Komatsu H70051 Series Operation & Maintenance Manual page 302

TROUBLES AND ACTIONS
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.
METHOD FOR RELEASING PARKING BRAKE
• When releasing the parking brake, stop the machine on a level ground and check that the surround-
ing area is safe. If it is necessary to release the brake on a slope in an emergency, chock the tires
before starting the work.
• When the parking brake is released, the brake is not applied. When moving the machine, be careful
with the safety.
1.
Remove the plugs (1) from the rear of transfer case.
2.
Remove the bolt (2).
3.
Insert the bolts (2) into the holes after the plugs (1) are re-
moved. Screw them in until they stop evenly.
The parking brake is released.
(A): Plug mounting hole (M14: O-ring boss)
(B): Releasing screw hole (M10)
3-236
k k
WARNING
OPERATION