[R-390] RF subchassis separation

[Mark Richards]

Now finally doing a rebuild of my R-390A.  Gear train has been 
disassembled, cleaned, and now in the re-assembly process I hit a snag:  
there's a post which hosts the Differential Gear Assembly, and it is 
very loose.  It cannot be screwed down tightly.  I suspect that this 
post is press-fit into the gear backing plate.  As the post is loose, I 
think this is accounting for the fact that the Differential Gears are 
not aligning properly with adjacent gears, nor with the front gear 
cover.  There is considerable mechanical friction when the front plate 
is attached.

So, my questions:

1. Can the RF Subchassis be separated from the gear assembly plate and...
2. Can the Differential Gear Assembly post be repaired?

A photo of the offending post:

     http://kumichan.net/private/03-03-2014 20-28-04.png


I have another complete gear/RF Subchassis that is of dubious electrical 
condition, but is mechanically sound.  If I can separate gears from 
chassis, then maybe an option is to swap out the RF Subchassis with the 
good gear set?


/K1MGY