Komatsu WA320-5H, Руководство по эксплуатации и техническому обслуживанию, Страница: 171 / 321

TROUBLESHOOTING
OPERATION
3-112
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If the machine is moved suddenly, the tow rope or bar will be subjected to an excessive load, and it may break.
Start the machine gradually and travel at a constant speed.
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The towing machine should normally be of the same class as the machine being towed. Check that the towing
machine has ample braking power, weight, and rimpull to allow it to control both machines on slopes or on the
tow road.
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When towing a machine downhill, use a larger machine for towing to provide ample rimpull and braking power,
or connect another machine to the rear of the machine being towed. This way it is possible to prevent the
machine from losing control and turning over.
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Towing may be carried out under various differing conditions, so it is impossible to determine beforehand the
requirements for towing. Towing on flat horizontal roads will require the minimum rimpull, while towing on
slopes or on uneven road surfaces will require the maximum rimpull.
WHEN ENGINE CAN BE USED 3
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If the transmission and steering wheel can be operated, and the engine is running, it is possible to tow the
machine out of mud or to move it for a short distance to the edge of the road.
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The operator should sit on the machine being towed and operate the steering in the direction that the machine
is towed.
WHEN ENGINE CANNOT BE USED 3
When towing a machine with the engine stopped, use the following procedure.
1. The transfer oil does not lubricate the system, so remove the front and rear drive shafts. If necessary, block
the tires to prevent the machine from moving.
2. The steering cannot be operated, so remove the steering cylinder.
Even if the brakes are in good condition, the brakes can only be used a limited number of times. There is no
change in the operating force for the brake pedal, but the braking force is reduced each time the pedal is
depressed.
3. Connect the towing equipment securely. When carrying out towing operations, use two machines of at least
the same class as the machine being towed. Connect one machine each to the front and rear of the machine
being towed, then remove the blocks from the tires and tow the machine.