[R-390] kilocycle/megacycle movement

[Scott Seickel]

> sure the band wasn't dead).  After awhile I noticed that the megacycle
> knob seemed to move off its "lock" position and was moving as I tuned
> the kilocycle knob.  It did this sometimes and would get off the band

The MHZ knob should have a good solid click as it falls into each
detent.  I have seen the detent plate get worn out from lack of lub
and the knob just doesn't have a good lock at each position.
But the problem probably is in the differential gear assembly.  The gears
could  just be sticking and need a cleaning and lube.  No need to 
disassemble the differential.  Just soak the whole thing in gas for an
hour or two to clean off the crud. Relube with Mobil 1 synthetic oil.
 If this is the problem, you might as well rebuild the whole geartrain 
while you are at it because there are other gears that are crudded also.

Scott



 position but not always.  Is this most likely a lubrication problem?  I
> really never was able to pick up a known signal at around 3.99 Mhz and
> I  tried rocking the megacycle knob to improve things,  or to find if
> something else was "hanging up".  I haven't lubed the set since about 2
> years ago when I did a pretty thorough job in this regard and everything
> seemed very free.  I'll pull it open tomorrow and take a look but was
> curious if there was an obvious known component that causes this kind of
> symptom. It seemed ok on other bands but I didn't spend a lot of time
> checking.   thanks,  Dan.
> 
> 
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