SC Belt rubbing
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Super Member
Joined: Mar 2010
Posts: 643
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From: London UK
2013 W204 C63 AMG, 2008 W221 S65 AMG
SC Belt rubbing
Hi all
Has anybody has any issues with the SC belt rubbing on the heater core return pipe that runs underneath the alternator, mine has been rubbing but its an old pipe so not sure if the damage is from an old faulty tensioner.
Also not sure if its rubbing because the old pipe is expanding due to the damage.
Has anybody has any issues with the SC belt rubbing on the heater core return pipe that runs underneath the alternator, mine has been rubbing but its an old pipe so not sure if the damage is from an old faulty tensioner.
Also not sure if its rubbing because the old pipe is expanding due to the damage.
Last edited by alexanderfoti; Feb 20, 2015 at 03:31 AM.
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Joined: Nov 2001
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From: Southern California, USA
2003 CL55 AMG
It should not rub. The damage you see appears to be from a belt being thrown. As noted a tensioner gone bad yields that result plus more.
I had to replace a couple itmes when my left side tensioner went bad at around 100,000 miles and the drive belt got thrown. One fo them was a air intake tube which got gashed. To this day I am still picking out pieces of shred belt from nooks and crannies.
I had to replace a couple itmes when my left side tensioner went bad at around 100,000 miles and the drive belt got thrown. One fo them was a air intake tube which got gashed. To this day I am still picking out pieces of shred belt from nooks and crannies.
Thread Starter
Super Member
Joined: Mar 2010
Posts: 643
Likes: 72
From: London UK
2013 W204 C63 AMG, 2008 W221 S65 AMG
Agreed. It does appear as though my best tensioner is still tensioning very well and may have been changed in the past but I have a new one on its way.
I also have a new hose as I suspect the hose may be expanding at higher RPM's but I have no way of checking this. I dont think this one is as likely as Mercedes have none in stock in the UK, but I suppose my 180 crank pulley puts it closer to the hose than a stock car.
I will get the hose changed out and will report back. There is a good 30mm clearance with the engine running at idle.
I also have a new hose as I suspect the hose may be expanding at higher RPM's but I have no way of checking this. I dont think this one is as likely as Mercedes have none in stock in the UK, but I suppose my 180 crank pulley puts it closer to the hose than a stock car.
I will get the hose changed out and will report back. There is a good 30mm clearance with the engine running at idle.
Last edited by alexanderfoti; Feb 18, 2015 at 01:53 PM.
Thread Starter
Super Member
Joined: Mar 2010
Posts: 643
Likes: 72
From: London UK
2013 W204 C63 AMG, 2008 W221 S65 AMG
Yes, a very similar tensioner on the bottom right for the aux belt, but that belt is not anywhere near this hose and couldnt case this damage I dont think.
