K 1500 Truck 4WD V8-4.8L VIN V (1999)
3. Install the stub shaft (7) and valve assembly (6) to the worm shaft (5). Ensure the pin fits in the worm shaft to the slot in the valve assembly.
4. Install the thrust support assembly. Refer to Steering Gear Thrust Support Replacement - Off Vehicle.
5. Refer to Worm Thrust Bearing Preload Adjustment - Off Vehicle to adjust the thrust bearing preload.
6. Refer to Pitman Shaft Over-Center Preload Adjustment - Off Vehicle to adjust the pitman shaft over-center sector.
Rack Piston and Worm Shaft Replacement-Off Vehicle (670 Gear)
DISASSEMBLY PROCEDURE
-
Tools Required
-
J 21552 Rack Piston Arbor
1. Remove the pitman shaft and side cover assembly. Refer to Steering Gear Pitman Shaft and Housing Cover Replacement - Off Vehicle (670 Gear).
2. Remove the pitman seals and bearing. Refer to Pitman Shaft Seals and Bearing Replacement - Off Vehicle (670 Gear).
3. Remove the stub shaft housing assembly. Refer to Stub Shaft Housing Replacement.
4. Turn the stub shaft counterclockwise until the rack piston (1) begins to come out of the steering gear housing.
5. Insert J 21552 into the bore of the rack piston (2).
6. Hold J 21552 tightly against the worm shaft while turning the stub shaft counterclockwise.
Turning the stub shaft forces the rack piston (1) onto J21552. The rack piston balls remain in place.
