[R-390] R390 progress

[Dan Merz]

Paul,  I guess I already did the hard part.  I had the crystal oscillator
chassis out already,  wanting to take a look at the switch/crystal but
stopped at the heater box and put it back in,  thinking I'd better check
some other possibilities first, like the tubes and maybe pinpointing the
problem before tearing things apart.  The oldham coupler disc was nice to me
and stayed in place while I tightened the clamp - need 3 hands for this so I
guess I got lucky.  I didn't even grease it up like the manual suggests to
keep it in place.  My confidence is growing,  thanks for the suggestions/and
relating your experience,  Dan 

-----Original Message-----
From: Paul H. Anderson [mailto:paul at pdq.com] 
Sent: Wednesday, April 27, 2005 8:39 AM
To: AI2Q
Cc: Dan Merz; Flowertime01 at wmconnect.com; r-390 at mailman.qth.net
Subject: Re: [R-390] R390 progress

On Wed, 27 Apr 2005, AI2Q wrote:

> Dan, et al:
>
> Pulling the RF deck out and re-installing it is not difficult---even 
> if you didn't have the green gear. I was entirely successful with my 
> R-390 restoration (see the archives for details) and my set was missing
the gear.
> I simply held the gears in place with duct tape (!) while dropping the 
> chassis back in. Followed the instructions in the TM to the letter. 
> Worked just fine.

If you are slightly patient, you can do the mechanical alignment while it is
installed.  I think you just have to have the crystal deck off the back of
it.

The "hard" part there then becomes putting the oldham coupler back in
between the RF bandswitch and the crystal deck.

Paul