[s-cars] How-to: AAN Serpentine Belt Tensioner Rebuild

[JR]

Yeah that was what I found too.  My bearing was alright, but the spring 
loaded part was shot.  I could pry the roller away from the belt with a 
wrench and it would stay where I pried it to leaving actual slack in the 
belt.  I'm lucky I didn't throw the belt.  Rebuilding the tensioner part 
that actually creates the tension is either not possible or not 
cost/time effective.  I just ordered the tensioner with roller from 
Scott Mockry (SJM) for $179, which if I recall was significantly less 
than the stealership.  Here's Scott's info in case you don't already 
have it.  Might as well get a belt while you're at it as the one  you 
have may have a shortened life span due to the bad tensioner.

_http://www.sjmautotechnik.com 
<http://www.sjmautotechnik.com/parts_products/return_policy.html>

_or

SJM Autotechnik Parts Order Line
Phone: 503-244-AUDI
(503-244-2834)

Thanks,

JR


Robert Rossato wrote:
> The only part that would be replaceable would be the bearing for the pulley itself, and this would require drilling out some rivets and reassembling with bolts (unless you can find appropriate sized rivets and installation tool).  The bearing is a standard part - part number is something like 6203???  Don't recall for sure.  Just know it's got a "6" in it and some alpha identifiers at the end.  How's that for help?
>
> In any case, it sounds like you're describing a problem with the spring tensioning portion of the assembly, which as far as I know, is not something you can fix.
>
> Bob
>
>  -------------- Original message ----------------------
> From: "Paul Heneghan" <paul at heneghan.co.uk>
>   
>> Hello Fred & JR and others.
>>
>> My S6 Avant developed a serp belt tensioner problem hours before a holiday
>> in France. Fortunately, I was able to swap in the one from my wife's saloon
>> (took about 15 mins), so the holiday went ahead.
>>
>> Now I'm back, and need to fix the tensioner. Apparently Fred Munro wrote up
>> a how-to on replacing the bearing. Was this the bearing for the idler wheel
>> (which is fine), or the bearing for the tensioning bit (which is in a really
>> bad state)?
>>
>> Any BTDTs or pointers to the pdf gratefully received.
>> Paul
>>
>> 1995 S6 Avant (UK spec)
>> 1996 S6 (UK spec)
>>
>> p.s. now I know why the serpentine belt broke last month - the tensioner was
>> pressing the edge of the idler into the middle of the belt.  Bits of the
>> belt ended up EVERYWHERE (except inside the timing belt cover - lucky!).
>>     
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