I redid the drawing George. This is the way I would do
it. I am not locked into the double ball bearings however. Several
needle thrust bearings between the sun gear and the motor plate
would work as well. It is just trickier to set the end play
if you use needle thrust bearings.

This scheme locks everything together in one unit.
You must be careful however that the ring gear cannot
slide back and fourth in the PSRU housing.

Paul Lamar
 
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