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FOREWORD
GENERAL
This shop manual has been prepared as an aid to improve the
quality of repairs by giving the serviceman an accurate
understanding of the product and by showing him the correct
way to perform repairs and make judgements. Make sure
you understand the contents of this manual and use it to full
effect at every opportunity.
This shop manual mainly contains the necessary technical
information for operations performed in a service workshop.
For ease of understanding, the manual is divided into the
following sections. These sections are further divided into
each main group of components.
01. GENERAL
This section lists the general machine dimensions,
performance specifications, component weights, and
fuel, coolant and lubricant specification charts.
10. STRUCTURE AND FUNCTION
This section explains the structure and function of each
component. It serves not only to give an understanding
of the structure, but also serves as reference material for
troubleshooting. This section gives the judgement stan-
dards when inspecting disassembled parts.
20. STANDARD VALUE TABLE
This section explains the standard values for new
machine and judgement criteria for testing, adjusting
and troubleshooting. This standard value table is used to
check the standard values in testing and adjusting and to
judge parts in troubleshooting.
NOTICE
Some attachments and optional parts in this shop manual may not be delivered to certain areas. If one of them is required,
consult KOMATSU distributors.
Materials and specifications are subject to change without notice.
Shop manuals are divided into the "Chassis volume" and "Engine volume". For the engine unit, see the engine volume of the
engine model mounted on the machine.
The specifications contained in this shop manual are subject to change at any time and without any advance notice. Contact
your distributor for the latest information.
00-8
30. TESTING AND ADJUSTING
This section explains checks to be made before and after
performing repairs, as well as adjustments to be made at
completion of the checks and repairs.
40. TROUBLESHOOTING
Troubleshooting charts correlating "Problems" to
"Causes" are also included in this section.
50. DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when
removing, installing, disassembling or assembling each
component, as well as precautions to be taken for these
operations.
60. MAINTENANCE STANDARD
This section gives the judgement standards when
inspecting disassembled parts.
80. AIR CONDITIONER
This section explains the structure, function testing
adjusting and troubleshooting for the air conditioning
system.
90. DIAGRAMS AND SCHEMATICS
This section has the foldout drawings for the machine.
GENERAL
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WA380-7
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