Shudder? Possible cause uncovered?

[Bernie Benz]

OK John, I apologize!

The axle half shaft has but one flange, the inboard tranny flange.  
The other end is supported by the hub thru the CV joint.

Either the tranny flange is loose on its tranny output shaft or the  
diff bearings have lost their preload. But 1/8” !!!
1st is easy check when replacing seal.  2nd is tranny overhaul,  
resetting bearing preload and gear clearances.

Bernie



On Mar 4, 2008, at 8:22 AM, <jlagnese at massed.net> wrote:

> There is up and down play on the axle flange. It is probably about  
> 1/8" to 1/4" in either direction.
> ---- Original message ----
> Date: Mon, 3 Mar 2008 20:10:41 -0800
> From: Bernie Benz <b.benz at charter.net>
> Subject: Re: Shudder? Possible cause uncovered?
> To: "John S. Lagnese" <jlagnese at massed.net>
> Cc: 200q20V mailing list <200q20v at audifans.com>
> >Come on John! Explain, or expect to be dropped.
> >
> >The axle has total freedom of movement, constrained only by the
> >bearing assemblies on either end. Which bearing assembly do you think
> >(?) is your problem?
> >
> >Bernie
> >
> >
> >On Mar 3, 2008, at 6:12 PM, John S. Lagnese wrote:
> >
> >> I think that I have found the problem to this and the reason for
> >> the leak.
> >> The passenger side axle is loose. It moves up and down. What is
> >> involved in
> >> a repair. Is this terminal?
> >> John
> >> ----- Original Message -----
> >> From: "Kent McLean" <kentmclean at comcast.net>
> >> Cc: <quattro at audifans.com>; <200q20v at audifans.com>
> >> Sent: Wednesday, February 27, 2008 7:39 AM
> >> Subject: Re: Shudder?
> >>
> >>
> >>> John S. Lagnese wrote:
> >>>> This is in my 91 200 TQ 20V with 126k miles. It is overdue on the
> >>>> 120K
> >>>> timing belt change. I'm experiencing an odd shudder at highway
> >>>> speeds.
> >>>> This had been occuring after about 1/2 hr at highway speed. I
> >>>> thought it
> >>>> may be the transmission. This is how I found out about the
> >>>> transmission
> >>>> leak. I checked the gear oil level.
> >>>> Oil in tranny and still the shudder. It feels like an engine
> >>>> miss, but
> >>>> this doesn't happen at lower speeds and similar rpm. What else
> >>>> should I
> >>>> check? Could this be an inner (passenger side) cv joint?
> >>>> Thanks,
> >>>
> >>> If you think it's an engine miss, pull the codes.
> >>> <http://www.sjmautotechnik.com/trouble_shooting/20vtecu.htm>
> >>>
> >>> --
> >>> Kent McLean
> >>> '99 A4 Avant, w/ quattro, V6, Tiptronic. "Yeah, Baby!"
> >>> '94 100 S Avant, "Moody"
> >>> '91 200 TQA #1, undecided
> >>> '91 200 TQA #2, up in smoke 2
> >>> '89 200 TQ, "Bad Puppy", up in smoke
> >>> _______________________________________________
> >>> 200q20v mailing list http://www.audifans.com/mailman/listinfo/ 
> 200q20v
> >>
> >> _______________________________________________
> >> 200q20v mailing list http://www.audifans.com/mailman/listinfo/ 
> 200q20v