[T3] Noisy Tranny

[jadney at vwtype3.org]

On 26 Sep 2023 at 20:16, Keith Park wrote:

> It DOES work fine, but it has a bad bearing,

Don't understand why you remain fixed on bearings. Sure, one of the possibilities is a bad 
bearing, but there are lots of other possibilities. Consider a few:

Insufficient shimming of the R/P, allowing them to move and no longer mesh correctly.

Input shaft pushed in, releasing snap ring, letting reverse gear slide rearward, and now it can 
run up against the ring gear.

Pinion main bearing insufficiently locked, so it can back out, now not meshing properly and 
misaligned with Ring and ALL the gears on that shaft.

Forward end of either shaft not properly locked, allowing movement and whining.

Wrong nose cone installed on late body, allowing shaft to move and come out of alignment.

And this is just off the cuff, spur of the moment, etc. Have you tried draining the oil and 
checking for excess metal on the drain plug magnet?

Right now the only data you have is that it's noisy. Unfortunately, I don't know of any easy 
way to narrow things down, short of disassembly. I guess one thing you might do would be to 
push an inspection snake in the fill hole and check out the R/P, the pinion securing bolts or 
special nut, and the reverse gear. You could also just grab the output flanges and see if they 
have any axial play (they should not.)

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