You are replacing the defective lateral drive screw assemblies. After you remove
the four hex nuts and capscrews that secure the support block, you:
b. Lift the drive assembly from the seat section and trunnion.
Loosen the two clamp screws and, while supporting the drive assembly, pry
out the two adjusting pins
d. Remove the leg sections, back section, and lateral screw assemblies.
You are replacing the back lift assembly. After you raise the back section to the
straight up position, you:
a. Drive out the dowel pin securing the gear racks to the back link assemblies.
b. Withdraw the release pin securing the leg yoke to the seat section
Remove the release pin securing the end of the leg index rod.
d. Support the back section while withdrawing the release pin.
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