Komatsu PC80MR-5E0, Operation & Maintenance Manual

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Problem Main causes Remedy
Exhaust gas turns black from time to
time. Clogged air cleaner element Clean or replace. See WHEN RE-
QUIRED.
Defective nozzle Replace nozzle. (*)
Defective compression Adjust valve clearance. (*)
Combustion makes breathing sound
from time to time. Defective nozzle Replace nozzle. (*)
Abnormal noise is generated.
(Combustion or mechanical) Low grade fuel being used Replace with specified fuel.
Overheating See the preceding section on “The
graduation of engine coolant temper-
ature gauge indicates red range”.
KDPF broken internally Replace KDPF. (*)
Excessive valve clearance Adjust valve clearance. (*)
IF MACHINE MONITOR SHOWS WARNING DISPLAY
When the action level display (1) or caution lamp (2) is dis-
played on the machine monitor, press the function switch “F3”
to display “Current Abnormality” screen and check the details
and remedy.
Take the actions according to the message shown on the ma-
chine monitor, and check the failure code, and then ask your
Komatsu distributor for repair, as necessary.
When “DXA8KA” or “DXA8KB” is on “Current Abnormality”
screen, turning the pump secondary drive switch to upper
(emergency) position enables operations temporarily.
For details of the pump secondary drive switch, see “PUMP
SECONDARY DRIVE SWITCH”.
Immediately ask your Komatsu distributor for an inspection and
repair after the operation.
Telephone number for the point of contact if an error occurs
When an error screen is displayed on the machine monitor,
press the function switch “F3” to display “Current Abnormality”
screen, and the telephone number (3) for the point of contact is
displayed in the message column at the bottom of the screen.
REMARK
If no point of contact telephone number is registered, no tele-
phone number is displayed.
Ask your Komatsu distributor for the telephone number regis-
tration if necessary.
TROUBLES AND ACTIONS OPERATION
3-198
WENAM00241