[R-390] What to do now

[Barry]

I can't recall if this is one of the gears built like this, but if it is the
kind with a collar brazed to the gear, sometimes this causes them to become
slightly convex.  I had this problem on a couple of split gears on my last
rebuild.  If they are not exactly flat, you can VERY GENTLY flatten them
(they are quite soft).  After doing this, these gears spun together quite
nicely.

Barry - N4BUQ


> I have discovered an interesting thing while cleaning the gear train on my
> Motorola 56. The split gear #59 on the drawing seems to be out of
> specification.  This is the gear on the center bottom cam shaft. The two
halves fit
> together fine but the snap ring will not go down into the groove. It was
like  that
> when I disassembled it and may have been built like that. Seems to have
held
> up that way for almost 50 years. It looks like the individual gear halves
are
> too thick. What would be the general suggestion to do here? These gears
are
> stainless and would be hard to sand down to fit. I thought this was most
> interesting to find a manufacturing defect like this.
>
> Collin
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