Compressor Clutch: Service and Repair
REMOVAL1. Remove a/c drive belt
2. Disconnect compressor clutch wires from the harness.
3. Remove compressor mounting bolts and lift compressor from its mounting bracket.
4. Rotate the compressor assembly to gain access to the front of the compressor clutch. Support the compressor so that the weight of the compressor is not on the hoses. DO NOT let the compressor hang from the hoses.
Front Plate Retaining Nut R&R (VDC):
5. Use a 13mm socket and a spanner wrench to remove the shaft nut and lock washer.
6. Thread the front plate removal tool into the hub.
Front Plate R&R (VDC):
7. Tighten the center bolt of the removal tool to pull off the front plate.
Front Plate Shims:
8. Remove and save the shaft shim(s).
A/C Pulley Snap Ring R&R:
9. Remove the pulley retaining snap ring with suitable snap ring pliers.
A/C Pulley R&R:
10. Slide the pulley off the compressor.
A/C Coil Snap Ring R&R:
11. Remove the coil retaining snap ring using suitable snap ring pliers.
A/C Coil R&R:
12. Remove the screw that anchors the coil wires to the compressor housing. Remove the coil from the compressor end plate.
INSTALLATION
A/C Coil Alignment:
1. Align the hole in the back of the coil with the pin in the compressor end plate.
A/C Coil Snap Ring R&R:
2. Install the coil retaining snap ring with the beveled side facing outward and both of the snap ring ends away from the alignment pin. Make sure the snap ring is properly seated in the groove.
3. Fasten the coil wires to the compressor housing.
A/C Pulley R&R:
4. Install the pulley and bearing assembly onto the compressor.
A/C Pulley Snap Ring R&R:
5. Install the pulley retaining snap ring with the beveled side outward. Make sure that the snap ring is properly seated in the groove.
Front Plate Shims:
6. Install the original shim(s) on the compressor shaft. If the original shims are not available, use a temporary set of shims that equal 0.100 in (2.54 mm).
7. Install the front plate, making sure the key on the compressor shaft aligns with the keyway on the front plate.
Air Gap:
8. Use a feeler gauge to measure the air gap between the front plate and the pulley face. The air gap should be between 0.020 and 0.035 in. (0.05 and 0.9 mm.). If the air gap is incorrect, add or remove shims on the compressor shaft to obtain the proper air gap.
Front Plate Retaining Nut R&R (VDC):
9. Install lock washer and shaft nut. torque the shaft nut to 155 +/- 20 in.lbs. (17.5 +/- 2 N-m.).
10. Recheck the air gap after torquing the shaft and adjust shim thickness if necessary.