Komatsu D51PX-24 User Manual

OTHER TROUBLE
PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM
•
Contact your Komatsu distributor for the remedies indicated with (*) in the remedy column.
• Ask your Komatsu distributor for repairs for problems or causes which are not listed below.
Problem Main causes Remedy
Lamp does not glow brightly even
when the engine runs at high speeds.
Defective wiring Check and repair loose terminals,
open circuit. (*)
Incorrect adjustment of belt tension Adjust alternator drive belt tension.
See EVER
Y 1000 HOURS MAINTE-
NANCE.
Lamp flickers while engine is running. Defective wiring Check and repair loose terminals,
open circuit. (*)
Incorrect adjustment of belt tension Adjust alternator drive belt tension.
See EVER
Y 1000 HOURS MAINTE-
NANCE.
Charge level caution lamp does not
go out even when engine is running.
Defective alternator Replace. (*)
Defective wiring Check, repair. (*)
Unusual noise is generated from al-
ternator
Defective alternator Replace. (*)
Starting motor does not rotate even
when starting switch is turned to
ST
ART position.
Defective wiring Check, repair. (*)
Insufficient battery charge Charge the battery.
Battery disconnect switch is at OFF
position.
Turn it to ON position.
Engine shutdown secondary switch is
at “ENGINE ST
OP” position
Set it “NORMAL” position.
Incorrect adjustment of safety switch Adjust safety switch. (*)
Pinion of starting motor repeats en-
gaging and disengaging (rattles).
Insufficient battery charge Charge the battery.
Starting motor incapable of cranking
engine smoothly
.
Insufficient battery charge Charge the battery.
Defective starting motor Replace. (*)
Starting motor disengages before en-
gine starts.
Defective wiring Check, repair. (*)
Insufficient battery charge Charge the battery.
Automatic preheating does not work. Defective wiring Check, repair. (*)
Defective heater relay Replace. (*)
Defective engine controller Check, replace. (*)
Preheating pilot lamp does not light
up.
(When engine coolant temperature is
-3
°C or below.)
Defective wiring Check, repair. (*)
Defective heater relay Replace. (*)
Defective monitor Replace. (*)
Oil pressure caution lamp does not
light up even when engine is stop-
ped.
(Starting switch is at ON position.)
Defective monitor Replace. (*)
Defective caution lamp switch Replace. (*)
OPERATION TROUBLES AND ACTIONS
3-215

Komatsu D51PX-24 Specifications

General

Brand	Komatsu
Model	D51PX-24
Category	Construction Equipment
Language	English