Komatsu 930E-4SE Manual

CEAM021304
Operation & Maintenance
Manual
DUMP TRUCK
SERIAL NUMBERS A30769 - A30871
®

CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust, some of its constituents, and certain vehicle components contain or emit
chemicals known to the State of California to cause cancer, birth defects or 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 and birth defects or other reproductive harm. Wash hands
after handling.
Unsafe use of this machine may cause serious injury or death. Operators and maintenance personnel
must read and understand this manual before operating or maintaining this machine.
This manual should be kept in or near the machine for reference, and periodically reviewed by all per-
sonnel who will come into contact with it.
This material is proprietary to Komatsu America
Corp (KAC), and is not to be reproduced, used, or
disclosed except in accordance with written autho-
rization from KAC.
It is the policy of the Company to improve prod-
ucts whenever it is possible and practical to do so.
The Company reserves the right to make changes
or add improvements at any time without incurring
any obligation to install such changes on products
sold previously.
Because of continuous research and development,
periodic revisions may be made to this publication.
Customers should contact their local Komatsu dis-
tributor for information on the latest revision.
CALIFORNIA
Proposition 65 Warning
Mercury and mercury compounds are known to the State of California to cause developmental prob-
lems. This machine may be equipped with optional HID lamps which contain mercury. There is no risk
of exposure unless the lamps are broken. However, the lamps must be reused, recycled or properly
disposed of in accordance with Local, State and Federal Laws at the end of their useful lives.

NON-OEM PARTS IN CRITICAL SYSTEMS
For safety reasons, Komatsu America Corp. strongly recommends against the use
of non-OEM replacement parts in critical systems of all Komatsu equipment. Critical
systems include but are not limited to steering, braking and operator safety sys-
tems.
Replacement parts manufactured and supplied by unauthorized sources may not be
designed, manufactured or assembled to Komatsu's design specifications; accord-
ingly, use of such parts may compromise the safe operation of Komatsu products
and place the operator and others in danger should the part fail.
Komatsu is also aware of repair companies that will rework or modify an OEM part
for reuse in critical systems. Komatsu does not generally authorize such repairs or
modifications for the same reasons as noted above.
Use of non-OEM parts places full responsibility for the safe performance of the Kom-
atsu product on the supplier and user. Komatsu will not in any case accept responsi-
bility for the failure or performance of non-OEM parts in its products, including any
damages or personal injury resulting from such use.

OM1074 8/11 Introduction - Section 10
Page 10-1
INTRODUCTION
FOREWORD
This manual is written for use by the operator and/or the service technician. It is designed to help these persons to
become fully knowledgeable of the truck and all of its systems in order to keep it operating safely and efficiently. All
operators and maintenance personnel should read and understand the information in this manual before operating
the truck or performing maintenance and/or operational checks on the truck. All safety notices, warnings, and
cautions should be understood and followed when operating the truck or performing repairs on the truck.
A product identification plate is located on the frame in front of the right side front wheel. It designates the Truck
Model Number, Product Identification Number (vehicle serial number), and Maximum GVW (Gross Vehicle Weight)
rating.
The KOMATSU truck model designation consists of three numbers and one letter (i.e. 930E).
The three numbers represent the basic truck model.
The letter “M”, when present, designates a Mechanical drive system.
The letter “E”, when present, designates an Electrical wheel motor drive system.
The Product Identification Number (vehicle serial number) contains information which identifies the original
manufacturing bill of material for this unit. This complete number will be necessary for proper ordering of many
service parts and/or warranty consideration.
The Gross Vehicle Weight (GVW) is what determines the load on the drive train, frame, tires, and other
components. The vehicle design and application guidelines are sensitive to the maximum GVW.
GVW is total weight: empty vehicle weight + fuel & lubricants + payload.
To determine the allowable payload, fill all lubricants to the proper level and fill the fuel tank of an empty truck
(which includes all accessories, body liners, tailgates, etc.), and then weigh the truck. Record this value and
subtract it from the GVW. The result is the allowable payload.
NOTE: Accumulations of mud, frozen material, etc, become part of the GVW and reduces the allowable payload.
To maximize payload and to keep from exceeding the maximum GVW rating, these accumulations should be
removed as often as practical.
Exceeding the allowable payload will reduce the expected life of truck components.

Introduction - Section 10 8/11 OM1074
Page 10-2
TRUCK MODEL ILLUSTRATION
KOMATSU MODEL 930E-4SE DUMP TRUCK

OM1074 8/11 Introduction - Section 10
Page 10-3
ABOUT THIS MANUAL
The front cover of this manual includes a form number. This form number should be referenced when ordering
additional copies of this manual or for any other correspondence regarding the coverage in this manual.
Direct all inquiries to:
Komatsu America Corp.
Datakom, Peoria Technical Publications
P.O. Box 240
Peoria, IL 61650-0240
(309)-672-7072 - FAX
This first section is an Introduction to the manual. It contains the Table of Contents for locating specific areas of
interest. Other sections include:
• Torque Tables & Conversion Charts
• Safety
• Warnings and Cautions
• Operating Instructions
• Operator Cab and Controls
• Lubrication and Service
• Automatic Lubrication System
• Components & Specifications
• Payload Meter III
• AM/FM Radio / CD/Player
When searching for a specific area of interest, go first to the Table of Contents to locate the section in which the
subject might generally be included. Then, find a subject description that most closely describes the specific area
of interest and go to that page. Section numbers and page numbers are located at the top, outside corner of the
page.
At the top, inside corner of the page is a document (module) number. If there is ever a question regarding the
information in a particular section, refer to the document (module) number, the manual form number, and use the
address shown above to correspond. If there is a date (month/year) behind the document (module) number, that
date indicates the latest revision date of that page.
The illustrations used in this manual are TYPICAL of the component shown and may not be an exact reproduction
of what is found on the truck.
This manual shows dimensioning of U.S. standard and metric (SI) units throughout. All references to “right,” “left,”
“front,” or “rear” are made with respect to the operator's normal seated position unless specifically stated otherwise.
When assembly instructions are provided without references to specific torque values, standard torque values
should be used. Standard torque values are shown in torque charts in the Standard Charts and Tables section in
this manual and in the General Information section of the truck shop manual. Specific torques, when provided in
the text, are in bold face type, such as 135 N•m (100 ft lb). All torque specifications have ±10% tolerance unless
otherwise specified.

Introduction - Section 10 8/11 OM1074
Page 10-4
ALERTS PAGE
This ALERT symbol is used in this manual, along with
the signal words “CAUTION”, “DANGER” and
“WARNING”, to alert the reader to hazards arising from
improper operating and maintenance practices.
“DANGER” identifies a specific potential hazard
WHICH WILL RESULT
in either INJURY OR DEATH
if proper precautions are not taken.
“WARNING” identifies a specific potential hazard
WHICH MAY RESULT
in either INJURY OR DEATH
if proper precautions are not taken.
“CAUTION” is used for general reminders
of proper safety practices
OR
to direct the reader’s attention to avoid unsafe
or improper practices which may result
in damage to the equipment.

OM1074 8/11 Introduction - Section 10
Page 10-5
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
TRUCK MODEL ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
ALERTS PAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-4
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-5
TORQUE TABLES AND CONVERSION CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
Safety Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
Fire Extinguishers And First Aid Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
Clothing And Personal Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-1
Leaving The Operator’s Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-2
Mounting And Dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-2
Fire Prevention For Fuel And Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-2
Precautions With High Temperature Fluids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
Asbestos Dust Hazard Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
Prevention Of Injury By Work Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
Unauthorized Modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
ROPS Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
Precautions For Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-4
Precautions For Starting The Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-4
PRECAUTIONS BEFORE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-4
Safety At The Work Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-4
Fire Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
Ventilation In Enclosed Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
Preparing For Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
Mirrors, Windows, And Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
In The Operator Cab (Before Starting The Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-5
OPERATING THE TRUCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-6
When Starting The Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-6
General Truck Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-6
Ensuring Good Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-6
Traveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-7
Traveling In Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-7
Traveling On Slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-7
Operating On Snow Or Ice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-7
Avoid Damage To The Dump Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-7

Introduction - Section 10 8/11 OM1074
Page 10-6
TABLE OF CONTENTS (cont.)
Driving Near High Voltage Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
When Dumping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
When Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
Working On Loose Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
Parking The Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-8
WORKING NEAR BATTERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-9
Battery Hazard Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-9
Starting With Booster Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-9
BEFORE PERFORMING MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10
Stopping The Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10
Warning Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10
Proper Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10
Securing The Dump Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10
WHILE PERFORMING MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Keep The Truck Clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Working Under The Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Rotating Fan And Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Waste Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-11
Adding Fuel Or Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Radiator Coolant Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Use Of Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Precautions With The Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Handling High Pressure Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Precautions With High Pressure Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-12
Performing Maintenance Near High Temperature Or High Pressure . . . . . . . . . . . . . . . . . . . 20-12
TIRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-13
Handling Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-13
Storing Tires After Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-13
WHEN REPAIRS ARE NECESSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-14
SPECIAL PRECAUTIONS FOR WORKING ON AC DRIVE TRUCKS . . . . . . . . . . . . . . . . . . . . . 20-15
PRELIMINARY PROCEDURES BEFORE WELDING OR PERFORMING MAINTENANCE . . . 20-15
ENGINE SHUTDOWN PROCEDURE BEFORE WELDING OR PERFORMING
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-15
CAPACITOR DISCHARGE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-17
Necessary Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-17
Warnings And Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-18
Manual DC Link Capacitor Discharge Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-19
Failure of the Discharge System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-21
Manual Discharge of Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-22
Short Isolated Capacitor Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-24
ADDITIONAL JOB SITE RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-26