Timing belt change - marks on flywheel and on vibration damper not aligning

radek at uniserve.com radek at uniserve.com
Mon Dec 10 18:28:59 PST 2012


Well, the timing belt sprocket has a pretty massive key (which is part  
of the casting) that slides into a groove on the camshaft.  The  
sprocket can go in one way only.  The vibration damper, on the other  
hand, has no key and attaches to the flat surface of the sprocket with  
four Allen-head bolts.  It has a small recess at one spot that fits  
over a small bump on the flat surface of the sprocket.  The damper  
also goes in one way only.  And yet, there's misalignment.  I must be  
missing something.

Radek.

------------------------------

> Message: 6
> Date: Mon, 10 Dec 2012 12:17:37 -0500
> From: Huw Powell <audi at humanspeakers.com>
> To: Tony Hoffman <auditony at gmail.com>
> Cc: "<quattro at audifans.com>" <quattro at audifans.com>, Radek
         <radek at uniserve.com>
> Subject: Re: Timing belt change - marks on flywheel and on vibration
         damper        not aligning
> Message-ID: <50C61931.9070009 at humanspeakers.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed

> Since they are doing the TB, it's coming off anyway...

> On 12/10/2012 8:02 AM, Tony Hoffman wrote:

[Hide Quoted Text]
This is exactly what came to mind. The keyway on the timing belt sprocket
that sits behind the damper pulley. BTST plenty of times.

Tony

On Sun, Dec 9, 2012 at 2:55 PM, Cody Forbes <cody at 5000tq.com> wrote:

The key on the pulley could be sheared off, or starting to. It would be a
pretty good idea to pull it off and check.

-Cody Forbes (mobile)



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