GE_OEC_9600_C-Arms

32 Mechanical Assemblies
FORWARD MECHANICS
If the L-arm bearings are suspect the Horizontal Cross Arm and the L-arm Driver
Assembly should be replaced as an assembly. The L-arm motor, limit switches,
L-arm Motor Power PCB & capacitor may be replaced individually if they fail.
Refer to Figure 15.
CAUTION: Due to the weight of the forward mechanics it is recommended that
two people perform this procedure together.
WARNING... Electrical circuits inside the equipment use voltages that are capable
of causing serious injury or death from electrical shock. Use
appropriate precautions.
1. Turn the Workstation keyswitch to the OFF position and disconnect the AC
plug from the wall receptacle.
2. Disconnect the Interconnect cable from the Mobile C-Arm.
3. Place the steering pedal in the FREE position so that the Mobile C-Arm can
be moved sideways.
4. Remove the L-Arm handle by removing two hex bolts.
5. Remove the L-Arm end cap by removing the L-Arm Rotation Scale label and
Scale ring.
6. Using a large standard screwdriver rotate the worm gear until the forward
mechanics are parallel with the floor.
CAUTION: Make sure the forward mechanics are evenly balanced and will not fall
from the supporting surface when the L-arm Drive Assembly is
withdrawn from the L-arm casting. Be sure that the assembly is fully
supported without any binds or stress on any of the welded seams.
7. Rest the forward mechanics on a flat surface such as a gurney or table (pad
the surface if necessary to prevent scratching the paint).
8. Remove 3 large hex bolts securing the L-arm casting and forward
mechanics to the L-arm Drive Assembly
9. Push the Mobile C-Arm sideways and slide the casting off the drive
assembly, being careful not to damage the wiring to the L-arm motor.
10. With the L-arm Drive Assembly exposed individual components such as the
motor, limit switches and PCBs may be removed.
11. With the L-arm Drive Assembly exposed, individual components such as the
rotation motor, limit switches, and L-Arm Motor Power PCB can be removed.