00-1
PC20MRX-1
© 2000 1
All Rights Reserved
Printed in Japan 09-00(02)
SEBM016602
MACHINE MODEL
SERIAL NUMBER
PC20MRX-1
10001 and up
•
This shop manual may contain attachments and optional equipment that are not available in
your area. Please consult your local Komatsu distributor for those items you may require.
Materials and specifications are subject to change without notice.
•
PC20MRX-1 mount the 3D74E-N3A engine.
For details of the engine, see the 68E-88E Series Engine Shop Manual.
2
00-2
PC20MRX-1
CONTENTS
01 GENERAL ............................................................................................................ 01-1
10 STRUCTURE AND FUNCTION ........................................................... 10-1
20 TESTING AND ADJUSTING ................................................................. 20-1
30 DISASSEMBLY AND ASSEMBLY ..................................................... 30-1
40 MAINTENANCE STANDARD ............................................................... 40-1
90 OTHERS ............................................................................................................... 90-1
No. of page
1
SAFETY
SAFETY NOTICE
SAFETY
SAFETY NOTICE
IMPORTANT SAFETY NOTICE
Proper service and repair
is extremely
important
for safe machine
operation.
The
service and repair techniques
recommended
by Komatsu and described
in this manual
are both effective and safe. Some of these techniques
require the use of tools specially
designed by Komatsu for the specific purpose.
.
To prevent
injury to workers,
the symbol A
is used to mark safety precautions
in this
manual. The cautions accompanying
these symbols should always be followed care-
fully. If any dangerous situation arises or may possibly arise, first consider safety, and
take the necessary actions to deal with the situation.
GENERAL PRECAUTIONS
Mistakes
in operation are extremely dangerous.
Read the Operation
and Maintenance
Manual
carefully BEFORE operating
the machine.
1. Before carrying out any greasi