Avance plus WA450-3 Manual

CEAM003800
WA450 3
-
WHEEL LOADER
SERIAL NUMBERS WA450-3MC - A31001 and up
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 add 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, periodic revisions may be made to this publication. It is
recommended that customers contact their distributor for information on the latest revision.
FEB 1999 Copyright 1999 Komatsu America International Company

PRODUCT PUBLICATIONS INFORMATION
VARIOUS PRODUCT PARTS & SERVICE PUBLICATIONS ARE AVAILABLE TO ALL KOMATSU CONSTRUCTION
EQUIPMENT OWNERS, INCLUDING OPERATION AND MAINTENANCE MANUALS, PARTS BOOKS AND SHOP
MANUALS.
SPECIAL PUBLICATIONS SUCH AS SERVICE TOOL, AIR CONDITIONING, AND TURBOCHARGER SERVICE
MANUALS ARE ALSO AVAILABLE AS WELL AS SELECTED OPERATION & SERVICE MANUALS IN FOREIGN
LANGUAGES.
THE PUBLICATIONS LISTED BELOW ARE AVAILABLE FOR THIS PARTICULAR MACHINE(S).
DESCRIPTION FORM NUMBER
PARTS BOOK - PAPER:
Chassis and Engine .....................................................BEPB005600
PARTS BOOK - MICROFICHE:
Chassis and Engine .....................................................BEPM005600
OPERATION AND MAINTENANCE MANUAL:
Chassis and Engine .....................................................CEAM003700
SHOP MANUAL:
Chassis ..............................................................CEBM003500
Engine ...............................................................CEBM000601
STANDARD MAN-HOUR GUIDE:
Chassis ..............................................................
Engine ...............................................................N/A
SAFETY MANUAL ..........................................................WLT70-1
PARTS AND SERVICE PUBLICATIONS CAN ONLY BE ACQUIRED BY AUTHORIZED KOMATSU DISTRIBUTORS,
USING THE KOMATSU AMERICA INTERNATIONAL COMPANY PARTS INVENTORY PROCESSING SYSTEM
(PIPS).
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IS SHOWN ON THE REVERSE SIDE OF THIS PAGE.
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KDC91D 081696 CURRENT PRICES WILL BE CHARGED

WA450-3MC 0-1
INTRODUCTION

INTRODUCTION
WA450-3MC0-2
1. FOREWORD
This manual describes the procedures for the operation, handling,lubrication, maintenance, checking, and adjustment.
The manual will help the operator and maintenance personnel realize peak performance through effective, economical
and safe machine operation and maintenance.
Keep this manual handy and have all personnel read it periodically. If this manual becomes lost or illegible, request a
replacement manual from your local distributor.
If you sell the machine, give this manual to the new owner.
Because of continual design changes in this machine, the changes may not be reflected in this manual. Consult your
local distributor or Komatsu America International Company for the latest available information in this manual.
WARNING
Improper operation and maintenance of this machine can be hazardous and could result in serious injury
or death.
Operators and maintenance personnel must read this manual thoroughly before operating or maintaining
this machine.
This manual should be kept near the machine for reference and periodically reviewed by all personnel who
come across it.
Some actions involved in the operation and maintenance can cause a serious accident, if they are not
performed in the manner described in this manual.
The procedures and precautions given in this manual apply only to intended uses of the machine. If you
use your machine for any unintended uses not specifically prohibited, you must be sure that it is safe for
you and others. In no event should you or others engage in prohibited uses or actions described in this
manual.
Komatsu America International Company delivers machines that comply with all applicable regulations
and standards of the country to which it has been shipped. If this machine has been purchased in another
country or purchased from someone in another country, it may lack certain safety features and
specifications that are needed for use in your country. If there is any question about whether your product
complies with the applicable standards and regulations of your country, consult your local distributor or
Komatsu America International Company before operating the machine.
The description of safety is given in SAFETY INFORMATION on page 0-3 and in SAFETY from page 1-1.

INTRODUCTION
WA450-3MC 0-3
2. SAFETY INFORMATION
Most accidents are caused by the failure to follow fundamental safety rules for the operation and maintenance of the
machines. To avoid accidents, read andfollow all precautions and warnings in this manual and on the machine before
performing maintenance and machine operations.
To identify safety messages in this manual and on machine product graphics, the following signal words are used.
DANGER! - This word is used on safety messages and product graphics where thereis a high
probability of serious injury or death if the hazard is not avoided. These safety
messages and product graphics usually describe precautions that must be taken
to avoid the hazard. Failure to avoid this hazard may also result in serious damage
to the machine.
WARNING! - This word is used on safety messages and product graphics where there is a
potentially dangerous situation, which could result in serious injury or death if
the hazard is not avoided. These safety messages and product graphics usually
describe precautions that must be taken to avoid thehazard. Failure to avoid this
hazard may also result in serious damage to the machine.
CAUTION! - This word is used on safety messages and product graphics for hazards, which
could result in minor or moderate injury if the hazard is not avoided. These safety
messages and product graphics might also use this word for hazards where the
only result could be damage to the machine.
NOTE - This word is used for precautions that must be taken to avoid actions, which could
shorten the life of the machine.
Safety precautions are described in SAFETY, which begins on page 1-1.
Komatsu America International Company cannot predict every circumstance that mightinvolve a potential hazard in
operation and maintenance. Therefore, the safety message in this manual and on the machine may not include all
possiblesafety precautions. If any procedures or actions not specifically recommended or allowed in this manual are
used, you must be sure that you and others can do such procedures and actions safely and without damaging the
machine. If you are unsure about the safety of some procedures, contact your local distributor or Komatsu America
International Company.

INTRODUCTION
WA450-3MC0-4
3. INTRODUCTION
3.1 INTENDED USE
This WHEEL LOADER is designed to be used mainly for the following work:
Digging
Leveling
Pushing
Loading
For details of the operating procedures, see 12.10 WORK POSSIBLE USING WHEEL LOADER on page 2-64.
3.2 FEATURES
Curved glass and improved sealing for reduced noise, low vibration cab, viscous mount.
Console and steering post with unencumbered foot area providing the same comfortable feeling as in an
automobile.
Fully hydraulic brake system, which does not require draining water or concerns of rust and freezing.
Maintenance-free, wet-type disc parking brake (acts also as emergency brake).
Large capacity pump and 2-stage hydraulic system for reduced cycle time and increased productivity.
One-touch panel control and air conditioner with new refrigerant installed.
Full fender system installed to help prevent mud or water from splashing on or around the machine.
3.3 BREAKING IN A NEW MACHINE
Your machine has been thoroughly adjusted and tested before shipment. However, operating the machine under severe
conditions at the beginning can adversely affect the performance and shorten the machine life. Be sure to break in the
machine for the initial 100 hours (as indicated by the service meter).
During breaking in:
After starting, let the engine idle for 5 minutes to allow proper engine warm up prior to actual operation.
Avoid operation with heavy loads or at high speeds.
Avoid sudden starts or acceleration, unnecessarily abrupt stops and sharp steering except in cases of
emergency.
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 America International Company cannot bear any responsibility for safety. All consideration of safety in such
operations is the responsibility of the user.
Operations that are prohibited in this manual must never be carried out under any circumstance.

INTRODUCTION
WA450-3MC 0-5
4. LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND
DISTRIBUTOR
4.1 MACHINE SERIAL NO. PLATE POSITION
4.1.1 POSITION OF PLATE (A)
On the center right of the front frame.
4.1.2 POSITION OF STAMP (B)
This is stamped on the center of the front frame on the right hand
side of the machine.
4.2 ENGINE SERIAL NO. PLATE POSITION
As viewed from the left-hand side of the machine.
4.3 TABLE TO ENTERSERIAL NO. DISTRIBUTOR
Machine P.I.N.:
Engine serial No.:
Distributor name:
Address: Phone:
Service personnel for your machine:

INTRODUCTION
WA450-3MC0-6
REMARKS

INTRODUCTION
WA450-3MC 0-7
5. TABLE OF CONTENTS
1. FOREWORD ............................................................................0-2
2. SAFETY INFORMATION ...................................................................0-3
3. INTRODUCTION .........................................................................0-4
3.1 INTENDED USE ......................................................................0-4
3.2 FEATURES ..........................................................................0-4
3.3 BREAKING IN A NEW MACHINE .........................................................0-4
4. LOCATION OF PLATES, TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR ......................0-5
4.1 MACHINE SERIAL NO. PLATE POSITION .................................................0-5
4.1.1 POSITION OF PLATE (A) ........................................................0-5
4.1.2 POSITION OF STAMP (B)........................................................0-5
4.2 ENGINE SERIAL NO. PLATE POSITION...................................................0-5
4.3 TABLE TO ENTER SERIAL NO. DISTRIBUTOR ............................................0-5
5. TABLE OF CONTENTS ....................................................................0-7
6. GENERAL PRECAUTIONS ................................................................0-16
7. PRECAUTIONS DURING OPERATION ......................................................0-22
7.1 BEFORE STARTING ENGINE ..........................................................0-22
7.2 OPERATING MACHINE ...............................................................0-23
7.3 TRANSPORTATION ...............................................................0-32
7.4 BATTERY .......................................................................0-33
7.5 TOWING ........................................................................0-35
8. PRECAUTIONS FOR MAINTENANCE .......................................................0-36
8.1 BEFORE CARRYING OUT MAINTENANCE ...........................................0-36
8.2 DURING MAINTENANCE............................................................0-41
8.3 TIRES ..........................................................................0-46
10. GENERAL VIEW .........................................................................2-2
10.1 GENERAL VIEW OF MACHINE.......................................................2-2
10.2 GENERAL VIEW OF CONTROLS AND GAUGES ........................................2-3
11. COMPONENT EXPLANATION ..............................................................2-4
11.1 MACHINE MONITOR ...............................................................2-4
11.1.1 WARNING DISPLAYS ...........................................................2-6
11.2 SWITCHES ......................................................................2-15
11.3 CONTROL LEVERS, PEDALS ......................................................2-23
11.4 STEERING COLUMN TILT LEVER ...................................................2-28
11.5 CAP WITH LOCK .................................................................2-29
11.5.1 METHOD OF OPENING AND CLOSING THE CAP WITH LOCK .......................2-29
11.6 SAFETY BAR ....................................................................2-30
11.7 TOWING PIN.....................................................................2-30
11.8 GREASE PUMP ..................................................................2-31
11.9 BACKUP ALARM .................................................................2-31
11.10 FUSE ...........................................................................2-32
11.10.1 FUSE CAPACITY AND CIRCUIT NAME ...........................................2-32
11.11 SLOW-BLOW FUSE ...............................................................2-33
11.12 MANUAL STORAGE PLACE ........................................................2-34
11.13 ELECTRIC POWER (with ROPS CAB) ................................................2-34
12. OPERATION ............................................................................2-35
12.1 CHECKS BEFORE STARTING ......................................................2-35