Compressor Clutch: Service and Repair

DISASSEMBLY AND ASSEMBLY





COMPONENTS

CLUTCH HUB AND PULLEY

DISASSEMBLY





1. Remove the clutch hub retaining bolt with the aid of a spanner wrench.





2. Pull the clutch hub and shims from the compressor shaft. If the hub cannot be pulled from the compress shaft, screw an 8 mm bolt into the shaft hole of the clutch hub to force the hub from the shaft.





3. Remove the pulley retaining snap ring.





4. Pull the pulley the bearing assembly from the compressor.

REASSEMBLY
1. Clean the pulley bearing surface of the compressor head to remove any dirt or corrosion.





2. Install the pulley and bearing assembly on the compressor. The bearing is a slip fit on the compressor head and, if properly aligned, should slip on the compressor head.





3. Install the pulley retaining snap ring with the bevel side of the snap ring out.





4. Place one nominal thickness spacer shim inside the hub spline opening and slide the hub on the end of the compressor shaft.





5. Thread a new hub retaining bolt into the end of the compressor shaft. Tighten the hub retaining bolt.

Tightening torque : 10.2 - 15.3 Nm (102 - 153 kg.cm, 7.5 - 11.3 lb.ft)

NOTE: Do not use air tools.





6. Check the clutch air gap between the clutch hub and the pulley mating surfaces with a feeler gauge. The air gap should be as follows:

Standard : 0.35 - 0.75 mm (0.014 - 0.030 in.)

Check at three locations equally spaced around the pulley.

7. If the clutch air gap is not within the dimensions specified above, repeat steps 4 through 6 with the various thickness shims until the air gap is between the specified limits.

CLUTCH FIELD COIL

DISASSEMBLY





1. Remove the clutch hub and pulley following the procedure given.
2. Install shaft protector tool on the nose opening of the compressor.
3. Install the puller on the compressor as shown in the illustration.

Place the tip of the puller forcing screw on the center dimple of the shaft protector and the jaws of the puller around the back side of the field coil.

4. Tighten the forcing screw with a wrench to pull the coil loose from the compressor front head.

NOTE: Do not use air tools.

REASSEMBLY
1. Clean the coil press diameter of the front head to remove any dirt or corrosion.
2. With the compressor in a vertical position (nose up), place the coil in position on the front head of the compressor. Assure that the clutch coil electrical connector is positioned correctly.
3. Place the coil pressing tool in position over the compressor nose and the inner radius of the field coil.





4. Position an eight (8) inch, two jaw puller to the compressor and pressing tool as shown in the illustration. The jaws of the puller should be firmly engaged with the rear side of the compressor front mounts and the forcing screw should be piloted on the center of the pressing tool.
5. Tighten the forcing screw with a wrench until the coil is pressed completely onto the compressor front head. Check to assure that the field coil bottoms against the front head at all points around the coil outer diameter
6. Install the clutch pulley and hub on the compressor as outlined.