Tools Required

J 39400-A Halogen Leak Detector

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 O-Ring Replacement.

Important: 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 Caution in the Preface section.

3. Install the pressure relief valve to the compressor.

Tighten the pressure relief valve to 8.8 N·m (78 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 .