Rotating Torque Check

Check the rotational torque of a used A/C compressor if excessive drag is suspected.
1. Following proper procedures, recover refrigerant. Observe all safety precautions. Refrigerant Recovery
2. Remove the A/C manifold and tube assembly from the A/C compressor. Use care not to allow dirt to enter the A/C compressor.
3. With the A/C clutch disengaged, rotate the compressor shaft and note the torque required to rotate the shaft one complete revolution. Do not measure the starting torque.
4. If the rotational torque exceeds 10 N.m (7 Lb-Ft), replace the A/C compressor.
5. If the rotational torque is less than specified, excessive drag does not exist in the A/C compressor. Install the A/C manifold and tube and leak test. Following proper procedures, evacuate and charge the system. Evacuation
6. Check the system for proper operation.