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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1546 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Accumulator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the battery. Refer to Battery Replacement in Engine Electrical.
  3. Remove the battery heat shield. Refer to Battery Heat Shield Replacement in Engine Electrical.
    4. Fig 1: Heater Pipe Bracket & Cowl
    GM621749Courtesy of GENERAL MOTORS CORP.
  4. Remove the nut retaining the heater pipe bracket to the cowl.
  5. Reposition the heater pipe bracket to access the refrigerant lines.
    6. Fig 2: Accumulator, Retaining Bolt & Compressor Hose Assembly
    GM95632Courtesy of GENERAL MOTORS CORP.
  6. Remove the compressor hose to accumulator retaining bolt.
    7. IMPORTANT: Cap or tape the A/C components immediately to prevent system contamination.
  7. Disconnect the compressor hose from the accumulator.
  8. Remove and discard the O-ring.
  9. Cap or tape the open compressor hose and the accumulator.
  10. Reposition the compressor hose end.
    11. Fig 3: Accumulator Bracket Mounting Nuts
    GM297298Courtesy of GENERAL MOTORS CORP.
  11. Remove the accumulator bracket mounting nuts.
    12. IMPORTANT: Prior to removal, take note of the accumulator alignment to the accumulator hose and the rear evaporator tube.
  12. Reposition the accumulator slightly to access the accumulator hose to accumulator fitting.
  13. Cap or tape the open accumulator hose and the accumulator.
    14. Fig 4: Disassembling/Reassembling A/C Line Fittings
    GM297225Courtesy of GENERAL MOTORS CORP.
  14. Using a back-up wrench on the accumulator fitting (2), loosen the accumulator hose fitting (1) from the accumulator.
    15. Fig 5: Accumulator Hose & O-Ring
    GM297300Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the accumulator hose from the accumulator.
  16. Remove and discard the O-ring
    17. Fig 6: Accumulator Bracket, Clamp & Bolt
    GM296228Courtesy of GENERAL MOTORS CORP.
  17. Remove the accumulator from the vehicle.
  18. Loosen the accumulator bracket clamp bolt.
  19. Remove the accumulator from the accumulator bracket.
  20. Inspect the accumulator bracket insulator and the accumulator lower insulator for wear or damage.
    21. Fig 7: Accumulator Lower Insulator
    GM628098Courtesy of GENERAL MOTORS CORP.
  21. If replacing the accumulator, drain and measure as much of the oil as possible from the removed accumulator.

    This measurement will be used during installation of the replacement accumulator.

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