Apparent bearing noise, maybe tire

[Jim Jordan]

Hi,

One way to tell for sure is to find an empty parking lot, if that's
possible, and do some slow figure 8's.  By slow I mean don't try to pretend
you're on a skid pad.  If a bearing or CVJ is going bad, the noise will
amplify in one direction or another.  I'm not sure if it's when the bearing
is loaded or unloaded, probably unloaded.  If you check the bearings totally
unloaded, use a stethoscope.

Don't eliminate tire noise until you've checked.  If one or more of your
radial tires has been plugged instead of being patched properly from the
inside, it will often separate the plies and cause a thumping noise which at
speed sounds a lot like bearing or CVJ noise.  I had one of these that cost
me untold dollars in balancing, shaving, rounding.  Then there are some
tires that become squirrelly on their own.  2 tires from my wife's BMW could
not roll a straight line if pushed;  they made the track of a snake.  That's
sure to induce tire noise.

HTH.

Jim Jordan

  
>  Message: 8
>  Date: Mon, 27 Jun 2005 19:00:04 -0400
>  From: Huw Powell <audi at humanspeakers.com>
>  Subject: Re: Bearings (VAG)
>  To: tihol tiholov <tihol.tiholov at sd27.bc.ca>
>  Cc: quattro at audifans.com
>  Message-ID: <42C084F4.5000400 at humanspeakers.com>
>  Content-Type: text/plain; charset=us-ascii; format=flowed
>  
>  
>  > Do bad wheel bearings get more quiet when unloaded or 
>  under more load?
>  
>  What I have always heard is that they get louder when loaded 
>  - ie, when turning away from the bad side.
>  
>  --
>  Huw Powell
>  
>  http://www.humanspeakers.com/audi
>  
>  http://www.humanthoughts.org/

-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.323 / Virus Database: 267.8.5/32 - Release Date: 6/27/2005