Komatsu — 16.4.2 CHASSIS

OPERATION CHASSIS continued (16.4.2) WA450-3MC 2-95 Problem Main causes Remedy BRAKE Brake is not applied when pedal is depressed Worn disc Defective hydraulic system Lack of oil Air in brake line (Replace disc) Add oil to specified level See ? EVERY 100 HOURS SERVICE on page ?-38. Bleed air Brake drags or remains applied Vent hole of brake valve clogged Clean Brakes squeal Worn disc Large amount of water in axle oil Axle oil deteriorated due to brake overuse (Replace disc) Change axle oil Change axle oil PARKING BRAKE Braking effect is poor Worn disc (Replace disc) Brake drags or remains applied Lack of transmission oil Screen is clogged Add oil to specified level.

See 24.2.2 CHECK TRANSMISSION OIL LEVEL, ADD OIL on page 3-29. (Disassemble and clean) STEERING Steering wheel is heavy Defective hydraulic system Lack of oil Add oil to specified level. See ? EVERY 100 HOURS SERVICE on page ?-38. Steering wheel is loose Play in steering cylinder pin Defective hydraulic system Lack of oil Grease bearing or replace pin and bushing where there is play Add oil to specified level. See ? EVERY 100 HOURS SERVICE on page ?-38.