[T3] Noisy Tranny

[Jim Adney]

Rebuilding VW trannies is really hard. I suspect that most of the rebuilders 
out there don't bother with all the checking and reshimming that a careful job 
requires. Bearing dimensions are extremely precise, so you can skip the 
shimming if you're only replacing bearings, but I would not be surprised if the 
rebuilders end up mixing and matching ring & pinions to use as many old 
parts as possible.

If you asked for a change in final drive ratio, I'm willing to bet that you got a 
different (used) R/P set with the shims it came with, but no new shimming to 
fit your case. That's not a good choice.

On 24 Sep 2023 at 21:25, Keith Park wrote:

> The one thing I don't do is Trannies,  so I had the trans for the 2056 built
> by a shop on the WC that was recommended by Raby at the time.
> It had to go back initially as the gear whine was so bad that I had to turn
> up the music, it came back, much better, but apparently they should
> Have put some new bearings in that they didn't as now I have a very noisy
> mainshaft bearing.
> 
> Tranny still works great, but I started hearing it a couple years ago at
> idle with the clutch engaged at idle, and now its whining pretty good as you
> go thru the Gears.
> 
> No noise with the clutch disengaged, but noisy when its engaged in Neutral
> or any gear, so its not a pilot bearing, and since only the mainshaft is
> turning in neutral (correct?)
> 
> It would have to be one of those bearings correct?
> 
> Years ago the original tranny slowly got noisier and noisier and I think it
> was a secondary shaft bearing, finally chickened out and replaced it.  How
> long can they go on a noisy bearing?
> 
> I don't have time to pull the engine this year, probably not next year
> either and I have a lot of miles ahead.
> 
> Not quite as easy pulling the 2056 as it is the stock engine.  And of
> course, I need to somehow find somebody local here in NY that knows what
> they are doing rebuilding VW transaxles.
> 
> Keith

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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