GP Compressor Motor Housing to Bearing Housing O-ring Replacement

Assuming the compressor is already pulled down and exposed to atmosphere, perform the following:

1. Unbolt the discharge and suction service valves from the compressor.
2. Disconnect the solenoid valve coils, high pressure cutout switch flare, and oil line at the bearing housing.
3. Loosen all the bolts at the motor-bearing housing mating surface. The oil filter housing bolts do not need to be removed.
4. Use an extension and a minimum of a 250 ft-lb impact wrench to loosen the motor rotor bolt. If the rotors continue to spin, it may be necessary to increase the size, or, after loosening the bearing housing bolts, slide the housings apart enough that a maintained pressure will prevent the rotors from turning while the bolt is loosened.
5. Loosen the rotor bolt and bearing housing bolts enough so the O-ring can be removed, and the O-ring groove inspected for damage. Clean the groove and mating surfaces.
6. Cover all sharp edges with smooth plastic, and slightly stretch the new O-ring over the bearing housing. It is important that the new O-ring not rub against any rough or sharp edges.
7. Put a thin film of gasket eliminator such as Loctite 515 on the new O-ring and install.
8. Reassemble the motor and bearing housings. Install the motor-rotor bolt with one or two drops of Loctite 271 and torque to 150 ft-lb.
9. Torque the motor-bearing housing bolts to 170 ft-lb. If the rotor begins to spin while the impact wrench is being used, allow the wrench to stop until the rotor stops turning, then reapply torque.
10. Install new gaskets and replace the suction and discharge service valves. Torque to 175 ft-lb.

Notes

• Refer to RTAA-SVB12A-EN for detailed instructions.

WARNING:

Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.