## Air Conditioning

#### Compressor Clutch Check

21-26

1. Check the driver clutch for discoloration, peeling or other damage. If there is damage, replace the driver clutch and the pulley assembly (see page 21-27).

1. Check the pulley assembly bearing play and drag by rotating the pulley assembly by hand. Replace the driver clutch and the pulley assembly with a new one if it is noisy or has excessive play/drag (see page 21-27).

1. Measure the clearance between the pulley assembly (A) and the driver clutch (B) all the way around. If the clearance is not within specified limits, remove the driver clutch (see page 21-27) and add or remove driver shims as needed to increase or decrease clearance.

   Clearance:

0.30 - 0.60 mm (0.012 - 0.024 in.)

NOTE: The driver shims are available in three thickness: 0.2 mm, 0.3 mm and 0.4 mm.

1. Check resistance of the clutch coil. If resistance is not within specifications, replace the field coil (see page 21-27).

   Clutch Coil Resistance:

3.4 - 3.8 ohms at 20°C (68°F)

a a a