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12. OPERATION
12.11 PRECAUTIONS FOR OPERATION
12.11.1
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.
12.11.2
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.
12.11.3
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 service brake is used too frequently when traveling down-
hill, the brake may overheat and be damaged. To avoid this problem,
shift down to a low range and make full use of the braking force of
the engine.
When braking, use the right brake pedal.
If the speed control lever is not placed in a proper speed position,
the torque converter oil may overheat. If it overheats, place the
speed control lever in the next lower gear speed to lower the oil
temperature.
If the temperature gauge does not indicate the green range of the
scale even with the lever in the 1st speed position, stop the machine,
place the lever in neutral, and run the engine at medium speed until
the gauge indicates the green range.
IF ENGINE STOPS
If the engine stops on a slope, depress the right brake pedal fully.
Next, lower the work equipment to the ground and apply the parking
brake. Then put the directional and speed control levers in neutral,
and start the engine again. (If the directional lever is not in neutral,
the engine will not start.)
2-86
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