need help diagnosing S/C noise that's not the bearing
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
need help diagnosing S/C noise that's not the bearing
Getting desperate... Can't figure out a bad metallic noise coming from the front of the super charger. I was sure it was the supercharger pulley bearing but I replaced that today with no change to the rattle. Before that, I replaced the tensioner. I took a video of how it sounds when running and how the clutch on the pulley rattles when not spinning when you move it by hand, is that normal?
Any help would be very much appreciated.
Thanks
Patrick
Any help would be very much appreciated.
Thanks
Patrick
Last edited by kneedeep; Jun 25, 2014 at 08:06 PM.
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
Forgot one other thing... With the new bearing installed there is no more play or room between the friction material. It now may be too close (not sure) but it had no change in the noise.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,242
Likes: 7
From: Canada
2004 E55 AMG
I am trying to diagnose a similar problem but yours is definitely the pulley since mine is solid.
Here is the thread
https://mbworld.org/forums/w211-amg/...lse-video.html
Here is the thread
https://mbworld.org/forums/w211-amg/...lse-video.html
Senior Member
Joined: Jun 2014
Posts: 471
Likes: 32
W211 E55 2003
Try removing shims from behind the pulley and get the clearence right.
EDIT:
should also mention that it seems the pulley plate that you are moving at the end is moving way too much.. mine is basicly solid. I think it might be a problem that needs to be fixed (new pulley?)
Last edited by Elhonaz; Jun 23, 2014 at 01:17 AM.
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
Here is what it looks like now after the bearing replacement. Still a ton of noise when just moving by hand. The bearing is new and made no noise so I know its not that. The gap now seems way better but I'll get a feeler on it to check, could be a bit close.
It seems like the noise is either the loose clutch plate itself or the black cylinder that the clutch pushes against (no idea the name of that is) between the pulley and s/c. Both seem to make noise when I spin them by hand.. Is that normal at all? Motor has 74k on it.
Any ideas on how to narrow it down?
Last edited by kneedeep; Jun 23, 2014 at 08:42 PM.
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
I'm going to keep this thread updated just in case someone with the same issue finds it helpful later. I'm still stuck on the diagnoses but I know the clutch plate is definitely loose on the pulley. So it seems like my next best step is a new pulley. All the ones I see for sale are the smaller diam. ones, has anyone run them without a tune?
Trending Topics
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
Thanks Shardul, I agree that it's now too close. Do you think that would cause the rattle noise I'm hearing?I was really hoping it was the bearing but other than fixing my large clutch gap issue, it hasn't made any change to the noise.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
So I just went to measure the gap and I realized I don't know how to do that. There are springs or something like it in the clutch plate. Should I measure the gap that I can fit in before it moves the plate or the max size I can fit in the gap when the plate is pushed back. My guess is its the first but that basically means my new gap is about 0mm.
How many shims do I need and any idea where to get them because I did a quick search and found nothing.
How many shims do I need and any idea where to get them because I did a quick search and found nothing.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,242
Likes: 7
From: Canada
2004 E55 AMG
So I just went to measure the gap and I realized I don't know how to do that. There are springs or something like it in the clutch plate. Should I measure the gap that I can fit in before it moves the plate or the max size I can fit in the gap when the plate is pushed back. My guess is its the first but that basically means my new gap is about 0mm.
How many shims do I need and any idea where to get them because I did a quick search and found nothing.
How many shims do I need and any idea where to get them because I did a quick search and found nothing.
lol Shardul sells S/C pulley - get one from him and shims come free lol
Thread Starter
Junior Member
Joined: May 2014
Posts: 26
Likes: 0
2004 cl55
I received my new shims from Shardul (thanks so much!). Before I bolt it all back up I wanted to take a video of the pulley itself. When I shake it the noise you hear is from the friction material hitting the pulley. I assume this isn't normal?
Last edited by kneedeep; Jul 1, 2014 at 03:14 PM.
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
