Clutch Hub and Pulley

Tools Required:

• Spanner Wrench T81P-19623-MH
• Plate Remover T80L-19703-B
• Shaft Protector T80L-19703-G
• Pulley Puller D81P-19703-B
• Pulley and Bearing Tool T80L-19703-J
• Plate Replacer T80L-19703-F

Removal

1. Remove the clutch retaining nut. Use Spanner Wrench T81P-19623-MH if necessary.

2. Remove the clutch hub and shims from the compressor shaft with Hub Driven Plate Remover T80L-19703-B. Hold the tool with a 1-inch wrench. Tighten the bolt with a 1/2-inch wrench to pull the hub from the compressor shaft.

3. Remove clutch pulley retaining snap ring.

4. Pull the pulley and bearing assembly from the compressor. If the pulley and bearing assembly cannot be removed by hand, use Shaft Protector T80L-19703-G and Pulley Puller D81P-19703-B or equivalent to remove pulley.

Installation

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

2. Install the pulley and bearing on the compressor. The bearing is a slip fit on the compressor head and, if properly aligned, should slip on the compressor head. If difficulty is encountered installing the pulley, gently tap the pulley on the compressor using Pulley and Bearing Tool T80L-19703-J. Ensure pulley bearing is aligned with the compressor head.

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

4. Install the clutch hub on the compressor shaft using the two thickest shims of the shim pack between the clutch hub and the end of the compressor shaft. Ensure shaft key is aligned with the keyway in the clutch hub. Use Hub Driven Plate Replacer T80L-19703-F to press the hub on the compressor shaft if necessary. Do not attempt to drive the hub on the compressor shaft as damage to the compressor will result. Use only the specified tool if the hub will not easily slide on the compressor shaft.

5. Install the hub retaining nut on the compressor shaft. Tighten the nut to 13-20 Nm (10-14 lb-ft). DO NOT USE AIR TOOLS.

6. Check the air gap between the hub and the mating pulley surface in three locations equally spaced around the pulley. Record the air gap readings.

7. Rotate the compressor pulley one-half turn (180 degrees) and again check the air gap in three equally spaced locations. The smallest air gap must be within the specified limits for the air gap. Add or remove shims between the hub and the compressor shaft as necessary until the smallest air gap is within 0.021-0.036 inch.