Re: Quattro Digest V2 #449

[Peter Orban <ORBAN@NRCAMT.IAMT.NRC.CA>]

From: "Graydon D. Stuckey" <graydon@apollo.gmi.edu>
Date: Thu, 21 Sep 1995 09:45:26 -0400 (EDT)
Subject: Re: 4wd Mechanics

On Thu, 21 Sep 1995, David Kavanagh staff wrote:

> > system.  Lets take that one step further, and build a hollow crankshaft,
> > and run the front driveshaft up the middle!!  That would allow the engine
>
> Graydon, do you realize what you are saying? Just think about the crankshaft
> for a moment and you will realize that this is impossible!
...

It is not impossible, just think about bearing journals with big diameter
e.g. 5-6" and an offset of 1.5" for a 3" stroke. There is enough overlap
that you can run through a shaft. The rotational inertia would be high
though.


From: steveb@newkla.kla.com (Steven Buchholz)
Date: Thu, 21 Sep 95 07:19:15 PDT
Subject: QTC/other quattros?: Drive-shaft axial bearing number

> Well, I looked in my toolbox this morning and found that I kept the
> original axial bearing, so I am quite certain that I have the right
> number :)
>
> The original bearing was made by INA with a part number of: 6006RSR
>
> The replacement was made by FAG and had a few more numbers on it (at
> least the box had more numbers):
>
> 	6006.2RSR.T.C3
>
> BTW - for those of you who do not know this already, even though
> Audi considers the unit to be a single replaceable module and thus
> will not sell repair parts, I have found it to be quite rebuildable,
> with parts readily available.  I posted a rebuild procedure quite
> some time ago but I haven't seen it in the archives as yet.  Send
> me direct e-mail if you would like a copy.  Caveat ... this was
> done on an '83 QTC, but from looking at the driveshaft on the '88
> 5000 it looks like it may still apply, but YMMV.
>


Later cars had the yoke carrier welded to the prop shaft, so you can not
just unbolt and replace the bearing.

Peter
--
Peter Orban
National Research Council of Canada
Internet: peter.orban@nrc.ca