Compressor Clutch: Service and Repair

A/C Compressor Clutch Overhaul

Special Tools Required

- A/C Compressor Kit 07AAF-000A150

1. Remove the center bolt while holding the pressure plate (A) with the A/C clutch holder (B).






2. Remove the pressure plate (A) and the shim(s) (B), taking care not to lose the shim(s). If the clutch needs adjustment, increase or decrease the number and thickness of shims as necessary, then reinstall the pressure plate, and recheck its clearance.

NOTE:

- The shims are available in three thicknesses: 0.1 mm, 0.3 mm, and 0.5 mm.
- Do not pry on the pressure plate with screwdrivers or similar tools. Prying damages the pressure plate and the pulley.
- When replacing the clutch set, place a trial stack of shims, 1 mm total thickness, on the A/C compressor shaft. Install the pressure plate, and check its clearance. If the clearance is not with specification, add or subtract shims as needed.





3. Remove the snap ring (A) with snap ring pliers, then remove the pulley (B). Be careful not to damage the pulley or the A/C compressor.

NOTE: Do not hammer or pry on the pulley to remove it. Using a hammer damages the A/C compressor. If the pulley is difficult to remove, use a commercially available pulley removing tool. Make sure the jaws of the pulling tool engage the back face of the pulley, not the pulley grooves.






4. Remove the screws from the field coil ground terminal (A) and the bracket (B). Disconnect the connectors (C) from the field coil and the variable capacity control solenoid valve, then remove the wire harness (D). Remove the snap ring (E) with snap ring pliers, then remove the field coil (F). Be careful not to damage the field coil or the A/C compressor.





5. Reassemble the clutch in the reverse order of disassembly, and note these items:

- When replacing the field coil, check that the new coil has the correct resistance.
- Install the field coil with the wire side facing down, and align the boss on the field coil with the hole in the A/C compressor.
- Clean the pulley and A/C compressor friction surfaces with contact cleaner or other non-petroleum solvent.
- Install new snap rings, note the installation direction, and make sure they are fully seated in the grooves.
- Make sure that the pulley turns smoothly after it's reassembled.
- Route and clamp the wires properly to prevent damage by the pulley.

6. Cycle the A/C by running the engine at 1,500-2,000 rpm and setting the climate control temperature to Lo with the A/C button ON. This procedure seats the clutch friction surfaces, and increases clutch torque capacity.