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 .

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the pressure relief valve to the compressor.

Tighten
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 .