GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 33017 Pulley and Bearing Installer
    • J 33019 Bearing Staking Tool
    • J 33020 Pulley Puller
    • J 33023-A Puller Pilot
    • J 34992 Compressor Holding Fixture
    • J 6083 Snap Ring Pliers
    • J 8092 Driver Handle - 3/4 in - 10
    • J 8433-1 Puller Bar
    • J 8433-3 Forcing Screw
    • J 9481-B Bearing Installer
    • J 9398-A Bearing Remover

Installation Procedure


    Object Number: 1251992  Size: SH

    Note: Do not support the rotor by resting the pulley rim on a flat surface during the bearing installation or the rotor face could be damaged.

  1. Invert the pulley rotor and place it on a support block to fully support the rotor hub during bearing installation.
  2. Align the new bearing squarely in the pulley bore. Use the J 9481-B  (2) and the J 8092  (1), drive the bearing fully into the pulley bore.

  3. Object Number: 1251993  Size: SH
  4. Place the J 33019  (1, 2) in the rotor hub core. Shift the rotor and bearing assembly on the block to give full support to the hub under the staking pin. A heavy-duty rubber band may be used to hold the staking tool pin in the guide. The pin should be properly positioned in the guide after each impact on the pin.

  5. Object Number: 1251995  Size: SH
  6. Strike the pin with a hammer until a metal stake, similar to the original, is formed down to, but not touching, the bearing. The metal stake should not contact the outer race of the bearing to avoid the possibility of distorting the outer race. Stake in 3 places 120 degrees apart.

  7. Object Number: 1251996  Size: SH
  8. With the compressor mounted to the J 34992  (3), position the rotor and bearing assembly on the compressor housing.
  9. Position the J 33017  (4) and the J 33023-A  (2) directly over the inner race of the bearing.
  10. Position the J 8433-1  (5) center forcing bolt on the J 33023-A  (2) and assemble the 2 through-bolts and the washers through the slots on the J 8433-1  (5). Thread the through-bolts into the J 34992  (3). The thread of the through-bolts should engage the full thickness of the fixture.
  11. Tighten the J 8433-3  (1) in the J 8433-1  (5) to force the pulley rotor and bearing assembly onto the compressor housing.

  12. Object Number: 1251988  Size: SH
  13. Install the rotor and bearing assembly retainer ring using the J 6083  (1).
  14. Reinstall the clutch drive plate and hub assembly. Refer to Compressor Clutch Plate and Hub Assembly Removal.
  15. Install the compressor. Refer to Air Conditioning Compressor Replacement.
  16. Connect the negative battery cable.
  17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.