Supercharger pulley is stuck won't turn
Junior Member
Joined: Mar 2018
Posts: 56
Likes: 11
C32, C32 again, CLS550
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.
Junior Member
Joined: Oct 2019
Posts: 53
Likes: 8
From: Melbourne
2002 C32 AMG (SOLD), 2004 C55 AMG
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.
Junior Member
Joined: Jan 2015
Posts: 42
Likes: 2
Merc S55 AMG Kompressor 2003 & S320 1999
Please advise, thanks guys.
Newbie
Joined: Sep 2021
Posts: 4
Likes: 2
From: KTX
2003 C32 AMG
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.
Please advise, thanks guys.
