[R-390] More issues removing wiring harness

[Barry]

Hi Grayson,

I don't know for sure, but some of the controls have a locking pin that is seated in a shallow hole in the back side of the front panel  Twisting too hard might break that pin.

As for getting them out, if you have a deep-well socket that will fit the threads from the front, that would be the safest way to tap on them to loosen them.  Tapping directly on the shaft is much more likely to cause damage.

Good luck with it!

Regards,
Barry - N4BUQ

----- Original Message -----
> From: "Grayson Evans" <wa4gvm at gmail.com>
> To: R-390 at mailman.qth.net
> Sent: Monday, September 8, 2014 11:16:19 AM
> Subject: [R-390] More issues removing wiring harness
> 
> I have got two very stuck, corroded front panel controls.  The AGC switch and
> the Limiter pot are frozen to the front panel.  I tried many applications of
> penetrating oil, WD40, and hitting the shaft from the front with a hammer as
> hard as I dare.
> Several other controls were corroded, but they came out.
> I tried turning with my hand from the back, no luck.
> Any way to avoid damaging them?
> 
> Grayson
> TA2ZGE - Ankara, Turkey
> KJ7UM
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