Its the shaft, or the front diff. Run the van without the drive
shaft. If it goes away completely, its the drive shaft. If it is
still there, but at a different speed, start looking at the diff.

    This is the reason VW states these are not rebuildable. No one
can figure this out...

            Eric                   86-VW4x4
            vw4x4@fyi.net          72-240z
            Pittsburgh, PA USA     1936-Chrysler

On Fri, 31 Dec 1999, Shortlidge D Joel wrote:

> I just tried to reinstall my drive shaft after having the u-joints
> replaced and balanced!  But I got a vibration at 35 mph!  I did not
> loosen the front diff bolts is this the reason or is the shaft out of
> balance???
>
> Joel
>
>
> On Sun, 26 Dec 1999 15:33:29 -0500 (EST) EMZ <vw4x4@fyi.net> writes:
> >   Hi joel,
> >    If you did not remove the trans. or the front dif. and did not
> >change the drive shaft in any way, I fonud that loosening the front
> >dif. mounts are a waste of time. The alignment of the drive shaft
> >will end up unchanged. But if any of the above has changed you need
> >to lossen up (alot), all 3 mounts to the front dif. in order to get
> >it to move, and be adjustable.
> >
> >            Eric                   86-VW4x4
> >            vw4x4@fyi.net          72-240z
> >            Pittsburgh, PA USA     1936-Chrysler
> >
> >
> >On Sun, 26 Dec 1999, Shortlidge D Joel wrote:
> >
> >>         Hey, Syncro owners that have replaced there shaft them
> >selves.  Do you
> >> have to loosen ALL the front diff mount bolts to realign the shaft.
> >Or
> >> can you get away with just loosening the rear two??
> >>         Please e-mail me anyone on the list if you get this message!
> > I am not
> >> on the list so direct e-mail me, I don't know if the e-mail are
> >getting
> >> through, Thanks.
> >>
> >> Joel
> >> ________________________________________________________________
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> >
>