GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Replacement

Removal Procedure
  1. Place a drain pan under the vehicle.

    2. Object Number: 519661 Size: SH
  2. Remove the ignition wiring harness from the retaining clip on the power steering pump.
  3. Remove the accessory drive belt from the power steering pump pulley. Refer to Drive Belt Replacement in Engine Mechanical-3.0L.
  4. Remove the power steering pressure line from the power steering pump.Refer to Power Steering Pressure Pipe/Hose Replacement .
  5. Remove the power steering return hose from the power steering pump.Refer to Power Steering Return Hose Replacement .
  6. Remove the power steering pump mounting bolts from the power steering pump.
  7. Remove the power steering pump from the engine.
  8. Remove the power steering pump pulley from the power steering pump. Refer to Power Steering Pump Pulley Replacement .
  9. Remove the power steering pump reservoir from the power steering pump.Refer to Power Steering Fluid Reservoir Replacement - Off Vehicle .

Installation Procedure

    Object Number: 519661 Size: SH
  1. Install the power steering pump reservoir to the power steering pump.Refer to Power Steering Fluid Reservoir Replacement - Off Vehicle .
  2. Install the power steering pump pulley to the power steering pump. Refer to Power Steering Pump Pulley Replacement .
  3. Position the power steering pump to the engine.

    4. 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.

  4. Install the power steering pump mounting bolts.

    5. Tighten
    Tighten the power steering pump mounting bolts to 34 N·m (25 lb ft).

  5. Install the power steering pressure line to the power steering pump.Refer to Power Steering Pressure Pipe/Hose Replacement .
  6. Install the power steering return hose to the power steering pump.Refer to Power Steering Return Hose Replacement .
  7. Install the ignition wiring harness to the retaining clip on the power steering pump.
  8. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical-3.0L.
  9. Fill the power steering system. Refer to Refilling the Power Steering System .
  10. Bleed the power steering system. Refer to Power Steering System Bleeding .
  11. Inspect the power steering system for leaks. Refer to Power Steering Gear and Pump Leaks .
  12. Remove the drain pan from under the vehicle.