[R-390] Lubricant for R-390A/URR

[Joe Foley]

It sounds to me like the dial lock plate is rubbing on
the lock mechanism.

I use Marvel Mystery Oil on my transmission gears,
seems to work well.  Sounds like you need to clean the
hardened white grease off the gears first though.

Joe





--- Robert Simpson <_bobs@pacbell.net> wrote:
> I have recently taken my receiver out of storage and
> took it thru a very
> slow power-up using a variable transformer -
> watching very closely for
> smoke.  All went well and simply touching a short
> piece of wire to the
> antenna brought in WWV at 10 mhz quite clearly.  It
> had been in storage for
> about 8 years - in a heated and air-conditioned
> environment.
> 
> I noticed, however, that the KHZ operated smoothly
> but made a sqeaking
> sound.  Past unpleasant experience with commonly
> found household lubricants
> left a messy varnish-like residue which was very
> difficult to remove.  Any
> ideas on what might be a good lubricant?  The cams
> are dry.
> 
> Also, the gears themselves had a white grease on
> them when my receiver was
> initially obtained.  Is there a special lubricant
> for this?  Where can it
> be obtained?  Is there an alternative?
> 
> Thanks
> 
> My receiver: R-390A/URR made by Capehart SN: 1070
> (mostly).  It has been
> thru the Depot Maintenance System so the set isn't
> "pure".
> 
> Bob Simpson (an amateur radio operator wannabee) 
> _bobs@pacbell.net
> 
> 
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> R-390 mailing list
> R-390@mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/r-390


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