GM Service Manual Online
For 1990-2009 cars only

Compressor Clutch Assembly Replacement 2.0L (LSJ)

Tools Required

    • J 37872 Universal Spanner Wrench
    • SA9149AC-8 Snap Ring Pliers

Removal Procedure

  1. Remove the compressor. Refer to Air Conditioning Compressor Replacement .

  2. Object Number: 872553  Size: SH

    Important: Remove the 3 adjustable dowels from the Universal Spanner Wrench.

    Install three 5/16 x 1 inch bolts in place of the dowels.

  3. Remove and discard the compressor clutch plate bolt. Use the J 37872 to hold the compressor clutch plate from turning.

  4. Object Number: 872556  Size: SH
  5. Remove the compressor clutch plate.

  6. Object Number: 872558  Size: SH
  7. Remove the compressor pulley snap ring using SA9149AC-8 .

  8. Object Number: 872560  Size: SH
  9. Slide the compressor pulley off of the compressor.

  10. Object Number: 872563  Size: SH
  11. Remove the compressor clutch coil snap ring using SA9149AC-8 .

  12. Object Number: 872561  Size: SH
  13. Slide the compressor clutch coil off of the compressor.

Installation Procedure

  1. Carefully clean the clutch plate bolt threads with a M6x1.0 tap. Carefully blow out debris with compressed air.

  2. Object Number: 872561  Size: SH
  3. Slide the compressor clutch coil onto the compressor.

  4. Object Number: 872563  Size: SH
  5. Install the compressor clutch coil snap ring using SA9149AC-8 .

  6. Object Number: 872560  Size: SH
  7. Slide the compressor pulley onto the compressor.

  8. Object Number: 872558  Size: SH
  9. Install the compressor pulley snap ring using SA9149AC-8 .
  10. Place a small amount of oil on the 0.4 mm (0.016 in) air gap shim and place inside the clutch drive plate.

  11. Object Number: 872556  Size: SH
  12. Install the compressor clutch plate.

  13. Object Number: 187363  Size: SH

    Important: Make certain that the drive plate does not drag against the pulley when the pulley is rotated.

  14. Measure the air gap between the pulley and the drive plate. Adjust the shims to achieve a 0.3-0.6 mm (0.012-0.024 in) air gap.
  15. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 872553  Size: SH
  16. Make certain that the new drive plate bolt has colored adhesive on at least 5 threads. Install the clutch drive plate bolt. Use the J 37872 to hold the compressor clutch plate from turning.
  17. Tighten
    Tighten the compressor clutch drive plate bolt to 12 N·m (106 lb in).

  18. Install the compressor. Refer to Air Conditioning Compressor Replacement .
  19. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  20. Leak test the fittings using the J 39400-A .

Compressor Clutch Assembly Replacement LE5, L61

Tools Required

  1. J 6083
  2. J 37872
  3. J 41816

Removal Procedure

    Important: 

    Cap or tape the A/C compressor ports to ensure:

       • Contamination or debris does not enter the A/C compressor.
       • PAG oil is not lost once the A/C compressor is fixed into position.

  1. Remove the A/C compressor from the vehicle. Refer to Air Conditioning Compressor Replacement
  2. Mount the A/C compressor in a compressor stand or other suitable support fixture.

  3. Object Number: 2000939  Size: SH
  4. Remove the A/C compressor clutch assembly wiring harness retaining screws (1).

  5. Object Number: 2000942  Size: SH
  6. Using J 37872 , hold the A/C compressor clutch assembly from rotating and remove the retaining nut from the A/C compressor shaft.

  7. Object Number: 2000947  Size: SH

    Important: Do not drop, lose or misplace the clutch shim from the A/C compressor shaft when removing the clutch.

  8. Remove the clutch plate from the A/C compressor.

  9. Object Number: 2000953  Size: SH
  10. Using J 6083 , remove the clutch pulley snap ring retainer.

  11. Object Number: 2000955  Size: SH

    Important: Do not press on the A/C compressor shaft or compressor damage could occur.

  12. Use an appropriate sized impact socket sized to sit on the compressor hub to protect the compressor shaft during pulley removal.
  13. Using J 41816 or equivalent, remove the clutch pulley from the A/C compressor.

  14. Object Number: 2000960  Size: SH
  15. Using J 6083 , remove the clutch coil snap ring retainer.

  16. Object Number: 2000964  Size: SH
  17. Remove the clutch coil.

  18. Object Number: 2000966  Size: SH

    Important: Do not make contact with the A/C compressor shaft threads or damage the lip seal during shaft seal (felt wick) removal.

  19. Using a small flat bladed object, gently pry up on the shaft seal (felt wick) retainer and remove.

Installation Procedure


    Object Number: 2000970  Size: SH
  1. Using an appropriate sized socket to seat on the shaft seal (felt wick) outer retainer, install the shaft seal (felt wick) into the A/C compressor. The retainer should be flush with the housing.
  2. Ensure that the all mounting surfaces and/or threads on the A/C compressor and clutch assembly are completely free of debris and contamination prior to reassembly.

  3. Object Number: 2000964  Size: SH

    Important: Align the dimple on the clutch coil with the notch in the A/C compressor casting to ensure proper orientation. Failure to align the clutch coil assembly will cause the snap ring retainer not to seat properly.

  4. Install the clutch coil.

  5. Object Number: 2000960  Size: SH

    Important: Ensure that the clutch coil snap ring is fully seated within the bore.

  6. Using J 6083 , install the clutch coil snap ring retainer.

  7. Object Number: 2000975  Size: SH

    Important: Do not press on the seal, pulley or outer bearing race.

  8. Using an appropriate sized impact socket to seat on the inner bearing race, install the clutch pulley onto the A/C compressor using a hydraulic press.

  9. Object Number: 2000953  Size: SH

    Important: Ensure that the clutch pulley snap ring is fully seated within the bore.

  10. Using J 6083 , install the clutch pulley snap ring retainer.

  11. Object Number: 2000939  Size: SH
  12. Install the A/C compressor clutch assembly wiring harness retaining screws (1).
  13. Tighten
    Tighten the screws to 2.3 N·m (22 lb in).

  14. Install the previously used clutch shim if removed from the A/C compressor shaft.

  15. Object Number: 2000947  Size: SH
  16. Install the clutch plate onto the A/C compressor.

  17. Object Number: 2000942  Size: SH
  18. Install the ORIGINAL clutch plate retaining nut and using the J 37872 , hold the A/C compressor clutch from rotating.
  19. Tighten
    Tighten the screws to 25 N·m (18 lb ft).


    Object Number: 2000977  Size: SH

    Important: Make certain that the clutch plate does not drag or interfere with the pulley when rotated.

  20. 11) Measure the air gap between the clutch plate and the clutch pulley. The air gap should be 0.3-0.7mm (0.012-.028 in). If the air gap is not within specification, remove shaft nut and clutch plate and use an alternate shim included in the service kit to achieve the proper air gap.
  21. Remove the ORIGINAL clutch plate retaining nut and install the NEW nut provided in the kit.
  22. Tighten
    Tighten the screws to 25 N·m (18 lb ft).

  23. Remove the A/C compressor from the compressor stand or other suitable support fixture and remove the cap or tape from the A/C compressor ports.
  24. Install the A/C compressor to the vehicle. Refer to Air Conditioning Compressor Replacement
  25. Leak test the fittings using the J 39400-A