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Car Forum / Audi Cars / December 2005

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A6 V6-12V 97'  - Rattle from front end of engine resolved..

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Ottar T - 04 Dec 2005 20:12 GMT
Hello

Just to put out some information to people that are hearing lots of rattle  
at start-up of the V6-12V engine..

After listening to the bad sounds for too long I finally got to do the  
work.. I dismounted the serpentine belt first to rule out the involved  
parts there.. However there was no change to the bad sounds..

I therefore dismounted the covers for the timing belt and found the  
cause.. A slack timer-belt... adjusting the timing belt tensioner made the  
horrible sounds disappear..

I can't blame any other than myself, as I changed the timing belt this  
spring.. Seems like the bolt-tension/ friction barely overcome the forces  
from the running timing belt.. It even got loose again just after having  
put on the covers again, so I had to redo the work..

A sunshine story in mid winter.. :-)

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Regards

Ottar T

Ronny - 04 Dec 2005 23:07 GMT
> Hello
>
[quoted text clipped - 15 lines]
>
> A sunshine story in mid winter.. :-)

Maybe when you changed the timing belt, you didn't change the tensioners?

Always worth doing....
Ottar T - 05 Dec 2005 21:47 GMT
På Mon, 05 Dec 2005 00:07:04 +0100, skrev Ronny <Admin@1337hosts.com>:

>> Hello
>>
[quoted text clipped - 28 lines]
>
> Always worth doing....

Changed tensioner, timing belt roller, water pump and thermostat.. So all  
were done by the book..
However I got a bit confused about if the tensioner should be rotated  
clockwise or anti clockwise to tension the belt..
There seem to be a difference between the 12V and the 24V as the later  
have an extra spring loaded tensioner system..

This time I chose to rotate the tensioner clockwise..

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regards
Ottar T

 
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