3.7 Troubleshooting Operation
3-166 WA470-6H – VEAM946100
Releasing parking brake
WARNING
! When releasing the parking brake, stop the machine on level
ground and check that the surrounding area is safe. If it is
necessary to release the brake on a slope in an emergency,
block the tires before starting the operation.
! If the parking brake is released, the brake cannot be used,
so check the safety carefully when moving the machine.
If the engine will not run for some reason, use the following
methods to release the parking brake and tow the machine.
Method of releasing brake by using emergency parking
brake cancel switch
CAUTION
When the parking brake switch is at the OFF position and the
emergency parking brake release valve is opened, the parking
brake is released immediately.
In this condition, even if you feel danger and try to stop the
machine, the parking brake will not be applied immediately even
if you close the emergency parking brake release valve.
If the pressure in the brake accumulator is high, do as follows.
1. Turn the starting switch to the OFF position (A).
2. Loosen relief valve lock nut (1) by turning it counterclock-
wise, and turn grip (2) likewise to relieve the valve.
REMARK
The relief valve is located on the left front portion inside the rear
frame and secured to the accumulator mounting bracket.
GK038021
A
B
C
GK038095
1
2
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