GM Service Manual Online
For 1990-2009 cars only

Compressor Shaft Seal Install HT6 - Direct Mount

Tools Required

    • J 39893 Pressure Test Adaptor
    • J 34614 Shaft Seal Protector
    • J 42136 A/C Lip Seal Remover

    Object Number: 157231  Size: SH
  1. Dip the new compressor shaft seal (1) in clean 525 viscosity refrigerant oil and assemble the seal onto the J 42136 , by turning the handle clockwise.
  2. Install the J 34614 onto the compressor shaft.
  3. Using a rotary motion, slide the new compressor shaft seal onto the compressor shaft until the seal is fully seated.
  4. Remove the J 34614 by turning the handle counterclockwise.

  5. Object Number: 157228  Size: SH
  6. Install a new compressor shaft seal retaining ring (2), using internal snap ring pliers (1).
  7. Make sure that the chamfer side of the retaining ring is facing up and that the retaining ring snaps into the groove.


    Object Number: 157239  Size: SH
  8. Leak test the compressor, using the J 39893 .
  9. 6.1. Install the J 39893 onto the compressor and pressurize the suction and high-side of the compressor with R-134a.
    6.2. Temporarily install the shaft nut.
    6.3. With the compressor in a horizontal position, rotate the compressor shaft in the normal direction of rotation, several turns by hand.
    6.4. Leak test the seal area and repair if necessary.

    Remove the shaft nut.

  10. Recover the refrigerant.
  11. Remove the J 39893 .
  12. Remove and clean any excess oil resulting from installing the new seal parts from the shaft and inside the compressor neck.
  13. Install the compressor clutch plate and hub assembly. Refer to Compressor Clutch Plate/Hub Assembly Install .
  14. Remove the compressor from the J 41790-A .
  15. Install the compressor into the vehicle. Refer to Air Conditioning Compressor Replacement .

Compressor Shaft Seal Install V7

Tools Required

    • J 39500-B R-134a A/C Refrigerant Recovery, Recycling and Recharging System (ACR4)
    • J 5403 Snap Ring Pliers
    • J 23128-A Seal Seat Remover and Installer
    • J 33011 O-Ring Installer
    • J 34614 Shaft Seal Protector
    • J 39893 Pressure Testing Connector

    Object Number: 210186  Size: SH

    Notice: Seals should not be re-used. Always use a new specification service seal kit. Be sure that the seal to be installed is not scratched or damaged in any way. Make sure that the seal is free of lint and dirt that could damage the seal surface or prevent sealing.

  1. Dip the new seal seat O-ring in clean 525 viscosity refrigerant oil. Assemble the new seal seat O-ring onto the J 33011 .
  2. Insert the J 33011 into the compressor neck until the installer bottoms.
  3. Lower the moveable slide of the J 33011 in order to release the O-ring into the seal O-ring lower groove. Do not release the O-ring into the compressor neck top groove.
  4. Rotate the J 33011 in order to seat the O-ring.
  5. Remove the J 33011 .

  6. Object Number: 258047  Size: SH
  7. Dip the new seal in clean 525 viscosity refrigerant oil. Assemble the seal to the J 23128-A by turning the handle clockwise.
  8. Engage the knurled tangs of the J 23128-A with the stamped steel case side of the lip seal (1) in order to ensure that the flared-out side of the lip seal (1) faces toward the compressor.

  9. Object Number: 258048  Size: SH

    Notice: Handling and care of the seal protector is important. If the seal protector is nicked or the bottom flared, the new seal may be damaged during installation.

  10. Place the J 34614 over the end of the compressor shaft.

  11. Object Number: 258050  Size: SH
  12. Slide the new seal (1) onto the shaft using a rotary motion until the seal stops.
  13. Ensure that the seal contacts the O-ring. Do not dislodge the O-ring. Disengage the installer from the seal.
  14. Remove the J 23128-A and the J 34614 .

  15. Object Number: 258064  Size: SH
  16. Using the J 5403 , install the new seal retainer ring (1) with the flat side against the seal. Use the sleeve from J 33011 in order to press in the seal retainer in order to ensure that the seal snaps into the groove.
  17. Perform a leak test using the following procedure:
  18. 13.1. Install the J 39893 on the rear head of the compressor.
    13.2. Connect the gage charging lines and the J 39500-B .
    13.3. Pressurize the suction and the high-side of the compressor using R-134a Refrigerant.
    13.4. Temporarily install a M9 x 1.25 threaded nut on the shaft.
    13.5. With the compressor in a horizontal position, rotate the compressor shaft in the normal direction of rotation several turns by hand.
    13.6. Leak test the seal area. Correct any leaks found.
    13.7. Recover the refrigerant.
    13.8. Remove the shaft nut.
  19. Remove any excess oil from the shaft and from the inside of the compressor neck.
  20. Install the clutch plate and hub assembly. Refer to Compressor Clutch Plate/Hub Assembly Install .
  21. Install the compressor into the vehicle. Refer to Air Conditioning Compressor Replacement .