[R-390] Need green gear info.

[Roger L Ruszkowski]

Roy,

The double-D hole when properly set on the stud nut mounting point
let the gear keep the whole gear train from being moved.

As I have not looked at a Real R390 (not a A) since Korea in
72, I do not remember if some of the R390 gear train stayed in the
chassis when the RF deck comes out.

If we can find a gear, there is more than one way to mount it
in place and keep it from rotating.

Paul provided the following from the parts TM.

The parts list at the end of the manual lists a locking gear this way:

O309 - Gear: spur type; steel; locking; 23/64" OD x 1/8", ID x 1/4" lg
o/a; mts on 1/8" shaft; Colins Rad part/dwg No. 506 1879 302.  "Locking
Gear" - Signal Corps stock # 2Z4878A-231.

I do believe he did quote the TM exact here complete with 23/64 typo. I do
not
remember the green gear being .359" inch diameter.

I thought it was a 1.359 dia. At 70 teeth it would be about 16 pitch.

Are the gears in the drive train 16 pitch gears in general?

Is the hole in the center of the gear?