How to Measure Clutch: T/CCI (York Style)

​If the part number on the clutch being replaced cannot be read, use the following procedure to determine the required clutch number.
 
1. Determine if 12 or 24 volt (Black Wire= 12V, Green Wire= 24V
2. Determine if clutch is single, double, or poly groove.
3. Measure outside diameter of pulley.
4. Measure width of pulley groove:
          a. Single and double groove= measure the width of pulley groove.
          b. Poly groove= count the number of grooves.
5. Measure accurately the A-B distance:
          a. Single and Double Groove= measure the distance from the       compressor mounting hole on the side of the compressor to the middle of the 
​              rear belt groove on the pulley (the rear belt groove is closest to the compressor).
          b. Poly Groove= measure the distance from the compressor mounting hole on the side of the compressor to the middle of the first groove on the
​              pulley.
6. Determine the number of wires.

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