Komatsu H75051 Operation & Maintenance Manual page 299

OPERATION
1.
Loosen the plug (1) under the HST pump until it touches
the stopper (2).
By doing so, the HST pump circuit is bypassed and the
travel is enabled.
2.
Set the parking brake switch (3) to OFF position (B) to re-
lease the parking brake.
REMARK
If the parking brake is not released, see "METHOD FOR
RELEASING PARKING BRAKE", and release the parking
brake.
TOW THE MACHINE WHOSE ENGINE CANNOT BE STARTED
When towing the machine with the engine stopped, observe the following procedures.
1.
The transfer oil does not lubricate the system, so remove the front and rear drive shafts. If necessary, chock
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 performing towing operations, use 2 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 chocks from the tires and tow the machine.
TROUBLES AND ACTIONS
3-233