[T3] Endplay measurements

[Jim Adney]

On 24 Aug 2015 at 20:33, Phil Hof wrote:

> With the flywheel off, I measure about 0.012" of endplay in the
> bearing itself, so almost the entire endplay is in the bearing it
> seems. It will have to await teardown to find out if the wear is in
> the bearing or the case (or quite unlikely, in the crank itself). 

No, this is not a crank problem, although it doesn't mean that the 
crank doesn't also need work.

This means that the #1 main bearing has come loose in the case. The 
case will have to be turned oversize on the diameter and undersize on 
the thrust. IIRC, there is only 1 thrust undersize, which is 1 mm, 
but RIMCO can do what you suggested and cut a minimal amount off the 
case thrust face and open up the thrust on a undersize thrust bearing 
to fit your case. They then stamp a number on the case that tells 
them what's been done, so you can order bearings from them next time, 
if needed. I've had them do this a number of times and it works well, 
but not everyone can do it. Most shops can't.

You're luck you caught this before the bearing spun and ruined the 
case.


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