REMOVAL & INSTALLATION
- Matchmark and disconnect the steering shaft from the gearbox main shaft.
- Matchmark and disconnect the tie rod end and pitman arm from the relay rod.
- Remove the air cleaner and disconnect the pressure and return lines from the steering gear assembly.
- Remove any interfering splash pans from underneath the vehicle.
- If necessary, remove the kickdown linkage splash pan shield and bolts. Move the fuel line aside to avoid damage during removal.
- Remove the frame bolts from the gearbox and lower the unit from the vehicle.
- Install the box to the frame and connect the linkage and fluid lines. Make sure that all matchmarks align. After tightening the pitman arm nut make sure that the distance between the centerline of the lowest steering gear mounting bolt and the top of the pitman arm is 19.5mm. Observe the following torques: pitman arm nut: 94-109 ft. lbs. steering gear mounting bolts: 40-47 ft. lbs. tie rod socket and relay rod: 25-33 ft. lbs. high pressure hose: 22-29 ft. lbs. return hose: 29-36 ft. lbs.
The steering gear must be disconnected from the steering shaft.
- Measure the mainshaft preload with an inch pound torque wrench. The preload should be 3.5-6.9 inch lbs., with the crosshaft adjusting bolt backed off.
- Adjust the valve housing top cover to obtain the proper preload. When correct, lock the top cover with the locking nut.
- Tighten the cross-shaft adjusting bolt until zero lash is present. Check the total starting torque to rotate the main shaft. The torque should be 5.2-8.7 inch lbs.
- Adjust the cross-shaft until the required starting torque is obtained and lock the adjusting bolt nut securely.
BLEEDING THE SYSTEM
- The reservoir should be full of Dexron®II fluid.
- Jack up the front wheels and support the vehicle safely.
- Turn the steering wheel fully to the right and left until no air bubbles appear in the fluid. Maintain the reservoir level.
- Lower the vehicle and with the engine idling, turn the wheels fully to the right and left. Stop the engine.
- Install a tube from the bleeder screw on the steering gear box to the reservoir.
- Start the engine, turn the steering wheel fully to the left and loosen the bleeder screw.
- Repeat the procedure until no air bubbles pass through the tube.
- Tighten the bleeder screw and remove the tube. Refill the reservoir as needed, and check that no further bubbles are present in the fluid.
An abrupt rise in the fluid level after stopping the engine is a sign of incomplete bleeding. This will cause noise from the pump or control valve.