The pulley wheel is designed for PK 6 belts (see sectional drawing). The input revolutions of the clutch is set using the different large diameters of the wheel. The pulley wheels are designed like most components, as lightweight components, in order to avoid unnecessary power losses by mass- accelerations. Here the revs ratio is specified: engine - compressor, since the drive train has fixed transmission ratios

Measurements :

Description	Diameter [mm]
Pulley wheel PK6	110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170

!! Inappropriate variation of the pulley wheels, can lead to destruction of the compressor and the engine !!