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A clutch for an automotive air conditioning compressor is composed of three parts. the magnetic coil the pulley the hub the magnetic coil is mounted on the front of the compressor and nestles closely insid the pulley. the Pulley is mounted on the bearing mount extension of the compressor the hub is fastened to the end of the input shaft of the compressor. It normally sits slightly above the surface of the pulley When current is introduced into the coil, the coil becomes magnetic. Then the magnetism is transferred into the pulley and it pulls the hub down to engagement.

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Q: How does an auto ac compressor clutch work?
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