Other Troubles; Electrical Circuit - Komatsu PC14R-3 Operation & Maintence Manual

TROUBLESHOOTING

3.7.6 OTHER TROUBLES

Always contact your Komatsu Dealer when you have to carry out this operation.
q
If the anomaly or its cause is not included in the table below, contact your Komatsu Dealer for the necessary
q
repair.
3.7.6.1

ELECTRICAL CIRCUIT

TROUBLE
Lights do not work satisfactorily even
with engine running at high speed.
Lights come on intermittently with
engine running.
Battery charge warning light does not
go out even with engine running.
Alternator emits abnormal noise.
Starter does not turn with ignition
switch in position ON.
Starter pinion engages
disengages repeatedly.
Starter makes engine run slowly.
Starter disengages before engine
start.
Preheating warning light does not
come on.
Engine oil pressure warning light does
not come on when engine stops
(ignition key in position ON).
166
CAUSE
(•) Faulty cables
(•) Faulty fan belt tension.
(•) Blown fuse
• Faulty alternator.
• Faulty cables.
• Faulty alternator.
• Faulty cables.
• Battery charge insufficient.
• Faulty fuse.
and • Battery charge insufficient.
• Battery charge insufficient.
• Faulty starter.
• Faulty cables.
• Battery charge insufficient.
• Faulty cables.
• Faulty bulb.
• Faulty bulb.
• Faulty oil pressure switch.
SOLUTION
(•) Check and repair
terminals and connections.
• Adjust fan belt tension.
For details, see "EVERY
HOURS OF OPERATION"
• Change.
(•) Change.
(•) Check and repair.
(•) Change.
(•) Check and repair.
• Charge battery.
• Change.
• Charge battery.
• Charge battery.
(•) Change.
(•) Check and repair.
• Charge battery.
(•) Check and repair.
(•) Change.
(•) Change.
(•) Change.
any loose
500
WEAM009300