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21.5 BRAKES
FAULT
Brake has no effect
Warning light brake oil reserve: warn-
ing light brake oil reserve is on
FAULT
Brake is ineffective
FAULT
Steering reacts slowly
Steering wobbles
*) These measures must be performed by your local Komatsu dealer.
BRAKE
CAUSES
Multi-disks of brake worn
Air in brake system
Brake oil level in brake oil tank too low
PARKING BRAKE
CAUSES
Parking brake's brake lever is too
loose
Brake's multi-disks are worn
STEERING
CAUSES
Hydraulic system operates improperly
Clearance of steering cylinder bolt too
large
Faulty operation of hydraulic system
TROUBLESHOOTING
REMEDY
*) Replace multi-disks of brake
*) Bleed brake system
Top off brake oil Check brake system
for damage and leaks (visual check:
brake oil leaks)
REMEDY
*) Adjust parking brake
*) Replace multi-disks
REMEDY
*) Check function of hydraulic system
*) Check fastenings of steering cylin-
der; replace defective cylinder bolts
*) Check function of hydraulic system
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