[R-390] Finally!!!

[Bob Camp]

Hi,

The only real way I have ever found to clean up the anti backlash gears it
to pop them apart. Once you do that just about anything will clean them. I
mostly use alcohol based cleaners these days. I suspect that a mixture of
75% alcohol and 25% water would do every bit as good as anything I use. The
water is there to keep the fire risk down .... The obvious disadvantage is
that you can get a rust problem if you do a dunk and drip wash process.

Teflon grease and silicon based oils can be a chore to get back off. Some of
them are fairly immune to the normal solvents. A lot of it depends on
exactly which one was used and how it has aged.

The traditional cleaners still work the best - Freon and Tri Chlor do an
excellent job. Of course they also nuke the ozone and / or kill you.

The final recommendation is good old WD-40. The smell may be a bit much in
doors but it is a pretty good cleaner. Don't depend on it as a lubricant
though.

    Take Care!

        Bob Camp
        KB8TQ



----- Original Message -----
From: "Jim Brannigan" <jbrannig@optonline.net>
To: "Bob Camp" <ham@cq.nu>; <r-390@mailman.qth.net>
Sent: Monday, December 30, 2002 7:23 PM
Subject: Re: [R-390] Finally!!!


> Thanks to all for the suggestions,
>
> I've been going over the radio and alignment procedures.  Since it is very
> clean, I will only replace the Rippel capacitors.  If some voltages are
out
> of spec. I will check and replace components as necessary.   I don't
believe
> in wholesale component replacement.
> To Bob, for the "grease" comment.  The only grease on the gears is the
> Teflon grease I put on there years ago.  I'm working indoors, what is the
> mildest solvent I can use?
>
> And Horrors.....the serial number on the back panel does not agree with
the
> serial number on the front plate.....I guess it is not quite the virgin I
> thot it was.....
>
> Sorry, no digital camera, no pictures.......
>
> Jim
>
>
>
>