[R-390] Rf Deck MC Change Gear

[ka9egw at britewerkz.com]

Yeah, when I did my rf deck recently I puzzled over this too...finally put
it on "backwards" and it runs in the middle of it's mating gear, no rubbing,
no binding, so I called it a fait accompli and left it be.
73 de ka9egw

-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net]On Behalf Of Dennis
Sent: Wednesday, September 08, 2010 6:35 PM
To: R-390 at mailman.qth.net
Subject: [R-390] Rf Deck MC Change Gear


Just finished rebuilding a RF Deck for 390A, ( I thought).
I calibrated the mechanics and everything seemed to be going smooth, until I
noticed the split gear clamp on the MC ten turn stop.( Gear that advances
detent on diff gear and osc switch. It is the gear , # 115/116    fig 84
p145 / 146 of the y2k manual I have. The photo, as well as another one show
the gear clamp mounted to the front.

I looked at pictures I took before breaking down for cleaning and it shows
the clamp mounted to the front. It also shows wear / rubbing on the clamp.

I remounted this gear / clamp with clamp facing front of radio. However, it
is clearly rubbing the back of the front panel when the gear is properly
engaged. It appears that it should be reversed or mounted with the clamp
facing the rear so as not to bind . There is also a article describing
rebuilding the deck and it says to mount this gear clamp facing the rear.
(even though the pix with it shows it the other way) ????

So, has the clamp style changed, thicker than .200in, or the manual wrong,
or things just wore somehow that there is less clearance than original?

At any rate, looks like I may need to take front panel back off and turn
gear/ clamp around backwards from the diagrams and the way this thing was
set up before I started?

I just cant believe the metal on metal could be correct.

Tnx to all for listening

Dennis
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