JLG G12-55A AccuPlace Service Manual - Manual (Page 66)

Axles, Drive Shafts, Wheels and Tires
5.12 G10-55A & G12-55A AccuPlace
5.7.2 Manually Resetting the Park Brake
Note: Block the wheels of the machine BEFORE
attempting to reset the machine’s park brake. Once the
park brake is released, the machine’s park brake AND
service brakes are inoperable.
1. Loosen each release screw, only 1/4 turn at a time,
in sequence, until each screw has lost contact with
the guide pin.
2. Remove the screws along with the nuts and seals.
Replace the seals, lubricate the screws with a
silicone-based grease and re-install the screws
along with the nuts.
3. Adjust the nut of the screw heads in relation to the
arm by 30 mm (1.18 in).
4. Repeat steps 1 thru 3 for the other side of the
differential.
5. After repairs to the machine have been made, start
the machine and check the park brake and service
brakes for proper function.