Electromagnetic clutch, design - GF83.55-P-2101-03A
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Electromagnetic clutch (A9k1)
The pulley (1) on the A/C compressor drive shaft (4) is driven by a poly-V-belt. It turns on the ball bearing (3) around the magnetic coil (5) fastened to the A/C compressor housing. The pressure plate (6) with rubber insert (7) is connected to the A/C compressor drive shaft (4) by splines (8) allowing it to move in the axial direction.