Other Trouble; Electrical System - Komatsu Galeo D61EX-15 Operation & Maintenance Manual

TROUBLESHOOTING

OTHER TROUBLE

ELECTRICAL SYSTEM

q ( ): Always contact your Komatsu distributor when dealing with these items.
q In cases of problem 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 high speed
Lamp flickers while engine is run-
ning
Battery charge circut caution lamp
dose 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
in and out
Starting motor turns engine slug-
gishly
Starting motor disengages before
engine starts
Engine preheating pilot lamp does
not light up
(When the temperature of the
engine coolant exceed 20°C (68°F),
this condition is normal)
Air conditioner operation is defective
3-142
Main cause
•Defective wiring
•Defective adjustment of fan belt
tension
•Defective°belt
•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 timer
•Defective monitor
•Disconnection in glow plug
•Blown fuse
•Insufficient battery charge
•Defective air conditioner switch
•Defective blower switch
•Defective compressor
OPERATION
Remedy
(•Check, repair loose terminals, dis-
connections
Check fuses and diodes in fuse
box)
•Adjust fan belt tension
For details, see EVERY 250
HOURS SERVICE
•Replace
(•Replace)
(•Check, repair
Check fuse, diode in fuse box)
(•Replace)
(•Check, repair)
•Charge
•Charge
•Charge
(•Replace)
(•Check, repair)
•Charge
(•Check, repair)
(•Replace)
(•Replace)
(•Replace)
(•Check, repair)
•Charge
(•Replace air conditioner switch)
(•Replace blower switch)
(•Replace)
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