SLK 230 (170.447) L4-2.3L SC (111.973) (2000)
Compressor Electromagnetic Clutch: Description and Operation
SuperchArger Electromagnetic Clutch, Arrangement/Task/Design/Function
ENGINE 111.943 /944 /973 /975
Note: Do not repair supercharger electromagnetic clutch.
Arrangement
At belt pulley of supercharger
Task
Switching compressor on and off silently
Absorbing rotary vibrations
Design
80
Magnetic coil holder
80/1
Magnetic coil
80/2
Wedge locking ring
80/3
Two-row grooved ball bearing
80/4
Belt pulley
80/5
Rotor (friction lining)
80/6
Riveted joint
80/7
Armature (friction lining)
80/8
M8 thread (for pressing off)
80/9
Plastic washer
80/10
Stroke
80/11
Circlip
Function
The electromagnetic clutch is activated by means of a GND signal supplied by the engine control module. The voltage is supplied either by the relay
module or the fuse and relay module, respectively.