Komatsu Utility 69001, Operation & Maintenance Manual

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OPERATION
TROUBLESHOOTING
3-117
OTHER TROUBLE 3
ELECTRICAL SYSTEM 3
q
( ): Always contact your Komatsu distributor when dealing with these items.
q
In cases of problems or causes which are not listed below, contact your Komatsu distributor for repairs.
Problem Main cause Remedy
Lamp does not glow brightly even
when the engine runs at high speed
Lamp flickers while engine is run-
ning
•Defective wiring (•Check, repair loose terminals, dis-
connections
•Check fuses and diodes in
fuse box)
Battery charge circut caution lamp
dose not go out even when engine is
running •Defective°belt
•Defective alternator
•Defective wiring •Replace
(•Replace)
(•Check, repair
Check fuse, diode in fuse box)
Abnormal noise is generated from
alternator
•Defective alternator (•Replace)
Starting motor does not turn when
starting switch is turned to ON •Defective wiring
•Insufficient battery charge (•Check, repair)
•Charge
Pinion of starting motor keeps going
in and out
•Insufficient battery charge •Charge
Starting motor turns engine slug-
gishly •Insufficient battery charge
•Defective starting motor •Charge
(•Replace)
Starting motor disengages before
engine starts •Defective wiring
•Insufficient battery charge (•Check, repair)
•Charge
Engine preheating pilot lamp does
not light up
(When the temperature of the
engine coolant exceed 20°C, this
condition is normal)
•Defective wiring
•Defective monitor
•Disconnection in glow plug (•Check, repair)
(•Replace)
(•Replace)
Air conditioner operation is defective
•Blown fuse
•Insufficient battery charge
•Defective air conditioner switch
•Defective blower switch
•Defective compressor (•Check, repair)
•Charge
(•Replace air conditioner switch)
(•Replace blower switch)
(•Replace)