Other Trouble - Komatsu Avance WA500-3 Operation & Maintenance Manual

OPERATION

OTHER TROUBLE

ELECTRICAL SYSTEM
( ): Always contact your Komatsu distributor when dealing with these items.
In cases of problems or causes which are not listed below, contact your Komatsu distributor for repairs.
Problem
Lamp does not glow brightly even
when the engine runs at hight
speed
Lamp flickers while engine is
running
Even when the engine is rotating,
the charge caution pilot lamp does
not go out
Abnormal noise is generated from
alternator
Starting motor does not turn when
starting switch is turned to ON
Pinion of starting motor keeps
going in and out
Starting motor turns engine
sluggishly
Starting motor disengages before
engine starts
Engine pre-heating pilot lamp does
not light up
Even when engine is stopped,
charge caution pilot lamp does not
light up (starting switch at ON
position)
Main causes
Defective wiring
Defective adjustment of belt
tension
Defective alternator
Defective wiring
Defective alternator
Defective wiring
Insufficient battery charge
Insufficient battery charge
Insufficient battery charge
Defective starting motor
Defective wiring
Insufficient battery charge
Defective wiring
Defective glow relay, glow
controller, water temperature
sensor
Defective Engine pre-heating
pilot lamp
Defective wiring
Defective monitor
TROUBLESHOOTING
Remedy
( Check, repair loose terminals,
disconnections)
Adjust alternator belt tension
For details, see EVERY 250
HOURS SERVICE
( Replace)
( Check, repair)
( Replace)
( Check, repair)
Charge
Charge
Charge
( Replace)
( Check, repair)
Charge
( Check, repair)
( Replace)
( Replace)
( Check, repair)
( Replace)
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