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

Sun Aug 10 07:42:42 EDT 2014

I have fought this battle and won, but don't get in a hurry. Go guy a can of 
Kroil!
It’s the magic stuff, turn the radio up so that the shaft is pointing 
straight up and
spray a 'small' amount around the shaft. You will actually be able to see it
creep in around the shaft and disappear. Do this a few time and then just 
let it
sit. After 24 hours "gently" try to move the shaft with plier.
We have a saying on the railroad, if it will wink it will screw! Now what 
that means
is this, if you can get it to move even a smidgen, put some more oil on it 
and wait
a day and try again, it will move a little more every day until it comes 
loose. We use
use this method on rusted bolts and screws.
Or you can go at it like a bull in a china cabinet and put vice grips on it 
and
destroy your control

73 and God bless

w5sum

-----Original Message----- 
From: Bob via Heathkit
Sent: Sunday, August 10, 2014 4:08 AM
To: heathkit at yahoogroups.com ; heath at puck.nether.net ; 
heathkit at mailman.qth.net
Cc: rsmyers at rogers.com
Subject: Re: [Heathkit] [Heathkit:Yahoo] Pot shaft stuck 'rock solid'

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

__._,_.___

____________________________________
Posted by: "Robert Myers" <rsmyers at rogers.com>
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