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12. OPERATION 12. OPERATION
12.10 PRECAUTIONS FOR OPERATION
12.10.1 PERMISSIBLE WATER DEPTH
When working in water or on swampy ground, do not let the
water come above the bottom of the axle housing.
After finishing the operation, wash and check the lubricating
points.
12.10.2 IF WHEEL BRAKE DOES NOT WORK
If the machine is not stopped by depressing the brake pedal, use
the parking brake to stop the machine.
NOTICE
If the parking brake has been used as an emergency brake,
contact your Komatsu distributor to have the parking brake checked
for any abnormality.
12.10.3 PRECAUTIONS WHEN DRIVING UP OR DOWN
SLOPES
LOWER THE CENTER OF GRAVITY WHEN TURNING.
When turning on slopes, lower the work equipment to lower the
center of gravity before turning. It is dangerous to turn the machine
with the work equipment raised.
BRAKING ON DOWNHILL SLOPES
If the foot brake is used too frequently when traveling downhill,
the brake may overheat and be damaged. To avoid this problem,
operate the accelerator pedal and make full use of the braking force
of the engine.
IF ENGINE STOPS
If the engine stops on a slope, depress the brake pedal immedi-
ately, lower the work equipment to the ground, then depress the
parking brake pedal fully to hold the machine.
Return the directional lever to the N position and start the engine
again.
When the engine stops with the parking brake released, the
alarm buzzer will sound; when the parking brake is applied, the
buzzer will stop.
If the machine must be stopped on a slope, depress the parking
brake pedal fully and put blocks under the tires.
Lower the bucket to the ground and dig the teeth in for increased
safety.
Even when the parking brake is not applied, the machine will
appear to be stopped. However, the oil may leak out gradually and
allow the machine to start moving, so always be sure to apply the
parking brake securely.
AE064240
Axle housing
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