Chassis - Komatsu WA500-6H Operation & Maintenance Manual

Operation

Chassis

( ): Always contact your KOMATSU distributor when deal-
ing with these items.
In cases of abnormalities or causes which are not listed
below, please contact your KOMATSU distributor for repairs.
Problem
Transmission
Engine is running but machine
does not move
Even when engine is run at full
throttle, machine only moves
slowly and lacks power
Oil overheats
Noise generated
Axle
Noise generated
Brake
Brake is not applied when pedal is
depressed
Brake drags or remains applied
Brakes squeal
Steering
Steering wheel is heavy
WA500-6H – VEAM430100
Main causes
Parking brake is applied
Directional selector switch not
completely switched to travel
direction position
Lack of oil in transmission case
Lack of oil in transmission case
Screen is colgged
Too much oil or too little oil
Machine is not traveling in correct
speed range
Torque converter is stalled for
long periods
Engine is overheating
Lack of oil
Lack of oil
Improper oil used (for machines
with limited-slip differential)
Disc has reached wear limit
Defective hydraulic system
Lack of oil
Air in brake line
Vent hole of brake valve is
clogged
Disc is worn
Large amount of water in axle oil
Deteriorated axle oil due to over-
use of brake
Defective hydraulik system
Lack of oil
3.7 Troubleshooting
Remedy
Release parking brake
Operate switch fully
Add oil to specified level.
See WHEN REQUIRED
Add oil to specified level.
See WHEN REQUIRED
Disassemble, clean
Add or drain oil to specified level.
See WHEN REQUIRED
Place in correct speed range
Reduce stall time
(Check engine)
Add or drain oil to specified level.
See WHEN REQUIRED
Add or drain oil to specified level.
See WHEN REQUIRED
Change to specified oil
(Replace disc)
(Check, repair)
Add oil to specified level.
See EVERY 100 HOURS SER-
VICE
Bleed air.
See WHEN REQUIRED
Clean
(Replace disc)
Change axle oil
Change axle oil
(Check, repair)
Add oil to specified level.
See EVERY 100 HOURS SER-
VICE
3-185