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Compressor Clutch: Adjustments

SPECIAL SERVICE TOOL(S) REQUIRED

Spanner Wrench:





Compressor Clutch Holding Tool:






Before disassembling A/C compressor for repair, it is important to check the A/C clutch air gap. This will help determine if the clutch is not engaging, or if the A/C compressor is failing internally.






1. Check A/C clutch air gap between clutch hub and pulley mating surfaces with a feeler gauge. The air gap should be between 0.35 and 0.85 mm (0.014 and 0.033 inch). Check at three locations equally spaced around the pulley.
2. If A/C clutch air gap is not within specification, use the following steps to adjust air gap.

NOTE: If recommended gap is not attainable with the available shims, clutch disc and pulley should be inspected for wear or damage. Replace as required.






3. Use Spanner Wrench T70P-4067-A to (or Compressor Clutch Holding Tool T94P-19703-AH) hold the A/C clutch disc and hub assembly in position while removing the clutch bolt.






4. Pull the A/C clutch and shims from the A/C compressor shaft. If the A/C compressor clutch disc and hub assembly cannot be removed, screw an 8 mm bolt into the clutch pulley hub to force the A/C compressor clutch from the shaft.
5. Start by placing the nominal thickness shim on the end of the splined shaft and slide the A/C compressor clutch disc and hub assembly onto the end of the A/C compressor shaft.
6. Install the clutch bolt into the end of the compressor shaft. Use Spanner Wrench T70P-4067-A (or Compressor Clutch Holding Tool T94P-19703-AA) to hold the A/C clutch disc and hub assembly in position while tightening the clutch bolt. Tighten the A/C clutch bolt to 11-14 Nm (8-10 lb-ft).

CAUTION: Do not use air tools to tighten the bolt.






7. Recheck A/C clutch air gap between clutch disc and pulley mating surfaces with a feeler gauge. The air gap should be between 0.35 and 0.85 mm (0.014 and 0.033 inch). Check at three locations equally spaced around the pulley.
8. If A/C clutch air gap is not within specification, repeat Steps 3 through 7. Install the correct shim to achieve the recommended air gap.