High Pressure Safety Valve HVAC: Service and Repair

A/C Compressor Relief Valve Replacement

1. Recover the refrigerant with a recovery/recycling/charging station.
2. Raise the vehicle on a lift.
3. Remove the relief valve (A) and the O-ring (B). Plug the opening to keep foreign matter from entering the system and the A/C compressor oil from running out.






4. Clean the mating surfaces.
5. Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it.
6. Remove the plug, and install and tighten the relief valve.
7. Charge the system.