JLG 20VP (3120728) Service Manual - Manual (Page 26)

SECTION 2 - SERVICE PROCEDURES
2-8 – JLG Lift – 3120728
Brake Assembly Removal
1. Lift the machine to gain access to the underside
(See Section 2-4., "Positioning Lift For Access To
Components Located Under The Base Frame").
2. Disconnect the brake magnetic coil wiring connector
and the brake limit (micro) switch wiring connector
from their wiring harness connectors.
3. Disconnect the manual brake release cable from the
manual brake release arm attached to the brake
assembly.
4. Lower machine back down to ground level.
PLACE MACHINE ON A LEVEL SURFACE BEFORE BEFORE
REMOVING THE BRAKE ASSEMBLIES. MACHINE MAY ROLL
AWAY IF NOT SETTING ON A LEVEL SURFACE.
5. Using the Ground Control Switch, raise the platform
to gain access to the brake assemblies mounted on
the end of the drive motors located at the base of the
mast.
NEVER WORK UNDER AN ELEVATED PLATFORM UNTIL PLAT-
FORM HAS BEEN SAFELY RESTRAINED FROM ANY MOVEMENT
BY BLOCKING OR OVERHEAD SLING.
6. Remove the four (4) hex cap screws securing the
brake assembly to the end of the drive motor and
remove the brake assembly from the end of the
drive motor.
Brake Assembly Installation
1. Guide the manual release lever, brake coil and brake
limit switch wiring connectors through the opening
in the drive motor cover and base frame while slid-
ing the brake assembly onto the front of the drive
motor. Engage the teeth of the disk brake with the
teeth on the drive motor brake gear.
2. If necessary, manually release the brake disk using
the manual release lever to allow the brake assem-
bly to turn and align the four holes in the brake
mounting plate with the mating holes in the drive
motor end plate.
3. Secure the brake assembly to the drive motor using
four (4) hex cap screws with washers. Torque evenly
to 44 in. lbs.
4. Lift the machine to gain access to the underside
(See Section 2-4., "Positioning Lift For Access To
Components Located Under The Base Frame").
5. Reconnect the brake coil and brake limit switch wir-
ing connectors to their respective wiring harness
connectors.
6. Reconnect the manual release brake cable to the
manual release lever (Y shaped lever) and adjust
cable so brakes are released when manual release
lever is in the down position. (See Figure 2-6.)
Figure 2-6. Manual Release Brake Cable Adjustment.
MANUAL
RELEASE
BRAKE
CABLE
BRAKES
ARE RELEASED
WHEN CABLE
PULLS LEVER
IN THIS DIRECTION
TO MANUAL
RELEASE
BRAKE
HANDLE
MOUNTED
ON SIDE OF
MAST
SET MANUAL
BRAKE RELEASE
HANDLE TO
FREE WHEELING
AND ADJUST HERE
UNTIL BRAKE DISK
IS COMPLETELY
RELEASED