Hard to turn pots

[Charles W. Morehouse]

Rob,
Have had that problem many times with my restorations.  Use a drop of 
light oil, I use automatic transmission fluid to free up the shaft.
Put a drop on the shaft bushing and gently work it in.  It will free up 
and work fine.  No replacement necessary.  73.
Wayne,
W4GBW,

Robert Myers wrote:

>I have some old Heathkit gear and a few of the pots are almost rock solid.
>They will hardly turn.   I have sprayed some 5% CAIG Labs Moving Contact
>Lubricant ("Cailube" for carbon based controls) in all of them and it
>doesn't make a difference.  I don't know how they got that way.  They were
>like that when I bought the gear.  Could that be caused by the original
>assembler over tightening the nut on the front panel?
>
> 
>
>I removed one completely, and I could barely turn it using a wrench around
>the shaft and holding the pot body with my hand.  Obviously, that one has to
>be replaced (and probably some others), but there are some others that are
>stiff but not quite that bad.  Does it make any sense to add a drop of
>Teflon lubricant , or light oil, to the steel shaft just where it comes out
>of the front of the threaded bushing, or does that potentially get back into
>the carbon of the pot?
>
> 
>
>Thanks,
>
>--- Rob VE3JQL
>
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