About the crown wheel carrier. The trunnions where the carrier is supported
by the side bearings are very thin. I became aware of two Arnolts that had
failures there, one of which I had sold. I took a look at the differential in my
last remaining car and found that it had failed as well. The load was being
supported at that point by the half shaft. In the other two cases the gears
were scrambled so I caught mine just in time. So we had new ones made to a design
which is much stronger. This was done by picking bearings that had larger
bores. The machinist that made them made extras and the last time I spoke with
him (2 years ago) he still had some on his shelf. I don't know the situation
now, but if anyone is interested, I can contact him. I can, at least, provide
photos and bearing specs.
Bill Watkins