Rachmiel Vaseur

Hi i'm new here but long story short i own a 2002 c32 amg and the supercharger pulley seems to be stuck can somebody help me with this?

Ginco

Which part of the pulley? Remove the belt from the pulley and try to spin the ribbed part while holding the smooth round black part behind the pulley. If you’re holding the clutch and the pulley still doesn’t spin, the bearing is sized. If you’re running the engine and the belt is just slipping over the pulley and not spinning the pulley or supercharger, your supercharger is most likely siezed. You need to investigate further, just saying “the pulley won’t spin” doesn’t help diagnosis at all.

alb3rtt

Does it move when the car is running? If so, I would suggest taking off the pulley and adding a few shims until the gap is 0.20-0.30mm.

Flydutch

I got the following and I am concerned the SC is seized. I drove the car around the block very slowly to test something else. then smoke came from the engine compartment. stopped and switched off and found the plastic cover scored by heat. took it off and that found that black rubber/plastic covered part of the clutch assembly of the SC very hot. waited a bit and started the engine again the ribbed pulley runs with the engine easily (No belt slipping) but that black clutch part stand still. Switched off again and try to turn that black ring part but it will not budge. It that black ring part connected to the worm shaft in the SC (Gear) and the ribbed pully running on the bearing inside that black ring? To me it looks like the SC is seized up. but how can that happen without any serious load?
Please advise, thanks guys.

TxGerman

Yes it should rotate freely with the engine off. Best way to test it is to remove the belt and check how freely both the clutch pulley spins as well as the SC driven shaft (the part you describe as the black ring). A SC is a machine like the rest of your car and it depends upon proper lubrication and proper clearances. First question is, when was the oil last checked/changed? Not your engine oil, your SC oil.