[T3] Transmisison fun

[Tim Shreve]

Interesting and useful information.  Thanks for documenting this.  And
timely for me as I just tore down three trannies to rebuild one for the T34.
All of the studs I have from the three tear downs have a center section that
doesn't have any threads on it.  No "Bulge" on them in the center, but also
no threads in the center.

Tim

-----Original Message-----
From: Soren Jacobsen [mailto:snj at blef.org] 
Sent: Saturday, September 22, 2018 12:06 AM
To: type3 at vwtype3.org
Subject: Re: [T3] Transmisison fun

On 09/21 22:25, Jim Adney wrote:
> 
> First, the stud connecting your 2 shafts must be too short. I don't 
> think this can happen with the stock stud, but I'd have to check the 
> parts list to see how long it should be.  It's also possible that 
> someone "cleaned up the threads" in the input shaft, enabling a stock 
> length stud to fall (almost) entirely inside it.

I don't think there was anything wrong (in the sense of "different from what
it left the factory with") with the stud that was on my transmission.  I had
help with this problem from a local guy who's had a business rebuilding VW
manual transmissions exclusively since the early 70s.  He knew of the issue
(though said it's rare -- lucky me!) and told me that his preventative fix
for decades has been to stuff a wad of paper (yes, really) into the main
shaft threads to keep it from moving.
That seems crazy to me when a couple bucks will get you a shouldered stud,
but what do I know?

Anyway, this issue has been documented elsewhere online.  This thread has
some good discussion of the problem:

https://www.thesamba.com/vw/forum/viewtopic.php?t=557933

...and this one has a bunch of links to other threads that feature the
problem as well:

https://www.thesamba.com/vw/forum/viewtopic.php?t=490895

I don't think VW would've introduced the shouldered stud without reason.
Progressive refinements :)

Soren