Honda Pilot: A/C Compressor Clutch Check

Check

1. A/C Compressor Clutch Clearance - Check

1. Check the armature plate (A) for discoloration, peeling, or other damage. If there is damage, replace the clutch set.
2. Check the pulley (B) bearing play and drag by rotating the pulley by hand. Also check for grease leakage from the bearing. Replace the clutch set with a new one if it is noisy, has excessive play/drag, or has bearing grease contamination on the clutch faces.

   NOTE: The pulley and the armature plate were mated at the factory by a burnishing operation. Always replace the pulley and the plate as a set. Replacing only one part of the clutch set will cause clutch slippage.

3. Measure the clearance between the pulley (A) and the armature plate (B) all the way around. If the clearance is not within specified limits, remove the armature plate and add or remove shims as needed to increase or decrease clearance.

Clearance: 0.35－0.65 mm (0.0138－0.0256 in)

NOTE: The shims are available in three thicknesses: 0.3 mm, 0.4 mm, and 0.5 mm.

2. A/C Compressor Clutch Field Coil - Check

1. Measure the resistance of the field coil. If resistance is not within specifications, replace the field coil.

Field Coil Resistance: 3.11－3.37 Ω at 68 ºF (20 ºC)

3. A/C Compressor Clutch Oil Leak Check

1. Remove the armature plate, and inspect the armature plate and pulley friction surface for wear. If there is excessive wear, roughness, or scoring, replace the clutch set.
2. Inspect the friction surfaces and the A/C compressor shaft hub for excess oil. If excess oil is present and it is not from the engine or other system, the A/C compressor shaft seal is leaking. In that case, replace the A/C compressor.

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