Komatsu ecot3 GALEO HM300-2 Operation And Maintenance Manual page 187

TROUBLESHOOTING
CHASSIS
( ): Always contact your Komatsu distributor when dealing with these items.
In cases of problems or causes which are not listed below, contact your Komatsu distributor for repairs.
Problem
Torque converter oil temperature
caution lamp flashes
Steering wheel is heavy
Steering wheel pulls
Braking effect is poor when brake
pedal is depressed
Brake pulls to one side
Dump body speed is slow
Suspension is hard
Wheel on one side tends to slip
3 - 136
Main causes
Leakage of oil or entry of air due
to damage or defective tightening
of oil pipe, pipe joint
Wear, scuffing of gear pump
Insufficient oil in transmission
case
Loose fan belt
Clogged oil cooler
Long distance traveled in torque
converter range
Disconnected, broken wiring to
sensor
Lack of grease at link
Internal leakage inside steering
cylinder
Tire inflation pressure not uniform
on left and right
Dragging, pulling of front brake
Disc has reached wear limit
Rear disc has reached wear limit
Insufficient oil pressure
Insufficient brake oil
Air in brake circuit
Defective gear pump
Insufficient oil
Entry of soil or sand due to break-
age of dust seal, gas leakage
due to breakage of U-packing
Gas leaking from valve core
Air in brake circuit (between
slack adjuster and brake)
Excessive difference in wear
between left and right tires
Excessive difference in division
of load between left and right
wheels (unbalanced load)
Excessive deformation of disc
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Remedy
( Check, repair)
( Check, repair)
Add oil to specified level. See
CHECK BEFORE STARTING
Replace belt. See EVERY 250
HOURS SERVICE
( Clean or replace)
Drive in direct range
( Repair, connect wiring)
Add grease
( Replace cylinder seal)
Make tire inflation pressure
uniform. See CHECK BEFORE
STARTING
Check wear of brake disc
For details, see EVERY 1000
HOURS SERVICE
( Replace disc)
( Replace disc)
Charge to specified pressure
Add oil to the transmission case
See CHECK BEFORE
STARTING
Bleed air
See WHEN REQUIRED
( Replace gear pump)
Add oil to specified level. See
CHECK BEFORE STARTING
( Replace U-packing)
( Replace valve core)
Bleed air from brakes (left,
right). See WHEN REQUIRED.
( Replace tires)
Make load uniform
( Disassemble and adjust brake)
OPERATION