Section 12-03C: Compressor and Clutch, SD-7H15
1996 F-Super Duty Motorhome Chassis Cab Workshop Manual
ADJUSTMENTS

A/C Clutch Air Gap

SPECIAL SERVICE TOOL(S) REQUIRED
DescriptionTool Number
Spanner WrenchT70P-4067-A
Steering Wheel PullerT67L-3600-A

NOTE: Before disassembling an A/C compressor (19703) for repair, it is important to check the A/C clutch air gap. This will help determine if the A/C clutch (2884) is not engaging, or if the A/C compressor is failing internally.

  1. Check the A/C clutch air gap between the A/C clutch hub and the A/C clutch pulley (2E884) mating surfaces with a feeler gauge. The air gap should be between 0.41 and 0.79mm (0.016-0.031 in.). Check at three locations equally spaced around the A/C clutch pulley.

  1. NOTE: If a desired gap is not attainable with the available shims, the A/C clutch hub and A/C clutch pulley should be inspected for wear or damage. Replace as required.

    If the A/C clutch air gap is not within specification, use the following steps to adjust air gap.

  1. Use Spanner Wrench T70P-4067-A to hold the A/C clutch in position while removing the A/C clutch retaining hex nut.

  1. Pull the A/C clutch and shims from the A/C compressor shaft. If the A/C clutch cannot be removed, install Steering Wheel Puller T67L-3600-A on the A/C clutch, and use puller center bolt to force the A/C clutch off the A/C compressor shaft.

  1. Start by placing the smallest nominal thickness shim inside the A/C clutch spline opening, and slide the A/C clutch onto the end of the A/C compressor shaft.

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

    Install the clutch hex nut into the end of the A/C compressor shaft. Use Spanner Wrench T70P-4067-A to hold the A/C clutch and hub in position while tightening the A/C clutch hex nut. Tighten to 34-40 Nm (25-30 lb-ft).

  1. Recheck the A/C clutch air gap between the A/C clutch hub and A/C clutch pulley mating surfaces with a feeler gauge. The air gap should be between 0.41 and 0.79mm (0.016 and 0.031 in.). Check at three locations spaced equally around the A/C clutch pulley.

  1. If the A/C clutch air gap is not within specification, repeat Steps 3 through 7. Install the correct shim(s) to achieve the desired air gap.