Compressor Clutch: Testing and Inspection

Checking The Rotor Bearing Play And Drag:

- 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.

Rotor Pulley And Armature Plate Clearance:

- 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: 0.50 +/- 0.15 mm (0.02 +/- 0.006 in)

Armature Plate Shim Location:

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.

Thermal Protector Continuity Check:

- Check the thermal protector for continuity. If there is no continuity, replace the thermal protector.
- Check the field coil for resistance.
Field Coil Resistance:
3.2 +/- 0.15 ohm at 68°F (20°C)

Field Coil Resistance Check:

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