Other Trouble - Komatsu PW160-7H Operation & Maintenance Manual

OPERATION
4. Remove the other clip of booster cable (A) from the positive
(+) terminal of the problem machine.

OTHER TROUBLE

ELECTRICAL SYSTEM
Always contact your Komatsu distributor when dealing with
●
these items.
In cases of abnormalities or causes which are not listed
●
below, please contact your Komatsu distributor for repairs.
Problem
Lamp does not glow brightly even
when the engine runs at high
speed
Lamp flickers while engine is run-
ning
Charge level monitor does not go
out even when engine is running
Abnormal noise is generated from
alternator
Starting motor does not turn when
starting switch is turned to ON
Pinion of starting motor keeps
going and out
Starting motor turns engine slug-
gishly
Starting motor disengages before
engine starts
Pre-heating monitor does not light
Oil pressure monitor does not light
up when engine is stopped (start-
ing switch at ON position)
Outside of electrical heater is not
warm when touched by hand
PW160-7H VEAM390100
Main causes
Defective wiring, deterioration of
●
battery
Loose fan belt
●
Defective alternator
●
Defective wiring
●
Defective alternator
●
Defective wiring
●
Defective starting motor
●
● Insufficient battery charge
Insufficient battery charge
●
Defective safety relay
●
Insufficient battery charge
●
● Defective starting motor
Defective wiring, defective ring
●
gear pinion
Insufficient battery charge
●
Defective wiring
●
Defective heater relay
●
Defective monitor
●
Defective monitor
●
Defective caution lamp switch
●
Defective wiring
●
Disconnection in electric heater
●
Defective operation of heater
●
relay switch
TROUBLESHOOTING
Remedy
( Check, repair loose terminals,
•
disconnections, replace battery)
Check fan belt tension, replace
•
( Replace)
•
( Check, repair)
•
( Replace)
•
( Check, repair)
•
( Replace)
•
Charge
•
Charge
•
( Replace)
•
Charge
•
( Replace)
•
( Check, repair)
•
Charge
•
( Check, repair)
•
( Replace)
•
( Replace)
•
( Replace)
•
( Replace)
•
( Check, repair)
•
( Replace)
•
( Replace)
•
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