Komatsu D39E-1 User Manual

16. TROUBLESHOOTING
16.3 OTHER TROUBLE
(
): Always contact your Komatsu distributor when handling these items.
+ In cases of abnormalities or causes which are not listed below, please contact your distributor for repairs.
16.3.1 ELECTRICAL SYSTEM
Problem
Main Cause
+ Defective wiring Voltmeter does not register charge
when engine runs at high idle
+ Defective adjustment of fan belt ten-
Voltmeter flickers while engine is run-
sion
ning
Voltmeter registers extreme high charge
+ Defective alternator
+ Defective wiring
Abnormal noise is generated from alter-
nator
+ Defective alternator
Starting motor does not turn when key
+ Defective wiring
switch is turned to START
+ lnsufticient battery charge
Pinion of starting motor keeps going in
+ Insufficient battery charge
and out
Starting motor turns engine sluggishly
+ Insufficient battery charge
+ Charge
+ Defective starting motor
+ (Replace)
Starting motor disengages before en-
+ Defective wiring
gine starts
+ Insufficient battery charge
+ (Check, repair)
+ Charge
16.3.2 CHASSIS
Problem
When transmission/steering lever is
moved to desired position, machine
does not start or traveling speed is slow
When transmission/steering lever is
moved to turn machine, machine does
not turn and goes straight
When brake pedal is depressed, ma-
chine does not stop
Track comes off
Abnormal wear of sprocket
Blade rises slowly, does not rise
Main Cause
) Oil pressure of drive train is not
raised
1. Insufficient oil in drive train sys-
tem
2. Clogged strainer in transmission
case
+ Steering clutch of moved side is not
disengaged
+ Brake of moved side is not actuated
+ Brakes out of adjustment
+ Track too loose
+ Track too loose or too tight
+ Lack of hydraulic oil
Remedy
+ (Check, repair loose terminals, dis-
connections)
+ Adjust fan belt tension. For details,
see 24.11 WHEN REQUIRED
+ (Replace)
+ (Check, repair)
+ (Replace)
+ (Check, repair)
+ Charge
+ Charge
Remedy
+ Add oil to specified level, see 24.4
EVERY 50 HOURS SERVICE
+ Clean strainer
+ Adjust brake.
+ Adjust brake.
+ Adjust track tension, see 24.11
WHEN REQUIRED
+ Add oil to specified level, see 24.3
EVERY IO HOURS SERVICE
2-66

Komatsu D39E-1 Specifications

General

Brand	Komatsu
Model	D39E-1
Category	Excavators
Language	English