Rotating Torque Check
NOTE:^ It may be necessary to remove the A/C compressor from the vehicle for this test.
^ The rotational torque of a used A/C compressor should be checked if excessive A/C compressor drag is suspected.
1. Recover the refrigerant from the system.Refrigerant Recovery
2. Remove refrigerant hose and A/C manifold and tube assembly from A/C compressor. Use care not to allow dirt to enter A/C compressor.
3. With A/C clutch disengaged. rotate the A/C compressor shaft and note the torque required to rotate the shaft one complete revolution, not the starting torque.
4. If the rotational torque exceeds 13 N.m (9.6 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 assembly, and leak test, evacuate, end charge the system.
6. Check the system for proper operation.