[R-390] Who needs a green wheel?

[AI2Q]

Claudio:

As I described previously on this list, my R-390-non-A was missing the
coveted green gear, too, so I disregarded it entirely as I went about the
task of degreasing and degunking this grand old radio. I didn't disassemble
the geartrain. I soaked it, cleaned it, and lubed it, but didn't loosen or
move any gears, clamps, or shafts after pulling the RF deck.

To get it back in sync after the big cleanup, first I set the RF deck racks
to the appropriate settings (rear cam line markings) as per the TM photo,
for what they should be at 02 000 (though the Veeder-Root counter was not
connected yet). I did that by manually turning the big split gear, moving
the cams around and around until they lined up. I visually checked to see
that the bandswitch contacts aligned properly by poking my beady eyes under
the chassis.

I then placed the RF deck on the chassis, loaded the brass split gear, and
dropped the assembly onto the gearset, with the counter set at 02 000. Then
I raised the right-hand front side of the RF chassis (as you face the set)
using the screwdriver technique described in the TM, not dis-engaging the
gears already set in the previous step, and turned the MEGACYCLE CHANGE
shaft a few turns clockwise. I then dropped the right-hand side onto the
loaded gear, and used the knob to turn the shaft and entire engaged gearset
down to the 0.5 MC band.

I then raised the chassis again, and turned the MEGACYCLE CHANGE shaft and
gear fully CCW again, and then placed the loaded gear in place, dropping the
chassis on the gears. Turning the shafts through the range of 00 to 31 and
the full 000 to 999 range on the VFO shaft (plus over-run) moves the cams
through their positions properly. The small subchassis moves up and down as
well.

Vy 73, AI2Q, Alex in Kennebunk, Maine
http://users.adelphia.net/~alexmm/ai2q.htm

 .-.-.


-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net]On Behalf Of Claudio Spiritelli
Sent: Wednesday, May 12, 2004 4:09 PM
To: r-390 at mailman.qth.net
Subject: [R-390] Green wheel on 390


To All,

after several 390A, I decide to restore a 390(non A).
I was not aware of the Green wheel and on mine it did not to exist at all.
Only after I realize that the mechanics was going out of sync, I went into
Internet and I start to look and I was made aware of the Green wheel.
TOO LATE
My question:
is it sufficient to move the MC shaft to 2   and then move the KC shaft
until all the cams align perfectly with the lines (including the one
controlled only by the MC shaft that is already aligned since I have MC on
2)?
Then I can move the dial to the appropriate reading 2. 000.

 It appears to me to simple of  a solution, do I miss something?
Is here a different procedure to align once the Green wheel is not installed
and mechanical alignment is lost?


Thank you for your help.

Claudio