Compressor Fitting HVAC: Testing and Inspection

A/C MANIFOLD AND TUBE LEAK TEST
1. Tighten A/C manifold and tube retaining bolt to 18-23 N.m (14-16 Lb-ft.).
2. Add refrigerant to the system if necessary.
3. Leak test the manifold O-ring seals using Rotunda R-134a Automatic Calibration Halogen Leak Detector 023-R1003 or equivalent.
4. If no leaks are found, the manifold O-ring seals are good.
5. If a leak is found at the A/C manifold and tube and the A/C manifold retaining bolt is tightened to 18-23 N.m (14-16 Lb-ft.), install new manifold O-ring seals. Repeat leak test.