[R-390] 1st addendum topic bushing inspection / repair

[Joe Foley]

Um,....

Can we change that for the KC CHANGE knob?

There are THREE bushings on that shaft, the one on the
front panel should be left "snuggish" so the other two
won't be bound by it.  Also, that shaft is the one
most likely to be bent, being that it is so far from
the protective handles.  On a total rebuild of the
radio it should be removed and centered on a lathe to
be checked for run-out, then straightened.

This will make it run true, not be apt to bind and
will help to keep the DIAL LOCK from binding and
making that awful scraping noise so common on these
radios.

Joe




--- Flowertime01 at wmconnect.com wrote:

> Mark,
> 
> Good question, Thank you.
> 
> There are two bushing in the front panel around the
> Megacycle and Kilocycle 
> shafts. These need alignment. There are also two
> bushing around the BFO and 
> bandwidth shafts for the IF. These need adjusting.
> There is a bushing around the 
> Antenna trim in the R390A. Were you thinking of
> other bushings?
> 
> Fellows, does the R390 have a bushing around the
> antenna trim?
> Any other questions on bushings that need
> consideration?
> 
> Roger 
>
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