Power Steering Gear: Disassembly
- Attach steering gear to a suitable assembly plate (1 16 589 01 59 00). Remove lock nut from adjusting screw and remove copper seal ring. Remove bolts attaching pitman shaft cover to steering case.
- With steering in center position, turn adjusting screw counterclockwise. This forces pitman shaft, with housing, from steering gear case. Remove pitman shaft with cover. Remove "O" rings from cover. Remove lock ring and seal ring. Remove lock ring from pitman shaft and remove adjusting screw with thrust washers (see illustration).
- Remove bolts securing bearing cap to steering gear case. Turn worm gear counterclockwise until bearing cap is forced out of steering gear case.NOTE: Balls will fall out of ball guide if worm gear is turned too far.
Remove bearing cap, worm gear with piston/steering nut from steering gear case. Unscrew worm gear with bearing cap from piston/steering nut. Do not lose balls.
- Remove "O" ring from bearing cap and attach bearing cap to a suitable assembly fixture (116 589 03 59 00). Unscrew slotted nut, with hook wrench, from bearing insert and remove bearing insert from bearing cap, with spanner wrench (see illustrations). Remove seal and "O" rings from worm gear. Remove bearing and disc from bearing cap. Remove bolts, clamp and both ball guide halves from piston/steering nut.
- Using suitable clamp and tools (see illustration) remove worm gear nut from piston/steering nut. Remove seal ring and "O" ring from worm gear nut. On early models, remove axial disc from worm gear nut. Remove bearings from piston/steering nut (see illustration).
- Remove lock ring, cover and control valve from steering gear case (see illustration).