A/C High Pressure Switch: Installation

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NOTE: If you reinstall an existing control switch in the compressor, use a new O-ring and a new retainer ring. An O-ring and a retainer ring is included in a new switch kit.

Install the new O-ring into the groove in the switch cavity. See O-RING . Lubricate the control switch housing using new 525 viscosity refrigerant oil.
Install the switch into the switch cavity until the switch bottoms in the cavity. Install the A/C high pressure switch snap ring using a pair of 90 degree angle pliers or Snap Ring Pliers. Ensure that the high point of the curved sides is adjacent to the switch housing. Ensure that the snap ring is properly seated in the switch cavity retaining groove.
Evacuate and recharge the system. See RECOVERY/EVACUATION & RECHARGING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING. Leak test the fittings of the components using a Leak Detector.