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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
-3MC
WA120-3MC A31001
4D102E-1
CEAM007702
and up
Copyright 2016 Komatsu
Printed in U.S.A
Komatsu America Corp.
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Related Manuals for Komatsu WA120-3MC
Summary of Contents for Komatsu WA120-3MC
- Page 1 4D102E-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.
- Page 2 Find manuals at https://best-manuals.com...
- Page 3 Komatsu warrants to the ultimate purchaser and each subsequent purchaser that the engine is designed, built and equipped so as to conform, at the time of sale by Komatsu, with all U.S. Federal emission regulations applicable at the time of manufacture and that it is free from defects in workmanship or material which would cause it not to meet these regulations within five years or 3,000 hours of operation, whichever occurs first, as measured from the date of delivery of the engine to the ultimate purchaser.
- Page 4 Find manuals at https://best-manuals.com...
- Page 5 0INTRODUCTION WA120-3MC Find manuals at https://best-manuals.com...
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Page 6: Introduction
Continuing improvements in the design of this machine can lead to changes in detail, which may not be reflected in this man- ual. 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 7: Safety Information
Safety precautions are described in SAFETY beginning on page 1-1. Komatsu America International Company cannot predict every circumstance that might involve a potential hazard in operation and maintenance. Therefore the safety message in this manual and on the machine may not include all possible safety precau- tions. -
Page 8: Intended Use
The precautions given in this manual for operating, maintenance, and safety procedures are only those that apply when this product is used for the specified purpose. If the machine is used for a purpose that is not listed in this manual, Komatsu Amer- ica International Company cannot bear any responsibility for safety. -
Page 9: Location Of Plates, Table To Enter Serial No. And Distributor
Position of plate As viewed from the right hand side of the machine. TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR Machine serial No.: Engine serial No.: Distributor name: Address: Phone: Service personnel for your machine: WA120-3MC Find manuals at https://best-manuals.com... -
Page 10: Table Of Contents
PROHIBITED OPERATIONS ..........1-14 WA120-3MC... - Page 11 PRECAUTION HIGH PRESSURE OIL ......... 1-31 PRECAUTIONS WHEN CARRYING OUT MAINTENANCE AT HIGH WA120-3MC...
- Page 12 CHECKING THE PARKING BRAKE ......... . 2-36 WA120-3MC...
- Page 13 STANDARD LOADING OPERATIONS ........2-65 WA120-3MC...
- Page 14 WEAR PARTS LIST ............. . . 3-8 0-10 WA120-3MC...
- Page 15 CHECKING THE OIL LEVEL IN THE HYDRAULIC TANK, ADDING OIL ..3-39 CLEANING THE AIR CONDITIONER FRESH AIR FILTER ELEMENT ... . 3-40 WA120-3MC 0-11...
- Page 16 WA120-3MC Specifications ........
- Page 17 PRECAUTIONS WHEN USING ..........5-14 WA120-3MC...
- Page 18 INTRODUCTION MEMORANDA 0-14 WA120-3MC...
- Page 19 1SAFETY 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. WA120-3MC...
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Page 20: Safety
UNAUTHORIZED MODIFICATION 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. -
Page 21: Clothing And Personal Protective Items
LOCK position then stop the engine and use the key to lock all the equipment locks. Always take the key with you. Work equipment posture see “PARKING THE MACHINE” on page 2-53. Locks see “LOCKING THE MACHINE” on page 2-56. WA120-3MC... -
Page 22: Mounting And Dismounting
Stop the engine and do not smoke when refueling. Tighten all fuel and oil caps securely. Refueling and oiling should be made in well ventilated areas. Keep oil and fuel in the determined place and do not allow unauthorized persons to enter. WA120-3MC... -
Page 23: Precautions When Handling At High Temperatures
Do not enter, or put your hand or arm or any other part of your body between movable parts such as between the work equip- ment and cylinders, or between the machine and work equipment. If the work equipment is operated, the clearance will change and this may lead to serious damage or personal injury. WA120-3MC... -
Page 24: Fire Extinguisher And First Aid Kit
Do not use attachments that are not authorized by your distributor or Komatsu America International Company. Use of unau- thorized attachments could create a safety problem and adversely affect the proper operation and useful life of the machine. -
Page 25: Precaution When Handling Accumulator
Do not make any holes or bring any flame or heat close to the accumulator. Do not weld any boss to the accumulator. The gas must be released before disposing of the accumulator, ask your Komatsu distributor to do this. WA120-3MC... -
Page 26: Precautions During Operation
Do not operate the machine near any fire or flame. WALK AROUND CHECK Check that the coolant, fuel and engine oil are at acceptable levels. Check for clogging of the air cleaner Check points see “WALK-AROUND CHECKS” on page 2-27. WA120-3MC... -
Page 27: In Operator's Cab
Adjust all mirrors to give the best view from the operator's seat and clean the surface of the mirrors. If the mirror glass is dam- aged, replace it. Check that the head lamps and working lamps are installed to match the operating conditions. Check also that they light up properly. Correct and repair any abnormalities. WA120-3MC... -
Page 28: When Starting Engine
Never wear the seat belt across the abdomen. Before moving the machine, check the brakes, steering, attachment controls and safety devices such as the travel alarm for proper operation. DO NOT operate the machine until any unsafe conditions have been corrected. 1-10 WA120-3MC... -
Page 29: After Starting Engine
When starting off, sound the horn as an alert. Always operate the machine when seated in the operator's seat. Always fasten the seat belt. Do not allow anyone to ride on the machine body. Check that the backup alarm works properly. WA120-3MC 1-11... -
Page 30: Check When Changing Direction
When operating in the areas that may be hazardous or have poor visibility, designate a person to direct worksite traffic. Ensure that no unauthorized persons come within the direction of travel. Always be sure to carry out the above precautions even when the machine is equipped with a backup alarm. 1-12 WA120-3MC... - Page 31 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...