[TowerTalk] HyGain HDR300 removal stalled due to stuck setscrew

[Ron WV4P]

1/4" (Milwaukee) cordless impact set on LOW..  New Allen socket, get comfy
and let it Hammer for a few min. Or more.  The vibration builds heat and
breaks it loose.. increase power to next level after a few min, but don't
get in a hurry.
Also be prepared with Metric Allen and Torx bits that may fit with a little
convincing should the hole loosen up.
I have removed Hundreds in this manner, patience is the key. Ron, WV4P

On Wed, Aug 28, 2019, 11:14 PM <al.n6ta at gmail.com> wrote:

> I need to remove my old HyGain HDR300 rotator from the Rohn 45 shelf.  I
> bought something new.  Stuck hardware is keeping me from getting it down.
> I
> may need to drill out a setscrew.  If you are interested, read on.
>
>
>
> The rotor shaft is attached to the 'platform' to which the mast clamps
> mount.  The rotator cannot be taken from the tower if the platform cannot
> be
> removed to allow the motor's shaft to drop back through the shelf hole.
> The
> motor mounts below the shelf and the platform above the shelf.  The mast is
> not putting any weight on the platform/shaft now.  The clamps are sloppy
> loose and will come off.  Not the platform.
>
>
>
> The platform is held to the shaft with a key and a setscrew  The setscrew
> is
> orthogonal to the shaft.  It is a 1/4x20 screw that should take a 1/8' hex
> key.  The screw looks like stainless since it is shiny.  I have sprayed it
> with WD40 and that did not help.  I sprayed it good with BP Blaster and let
> it sit a few minutes while up the tower.  Still not loose.  Now, the hex
> key
> seems to be 'rolling' its edges.  'Slipping' in the setscrew hex hole.  I'd
> like to think if I get a new Allen wrench of high quality, it will work.  I
> will try. But no way to know if the screw is also compromised and no longer
> having a good hex hole.  Looking at it from 6" away without the 'good
> glasses'.
>
>
>
> So, if I had to drill out this screw or take some unusual measures, does
> anyone know how to do it?  Like, start with what size drill and move to
> what
> next size, etc.  Drill inside the hole in the screw or start bigger and
> outside the hex hole.  Or, grab the platform with a come along and try to
> pull it off?  I will be doing this from above and prefer to know what I am
> doing before fumbling more than I have already.  I doubt I can remove the
> shelf with rotator/platform attached due to its size.  I have not tried
> that
> yet.
>
>
>
> Anybody out there that has had to deal with a similar problem?
>
>
>
> It's always the easy things that curse at me when I start the job..
>
>
>
> TNX de Al-N6TA
>
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