Komatsu 125-3 Series Diesel Engine Service Repair Workshop Manual

Komatsu 125-3 Series Diesel Engine Service Repair Workshop Manual

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  • Model
    PC Models
  • Manufactured by
    Komatsu

This service repair workshop manual PDF download has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the Komatsu 125-3 Series Diesel Engine 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.

Komatsu WA430-5 Wheel loader

Komatsu D65EX, PX-15 Bulldozer

Komatsu D85EX, PX-15 Bulldozer

Komatsu WA470-5 Wheel loader

Komatsu WA480-5 Wheel loader

Komatsu HM300-1 Articulated dump truck

Komatsu PC400-7 Hydraulic excavator

Komatsu PC450-7 Hydraulic excavator

Komatsu HD255-5 Dump truck

- STRUCTURE AND FUNCTION

- MAINTENANCE STANDARD

- TESTING AND ADJUSTING

- DISASSEMBLY AND ASSEMBLY

- REPAIR AND REPLACEMENT OF PARTS

- STANDARD TIGHTENING TORQUE

- IN- LINE FUEL INJECTION PUMP SPECIFICATION

- GENERAL SPECIFICATIONS

- COMMON RAIL SYSTEM SPECIFICATION

- GENERAL GENERAL ASSEMBLY DRAWING

- GENERAL WEIGHT TABLE

- GENERAL ENGINE PERFORMANCE CURVE

- TESTING AND ADJUSTING TESTING AND ADJUSTING DATA

STANDARD VALUE TABLE FOR ELECTRICAL PARTS

MEASURING INTAKE AIR PRESSURE ( BOOT PRESSURE)

MEASURING FUEL PRESSURE

BLEEDING AIR FROM FUEL CIRCUIT

REDUCED CYLINDER MODE OPERATION FOR ENGINE

CHECKING FOR LEAKAGE IN FUEL SYSTEM

ADJUSTING ENGINE STOP MOTOR LEVER

POINTS TO REMEMBER WHEN TROUBLESHOOTING

METHOD OF USING TROUBLESHOOTING CHARTS

METHOD OF USING TROUBLESHOOTING FLOWCHART

ERROR CODE DISPLAYS AND POINTS TO REMEMBER WHEN TROUBLESHOOTING

ACTION TAKEN BY CONTROLLER AND CONDITION OF MACHINE WHEN ERROR CODE IS DISPLAYED

TESTING AND ADJUSTING DATA

REPLACING VALVE SEAT INSERT

REPLACING NOZZLE HOLDER SLEEVE

REPLACING VALUE GUIDE

REPLACING CROSS HEAD GUIDE

GRINDING THE FITTING FACE OF CYLINDER HEAD

REPLACING CAM BUSHING

REPLACING FLYWHEEL RING GEAR

REPLACING ENGINE REAR SEAL

REPLACING CONNECTING ROD SMALL END BUSHING

REPLACING WEAR SLEEVE ( When equipped with sleeve)

MANUAL SPECIFICATION :

Product Code : SEBM006410

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.

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" with "Causes" are also included in this section.

DISASSEMBLY AND ASSEMBLY

This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.

This section gives the judgment standards for inspection of disassembled parts.

The contents of this section may be described in STRUCTURE AND FUNCTION.

This section mainly gives hydraulic circuit diagrams and electric circuit diagrams.

In addition, this section may give the specifications of attachments and options together.

This (OEM) Komatsu Shop Manual has detailed illustrations as well as step by step instructions, It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic. With step by step instruction & highly detailed exploded pictures & diagrams to show you how to complete the required job correctly & efficiently Using. Provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.

This 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 is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

This manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same Repair Service manual your local dealer will use when doing a repair.


This service repair workshop manual PDF download has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the Komatsu 125-3 Series Diesel Engine 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.

Komatsu WA430-5 Wheel loader

Komatsu D65EX, PX-15 Bulldozer

Komatsu D85EX, PX-15 Bulldozer

Komatsu WA470-5 Wheel loader

Komatsu WA480-5 Wheel loader

Komatsu HM300-1 Articulated dump truck

Komatsu PC400-7 Hydraulic excavator

Komatsu PC450-7 Hydraulic excavator

Komatsu HD255-5 Dump truck

- STRUCTURE AND FUNCTION

- MAINTENANCE STANDARD

- TESTING AND ADJUSTING

- DISASSEMBLY AND ASSEMBLY

- REPAIR AND REPLACEMENT OF PARTS

- STANDARD TIGHTENING TORQUE

- IN- LINE FUEL INJECTION PUMP SPECIFICATION

- GENERAL SPECIFICATIONS

- COMMON RAIL SYSTEM SPECIFICATION

- GENERAL GENERAL ASSEMBLY DRAWING

- GENERAL WEIGHT TABLE

- GENERAL ENGINE PERFORMANCE CURVE

- TESTING AND ADJUSTING TESTING AND ADJUSTING DATA

STANDARD VALUE TABLE FOR ELECTRICAL PARTS

MEASURING INTAKE AIR PRESSURE ( BOOT PRESSURE)

MEASURING FUEL PRESSURE

BLEEDING AIR FROM FUEL CIRCUIT

REDUCED CYLINDER MODE OPERATION FOR ENGINE

CHECKING FOR LEAKAGE IN FUEL SYSTEM

ADJUSTING ENGINE STOP MOTOR LEVER

POINTS TO REMEMBER WHEN TROUBLESHOOTING

METHOD OF USING TROUBLESHOOTING CHARTS

METHOD OF USING TROUBLESHOOTING FLOWCHART

ERROR CODE DISPLAYS AND POINTS TO REMEMBER WHEN TROUBLESHOOTING

ACTION TAKEN BY CONTROLLER AND CONDITION OF MACHINE WHEN ERROR CODE IS DISPLAYED

TESTING AND ADJUSTING DATA

REPLACING VALVE SEAT INSERT

REPLACING NOZZLE HOLDER SLEEVE

REPLACING VALUE GUIDE

REPLACING CROSS HEAD GUIDE

GRINDING THE FITTING FACE OF CYLINDER HEAD

REPLACING CAM BUSHING

REPLACING FLYWHEEL RING GEAR

REPLACING ENGINE REAR SEAL

REPLACING CONNECTING ROD SMALL END BUSHING

REPLACING WEAR SLEEVE ( When equipped with sleeve)

MANUAL SPECIFICATION :

Product Code : SEBM006410

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.

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" with "Causes" are also included in this section.

DISASSEMBLY AND ASSEMBLY

This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.

This section gives the judgment standards for inspection of disassembled parts.

The contents of this section may be described in STRUCTURE AND FUNCTION.

This section mainly gives hydraulic circuit diagrams and electric circuit diagrams.

In addition, this section may give the specifications of attachments and options together.

This (OEM) Komatsu Shop Manual has detailed illustrations as well as step by step instructions, It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic. With step by step instruction & highly detailed exploded pictures & diagrams to show you how to complete the required job correctly & efficiently Using. Provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.

This 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 is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

This manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same Repair Service manual your local dealer will use when doing a repair.