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 refrigerant from the system following recommended service procedures.
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 Nm (9.6 ft lb), 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, and charge the system.
6. Check the system for proper operation.