get your
fingers caught in a hole.
23. When measuring hydraulic pressure, check
that the measuring tool is correctly assem-
bled before taking any measurements.
24. Take care when removing or installing the
tracks of track-type machines.
When removing the track, the track sepa-
rates suddenly, so never let anyone stand at
either end of the track.
SAFETY SAFETY NOTICE
5. 00-5
NOTICE
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give
an understanding of the structure, but also serves as reference material for troubleshooting.
In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and
maintenance standards.
TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well as
adjustments to be made at completion of the checks and repairs.
Troubleshooting charts correlating "Problems" to "Causes" are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or
assembling each component, as well as precautions to be taken for these operations.
MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams.
In addition, this section may give the specifications of attachments and options together.
The specifications contained in this shop manual are subject to change at any
time and without any advance notice. Use the specifications given in the book
with the latest date.
FOREWORD
GENERAL
This shop manual has been prepared as an aid to improve the quality of repairs by giving the
serviceman an accurate understanding of the product and by showing him the correct way to perform
repairs and make judgements. Make sure you understand the contents of this manual and use it to full
effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a
service workshop. For ease of understanding, the manual is divided into the following chapters; these
chapters are further divided into the each main group of components.
FOREWORD GENERAL
6. 00-6
Shop manuals are issued as a guide to carrying
out repairs. They are divided as follows:
Chassis volume: Issued for every machine model
Engine volume: Issued for each engine series
Electrical volume:
Attachments volume:
These various volumes are designed to avoid
duplicating the same information. Therefore, to
deal with all repairs for any model , it is neces-
sary that chassis, engine, electrical and attach-
ment volumes be available.
DISTRIBUTION AND UPDATING
Any additions, amendments or other changes
will be sent to KOMATSU distributors. Get the
most up-to-date information before you start any
work.
FILING METHOD
1. See the page number on the bottom of the
page. File the pages in correct order.
2. Following examples show how to read the
page number.
Example 1 (Chassis volume):
10 - 3
Item number (10. Structure
and Function)
Consecutive page number for
each item.
Example 2 (Engine volume):
12 - 5
Unit number (1. Engine)
Item number (2. Testing and
Adjusting)
Consecutive page number for
each item.
3. Additional pages: Additional pages are indi-
cated by a hyphen (-) and number after the
page number. File as in the example.
Example:
10-4
10-4-1
10-4-2
10-5
VOLUMES
Each issued as one
volume to cover all
models
12-203
12-203-1
12-203-2
12-204
Added pages
REVISED EDITION MARK
When a manual is revised, an edition mark
(123....) is recorded on the bottom of the
pages.
REVISIONS
Revised pages are shown in the LIST OF RE-
VISED PAGES next to the CONTENTS page.
SYMBOLS
So that the shop manual can be of ample prac-
tical use, important safety and quality portions
are marked with the following symbols.
Symbol Item
Safety
Caution
Weight
Tightening
torque
Coat
Oil, water
Drain
Remarks
Places where oil or water
must be drained, and quan-
tity to be drained.
Places where oil, water or fuel
must be added, and the ca-
pacity.
Places to be coated with ad-
hesives and lubricants, etc.
Places that require special at-
tention for the tightening
torque during assembly.
Weight of parts of systems.
Caution necessary when se-
lecting hoisting wire, or when
working posture is important,
etc.
Special technical precautions
or other precautions for pre-
serving standards are neces-
sary when performing the
work.
Special safety precautions are
necessary when performing
the work.
¤
4
2
5
6
fl
}
HOW TO READ THE SHOP MANUAL
FOREWORD HOW TO READ THE SHOP MANUAL
7. D61EX, PX-12 01-1
GENERAL
01 GENERAL
Specification drawing .................................. 01- 2
Specifications................................................ 01- 4
Weight table ................................................. 01- 9
Table of fuel, coolant and lubricants .........01-11
4
10. D61EX, PX-1201-4
GENERALWeight
Speedranges
Performance SPESIFICATIONS
Machine model
Serial Numbers
D61PX-12D61EX-12
Operating weight
• bare tracktor
kg
13,130 14,150
• with angle tiltdozer 15,470 16,780
• with angle tiltdozer + cab + ROPS 16,090 17,790
Min. truning radius m 3.6 3.6
Gradeability deg 30 30
Stability (front, rear, left, right) deg 35 35
Forward 1st 3.5 3.5
Forward 2nd km/h 6.0 6.0
Forward 3rd 10.3 10.3
Reverse 1st 4.6 4.6
Reverse 2nd km/h 7.9 7.9
Reverse 3rd 12.8 12.8
Bare tractor 41 {0.42} 25 {0.26}
kPaAngle tiltdozer
{kg/cm2
}
49 {0.50} 30 {0.31}
Angle tiltdozer + cab + ROPS 50 {0.51} 31 {0.32}
Bare tractor 3,935 4,210
mm
With angle tiltdozer 5,030 5,465
Bare tractor 2,500 3,000
mm
With angle tiltdozer 3,275 3,860
To tip of exhaust pipe 2,945 2,970
mm
To top of operator's 2,195 2,225
compartment
Overall
heights
Overall
width
Overall
length
Dimensions
Groundpressure
SPECIFICATIONS
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
4
11. D61EX, PX-12 01-5
GENERAL SPESIFICATIONS
EngineDimensions
Machine model
Serial Numbers
D61EX-12 D61PX-12
When ROPS cab is installed 3,115 3,140
When ROPS canopy is installed mm 3,115 3,140
When canopy is installed 2,940 2,965
Track gauge 1,900 2,140
Length of track on ground 2,600 3,170
Width of track shoe (standard) mm 600 860
Min. ground clearance 390 470
(To bottom of undercover)
Model S6D114E-1A
Type 4-cycle, water cooled,
inline vertical type
direct injection
With turbocharger
No. of cylinder – bore x stroke mm 6 – 114 x 135
Piston displacement ¬ {cc} 8.27 {8,270}
Rated horsepower kw/rpm 112/1,850
{HP/rpm} {150/1,850}
Max. torque Nm/rpm 784/1,300
{kgm/rpm} {80/1,300}
High idling rpm 2,000
Low idling rpm 850
Min. fuel consumption g/kwh 222 {165}
ratio {g/HPh}
Starting motor 24V, 7.5kW
Alternator 24V, 40A
Battery 12V, 140Ah x 2
Radiator core type D-6
3-element,
Torque converter
1-stage, 1 phase
Planetary gear type, multiple disc clutch, hydraulically actuated,
Transmission lubrication gear pump, force feed, forward 3 speed, reverse 3
speed, manual mechanical type
OverallheightPerformance
Powertrainsystem
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
4
12. D61EX, PX-1201-6
GENERALPowertrainsystem
Machine model
Serial Numbers
D61PX-12
SPESIFICATIONS
D61EX-12
Undercarriage
Steering,
workequipment
hydraulicsystem
Bevel gear shaft Spiral bevel gear, force feed lubrication gear pump
Differential planetary gear type,
HSS steering system hydraulic motor drive type, hand operated,
hydraulically actuated
Wet type, multiple disc,
Master brake spring boosted, foot operated,
hydraulically actuated
Final drive 2-stage spur gear reduction, splash type lubrication
Suspension Semi-rigid, floating beam
Carrier roller (each side) 2
Track roller (each side) 6 8
Assembly type,
Track shoe 600 mm single grouser, —
40 on each side,
pitch: 190 mm
Assembly type,
special swamp shoe,
860 mm — oil enclosed link,
46 on each side,
pitch: 190 mm
Power train, lubrication pump Gear type (SAL(2)–040+040)
Gear type (SBR(1)-08)
PPC pump Max. discharge pressure: 3.0 MPa {31 kg/cm2
}
Theoretical discharge amount: 17.3 ¬/min/2,164 rpm
Piston type (HMF80), swash
plate angle 16˚, with brake valve
HSS motor
Permissible peak pressure:
47MPa {480kg/cm2
}
Rated flow (theoretical value):
153 ¬/min/1,836 rpm
Variable swash plate type (HPV82),
CLSS, load sensing type
Hydraulic pump Permissible peak pressure:
47 MPa {480 kg/cm2
}
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
4
13. D61EX, PX-12 01-7
GENERAL SPESIFICATIONS
Workequipment(angletiltdozer)Steering,workequipmenthydraulicsystem
Machine model
Serial Numbers
D61EX-12 D61PX-12
Type
• For blade lift • 3 + 1-spool type, hydraulically assisted steering valve
• For blade tilt (Lift + tilt + angle + steering)
• For steering
Type Reciprocal type
Cylinder bore 110
Outside diameter of piston rod 55
Piston stroke
mm
469
Max. distance between pins 1322
Min. distance between pins 853
Cylinder bore 130
Outside diameter of piston rod 70
Piston stroke mm 190
Max. distance between pins 1,226
Min. distance between pins 1,036
Cylinder bore 100
Outside diameter of piston rod 60
Piston stroke mm 469
Max. distance between pins 1,349
Min. distance between pins 880
Hydraulic tank Box type (externally installed control valve)
Type Hydraulic angle tiltdozer
Blade support method Brace type (tilt cylinder on right)
Max. lifting height (from ground) mm 965 1,145
Max. lowering depth (from ground) mm 445 520
Max. tilt mm 500 610
Blade width mm 3,275 3,860
Blade height mm 1,200 1,160
Blade cutting angle deg 57 57
Hydrauliccylinder
Dimensionsofblade
liftcylinder
Maincontrolvalve
Dimensionsofbladetilt,
pitchcylinder
Dimensionsofblade
anglecylinder
PerformanceDimensions
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
4
14. D61EX, PX-1201-8
GENERAL
Machine model
Serial Numbers
D61EX-12 D61PX-12
SPESIFICATIONS
PerformanceDimensions
Workequipment(semiU-dozer)
—Type Hydraulic semi U-dozer
—Blade support method Brace type (tilt cylinder on right)
Max. lifting height (from ground) mm 965 —
Max. lowering depth (from ground) mm 535 —
Max. tilt mm 600 —
Range for blade cutting angle deg ±7 —
Blade width mm 3,175 —
Blade height mm 1,300 —
Blade cutting angle deg 55 —
4
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
15. D61EX, PX-12 01-8-1
GENERAL
Weight
Speedranges
Performance
SPESIFICATIONS
Machine model
Serial Numbers
D61PX-12D61EX-12
Operating weight
• bare tracktor
kg
13,130 14,150
• with angle tiltdozer 15,470 16,780
• with angle tiltdozer + cab + ROPS 16,090 17,790
Min. truning radius m 3.6 3.6
Gradeability deg 30 30
Stability (front, rear, left, right) deg 35 35
Forward 1st 3.5 3.5
Forward 2nd km/h 6.0 6.0
Forward 3rd 10.3 10.3
Reverse 1st 4.6 4.6
Reverse 2nd km/h 7.9 7.9
Reverse 3rd 12.8 12.8
Bare tractor 41 {0.42} 25 {0.26}
kPaAngle tiltdozer
{kg/cm2
}
49 {0.50} 30 {0.31}
Angle tiltdozer + cab + ROPS 50 {0.51} 31 {0.32}
Bare tractor 3,935 4,210
mm
With angle tiltdozer 5,030 5,465
Bare tractor 2,500 3,000
mm
With angle tiltdozer 3,275 3,860
To tip of exhaust pipe 2,887 2,917
mm
To top of operator's 2,195 2,225
compartment
Overall
heights
Overall
width
Overall
length
Dimensions
Groundpressure
4
B3001 and upB3001 and up
16. D61EX, PX-1201-8-2
GENERAL SPESIFICATIONSEngineDimensions
Machine model
Serial Numbers
D61EX-12 D61PX-12
When ROPS cab is installed 3,115 3,140
When ROPS canopy is installed mm 3,115 3,140
When canopy is installed 2,940 2,965
Track gauge 1,900 2,140
Length of track on ground 2,600 3,170
Width of track shoe (standard) mm 600 860
Min. ground clearance 390 470
(To bottom of undercover)
Model SA6D114E-2
Type 4-cycle, water cooled,
inline vertical type
direct injection
With turbocharger
and water cooled aftercooler
No. of cylinder – bore x stroke mm 6 – 114 x 135
Piston displacement ¬ {cc} 8.27 {8,270}
Rated horsepower kw/rpm 112/1,800
{HP/rpm} {150/1,800}
Max. torque Nm/rpm 825/1,300
{kgm/rpm} {84/1,300}
High idling rpm 2,000
Low idling rpm 875
Min. fuel consumption g/kwh 226 {166}
ratio {g/HPh}
Starting motor 24V, 7.5kW
Alternator 24V, 60A
Battery 12V, 140Ah x 2
Radiator core type D-6
3-element,
Torque converter
1-stage, 1 phase
Planetary gear type, multiple disc clutch, hydraulically actuated,
Transmission lubrication gear pump, force feed, forward 3 speed, reverse 3
speed, manual mechanical type
OverallheightPerformance
Powertrainsystem
4
B3001 and upB3001 and up
17. D61EX, PX-12 01-8-3
GENERAL
Powertrainsystem
Machine model
Serial Numbers
D61PX-12
SPESIFICATIONS
D61EX-12
Undercarriage
Steering,
workequipment
hydraulicsystem
Bevel gear shaft Spiral bevel gear, force feed lubrication gear pump
Differential planetary gear type,
HSS steering system hydraulic motor drive type, hand operated,
hydraulically actuated
Wet type, multiple disc,
Master brake spring boosted, foot operated,
hydraulically actuated
Final drive 2-stage spur gear reduction, splash type lubrication
Suspension Semi-rigid, floating beam
Carrier roller (each side) 2
Track roller (each side) 6 8
Assembly type,
Track shoe 600 mm single grouser, —
40 on each side,
pitch: 190 mm
Assembly type,
special swamp shoe,
860 mm — oil enclosed link,
46 on each side,
pitch: 190 mm
Power train, lubrication pump Gear type (SAL(2)–040+040)
Gear type (SBR(1)-08)
PPC pump Max. discharge pressure: 3.0 MPa {31 kg/cm2
}
Theoretical discharge amount: 17.3 ¬/min/2,164 rpm
Piston type (HMF95), swash
plate angle 16˚, with brake valve
HSS motor
Permissible peak pressure:
47MPa {480kg/cm2
}
Rated flow (theoretical value):
153 ¬/min/1,836 rpm
Variable swash plate type (HPV82),
CLSS, load sensing type
Hydraulic pump Permissible peak pressure:
47 MPa {480 kg/cm2
}
4
B3001 and upB3001 and up
18. D61EX, PX-1201-8-4
GENERAL SPESIFICATIONSWorkequipment(angletiltdozer)Steering,workequipmenthydraulicsystem
Machine model
Serial Numbers
D61EX-12 D61PX-12
Type
• For blade lift • 3 + 1-spool type, hydraulically assisted steering valve
• For blade tilt (Lift + tilt + angle + steering)
• For steering
Type Reciprocal type
Cylinder bore 110
Outside diameter of piston rod 55
Piston stroke
mm
469
Max. distance between pins 1322
Min. distance between pins 853
Cylinder bore 130
Outside diameter of piston rod 70
Piston stroke mm 190
Max. distance between pins 1,226
Min. distance between pins 1,036
Cylinder bore 100
Outside diameter of piston rod 60
Piston stroke mm 469
Max. distance between pins 1,349
Min. distance between pins 880
Hydraulic tank Box type (externally installed control valve)
Type Hydraulic angle tiltdozer
Blade support method Brace type (tilt cylinder on right)
Max. lifting height (from ground) mm 965 1,145
Max. lowering depth (from ground) mm 445 520
Max. tilt mm 500 610
Blade width mm 3,275 3,860
Blade height mm 1,200 1,160
Blade cutting angle deg 57 57
Hydrauliccylinder
Dimensionsofblade
liftcylinder
Maincontrolvalve
Dimensionsofbladetilt,
pitchcylinder
Dimensionsofblade
anglecylinder
PerformanceDimensions
4
B3001 and upB3001 and up
19. D61EX, PX-12 01-8-5
GENERAL
Machine model
Serial Numbers
D61EX-12 D61PX-12
SPESIFICATIONS
PerformanceDimensions
Workequipment(semiU-dozer)
—Type Hydraulic semi U-dozer
—Blade support method Brace type (tilt cylinder on right)
Max. lifting height (from ground) mm 965 —
Max. lowering depth (from ground) mm 535 —
Max. tilt mm 600 —
Range for blade cutting angle deg ±7 —
Blade width mm 3,175 —
Blade height mm 1,300 —
Blade cutting angle deg 55 —
4
B3001 and upB3001 and up
20. STRUCTURE AND FUNCTION
10-1D61EX, PX-12
10 STRUCTURE AND FUNCTION
Radiator, power train, oil cooler................. 10- 2
Engine control .............................................. 10- 4
Power train system ...................................... 10- 5
Power train skeleton .................................... 10- 6
Power train unit............................................ 10- 7
Power train hydraulic piping diagram ....... 10- 8
Damper, universal joint ............................... 10- 9
Torque converter and PTO..........................10-11
Transmission control ................................... 10-14
Transmission ................................................ 10-15
Transmission control valve .........................10-22
Main relief valve........................................... 10-27
Lubrication relief valve ................................ 10-29
Steering and brake control .........................10-30
Bevel gear shaft, HSS steering,
steering brake........................................... 10-31
Brake valve ................................................... 10-41
Scavenging pump strainer ..........................10-45
Power train oil strainer ................................ 10-46
Power train oil filter ..................................... 10-47
Final drive ..................................................... 10-48
Main frame ................................................... 10-51
Track frame ................................................... 10-52
Recoil spring ................................................. 10-53
Suspension ................................................... 10-54
Work equipment hydraulic piping
diagram ..................................................... 10-56
PPC control piping diagram ...................... 10- 58
Work equipment control ........................... 10- 59
Hydraulic tank and filter ............................ 10- 60
Hydraulic and HSS pump.......................... 10- 62
(Serial No. 1001 – 1173)
(Serial No. B1001 – B3000)
Hydraulic and HSS pump........................ 10-76-1
(Serial No. B3001 and up)
Servo valve ................................................10-76-7
PPC valve .................................................... 10- 77
(Serial No. 1001 – 1173)
(Serial No. B1001 – B3000)
PPC valve ...................................................10-83-1
(Serial No. B3001 and up)
PPC charge valve ....................................... 10- 84
Main control valve ..................................... 10- 86
(Serial No. 1001 – 1173)
(Serial No. B1001 – B3000)
Main control valve ....................................10-91-1
(Serial No. B3001 and up)
CLSS ............................................................ 10- 92
HSS motor .................................................. 10-116
(Serial No. 1001 – 1173)
(Serial No. B1001 – B3000)
HSS motor ...............................................10-120-1
(Serial No. B3001 and up)
Suction valve .............................................. 10-121
Work equipment ......................................... 10-123
Engine control ............................................ 10-124
Machine monitor system........................... 10-125
Sensors ....................................................... 10-129
4
21. STRUCTURE AND FUNCTION
10-2 D61EX, PX-12
RADIATOR, POWER TRAIN, OIL COOLER
RADIATOR, POWER TRAIN, OIL COOLER
Radiator
Power train oil cooler
(built into the lower tank)
Serial No. B3001 and up B3001 and up
Core type D-6 D-6 PTO-LS PTO-OL
Fin pitch (mm) 4.0 3.0 — —
Heat dissipation area (m2
) 46.65 57.24 1,173 1,829
OUTLINE
• A reservoir tank has been installed for the
radiator to make it possible to check the ra-
diator water level.
• The power train oil cooler is built into the
lower tank.
1001 – 1173
B1001 – B3000
1001 – 1173
B1001 – B3000
4
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23. STRUCTURE AND FUNCTION RADIATOR, POWER TRAIN, OIL COOLER
1. Radiator core assembly
2. Fan guard
3. Inlet hose
4. Reservoir tank
5. Outlet hose
6. Lower tank
(with built-in power train oil cooler)
7. Fan
8. Water filler cap
9. Drain plug
10. Power train oil cooler
11. Boss
12. Cushion
A-A
SWD03325
A. Power train oil cooler inlet port
B. Power train oil cooler outlet port
D61 EX, PX-12 1o-3
24. STRUCTURE AND FUNCTION
ENGINE CONTROL
ENGINE CONTROL
1. Decelerator pedal
2. Throttle lever
3. Clutch
4. Cable
5. Fuel injection pump
Lever positions
@ Low idling
@ High idling
1o-4
SWDO3326
OUTLINE
l The engine speed is controlled by throttle
lever (2) or decelerator pedal (1).
D61 EX, PX-12
25. STRUCTURE AND FUNCTION
10-5D61EX, PX-12
POWER TRAIN SYSTEM
POWER TRAIN SYSTEM
D61EX-12
D61PX-12
OUTLINE
• The twisting vibration of the motive force
generated by engine (1) is reduced by
damper (2). The motive force then passes
through universal joint (3) and is transmit-
ted to torque converter (7).
• In accordance with the change in the load,
the motive force from the engine is trans-
mitted by means of oil from torque converter
(7) to the transmission input shaft (turbine
shaft).
• In transmission (8), the speed is reduced and
the speed range is selected (forward: 3
speeds, reverse: 3 speeds) by the combina-
tion of the planetary gear system and the
hydraulic clutches. The pair of clutches se-
lected according to the change in the loads
are connected, and the motive force is trans-
mitted from the bevel pinion at the rear end
of the transmission to bevel gear (9).
• The motive force transmitted to the bevel
gear is transmitted to the HSS (Hydrostatic
Steering System) (10). The machine is
steered by generating a difference in rotat-
ing speeds on the left and right sides by
using HSS motor (11) to control the rotation
of the pair of planetary gears on the left and
right sides of the HSS. It is also possible to
use the HSS mechanism to ratate the left
and right sides in opposite directions to en-
able the machine to carry out counterrotation
turns.
• On HSS machines, brake (12) is only used
for braking the machine. Brake (12) uses
wettype, spring-boosted multiple disc
clutches.
• The power coming from brake (12) is trans-
mitted to final drive (13).
• Final drive (13) consists of two-stage spur
gear. This reduces the speed and rotates
sprocket (14) to drive track shoe (15) and
move the machine.
4