Komatsu PC128UU-2 Excavator Service Manual

Komatsu PC128UU-2 Excavator Service Manual

$34.00

Service Manual of 623 Pages for Komatsu Excavator PC128UU-2

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Description

Komatsu PC128UU-2 Excavator Service Manual

Manual for Komatsu Excavator PC128UU-2
Language: English
Publication: SEBM018506

The Komatsu PC128UU-2 Excavator Service Manual contains 623 Pages

The Manual is divided into major sections covering various components of the machine.

Table of Content of the Komatsu Excavator PC128UU-2 Manual:

01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
10 STRUCTURE AND FUNCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
20 TESTING, ADJUSTING AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
30 DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
90 OTHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1

GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
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.


TESTING, ADJUSTING AND TROUBLESHOOTING
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. Troubleshooting charts correlating “Problems” to “Causes” are also mention in this section.


DISASSEMBLY AND ASSEMBLY
KOMATSU Excavator  PC128UU-2

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.

When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage.
Always use lifting equipment which has ample capacity. Install the lifting equipment at the correct places. Use a hoist or crane and operate slowly to prevent the component from hitting any other part. Do not work with any part still raised by the hoist or crane.

PC128UU-2  Manual Extract – Troubleshooting

Display
Code
Abnormal systemNature of abnormality
71Boom RAISE stop solenoid EPC system1) Disconnection inside solenoid
2) Short circuit inside solenoid or short circuit with ground
3) Disconnection in wiring harness between C16(1), (2) – COI, or short circuit with ground
72Boom LOWER stop EPC solenoid system1) Disconnection inside solenoid
2) Short circuit inside solenoid or short circuit with ground
3) Disconnection in wiring harness between C14(1), (2) – COI, or short circuit with groud
C1Boom RAISE pressure switch and
boom LOWER pressure switch input at
same time for more than 3 seconds
Defective boom RAISE or boom LOWER pressure switch

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