Other Troubles; Electrical Circuit - Komatsu PC16R-3 Operation & Maintenance Manual

3.7.6 OTHER TROUBLES

Always contact your Komatsu Distributor 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 Distributor 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 en-
gine 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 and disengag-
es 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 (igni-
tion key in position ON).
CAUSE
(•) Faulty cables
(•) Faulty fan belt tension.

(•) Blown fuse
• Faulty alternator.
• Faulty cables.
• Faulty alternator.
• Faulty cables.
• Battery charge insufficient.
• Faulty fuse.
• Battery main switch turned to OFF.
• Battery charge insufficient.
• Battery charge insufficient.
• Faulty starter.
• Faulty cables.
• Battery charge insufficient.
• Faulty cables.
• Faulty bulb.
• Faulty bulb.
• Faulty oil pressure switch.
WEAM012405
TROUBLESHOOTING
SOLUTION
(•) Check and repair any loose termi-
nals 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.
• Turn the switch to ON.
• Charge battery.
• Charge battery.
(•) Change.
(•) Check and repair.
• Charge battery.
(•) Check and repair.
(•) Change.
(•) Change.
(•) Change.
500
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