Refrigerant Pressure Sensor / Switch: Service and Repair

Compressor And Clutch Assembly - Rear View:

Remove or Disconnect

1. Discharge the Refrigerant System.

2. Disconnect the electrical connector from the high-pressure cut-off switch in the rear head of the compressor.

3. Remove the high-pressure cut-off switch retaining ring, using J-5403 internal snap ring pliers.

4. Remove high-pressure cut-off switch from compressor.

5. Remove old O-ring seal from switch cavity using J-9553-1 O-ring removal tool or equivalent.

If existing high-pressure cut-off switch will be reinstalled in compressor, a new O-ring seal must be used and preferably a new retainer ring should also be used. A new switch kit has the O-ring and retainer ring included.

Install or Connect

1. Check switch cavity and O-ring groove in the rear head for dirt or foreign material and clean as necessary. Install new O-ring coated with clean refrigerant oil into groove in switch cavity.

2. Lubricate the high-pressure cut-off switch housing with clean refrigerant oil and carefully insert switch into switch cavity until switch bottoms in cavity.

3. Using J-5403 snap ring pliers, install switch retaining ring with high point of curved sides adjacent to the switch housing. Be sure retaining ring is properly seated in the switch cavity retainer ring groove. Leak test per procedure.