High Pressure Safety Valve HVAC: Service and Repair

Compressor Pressure Relief Valve Replacement

Special Tool
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 [Lifting and Jacking the Vehicle].
3. Remove the pressure relief valve from the compressor.
4. Remove and discard the O-ring from the pressure relief valve. Refer to [Replacement].

Installation Procedure






NOTE: Lubricate the new O-ring prior to installation on the compressor hose.

1. Lightly coat the new O-ring with mineral base 525 viscosity refrigerant oil.
2. Install the new O-ring to the pressure relief valve. Refer to [O-Ring Replacement].

CAUTION: Refer to [Fastener Notice].

3. Install the pressure relief valve to the compressor.

Tightening torque
Tighten the pressure relief valve to 9.8 N.m (87 lb.in).

4. Lower the vehicle. Refer to [Lifting and Jacking the Vehicle].
5. Recharge the A/C system. Refer to [Refrigerant Recovery and Recharging].
6. Test the affected A/C joint for leaks using J 39400-A.