Komatsu WA600-8 Operation & Maintenance Manual page 360

TROUBLES AND ACTIONS
Problem
Lamp flickers while engine is run-
ning.
Unusual noise is generated from al-
ternator.
Battery charge level caution lamp
lights up while engine is running.
Starting motor does not rotate even
when starting switch is turned to
START position.
Pinion of starting motor repeats en-
gaging and disengaging (rattles).
Starting motor turns engine sluggish-
ly.
Starting motor disengages before
engine starts.
Preheating pilot lamp does not light
up.
Engine does not start.
("L04" lights up on monitor.)
PHENOMENA AND ACTIONS FOR CHASSIS
• 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
Transmission
Engine runs but machine does not
move.
3-292
Main causes
Defective wiring
Defective belt
Defective alternator
Defective alternator
Defective wiring
Defective belt
Defective wiring
Defective starting motor
Battery disconnect switch is at OFF
position.
Engine shutdown secondary switch
at "engine stop" position
Insufficient battery charge
Insufficient battery charge
Defective starting motor
Insufficient battery charge
Defective starting motor
Defective wiring
Insufficient battery charge
Defective wiring
Defective heater relay, intake air tem-
perature sensor, coolant temperature
sensor
Defective monitor
Damaged data in the controller
Other system troubles
Main causes
Parking brake is applied.
Directional lever or directional selec-
tor switch is not switched completely.
Lack of oil in transmission case
Remedy
Check and repair loose terminals,
open circuit. (*)
Check the belt and replace it. See
EVERY 500 HOURS MAINTE-
NANCE.
Replace. (*)
Replace. (*)
Check, repair. (*)
Check the belt and replace it. See
EVERY 500 HOURS MAINTE-
NANCE.
Check, repair. (*)
Replace. (*)
Turn it to ON position.
Set it "NORMAL" position.
Close the cover.
Charge the battery.
Charge the battery.
Replace. (*)
Charge the battery.
Replace. (*)
Check, repair. (*)
Charge the battery.
Check, repair. (*)
Replace. (*)
Replace monitor. (*)
Check, repair. (*)
Check, repair. (*)
Remedy
Release the parking brake.
Switch the directional lever or direc-
tional selector switch completely.
Add oil to specified level. For details,
see WHEN REQUIRED.
OPERATION