GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Venture Ext. 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Compressor Shaft Seal Replacement

Removal Procedure
    • J 42136 A/C Lip Seal Remover/Installer
    • J 34614 Shaft Seal Protector
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  3. Remove the electric cooling fan assembly. Refer to Engine Cooling Fan Replacement in Engine Cooling.
  4. Install a piece of cardboard where the electric cooling fan was in order to protect the radiator.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Remove the tire and wheel on the passenger side of the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  7. Remove the engine splash shield on the passenger side of the vehicle. Refer to Engine Splash Shield Replacement in Body Front End.
  8. Remove the compressor clutch plate and hub assembly. Refer to Compressor Clutch Plate/Hub Assembly Replacement .

    9. Object Number: 392621 Size: SH
  9. Use the snap ring pliers in order to remove the A/C compressor shaft seal retainer ring.
  10. To keep any dirt or foreign material from getting into the compressor, thoroughly clean the following components:
    11. • The inside of the compressor neck area surrounding the shaft
    • The exposed portion of the compressor shaft seal
    • The compressor shaft
    • The O-ring groove

    Object Number: 404845 Size: SH
  11. Fully engage the lip of the J 42136 into the recessed portion of the seal (1) by turning the handle clockwise.
  12. Remove the compressor shaft seal from the compressor with a rotary pulling motion.
  13. Recheck the shaft and inside of the compressor neck for dirt or foreign material and make sure these areas are perfectly clean before installing the new compressor shaft seal.

Installation Procedure

    Object Number: 404845 Size: SH
  1. Dip the new seal (1) in clean 525 viscosity refrigerant oil.
  2. Install the A/C compressor shaft seal onto J 42136 , by turning the handle clockwise.
  3. Install the J 34614 onto the compressor shaft.
  4. Using a rotary motion, slide the new compressor shaft seal onto the compressor shaft until the seal is fully seated.
  5. Remove the J 42136 by turning the handle counter clockwise.
  6. Remove the J 34614 from the compressor shaft.

    7. Object Number: 392621 Size: SH
  7. Install a new compressor shaft seal retaining ring, using internal snap ring pliers. Make sure the chamfer side of the retaining ring is facing up and that the retaining ring snaps into the groove.
  8. Remove and clean any excess oil resulting from installing the new seal parts from the shaft and inside the compressor neck.
  9. Install the compressor clutch plate and hub assembly. Refer to Compressor Clutch Plate/Hub Assembly Replacement .
  10. Install the engine splash shield on the passenger side of the vehicle. Refer to Engine Splash Shield Replacement in Body Front End.
  11. Install the tire and wheel on the passenger side of the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.
  13. Remove the piece of cardboard.
  14. Install the electric cooling fan assembly. Refer to Engine Cooling Fan Replacement in Engine Cooling.
  15. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  16. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging .
  17. Leak test the A/C system. Refer to Leak Testing .