Komatsu WA800-1 Operation & Maintenance Manual page 122

TROUBLE SHOOTING GUIDE
CHASSIS
Transmission
Engine is running but machine will not move.
l Release parking brake.
l
Put directional lever in position properly.
l
Add oil to transmission case to the specified level.
Even at full throttle, machine moves slowly and lacks power.
l Add oil to transmission case to the specified level.
l
Disassemble transmission strainer and clean.
Oil overheats
l Add oil to transmission case to the specified level or drain oil.
l Use a suitable gear speed.
l Reduce time using torque converter at stall speed.
. Check engine.
Abnormal noise is produced.
l Add oil to transmission case to the specified level.
Axle
Abnormal noise is produced.
l Add oil to axle case to the specified level.
Disc brake
Brake does not work when pedal is depressed.
. Raise air pressure to specified level.
l Replace disc.
l Add brake oil.
. Bleed air from brake system.
Brake drags or stays applied
. Clean exhaust hole of treadle valve.
l Clean breather of power cluster.
l Check and repair slack adjuster.
Brake slips.
l Replace disc.
Parking brake
Brake does not work properly.
l Adjust linkage.
l Clean brake pad.
l Replace spring in air cylinder
l Adjust or replace brake pad.
Steering
Steering wheel is heavy.
l Adjust steering gear.
l Check linkage, replace parts.
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