Komatsu D65PX-12 Service Manual

TROUBLESHOOTING OPERATION
3-118
CHASSIS
● ( ): Always contact your Komatsu distributor when dealing with these items.
● In cases of abnormalities or causes which are not listed below, please contact your Komatsu distributor for
repairs.
Problem Main causes Remedy
When brake pedal is depress,
machine does not stop
● Brake out of adjust, defective
brake oil pressure
( ● Adjust, check, repair)
Track comes off
● Track too loose ● Adjust track tension, see
WHEN REQUIRED
Abnormal wear of sprocket
● Track too loose or too tightened
Blade, rises slowly, dose not rise
● Lack of hydraulic oil
● Safety lock lever in LOCK posi-
tion
● Add oil to specified level, see
EVERY 250 HOURS SER-
VICE
● Set lever in free position
Dose not steer even when steering
or operated
● Brake lock lever in LOCK posi-
tion
● Defective hydraulic pressure at
steering clutch
● Set lever in free position
(
● Check, repair)
Noise is generated from idler
● Lack of oil in idler ● Add oil to specified level, see
WHEN REQUIRED
Blade control lever is not held at
FLOAT position
● Insufficient warming up ● Carry out warming-up operation
Transmission oil pressure dose not
rise
● Wear, scuffing of gear pump
● Lack of oil in power train case
● Element strainer of oil filter in
power train case clogged
(
● Check, repair)
● Add oil to specified level, see
CHECK BEFORE STARTING
● Clean
For details, see EVERY 1000
HOURS SERVICE
Lacks drawber pull (cannot travel
at full speed)
● Lack of drive power from engine ● See ENGINE RELATED
PARTS
Travel speed does not rise quickly
● Low temperature of power line oil
● Lack of drive power from engine
● Warm up machine
● See ENGINE RELATED
PARTS
Machine dose not move off when
steering, directional and gear shift
lever is placed in gear
● Lack of oil in power train case
● Transmission oil pressure dose
not rise
● Brake lock lever in LOCK posi-
tion
● Wear, scuffing of gear pump
● Add oil to specified level, see
CHECK BEFORE STARTING
● See "Transmission oil pres-
sure dose not rise" above
● Set lever in free position
(
● Check, repair)

Komatsu D65PX-12 Specifications

General

Brand	Komatsu
Model	D65PX-12
Category	Construction Equipment
Language	English