The power steering gearbox is a rack and pinion type integral system. The power cylinder is built in the gearbox, using the rack shaft as a piston. The control valve is arranged around the pinion shaft.
REMOVAL & INSTALLATION
- Disconnect the negative (-) battery cable.
- Remove the spare tire.
- If necessary, disconnect the thermo sensor connector.
- Raise and support the front of the vehicle with jackstands.
- Remove the front wheels.
- Disengage the electrical connector from the O 2 sensor, then remove the front exhaust pipe assembly.
- Remove the tie rod end cotter pin and loosen the castle nut.
- Using a Ball Joint Puller tool, separate the tie rod ends from the steering knuckle arm.
- Remove the jack-up plate and the clamp.
- From the power steering gear, remove the center pressure pipe, connect a vinyl hose to the pipe and joint, then turn the steering wheel to discharge the fluid into a container.
- Make alignment marks on the steering shaft universal joint assembly-to-power steering unit and the steering shaft-to-universal joint assembly.
- Remove the lower/upper universal joint-to-shaft bolts. Lift the universal joint assembly upward and secure it out of the way.
- From the control valve of the gearbox assembly, remove the power steering pressure pipes.
- Remove the power steering pressure pipes from the control valve of the gearbox assembly.
- Remove the power steering gearbox-to-crossmember assembly bolts and the gearbox assembly from the vehicle.
- Installation is the reverse of removal.
- Torque the power steering gearbox-to-crossmember bolts to 33-40 ft. lbs. (44-54 Nm) and the power steering pressure pipes to 7-12 ft. lbs. (9-16 Nm).
- Torque the universal joint assembly-to-power steering gearbox bolts to 16-19 ft. lbs. (21-25 Nm) and the universal joint assembly-to-steering shaft bolts to 16-19 ft. lbs. (21-25 Nm).
- Torque the tie rod end-to-steering knuckle nut to 18-22 ft. lbs. (24-29 Nm), (after torquing, turn it 60° further) and the wheel lug nuts to 58-72 ft. lbs. (78-97 Nm).
- Refill and bleed the power steering system. Check and/or adjust the toe-in and the steering angle.
Tighten the backlash adjuster until it bottoms, back off the screw 30° and torque the locknut to 22-36 ft. lbs. (29-48 Nm). There should be 0.004 in. (0.124mm) clearance between the screw tip and the sleeve plate.