[Heathkit] [Heathkit:Yahoo] Pot shaft stuck 'rock solid'

[Gary Pewitt]

A fifty/fifty mix of acetone and ATF is the best, and cheapest, 
penetrating fluid there is.  Works at -least- ten times better than any 
penetrating oil on the market bar none.



On 08/10/2014 04:08 AM, Bob via Heathkit wrote:
> Hi Rob
>
> A very thin penetrating oil or even parafin and some patience should work
> but may take a while. The pot on my SB610 does have a small amount of
> sideways  as well as back and forward play in the rotatable shaft so there should
> be room  for the oil to wick into the gap.
>
> If you can get the control out of the 610 then try suspending the shaft end
>   in penetrating oil or soak a piece of tissue in the oil and wrap it around
> the  control shaft and leave for a while. Give it a twist now and then and
> it should  eventually clear.
>
> The problem will be more difficult if the blockage is caused by corrosion
> instead of old dried grease.
>
> 73
>
> Bob
>
> Bob F Burns G3OOU
> C  Eng, FIET, MSE
> G-QRP 6907
> Crystal Palace Radio & Electronics Club:  www.g3oou.co.uk
> Technical web site: _www.qsl.net/g3oou_ (http://www.qsl.net/g3oou)
> @BobFBurns on Twitter:  http://twitter.com/BobFBurns
>
>
> In a message dated 10/08/2014 07:07:00 GMT Standard Time,
> heathkit at yahoogroups.com writes:
>
>
>
>
> I have a pot whose shaft got stuck 'rock solid' somehow after a few years
> of
> non use - but at one time it worked smoothly (it's the ON/OFF switch +  pot
> on my SB-610).
>
> Are there any standard solutions for  this?
>
> Thanks,
> -- Rob Myers, VE3JQL
>
>
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