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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation, And Air Conditioning >> Repair Instructions >> O-Ring Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Disassembling/Reassembling A/C Line Fittings
    GM297225Courtesy of GENERAL MOTORS CORP.
  1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure
    • For compression style fittings use a back up wrench on the fitting (2) and loosen the fitting nut (1).
    • For banjo style fittings remove the bolt retaining the banjo type fitting.
  2. Remove the O-ring seal from the A/C refrigerant component.
  3. Inspect the O-ring seal for signs of damage to help determine the root cause of the failure.
  4. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.
    5. IMPORTANT: Cap or tape the open A/C refrigerant components immediately to prevent system contamination.
  5. Cap or tape the A/C refrigerant components.
  6. Discard the O-ring seal.
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