Electronic Control System - Komatsu PC130-7 Operation & Maintenance Manual

TROUBLES AND ACTIONS
Problem
Abnormal noise generated (combus-
tion or mechanical)

Electronic Control System

When the user code is shown on the display portion of the machine monitor, take the respective measures shown
in the self-diagnosis chart below.
Machine Monitoring System
Monitor display
E02 Error in pump control system
E03 Error in swing brake system
E05 Error in governor system
When no user code is displayed but work equip-
ment and swing cannot be operated
(*) For details of the method of handling the emergency pump drive switch and swing holding brake cancel switch,
see SWITCHES (3-17).
3-132
Main causes
•Low-grade fuel being used
•Overheating
•Damage inside muffler
•Excessive valve clearance
Failure mode
When emergency pump drive switch is moved up, normal
operations are possible, but have inspection carried out imme-
diately. (*)
Move swing holding brake release switch up to release brake.
When applying swing brake, operate swing lock switch manu-
ally. Depending on cause of failure, it may be impossible to
release brake. In any case, have inspection carried out imme-
diately. (*)
Governor controller does not work. Operate governor lever
manually. To secure at FULL position, there is a hole in the
bracket to install the lock bolt. In this case, have inspection car-
ried out immediately.
Have inspection carried out immediately.
OPERATION
Remedy
•Change to specified fuel
•Refer to "Radiator water level moni-
tor lights up" as above
•Replace muffler
(•Adjust valve clearance)
Action
3