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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Power Steering System) >> Repair Instructions >> Steering Gear Cylinder Pipe Assemblies/O-Ring Seals Replacement - Off Vehicle >> Installation Procedure

Installation Procedure

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  1. Inspect the cylinder lines for the following items:
    • Cracks
    • Dents
    • Damage to the threads
  2. Replace the parts as needed.
  3. Lubricate and install the O-rings seals onto the cylinder lines.
  4. Fig 1: View Of Cylinder Line Nut, Cylinder Line, Valve Housing & Gear Tube End
    GM1751433Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: You must install the smaller cylinder line into the valve housing (3) first.
  5. Place the smaller cylinder line (2) into the valve housing (3).
  6. IMPORTANT: Hold the smaller cylinder line (2) in place. Do not torque the cylinder line nut (1).
  7. Place the other end of the cylinder line at the gear tube end (4).

    Finger tighten the cylinder line nut (1) on the smaller cylinder line.

  8. Fig 2: View Of Cylinder Line Nut, Cylinder Line, Valve Housing, & Gear Tube End
    GM1751436Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: You must install the larger cylinder line into the valve housing (3) first.
  9. Place the larger cylinder line (2) into the valve housing (3).
  10. IMPORTANT: Hold the larger cylinder line (2) in place. Do not torque the cylinder line nut (1).
  11. Place the other end of the cylinder line at the gear tube end (4).

    Finger tighten the cylinder line nut (1) on the larger cylinder line.

  12. Fig 3: View Of Cylinder Line Retaining Plate & Bolt
    GM1751420Courtesy of GENERAL MOTORS CORP.
  13. Place the cylinder line retaining plate (2) over the cylinder line beads at the valve end.
  14. NOTE: Refer to Fastener Notice .
  15. Install the bolt (1) into the cylinder line retaining plate (2) and tighten.

    Tighten:  Tighten the bolt to 12 N.m (106 lb in).

  16. Tighten both cylinder line nuts (3) at the cylinder end.

    Tighten:  Tighten the nuts to 19 N.m (14 lb ft).