Compressor HVAC: Testing and Inspection

Compressor Assembly On-Vehicle Inspection

1. Install manifold gauge set (1) as shown in figure.
2. Close Hi (4) and Lo (5) side valves.






3. Run engine at fast idle.
4. Check compressor for the following items.
If defect is found, repair compressor.
- High pressure gauge reading is not low and low pressure gauge reading is not higher than normal.
- Metallic sound
- Leakage from compressor