Compressor Pulley Clutch

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Compressor Pulley Clutch

The A/C compressor clutch for Volvo FH12, FH13, and FM series trucks connects and disconnects the compressor drive from the engine through an electromagnetic clutch system.

When the A/C is turned on, electrical current energizes the coil, pulling the pulley plate to engage with the compressor shaft. When turned off, the field disengages, allowing the pulley to spin freely.

Technical Specifications Compressor Pulley Clutch:

  • Part Name: A/C Compressor Clutch
  • Function: Engages/disengages engine drive to A/C compressor
  • Voltage: 24V DC
  • Pulley Material: Hardened steel
  • Pulley Diameter: 132–136 mm (varies by model)
  • Compatible Models: Volvo FH12 / FH13 / FM9 / FM12
  • OEM Reference: 20487063 / 20487066

 Features Compressor Pulley Clutch:

  • OEM-standard magnetic clutch
  • Smooth and quiet operation
  • Heat and wear-resistant pulley
  • Long service life in heavy-duty use
  • Easy installation and reliable connection

 Installation Tips Compressor Pulley Clutch:

  • Clean compressor shaft before installation
  • Adjust the air gap to specification (typically 0.4–0.6 mm)
  • Use appropriate puller tools to avoid damage
  • Ensure 24V power connection is secure

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