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Operation & Maintenance
Manual
WHEEL LOADER
SERIAL NUMBERS
ENGINE
This material is proprietary to Komatsu America International Company and is not to be reproduced, used, or
disclosed except in accordance with written authorization from Komatsu America International Company.
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.
April 2016
-3
WA420-3MC A31001
6D114E-1
CEAM003701
and up
Copyright 2016 Komatsu
Printed in U.S.A
Komatsu America Corp.
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Summary of Contents for Komatsu WA420-3
- Page 1 6D114E-1 ENGINE This material is proprietary to Komatsu America International Company and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America International Company. 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.
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- Page 3 Find manuals at https://best-manuals.com...
- Page 4 INTRODUCTION WA420-3MC Find manuals at https://best-manuals.com...
- Page 5 Continuing improvements in the design of this mach ine can lead to changes in detail, which may not be reflected in this manual. Consult your local distributor or Komatsu America International Company for the latest available information on your machine or for questions regarding information in this manual.
- Page 6 If you are unsure about the safety of some procedures, contact your local distributor or Komatsu Americ a International Company.
- Page 7 If the machine is used for a purpose that is not listed in thi s manua l, Komatsu America International Company cannot bear any responsibility for safety. All consideration o f safety in such operations is the responsibility of the user.
- Page 8 TABLE OF CONTENTS LOCATION OF PLATES, TABLE FOR SERIAL NUMBER AN D DISTRIBUTOR MACHINE SERIAL NO. PLATE POSITION (A) Position of plate On the center right of the front frame. (B) Position of stamp This is stamped on the center of the front frame on the right hand side of the machine.
- Page 9 TABLE OF CONTENTS 5. TABLE OF CONTENTS 1. FOREWORD ................0 -2 2.
- Page 10 TABLE OF CONTENTS 12. OPERATION ................2 -34 12.1 CHECKS BEFORE STARTING .
- Page 11 TABLE OF CONTENTS 15.1 BEFORE STORAGE ............. . .2-78 15.2 DURING STORAGE .
- Page 12 TABLE OF CONTENTS 24. SERVICE PROCEDURE ..............3-29 24.1 INITIAL 250 HOURS SERVICE .
- Page 13 TABLE OF CONTENTS 24.10.3 REPLACE HYDRAULIC TANK BREATHER ELEMENT ....... 3-71 24.10.4 CHANGE AXLE OIL .
- Page 14 MEMORANDA 0-10 WA420-3MC...
- Page 15 SAFETY WARNING Read and follow all safety precautions. Failure to do so may result in serious injury or death. This safety section also contains precautions for optional equipment and attachments. WA420-3MC...
- Page 16 Any modification made without authorization from Komatsu America International Company can create hazards. Before making a modification, consult your local distributor. Komatsu America International Company will not be responsible for any injury or damage caused by any unauthorized modification. WA420-3MC...
- Page 17 WARNING: Failure follow these safety precautions may lead to a serious accident. SAFETY CLOTHING AND PERSONAL PROTECTIVE ITEMS Avoid loose clothing, jewelry, and loose long hair. They can catch on controls or in moving parts and cause serious injury or death. Also, do not wear oily clothes because they are flammable. Wear a hard hat, safety glasses, safety shoes, mask or gloves when operating or maintaining the machine.
- Page 18 WARNING: For reasons of safety, always follow these safety precautions. SAFETY MOUNTING AND DISMOUNTING Climbing on the machine improperly can cause injury. NEVER jump on or off the machine. NEVER get on or off a moving machine. When mounting or dismounting, always face the machine and use the handrails and steps. Do not use the machine's controls or hoses as supports when climbing on or off the machine.
- Page 19 WARNING: Failure follow these safety precautions may lead to a serious accident. SAFETY PRECAUTIONS WHEN HANDLING AT HIGH TEMPERATURES Engine coolant, engine oil, and hydraulic oil can reach high temperatures, and are under pressure during operation. Attempting to remove the cap, drain the oil or water, or replace the filters may lead to serious burns. Stop the engine and wait for the temperature and pressure to subside, and follow the specified procedures when carrying out these operations.
- Page 20 When installing and using an optional attachment, read the instruction manual for the attachment and the information related to attachments in this manual. Do not use attachments that are not authorized by your distributor or Komatsu America International Company. Use of unauthorized attachments could create a safety problem and adversely affect the proper operation and useful life of the machine.
- Page 21 Keep flames and heat away from the accumulator. Do not weld anything (such as bosses) to the accumulator. Gas must be released from an accumulator before it can be discarded; consult your Komatsu America International Distributor. VENTILATION FOR ENCLOSED AREAS Be sure to provide adequate ventilation to prevent gas poisoning.
- Page 22 WARNING: For reasons of safety, always follow these safety precautions. SAFETY PRECAUTIONS DURING OPERATION BEFORE STARTING ENGINE CHECKS BEFORE STARTING ENGINE Carry out the following checks before starting the engine at the beginning of the work shift. Failure to carry out the checks may lead to serious injury or damage. Completely remove all wood chips, leaves, grass, paper and other flammable materials accumulated in the engine compartment and near the battery.
- Page 23 WARNING: Failure follow these safety precautions may lead to a serious accident. SAFETY OPERATING MACHINE WHEN STARTING ENGINE Walk around your machine again just before mounting it, and check for people and objects that might be in the way. Never start the engine if a warning tag has been attached to a control lever (1). When starting the engine, sound the horn to alert nearby personnel.
- Page 24 WARNING: For reasons of safety, always follow these safety precautions. SAFETY PRECAUTIONS WHEN STARTING TO MOVE Before starting to move, check again that there is no one in the surrounding area and that there are no obstacles. When starting, sound the horn to alert nearby personnel. Always operate the machine only when seated in the operator’...
- Page 25 The tires can overheat and develop excess pressure if subjected to sustained high speed use, for which they were not designed. Tires then may fail, causing loss of control. If you must travel continuously consult Komatsu America International, or your distributor. 1-11...
- Page 26 WARNING: For reasons of safety, always follow these safety precautions. SAFETY TRAVELING ON SLOPES Traveling on a slope can allow the machine to tip over or slip to the side. When traveling on slopes, keep the bucket approximately 20 - 30 cm (8-12 in) above the ground. In case of emergency, quickly lower the bucket to the ground to help the machine stop.
- Page 27 WARNING: Failure follow these safety precautions may lead to a serious accident. SAFETY PRECAUTIONS WHEN OPERATING Be careful not to approach too close to the edge of cliffs. When making embankments or landfills, or when dropping soil over a cliff, dump one pile, then use the next pile to push the first pile. The load suddenly becomes lighter when a load is pushed over a cliff or when the machine reaches the top of a slope.
- Page 28 WARNING: For reasons of safety, always follow these safety precautions. SAFETY DO NOT GO CLOSE TO HIGH-VOLTAGE CABLES Going close to high-voltage cables can cause electrical shock. Always maintain the safe distance given below between the machine and the electric cable. The following actions are effective in preventing accidents: 1) Wear shoes with rubber or leather soles.
- Page 29 WARNING: Failure follow these safety precautions may lead to a serious accident. SAFETY OPERATE CAREFULLY ON SNOW When working on snow or icy roads, even a slight slope may cause the machine to slip to the side, so always travel at low speed and avoid sudden starting, stopping, or turning. After a heavy snowfall, the road shoulder and objects placed beside the road are buried in the snow and cannot be seen, so always carry out snow-clearing operations carefully.
- Page 30 WARNING: For reasons of safety, always follow these safety precautions. SAFETY PARKING THE MACHINE Park on level ground where danger of falling rocks, flooding and/or landslides is minimal. If the machine must be parked on a slope, block the wheels to prevent the machine from moving. Then dig the work equipment into the ground.
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