A/C Compressor Clutch Check

1. Check the pressure plate for discoloration, peeling, or other damage. If there is damage, replace the clutch set (see A/C COMPRESSOR CLUTCH OVERHAUL  ).
2. Check the pulley bearing play and drag by rotating the pulley by hand. Replace the clutch set with a new one if it is noisy or has excessive play/drag (see A/C COMPRESSOR CLUTCH OVERHAUL  ).
   NOTE: The pulley and the pressure plate were mated at the factory by a burnishing operation. Always replace the pulley and the pressure plate as a set. Replacing only one part of the clutch set will cause clutch slippage.
   Fig 1: Checking Pulley Bearing Play And Drag By Rotating Pulley

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Measure the clearance between the pulley (A) and the pressure plate (B) all the way around. If the clearance is not within specified limits, remove the pressure plate (see A/C COMPRESSOR CLUTCH OVERHAUL  ) and add or remove shims as needed to increase or decrease clearance.

   Clearance: 0.35-0.60 mm (0.0138-0.0236 in) 

   NOTE: The shims are available in three thicknesses: 0.1 mm, 0.3 mm, and 0.5 mm.
   Fig 2: Measuring Clearance Between Pulley (A) And Pressure Plate (B) All Way Around

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
4. Measure the resistance of the field coil. If the resistance is not within specifications, replace the field coil (see A/C COMPRESSOR CLUTCH OVERHAUL  ).

Field Coil Resistance: 3.9-4.3 Ω at 68 °F (20 °C) 

Fig 3: Measuring Resistance Of Field Coil

Courtesy of AMERICAN HONDA MOTOR CO., INC.