Hi Guys, I am trying to fix my Audi-powered Vanagon with 5HP19 auto gearbox.
Engine and trans are basically seized after 20+ years, so I used a donor
A6 to replace both (tested a few days: they are okay).
After moving my reversal gears to the new trans, Vanagon runs, drives
(kind of, I think needs more trans fluid, since 3rd to 5th dont´drive
anything ). I think I can get this fixed by bleeding with all gears
shifted through on a hoist.

However: The reversal gears are loud as hell, a speed-dependent whine.
The old gearbox had this a little, but not that bad. I think it´s the
tension of those gears and their seating rings (is that the correct
term?!). Maybe too loose or to tight.

Question:
Does anyone know how to align the tension of these bearings in their
housing? It must work similarly to aligning the Vanagon diff bearing
tension. But there is no way of doing it while it´s assembled. How did
ZF do it?
All repair manuals show the internals of the planetary stuff and torque
converter, but never the middle gears and/or diff. I know there are
alignment shims available, but how to determine which is needed?

Any help is appreciated, autotrans reapir shops are useluss in Germany.

Regards
Raimund