Komatsu PC80MR-5E0, Operation & Maintenance Manual

Page: 263 / 412

3.
Start the engine of the normal machine and run it at high idle (max. speed).
4.
Turn the starting switch of the failed machine to START position and start the engine.
If the engine does not start, try again after at least 2 minutes.
PROCEDURE FOR DISCONNECTING JUMPER CABLES
After the engine has started, disconnect the jumper cables in the reverse of the order in which they were con-
nected.
1.
Remove the clip of jumper cable (B) from revolving frame
(E) of upper structure of the failed machine.
2.
Remove the clip of jumper cable (B) from the negative (-)
terminal of battery (D) on the normal machine.
3.
Remove the clip of jumper cable (A) from the positive (+)
terminal of battery (D) on the normal machine.
4.
Remove the clip of jumper cable (A) from the positive (+)
terminal of battery (C) on the failed machine.
OTHER TROUBLE
PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM
• For the remedies indicated with (*) in the remedy column, always contact your Komatsu distributor.
• In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs.
Problem Main causes Remedy
Lamp does not glow brightly even
when the engine runs at high speeds. Defective wiring Check and repair loose terminals,
open circuit. (*)
Loose fan belt Adjust fan belt tension. See EVERY
500 HOURS MAINTENANCE.
Blown fuse Replace
Lamp flickers while engine is running. Defective wiring Check and repair loose terminals,
open circuit. (*)
Loose fan belt Adjust fan belt tension. See EVERY
500 HOURS MAINTENANCE.
Blown fuse Replace
Charge level caution lamp does not
go out even when engine is running. Defective alternator Replace. (*)
Defective wiring Check, repair. (*)
Unusual noise is generated from al-
ternator Defective alternator Replace. (*)
Starting motor does not rotate even
when starting switch is turned to
START position. Defective wiring Check, repair. (*)
Insufficient battery charge Charge battery.
Blown fuse Replace
Battery disconnect switch is at OFF
position Turn it to ON position.
Engine shutdown secondary switch is
at “ENGINE STOP” position Set it to “NORMAL” position and
close the cover.
Lock lever is in FREE position Set the lock lever to LOCK position.
Pinion of starting motor repeats en-
gaging and disengaging (rattles). Insufficient battery charge Charge battery.
OPERATION TROUBLES AND ACTIONS
3-195
WENAM00241