Steve -
Be sure and inspect that shaft before you put the knob on again. Twisting one off like that will
often leave a spiral groove with raised edges on the shaft. Burnish it down until smooth with fine
sandpaper or steel wool.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Steve Wedge wrote:
We have a winner!
I could not get that screw to back out with PB Blaster, WD40, heat from the hair dryer, or freeze
spray. I noticed the knob wasn't on overly tight (a good thing this time). I wiggled it and it
loosened up a little, then held (gently) the shaft inside the frame (just inside of the ball
bearings) with a stout needle-nosed pliers and turned whilst pulling. It came off!
The screw was stripped in the CCW direction. I hit it with a little more PB Blaster, then
heat-soaked it in a 250* oven for half an hour. Still no CCW, so turned it CW until it wouldn't
go any further (the screw was so long, it hit the other side of the hole! With a little more PB, I
coaxed it back in and got it out finally. Had some more setscrews in my hardware cabinet, so I'm
all set with this one!
Thanks to all for the suggestions. I was lucky to be able to twist the knob off so that I could
turn the screw further in.
73,
Steve Wedge, W1ES/4
"I can't complain, but sometimes I still do."
- Joe Walsh
If the above message appears, it came from Steve's Son of Laptop!
----- Original Message -----
*From:* Chuck Grandgent <mailto:ch...@chuckg.com>
*To:* Steve Wedge <mailto:w1es1...@earthlink.net>
*Sent:* Tuesday, September 06, 2011 9:22 PM
*Subject:* Re: [Drakelist] Stuck screw in PTO knob.
Hi Steve,
WD-40 is not really a lubricant, it is a "water dispersal" (hence the "WD"
in the name)
mixture, though it has some lubricant properties. I have made that mistake
myself, for
example trying to use it to lubricate the hinges on the doors in the house,
where 3-in-1 oil
was clearly the better choice.
I dunno what would be the recommended thing for your predicament, but I'm
sure folk will chime in.
For loosening up stuff on the 1950's tractors I got, "PB Blaster" is the
chosen stuff, though
it might be totally inappropriate here. Actually, another thing does come
to mind... I
rotate my own truck tires, and when the shop tightened them too much,
Marvel Mystery Oil
really did the trick, let it sit a few hours.
Good luck,
Chuck, K1OM
On Tue, Sep 6, 2011 at 9:06 PM, Steve Wedge <w1es1...@earthlink.net
<mailto:w1es1...@earthlink.net>> wrote:
I've put a couple of drops of WD-40 down the hole after bending one
screwdriver trying to
get the setscrew backed out.
Has anyone used anything else to free a stuck screw? I'm now wondering
if the WD-40 might
not swell the plastic, exacerbating the problem...
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