Compressor Clutch: Testing and Inspection

Clutch Inspection





- Check the rotor pulley bearing play and drag by rotating the rotor pulley by hand. Replace the clutch set with a new one if it is noisy or has excessive play/drag.





- Turn the rotor pulley by hand and measure the clearance between the rotor pulley and armature plate all the way around. If the clearance is not within specified limits, the armature plate must be removed and shims added or removed as required.

CLEARANCE: 0.35-0.65 mm (0.014-0.026 in)





NOTE: The shims are available in four sizes: 0.1 mm, 0.2 mm, 0.4 mm, and 0.5 mm of thickness.

- Release the compressor clutch connector from the connector holder.





Check the thermal protector for continuity.

Check the field coil for resistance.

Field Coil Resistance: 3.2 ± 0.15 ohm at 20°C (68°F)





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