High Pressure Safety Valve HVAC: Service and Repair

Compressor Pressure Relief Valve Replacement

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Raise and support the vehicle. Refer to Vehicle Lifting.






Important: Cap or tape the open A/C components immediately to prevent system contamination.

3. Remove the high pressure relief valve.
4. Cap or tape the A/C compressor.

Installation Procedure

1. Remove the cap or tape from the A/C compressor.
2. Lubricate the O-ring on the high pressure relief valve. Refer to O-Ring Replacement.






Notice: Refer to Fastener Notice in Service Precautions.

3. Install the high pressure relief valve.

Tighten the valve to 8 N.m (70 lb in).

4. Lower the vehicle.
5. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
6. Leak test the fittings of the component using J 39400-A.