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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Sealing Washer Replacement >> Installation Procedure

Installation Procedure

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    IMPORTANT: Flat washer type seals do not require lubrication.
  1. Inspect the new seal washer for any signs of cracks, cuts, or damage.

    Do not use a damaged seal washer.

  2. Remove the cap or tape from the A/C refrigerant components.
  3. Fig 1: Identifying Good And Bad Sealing Washer Positions
    GM818438Courtesy of GENERAL MOTORS CORP.
  4. Using a lint-free clean, dry cloth, clean the sealing surfaces of the A/C refrigerant components.
  5. Carefully install the new seal washer onto the A/C refrigerant component.

    The washer must completely bottom against the surface of the fitting.

  6. IMPORTANT: After tightening the A/C components, there should be a slight sealing washer gap of approximately 1.2 mm (3/64 in) between the A/C line and the A/C component.
  7. Assemble the remaining A/C refrigerant components. Refer to the appropriate repair procedure.