[Vwdiesel] Front end bearing noise (again)

[Mark Shepherd]

I was just looking at an Audi 4000 'Haynes' and this particular book gives
a better view of the diff. It also shows  left and right tapered roller
bearing sets which are shimmed... Now if the transverse set-up is the same
or similar then my hunch of the noise coming from this region may be
bearing fruit...
MTM
----- Original Message -----
From: Sandy Cameron <scameron at compmore.net>
To: <vwdiesel at vwfans.com>
Sent: Monday, November 07, 2005 4:33 PM
Subject: Re: [Vwdiesel] Front end bearing noise (again)


>
> >
> >To revisit:  Wheel bearing noise, increases in intensity with loading of
> >right side.
>
> >The noise is getting a little louder, and continues to disappear
> >if the left side gets loaded, and come in strong if the right
> >side is loaded.  No signs of driveshaft/CV involvement.
> >
>
> The front wheel bearings are symetrical double race ball bearings.
>
> Both of them get side loaded when turning either way, Could be either
front
> bearing. You've replaced the right? so it's probably the left. They get
side
> loaded whether they are on the out side or inside of the turning circle.
The
> sound inside seems to come from the middle of the floor.
>
> Jack each front wheel, very securely, block the rear wheels, put the car
in
> high gear and rev to 35 mph, and check each knuckle with a mechanics
> stethescope ( with the long rod)
>
> Safety and disclaimers:
>
> DO NOT LIE UNDER THE CAR in case the unmentionable happens.
> (tie the rear towing loops to a big tree with chains)
>
> try to reach around the tire, turn the steering wheel a bit, whatever, to
> get access,
>
> Beware the tire, which can grab clothing.
>
> Not to be attempted by persons who have no fear of machinery. My
grandfather
> was killed in  a factory accident, attempting to slide a belt from a dead
> pulley to a live pulley on a line shaft. The belt caught his coat and he
> went around the shaft with it.
> He had been doing it that way for years.
>
> Sandy
>
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