[R-390] R-390A RF Deck Synchronization - HELP !

[Rick Popovich]

I'm a regular reader but not always a regular contributor to this group,
however, I know that the groups collective knowledge will be able to
assist me or at least point me in the right direction to find the
information I need.

 

I am in the process of reviving a Amelco R-390A. I am now working on
synchronizing the RF Deck. I've done a number of R-390 decks with great
success, however this one is giving me fits. The previous owner appears
to have tried to make adjustments to the gears and as a result a number
of them were moved in or out on their shafts; placed in sync with gears
that they are not supposed to contact or moved out of alignment with the
gears that they are supposed to mesh with. 

 

I have removed the deck from the receiver and have aligned all the cams
as outlined in an article on one of the well know R-390A sites but I
have noticed there are other connections to the gear train that operate
a shaft or shafts on the underside of the RF Deck. I have not yet been
able to find out how to sync or set the positions of these gears as I am
almost certain they are also out of sync as a result of all conditions I
described above.

 

Hopefully someone has dealt with this problem before and can enlighten
me before I get on the crazy train !