GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Corvette 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Flow Control Valve Replacement - Off Vehicle

Disassembly Procedure

    Object Number: 318581 Size: SH
  1. Remove the O-ring union fitting (5) from the housing (1).
  2. Discard the O-ring seal (4) from the fitting (5).
  3. Remove the control valve assembly (3) from the housing (1).
  4. Remove the flow control spring (2) from the housing (1).

Assembly Procedure

    Object Number: 318581 Size: SH
  1. Install the flow control spring (2) to the housing (1).
  2. Install the control valve assembly (3) to the housing (1).
  3. Lubricate the O-ring seal (4) with power steering fluid.
  4. Install the new O-ring seal (4) onto the O-ring union fitting (5).
  5. Install the O-ring union fitting (5) into the pump housing (1).

    6. 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.

    Tighten
    Tighten the union fitting (5) to 75.0 N·m (55 lb ft).