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For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 LeSabre 🢒 Steering 🢒 Power Steering System 🢒 Steering Gear Cylinder Pipe Assembly and Seals Replacement - Off Vehicle

Steering Gear Cylinder Pipe Assembly and Seals Replacement - Off Vehicle Quiet Valve

Disassembly Procedure

    Object Number: 470305 Size: SH
  1. Loosen both cylinder line fittings on the cylinder end of the gear assembly.
  2. Loosen both fittings on the cylinder line assemblies (1) at the valve end of the gear assembly.
  3. Remove both cylinder line assemblies (1) from the rack and pinion gear assembly (2).

    4. Object Number: 470306 Size: SH
  4. Remove the O-ring seals (1) from the valve end of line.
  5. Discard the O-ring seals (1).

Assembly Procedure

    Object Number: 470305 Size: SH
  1. Inspect the cylinder lines (1) for the following items:
    2. • Cracks
    • Dents
    • Damage to the threads
  2. Replace the parts as needed.

    3. Object Number: 470306 Size: SH
  3. Install the new O-ring seals (1) to the valve end of the cylinder lines.

    4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 470305 Size: SH
  4. Install the cylinder line assemblies (1) to the gear assembly (2).

    5. Tighten

    • Tighten the valve end fittings to 17 N·m (13 lb ft).
    • Tighten the cylinder end fittings to 27 N·m (20 lb ft).

Steering Gear Cylinder Pipe Assembly and Seals Replacement - Off Vehicle Magnasteer

Disassembly Procedure

    Object Number: 423433 Size: SH
  1. Loosen both cylinder line fittings (1) on the cylinder end of the gear assembly.
  2. Loosen both fittings on the cylinder line assemblies (3) at the valve end of the gear assembly.

    3. Object Number: 423434 Size: SH
  3. Remove both cylinder line assemblies (1) from the rack and pinion gear assembly (2).

    4. Object Number: 423437 Size: SH
  4. Remove the O-ring seals (1) from the valve end of line.
  5. Discard the O-ring seals (1).

Assembly Procedure

    Object Number: 423434 Size: SH
  1. Inspect the cylinder lines (1) for the following items:
    2. • Cracks
    • Dents
    • Damage to the threads
  2. Replace the parts as needed.

    3. Object Number: 423437 Size: SH

    Important: Carefully align the threads on all of the fittings. Finger tighten the fittings in order to avoid stripping and cross-threading the fittings.

  3. Install the new O-ring seals (1) to the valve end of the cylinder lines.

    4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 423434 Size: SH

    Important: Flush and bleed power steering system hoses, reservoir and cooler lines with power steering fluid GM P/N 1050017, Canadian P/N 992646 (or equivalent meeting GM Specification number 9985010). Refer to Power Steering System Bleeding .

  4. Install the cylinder line assemblies (1) to the gear assembly (2).

    5. Tighten

    • Tighten the valve end fittings to 17 N·m (13 lb ft).
    • Tighten the cylinder end fittings to 27 N·m (20 lb ft).