Power Steering Pump Replacement 4.3L

Tools Required

1. Remove the upper radiator fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
2. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical -- 4.3L or Drive Belt Replacement in Engine Mechanical -- 4.8L, 5.3L, 6.0L.
3. Remove the pulley.

•	Install the J 25034-C .

•	Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.

•	Hold the pilot bolt.

•	Turn the nut counterclockwise.




4. Place a drain pan under the pump.
5. Remove the hoses from the pump.
6. Remove the bolts from the rear of the pump.
7. Remove the bolts from the front of the pump.
8. Remove the pump from the vehicle.

1. Install the pump.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the bolts to the front and to the rear of the pump.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

3. Install the hoses to the pump.

Tighten
Tighten the nut to 28 N·m (20 lb ft).




4. Install the pulley.

•	Place the pulley on the end of the pump shaft.

•	Install the J 25033-C .

•	Be sure the pilot bottoms in the pump shaft by turning the nut to the top of the pilot bolt.

•	Hold the pilot bolt.

•	Turn the nut clockwise.

•	Install the pulley with 0.5 mm (0.020 in) play.

5. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical -- 4.3L or Drive Belt Replacement in Engine Mechanical -- 4.8L, 5.3L, 6.0L.
6. Install the upper radiator shroud. Refer to Fan Shroud Replacement in Engine Cooling.
7. Fill and bleed the power steering system. Refer to Power Steering System Bleeding .

Power Steering Pump Replacement 4.8L, 5.3L, 6.0L

Tools Required

1. Remove the upper radiator fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
2. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical -- 4.3L or Drive Belt Replacement in Engine Mechanical -- 4.8L, 5.3L, 6.0L.
3. Remove the pulley.

•	Install the J 25034-C .

•	Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.

•	Hold the pilot bolt.

•	Turn the nut counterclockwise.




4. Place a drain pan under the pump.
5. Remove the hoses from the pump.
6. Remove the bolts from the rear of the pump.
7. Remove the bolts from the front of the pump.
8. Remove the pump from the vehicle.

1. Install the pump.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the bolts to the front and the rear of the pump.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

3. Install the hoses to the pump.

Tighten
Tighten the nut to 28 N·m (20 lb ft).




4. Install the pulley.

•	Place the pulley on the end of the pump shaft.

•	Install the J 25033-C .

•	Be sure the pilot bottoms in the pump shaft by turning the nut to the top of the pilot bolt.

•	Hold the pilot bolt.

•	Turn the nut clockwise.

•	Install the pulley with 0.5 mm (0.020 in) play.

5. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical -- 4.3L or Drive Belt Replacement in Engine Mechanical -- 4.8L, 5.3L, 6.0L.
6. Install the upper radiator shroud. Refer to Fan Shroud Replacement in Engine Cooling.
7. Fill the system.
8. Bleed the power steering system. Refer to Power Steering System Bleeding .