Komatsu WA470-6 2006 User Manual

3.7 Troubleshooting Operation
3-174 WA470-6H – VEAM946100
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 Main causes Remedy
Transmission
Engine is running but machine
does not move
! Parking brake is applied
! Directional lever is not shifted
properly
! Lack of oil in hydraulic tank
! Release parking brake
! Shift lever properly
! Add oil to specified level.
See WHEN REQUIRED
Even when engine is run at full
throttle, machine only moves
slowly and lacks power
! Lack of oil in hydraulic tank
! Screen is colgged
! Add oil to specified level.
See WHEN REQUIRED
! Disassemble, clean
Oil overheats
! 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
! Add or drain oil to specified level.
See WHEN REQUIRED
! Place in correct speed range
! Reduce stall time
! (Check engine)
Noise generated
! Lack of oil in transmission case
! Add oil to specified level.
See WHEN REQUIRED
Axle
Noise generated
! Lack of oil
! Improper oil used (for machines
with limited-slip differential)
! Add oil to specified level.
See WHEN REQUIRED
! Change to specified oil
Brake
Brake is not applied when pedal is
depressed
! Disc has reached wear limit
! Defective hydraulic system
! Lack of oil
! Air in brake line
! (Replace disc)
! Add oil to specified level.
See EVERY 100 HOURS SER-
VICE
! Bleed air.
Brake drags or not applied
! Vent hole of brake valve is
clogged
! Clean
Brakes squeal
! Disc is worn
! Large amount of water in axle oil
! Deteriorated axle oil due to over-
use of brake
! (Replace disc)
! Change axle oil
! Change axle oil

Komatsu WA470-6 2006 Specifications

General

Brand	Komatsu
Model	WA470-6 2006
Category	Front End Loaders
Language	English