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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Accumulator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Exploded View Of Accumulator Mounting
    GM660416Courtesy of GENERAL MOTORS CORP.
  1. Add the proper amount of PAG oil to the accumulator. Refer to Refrigerant System Capacities .
  2. Install new O-ring seals. Refer to O-Ring Replacement .
  3. Install the retaining bracket (6) to the accumulator.
  4. NOTE: 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.
  5. Install the retaining bracket bolt (5).

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

  6. Install the accumulator (3).
  7. Install the accumulator bracket nut (4).

    Tighten:  Tighten the nut to 9 N.m (80 lb in).

  8. Install the nut (2) to the evaporator fitting.

    Tighten:  Tighten the nut to 16 N.m (12 lb ft).

  9. Install the compressor hose to the accumulator.
  10. Install the compressor hose nut to the accumulator.

    Tighten:  Tighten the nut to 16 N.m (12 lb ft).

  11. Connect the electrical connector to the A/C low pressure switch.
  12. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging .
  13. Leak test the fittings of the component using the J 39400-A  .