Komatsu GALEO HM350-2 Operation & Maintenance Manual page 179

TROUBLESHOOTING
WHEN PARKING BRAKE HAS BEEN ACTUATED IN EMERGENCY
If the pressure in the hydraulic circuit goes down abnormally because of oil leakage or some other cause, the parking
brake is automatically applied.
It is necessary to tow or move the machine, the parking brake must be released. Release the parking brake as
follows.
METHOD OF RELEASING PARKING BRAKE
Please ask your Komatsu distributor to release the parking brake.
If any abnormality occurs in the hydraulic circuit, there is danger that the wheel brakes may not be applied properly, so always
travel at low speed when towing the machine.
When carrying out the operation to release the parking brake, check that the surrounding area is safe, and always put blocks
under all four wheels before starting the operation. If the wheels are not blocked, there is danger that the machine may
suddenly move.
Always stop the engine before starting the operation to release the parking brake.
1. Stop the engine.
2. Put blocks under the wheels.
3. Turn parking brake adjustment screw (1) counterclockwise.
4. Check that there is a clearance between the parking brake pad
and disc brake.
5. When the parking brake is released, tow the machine
immediately to a safe position.
For details of the method of towing, see "METHOD OF
TOWING MACHINE (PAGE 3-127)".
3 - 130
WARNING
OPERATION