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Komatsu WA420-3 - User Manual

Komatsu WA420-3
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CEAM003701
Operation & Maintenance
Manual
-3
WHEEL LOADER
SERIAL NUMBERS WA420-3MC A31001 and up
ENGINE
6D114E-1
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.
Copyright 2016 Komatsu
Printed in U.S.A
April 2016 Komatsu America Corp.

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    Summary

    INTRODUCTION

    INTENDED USE

    Defines the primary applications for the wheel loader.

    MACHINE FEATURES

    Highlights key design and performance characteristics of the machine.

    BREAKING IN A NEW MACHINE

    Instructions for initial 100-hour operation to ensure machine longevity.

    SAFETY INFORMATION

    SIGNAL WORD DEFINITIONS

    Explains DANGER, WARNING, CAUTION, and NOTE signal word meanings.

    CALIFORNIA PROPOSITION 65 WARNINGS

    Notifies about health hazards from diesel exhaust and battery components.

    PERSONAL PROTECTIVE ITEMS

    Essential personal protective equipment and clothing guidelines for safe operation.

    APPLYING SAFETY LOCK LEVER

    Procedure for securing the machine by applying the safety lock lever.

    MOUNTING AND DISMOUNTING PROCEDURES

    Safe methods for climbing on and off the machine, using handrails and steps.

    FIRE PREVENTION FOR FUEL AND OIL

    Guidelines for preventing fires during fuel and oil handling and storage.

    HIGH TEMPERATURE HANDLING PRECAUTIONS

    Safety measures for working with hot engine coolant, oil, and pressurized systems.

    ASBESTOS DUST HAZARD PREVENTION

    Guidelines for safely handling materials containing asbestos fibers.

    CRUSHING OR CUTTING PREVENTION

    Warning to keep body parts away from moving machine components.

    FIRE EXTINGUISHER AND FIRST AID KIT

    Ensuring availability and readiness of fire extinguishers and first aid kits.

    PRECAUTIONS WHEN USING ROPS

    Importance of ROPS and seat belt for operator protection during rollovers.

    PRECAUTIONS FOR ATTACHMENTS

    Guidelines for using authorized attachments safely and correctly.

    ACCUMULATOR HANDLING PRECAUTIONS

    Safety measures for handling high-pressure nitrogen gas accumulators.

    VENTILATION FOR ENCLOSED AREAS

    Ensuring adequate ventilation to prevent gas poisoning in enclosed spaces.

    MIRRORS, WINDOWS AND LIGHTS PRECAUTIONS

    Maintaining clear visibility by cleaning and adjusting mirrors, windows, and lights.

    SERIAL NUMBER AND DISTRIBUTOR INFORMATION

    MACHINE SERIAL NO. PLATE POSITION

    Specifies the location of the machine's serial number plate.

    ENGINE SERIAL NO. PLATE POSITION

    Specifies the location of the engine serial number plate.

    SERIAL NUMBER AND DISTRIBUTOR TABLE

    A form to record machine serial number, distributor, and service personnel.

    GENERAL PRECAUTIONS

    SAFETY RULES

    General rules for trained personnel, thinking before acting, and alertness.

    SAFETY FEATURES UTILIZATION

    Emphasis on proper use and maintenance of guards, seat belts, and safety lock lever.

    UNAUTHORIZED MODIFICATION WARNING

    Warning against modifications and disclaimer of manufacturer responsibility.

    PRECAUTIONS DURING OPERATION

    BEFORE STARTING ENGINE CHECKS

    Pre-operation checks including fluid levels, wiring, and flammable materials.

    OPERATOR SEAT ADJUSTMENT

    Ensuring proper seat adjustment for comfortable and safe operation.

    SEAT BELT HANDLING

    Checking seat belt condition and proper use.

    GAUGES OPERATION CHECK

    Procedure to verify that all gauges are functioning correctly.

    STARTING ENGINE PROCEDURE

    Pre-start checks, sounding horn, and safe starting procedures.

    AFTER STARTING ENGINE CHECKS

    Post-start checks of gauges, equipment, and listening for abnormalities.

    STARTING TO MOVE PRECAUTIONS

    Safety checks before moving the machine, including obstacle checks and horn use.

    CHANGING DIRECTION CHECK

    Awareness of surroundings and personnel when changing machine direction.

    PRECAUTIONS WHEN TRAVELING

    TRAVELING SAFETY GUIDELINES

    General safety guidelines for machine movement, speed, and hazards.

    TRAVELING ON SLOPES

    Safe techniques for operating on inclines, including bucket position and gear selection.

    PROHIBITED OPERATIONS

    Operations that must be avoided due to overload or capacity limits.

    OPERATING PRECAUTIONS

    APPROACHING EDGES AND HANDLING LOADS

    Safety measures for embankments, cliffs, and handling unstable or heavy loads.

    SPECIFIED OPERATIONS AND VISIBILITY

    Adherence to intended uses, operational limits, and maintaining visibility.

    AVOID COLLISIONS

    Precautions for operating in confined spaces and near overhead obstructions.

    HIGH-VOLTAGE CABLE SAFETY

    MINIMUM SAFETY DISTANCES

    Table of minimum safe distances from high-voltage power lines.

    ENSURE GOOD VISIBILITY NEAR CABLES

    Maintaining visibility by adequate lighting for safe operation near cables.

    OPERATING CAUTIONS IN SPECIFIC CONDITIONS

    OPERATING CAREFULLY ON SNOW

    Safety guidelines for operating on snow or icy surfaces, including tire chains.

    WORK EQUIPMENT CLEARANCE

    Precautions to avoid hitting work equipment in areas with height restrictions.

    BRAKE USAGE METHOD

    Proper techniques for applying brakes, including engine braking on slopes.

    WORKING ON LOOSE GROUND

    Safety measures for operating on soft ground, edges of cliffs, and potential collapse areas.

    PARKING THE MACHINE

    PARKING PROCEDURE

    Steps for safely parking the machine on level ground or slopes.

    WORK EQUIPMENT POSTURE FOR PARKING

    Recommended position for the work equipment when parking.

    LOCKING MECHANISM OPERATION

    Identification of the safety lock lever and its operation.

    Komatsu WA420-3 Specifications

    General IconGeneral
    BrandKomatsu
    ModelWA420-3
    CategoryCompact Loader
    LanguageEnglish

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