Komatsu WA380-8 Manual

CEAM030202
Operation&Maintenance
Manual
WA380 -8
WHEEL LOADER
SERIAL NUMBERS WA380-8 A74001 and up
ENGINE 6D107E-3
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 2017 Komatsu
Printed in U.S.A
October 2017 Komatsu America Corp.

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CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some ofits
constituents are known to the State
of California to cause cancer, birth
defects, and other reproductive
harm.
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals and
related accessories contain lead
and lead compounds, chemicals
known to the State of California
to cause cancer, birth defects and
reproductive harm.
Wash hands after handling.
FOREWORD
1-1
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READ THIS MANUAL
This manual gives details of the operation and methods of inspection and maintenance for this machine that
must be observed in order to use the machine safely. Most accidents are caused by the failure to follow funda-
mental safety rules for the operation and maintenance of machines.
Read, understand and follow all precautions and warnings in this manual and on the machine before performing
operation and maintenance. Failure to do so may result in serious injury or death.
Komatsu cannot predict every circumstance that might involve a potential hazard when the machine is used.
Therefore, the safety messages in this manual and on the machine may not include all possible safety precau-
tions.
If you perform any operation, inspection, or maintenance under conditions that are not described in this manual,
understand that it is your responsibility to take the necessary precautions to ensure safety. In no event should
you or others engage in the prohibited uses or actions described in this manual. It is dangerous to perform im-
proper operation and maintenance of the machine. It may cause serious injury or death.
If you sell the machine, be sure to give this manual to the new owner together with the machine.
Always keep this Operation and Maintenance Manual in the in-
dicated location so that all relevant personnel can read it at any
time.
Keep it in the storage door (1) beside the shoes box on the left
side of the operator's seat.
If this manual is lost or damaged, contact Komatsu or your Komatsu distributor and tell them about the machine
model name and the serial No. immediately to arrange for its replacement.
For details regarding the machine model name and the serial No., see the machine serial No. plate. In order to
arrange the proper Operation and Maintenance Manual, you will need to provide the machine model name and
the serial No.
This manual uses the International System of Units (SI) for units of measurement. For reference, units that have
been used in the past are given in { }.
The explanations, values, and illustrations in this manual have been prepared based on the latest information
available as of the date of its publication. Continuing improvements in the design of this machine may lead to
additional changes that are not reflected in this manual. If there is any question or suggestion, consult your Ko-
matsu distributor.
The numbers in the illustrations correspond to the numbers in ( ) in the text. (Example: 1 → (1))
Komatsu 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, it may lack certain safety devices and
specifications that are necessary 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 Komatsu distributor before
operating the machine.
READ THIS MANUAL FOREWORD
1-2
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SAFETY INFORMATION
To enable you to use the machine safely, and to prevent personal injury to operators, service personnel or by-
standers, the precautions and warnings included in this manual and the safety signs attached to the machine
must always be observed.
To identify important safety messages in the manual and on the machine labels, the following signal words are
used.
The "Safety Alert Symbol" identifies important safety messages on machines, in manuals, and elsewhere. When
you see this symbol, be alert to the risk of personal injury or death. Follow the instructions in the safety mes-
sage.
This signal word indicates an imminently hazardous situation which, if not avoided, will result
in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury. It may also be used to alert against unsafe practices that may
cause property damage.
The following signal words are used to alert you to information that must be followed to avoid damage to the
machine.
If precautions described are not observed, the machine may be damaged or the service life
may be reduced.
This word is used for information that is useful to know.
FOREWORD SAFETY INFORMATION
1-3
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INTRODUCTION
MAIN USE OF MACHINE
This Komatsu machine is designed to be used mainly for the following work:
• Digging work
• Leveling work
• Dozing work
• Loading work
For details of the work procedure, see “RECOMMENDED APPLICATIONS”.
DIRECTIONS OF MACHINE
(A) Front
(B) Rear
(C) Left
(D) Right
(E) Bucket
(F) Operator's seat
In this manual, the directions of the machine (front, rear, left, right) are determined according to the view from
the operator's seat in the direction of travel (front) of the machine.
VISIBILITY FROM OPERATOR'S SEAT
This machine complies with the visibility standard (ISO5006).
This machine maintains a proximity visibility of a height of 1.5 m {4 ft 11 in} at a point 1 m {3 ft 3 in} away from
the outside surface of the machine, and a visibility for a radius of 12 m {39 ft 4 in}.
Protective structures
This machine is equipped with a structure to protect the operator (ROPS) conforming to ISO3471.
INTRODUCTION FOREWORD
1-4
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ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS
EMISSION
About Engine Technology
This engine technology combines a Komatsu Diesel Particulate Filter (KDPF) and Komatsu’s Urea Selective
Catalytic Reduction (SCR) to conform EPA Tier4 Final emission regulation in North America.
• Komatsu Diesel Particulate Filter (KDPF): A device which captures diesel particular matter or soot in the
exhaust gas to purify exhaust gas. If soot is accumulated to a certain level in the filter, a purification process
to burn the soot is performed automatically to keep the filtering performance of KDPF high.
• Komatsu’s Urea SCR system: A device which decomposes the toxic nitrogen oxides (NOx) mixed in the
exhaust gas into harmless nitrogen and water. Spraying the reagent (Diesel Exhaust Fluid) into the exhaust
gas produces a reaction between the nitrogen oxides and ammonia generated from the urea solution and
decomposes the nitrogen oxides into nitrogen and water.
About Diesel Exhaust Fluid (DEF)
Diesel Exhaust Fluid is the aqueous urea solution for the SCR system.
DEF is the abbreviation for Diesel Exhaust Fluid, and is represented as DEF throughout this manual.
DEF is a colorless transparent and aqueous urea solution made with 32.5 % urea (AUS32) and 67.5 % deion-
ized water. Urea as main constituent is a material which is used for cosmetics, medical and pharmaceutical
products, and fertilizer, etc.
Commercial DEF, that is API (American Petroleum Institute) certified and fulfills the quality requirements in ac-
cordance with ISO 22241-1, is to be used. The certified DEF has the API DIESEL EXHAUST FLUID Certifica-
tion Mark shown as follows. Look for the API DEF Certification Mark when purchasing DEF.
API Diesel Exhaust Fluid Certification Mark is the trade mark of
API (American Petroleum Institute).
FOREWORD ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION
1-5
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PRODUCT INFORMATION
When requesting service or ordering replacement parts, inform your Komatsu distributor of the following items.
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERI-
AL NO. PLATE
This is located at the center of the front frame on the right side of the machine.
The design of the nameplate differs according to the district.
LOCATION OF ENGINE NUMBER PLATE
This is located at the right top of the engine rear part on the right side of the machine.
PRODUCT INFORMATION FOREWORD
1-6
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SERVICE METER LOCATION
It is at the center bottom of the machine monitor.
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR
Machine serial No.
Engine serial No.
Product identification
number (PIN)
Distributor name
Address
Phone/Fax
Service personnel
FOREWORD PRODUCT INFORMATION
1-7
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TABLE OF CONTENTS
FOREWORD.................................................................................................................................................... 1-1
READ THIS MANUAL............................................................................................................................... 1-2
SAFETY INFORMATION .......................................................................................................................... 1-3
INTRODUCTION ...................................................................................................................................... 1-4
MAIN USE OF MACHINE .................................................................................................................. 1-4
DIRECTIONS OF MACHINE.............................................................................................................. 1-4
VISIBILITY FROM OPERATOR'S SEAT ............................................................................................ 1-4
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION..................................................... 1-5
PRODUCT INFORMATION....................................................................................................................... 1-6
LOCATION OF PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE ........ 1-6
LOCATION OF ENGINE NUMBER PLATE ........................................................................................ 1-6
SERVICE METER LOCATION........................................................................................................... 1-7
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR.............................................................. 1-7
SAFETY........................................................................................................................................................... 2-1
SAFETY LABELS ..................................................................................................................................... 2-2
LOCATION OF SAFETY LABELS...................................................................................................... 2-3
CONTENTS OF SAFETY LABELS .................................................................................................... 2-5
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE .................................... 2-13
PRECAUTIONS BEFORE STARTING OPERATION........................................................................ 2-13
PREPARATIONS FOR SAFE OPERATION ..................................................................................... 2-13
PRECAUTIONS TO PREVENT FIRE............................................................................................... 2-14
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE............................................................. 2-16
DO NOT GET CAUGHT................................................................................................................... 2-18
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES........................................................ 2-19
UNAUTHORIZED MODIFICATION .................................................................................................. 2-19
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS .................................................... 2-19
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING..................................................... 2-19
PRECAUTIONS FOR OPERATION ........................................................................................................ 2-20
PRECAUTIONS FOR JOBSITE....................................................................................................... 2-20
START ENGINE............................................................................................................................... 2-22
PRECAUTIONS FOR OPERATION ................................................................................................. 2-24
PRECAUTIONS FOR TRANSPORTATION...................................................................................... 2-29
TOWING AND BEING TOWED........................................................................................................ 2-30
PRECAUTIONS FOR MAINTENANCE................................................................................................... 2-31
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE ................................... 2-31
PRECAUTIONS FOR CHECK AND MAINTENANCE ...................................................................... 2-35
TIRES .............................................................................................................................................. 2-39
PRECAUTIONS FOR DEF...................................................................................................................... 2-40
GENERAL CHARACTER AND PRECAUTIONS FOR HANDLING .................................................. 2-40
PRECAUTIONS FOR ADDING........................................................................................................ 2-40
PRECAUTIONS FOR STORING...................................................................................................... 2-40
PRECAUTIONS FOR FIRE HAZARD AND LEAKAGE .................................................................... 2-40
OTHER PRECAUTIONS.................................................................................................................. 2-40
OPERATION .................................................................................................................................................... 3-1
GENERAL VIEW....................................................................................................................................... 3-2
MACHINE EQUIPMENT NAME ......................................................................................................... 3-2
CONTROLS AND GAUGES NAMES................................................................................................. 3-3
OTHER EQUIPMENT NAME............................................................................................................. 3-7
EXPLANATION OF COMPONENTS....................................................................................................... 3-10
EXPLANATION OF MACHINE MONITOR EQUIPMENT ................................................................. 3-10
SWITCHES...................................................................................................................................... 3-92
CONTROL LEVERS AND PEDALS............................................................................................... 3-107
OTHER EQUIPMENT .....................................................................................................................3-111
MACHINE OPERATIONS AND CONTROLS ........................................................................................ 3-149
CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE ...................................................... 3-149
METHOD FOR STARTING ENGINE.............................................................................................. 3-173
TABLE OF CONTENTS FOREWORD
1-8
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