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 EVERY 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 EVERY 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
START 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 STOP” 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
Содержание D51EX-24
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Страница 57: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
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Страница 277: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 353: ...SPECIFICATIONS 5 1...
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Страница 367: ...REPLACEMENT PARTS 7 1...
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Страница 382: ...D51EX 24 D51PX 24 BULLDOZER Form No EENAM03560 2017 KOMATSU All Rights Reserved Printed in Belgium 01 2017...