High Pressure Safety Valve HVAC: Service and Repair
COMPRESSOR PRESSURE RELIEF VALVE REPLACEMENTTOOLS REQUIRED
J 39500-B R-134a A/C Refrigerant Recovery, Recycling and Recharging System (ACR4)
REMOVAL PROCEDURE
1. Remove the engine cover.
2. Recover the refrigerant using the J 39500-B.
3. Clean the valve seat area on the rear head.
4. Remove the pressure relief valve (1).
INSTALLATION PROCEDURE
1. Lubricate the O-ring of the new pressure relief valve (1) using new 525 viscosity refrigerant oil.
2. Install the pressure relief valve (1).
NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.
Tighten
The pressure relief valve to 9 N.m (80 lb in).
3. Evacuate and recharge the system using the J 39500-B.
4. Leak test the system.
5. Install the engine cover.