I replaced my S-belt when I was at all my fuel lines about 6 months ago.
Today I took it off and ran the engine because I have a Rough idle that is bad enough that it shakes my review mirror. It ran much quieter but not totally vibration free.
I put the belt back on and now the noise seems even louder. When it was off I checked all pulleys and they ran free without any binding. I put a screw driver between the Spring tensioner and the shock. The nailing noise was gone. I called MB and I asked about the shock and how my times the part changed. He said it's been up reved 3 x's.
A guy on this link http://mercedesforum.com/forum/archi...p/t-16044.html says to align the belt. How do you do this? I just looped mine around the path according to the drawing.
He also talks about a change in the Alternator pulley, that requires a different shock.
Have any of you changed out your alternator pulley? Do any of the other pulleys wear out?
I am buying a K-40 relay and S-Belt Shock. Do the parts shops sell the same items as the Stealer? These two parts are about 70 dollars than Autohaus.