9600 Service Manual - gmecorp-usa.com

Mechanical Assemblies 5
MECHANICAL STOPS
The cross arm has mechanical stops mounted in the Cross Arm to limit motion.
The mechanical stops consist of metal screws mounted in the Cross Arm itself
and polyurethane plugs mounted in the Cross Arm Housing. The polyurethane
plugs absorb the shock when the Cross Arm is fully extended or fully retracted.
Perform the following to replace a polyurethane plug in the Cross Arm Housing:
1. Remove the Control Panel Housing.
2. Remove the plug using a pair of vise grips. Twist the plug out of its mounting
(they are glued).
3. Replace the plug leaving approximately 1/2 inch exposed. Use Loctite Black
Max ZZLAH, OEC P/N - 88-299614-00.
CROSS ARM SHAFT & L-ARM DRIVER ASSEMBLY
Refer to Figures 4 and 5.
CAUTION: Do not separate the Horizontal Cross Arm and the L-arm Driver
Assembly in the field due to the precision mechanical adjustments
required during reassembly.
WARNING... Electrical circuits inside the equipment use voltages that are capable
of causing serious injury or death from electrical shock. Use
appropriate precautions.
NOTE: The L-arm motor, limit switches, L-arm Motor Power PCB & capacitor
may be replaced individually.
1. Remove the L-Arm and forward mechanics as described in the L-Arm
Rotation Assembly heading of this section of the manual.
2. Disassemble the Control Panel Assembly by performing the following:
A. Remove the hole plug and Torx screw securing the Cross Arm Brake
Handle.
B. Remove the Cross Arm Brake Handle.
C. Remove 2 Torx screws from the bottom of the Cross Arm Lower Cover.
D. Carefully lift the Cross Arm Center Cover and set aside.
E. Remove the Control Panel Side Covers.