Ok, I finally took the Eaton M62 supercharger (off a SLK) apart to change bearings and oil. I also found why it went boink: the electric clutch bearing seized and killed the clutch coil:
exactly which model and year is the car, the supercharger is comming up in my parts database, it apears the complete clutch can be purchased as a spare part.
I would guess it came off a 1999-2000 SLK. I am going off a limb since I bought it off ebay to use in a project.
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