CEBM000704
Shop Manual
WHEEL LOADER SERIAL NUMBERS
WA250-6 A76001 and up
ENGINE
6D107E-1
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or improvements at any time without incurring any obligation to install such changes on products sold previously. Due to this continuous program of research and development, revisions may be made to this publication. It is recommended that customers contact their distributor for information on the latest revision.
Copyright 2016 Komatsu Printed in U.S.A. Komatsu America Corp. March 2016
FOREWORD
CONTENTS
CONTENTS
00
01
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
10
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD . . . . . . . . . . . . . . . . . . . . 10-1
20
STANDARD VALUE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
30
TESTING AND ADJUSTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
40
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-1
50
DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-1
90
DIAGRAMS AND SCHEMATICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
00-2
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This is the sample of the manual Click on the download link for complete manual
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50-287
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WA250-6
Rev
00-2-11
FOREWORD Mark
Page
00-2-12
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WA250-6
FOREWORD
SAFETY
SAFETY Safety Notice
00
00
Important Safety Notice
00
Proper service and repair is extremely important for the safe operation of your machine. The service and repair techniques recommended and described in this manual are both effective and safe methods of operation. Some of these operations require the use of tools specially designed for the purpose. To prevent injury to workers, the symbols and are used to mark safety precautions in this manual. The cautions accompanying these symbols should always be followed carefully. If any dangerous situation arises or may possibly arise, first consider safety, and take the necessary actions to deal with the situation.
General Precautions
Mistakes in operation are extremely dangerous. Read the Operation & Maintenance Manual carefully BEFORE operating the machine. In addition, read this manual and understand its contents before starting the work. 1.
2.
Before carrying out any greasing or repairs, read all the precautions given on the labels which are fixed to the machine. For the locations of the safety labels and a detailed explanation of precautions, see the Operation & Maintenance Manual. When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing. • •
3.
Always wear safety glasses when hitting parts with a hammer. Always wear safety glasses when grinding parts with a grinder, etc.
If welding repairs are needed, always have a trained, experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, shielding goggles, cap, and other clothes suited for welding work. WARNING! Never modify, weld, cut, or drill on any part of a ROPS structure. Doing so may weaken the structure which could lead to possible failure in a rollover situation
4.
When carrying out any operation with two or more workers, always agree on the operating procedure before starting. Always inform 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.
WA250-6
5.
Keep all tools in good condition; learn the correct way to use them; and use the proper ones. Before starting work, thoroughly check the tools, machine, forklift, service car, etc.
6.
Only qualified workers must carry out work and operations which require license or qualification.
7.
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 smoking. Never smoke while working.
8.
Avoid continuing work for long hours and take rests at proper intervals to keep your body in good condition. Take rests in specified safe places.
00
Safety Points 1
Good arrangement
2
Correct work clothes
3
Following work standard
4
Making and checking signs
5
Prohibition of operation and handling by unlicensed workers
6
Safety check before starting work
7
Wearing protective goggles (for cleaning or grinding work)
8
Wearing shielding goggles and protectors (for welding work)
9
Good physical condition and preparation
10
Precautions against work which you are not used to or work with which you are too familiar
00-3
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