The recirculating ball type power steering gear used on these vehicles is basically the same as the manual steering gear, except that it uses a hydraulic assist on the rack piston. The power steering gear control valve directs the power steering fluid to either side of the rack piston, which rides up and down the worm shaft. The steering rack converts the hydraulic pressure into mechanical force. Should the vehicle loose the hydraulic pressure, it can still be controlled mechanically.
REMOVAL & INSTALLATION
- Raise and support the front of the vehicle safely using jackstands.
- Position a fluid catch pan under the power steering gear.
- Disconnect the feed and return fluid hoses from the steering gear. Immediately cap or plug all openings to prevent system contamination or excessive fluid loss.
Be sure to plug the pressure hoses and the openings of the power steering pump to keep dirt out of the system.
- If equipped, remove the intermediate shaft lower coupling shield.
- Remove the intermediate shaft-to-steering gear bolt. Matchmark the intermediate shaft-to-power steering gear and separate the shaft from the gear.
- Matchmark and remove the pitman arm from the gear pitman shaft. For details, please refer to the procedure earlier in this section.
- Remove the power steering gear-to-frame bolts and washers, then carefully remove the steering gear from the vehicle.
- Position the steering gear to the vehicle and secure by finger-tightening the fasteners. For some vehicles, the pitman arm must be connected to the gear while it is still removed from the vehicle or while it is partially installed and lowered for access. If necessary, align and install the pitman arm to the shaft at this time.
- Tighten the power steering gear-to-frame bolts to 55 ft. lbs. (75 Nm).
- Align and install the intermediate shaft to the power steering, then secure using the pinch bolt.
- If equipped, install the shield over the intermediate shaft lower coupling.
- Remove the caps, then connect the feed and return hoses to the power steering gear. Refill the pump reservoir.
- Remove the jackstands and carefully lower the vehicle.
- Properly bleed the power steering system.
- Road test the vehicle.