High Pressure Safety Valve HVAC: Service and Repair
COMPRESSOR PRESSURE RELIEF VALVE REPLACEMENTTOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
3. Raise the vehicle. Refer to Vehicle Lifting
4. Disconnect compressor clutch electrical connector.
5. Remove the pressure relief valve. Measure and record any PAG oil drained while removing the pressure relief valve. This measurement will be used during refrigerant recharging.
NOTE: When servicing the compressor, keep dirt and foreign material from getting on or into the compressor parts and system. Clean tools and clean work area are important for proper service. The compressor connections and the outside of the compressor should be cleaned before any ON CAR repairs, or before removal of the compressor. The parts must be kept clean at all times and any parts to be assembled should be cleaned with a non-petroleum based solvent and dried with air. Use only lint free cloths to wipe parts. Do not allow solvent to enter compressor or hoses.
INSTALLATION PROCEDURE
1. Lubricate the pressure relief valve O-ring with mineral oil.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the pressure relief valve to the compressor.
Tighten the valve to 12 N.m (106 lb in).
3. Connect the compressor clutch electrical connector.
4. Lower the vehicle.
5. Connect the negative battery cable.
6. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
7. Leak test the component using the J 39400-A.
8. Run the A/C performance test.