Pressure Relief Valve

REMOVAL

1. Recover refrigerant using an approved refrigerant recovery system.

CAUTION: DO NOT REMOVE HOSES OR LINES BEFORE SYSTEM IS FULLY DISCHARGED.





2. Remove hose bolt from compressor high side and remove hose.





3. Remove pressure relief valve.

INSTALLATION

NOTICE: Use only R-12 Refrigerant oil (mineral) to lubricate O-rings. Use of R-134a (PAG) oil will cause premature corrosion of fitting joints.

1. Lubricate pressure relief valve O-ring with new R-12 mineral compressor oil. Install valve and torque to specification.

Torque: 7.2 N.m (63 in-lbs)





2. Lubricate and install new O-ring on discharge hose with R-12 mineral oil. Install high side hose to compressor high side port. Torque to specification.

Torque: 25 N.m (19 ft-lbs)

3. Evacuate, charge, and leak test the A/C system.