Anyone know how to get a Chuck off that that's been permanently super glued?

Better than 15 years ago, I got a Milwaukee 5381 Hammer Drill. Right when they first came out with it along with the 5387. I went for the single speed 5381 over the two speed/dual impact 5387, cause I favor simplicity. But the Rohm Chuck was not a favorite of mine. When I opened the box. I was expecting a Jacobs, same as the Magnum Hole Shooters I got. In spite of disappointment, I really love this hammer drill. I got others. I got SDS. But I always grab this Milwaukee.
And then some years back the cord cracked right by the boot. I noticed in the schematics the combination part; Housing w/ Back Handle, is the same as the 5387, which has a Quik-Lok cord. Well, I had some spare Quik-Lok cords, so I got this little part for the 5387 and converted my 5381 to a Quik-Lok. I have mixed feelings about Quik-Lok cords and I won't argue with anyone that says bad things about Quik-Lok cords. Cause I'm one of em too. But for this situation I like it.

Anyway, I also ordered the 5387's chuck same time. Another Rohm, but a better one.When I went to get the Chuck Retaining Screw out, I could not. I realized it had Loctite on the threads. Not the good kind either. I ended up drilling down into that screw. Way in there till the bit seized up and the screw, being reverse threaded, kicked loose and come on out.
I soon learned that the Chuck had the same factory installed Red Loctite or maybe they just used the mother ingredient; CyanoAcrylate.
I tried forever getting that chuck off. Finally I gave up and put a new Retaining Screw in there. Funny, no Loctite at all and it never come loose.

Still, all that effort to get the chuck off had a bad effect on it. I kept using WD-40, Silicone and Grease. And she got better. But now, it lets go too often. I have to keep re-tightening. I got the new chuck ready and waiting. I think if there is a way to get it off, aside from the suggested method, someone here would be best chance for help. 

Insert key in chuck, tap sharply with hammer near end of key, in the right direction, and hope.

See if there is a way to apply heat without damaging the drill itself.  Propane torch would be quickest, but an electric heat gun may work.  Red loctite is tough but will soften in presence of heat.
Al

Get one of those L-shaped Allen wrenches, say 3/8".  Install the short leg in the chuck and tighten.  Beat on the long leg with a suitable hammer, in the direction that will cause the chuck to unscrew.  Sharp blows are best; you want to overcome the tightness of the chuck on the spindle before the gear train notices you're doing it.

It will likely help to have the drill body resting on the workbench when you do this, rather than held in your hand; holding it in your hand will cause your body to absorb some of the shock.

Similar to what Bill said, find a 3/8 or so Allen key, and cut off the L end. Put the shank in the drill chuck, and use the appropriate size 6 point socket in an impact gun, or a drill with a clutch . Start at a low setting and work your way up, and I usually give a little bump both in forward and reverse!

I am sticking these suggestions in my file. 

Thanks fellas. I'm working on it. Already developing into a good story. Hoping like Hell  it doesn't come to this:     
https://www.youtube.com/watch?v=9-nbYu1j9xI   

https://www.youtube.com/watch?v=mFK5IkwZY18

The bone head in the first video had the chuck jaws tightened down on the hex key, so no way was the screw going to turn. At least he knew that the retaining screw on reversable drills is left hand thread. To the best of my knowledge, all the chucks thread on right hand.
Joe B

i recycle stuff on the regular at our Restore and have found that a bit of propane torch on superglue will cause it to give up to my persuasion.

JoeCB,
You're sure right about that. There's another video with this dude with a more recent model Milwaukee Hammerdrill. He started off with Right or Left issues as well, with that Retaining Screw. Then he couldn't get that screw out. So he came up with slipping an open end wrench behind the chuck. Partway was all it could go. Then he hammered on the other  end. His logic was that by jumping the Chuck ahead of the Spindle threads, it would force the Retaining Screw to do the same. The screw threads would shear loose from the threads inside the spindle. He figures the spindle's inside  threads are harder than the screw's. He got it out. Sort of leaving the more obvious problem without comment.
I'm still working on this Chuck removal. I was waiting for advice to roll in. Then I popped my right shoulder out of joint.

Well, I appreciate the suggestions. I tried em all. Heating seemed worth trying, yet there ain't one thing about that on YouTube. But when enough of you suggested it; particularly the one about recycling tools, I figured any port in a storm. I used an angle grinder with a cutting disc to cut apart the Chuck. I  figured the smaller the target, the faster it would heat up and lessen the heat transfer back up the spindle. As you can see from the darkened condition of what's left of this chuck, I set the torch on that thing. The cuts in it are both sides and they don't go all the way to the threads. Cutting them would more than likely end things seeing as the spindle is discontinued. Right now, things are just as you see in this last picture. A friend and me, working  together were unable to get it off, even after putting the torch to it.
I haven't given up.

Arc welding.  You will need a place for the ground clamp.  With the ground clamped on the chuck stub, weld a bolt to the chuck, then use that as a ground for the clamp.  Then weld the chuck til it is hot enough to melt the loctite.  Possibly use the welded bolt to turn the chuck off.

I finally got it off. As long as the Spindle could rotate, nothing would work. I ended things by jamming the Spindle Gear with a large Slotted Screwdriver. I did that while my friend took a pipe wrench to that thing. And finally it came off. You can see a Bearing Separator still on the Spindle. Figured it might give a shove from behind. The Spindle threads look perfect after all that. New Chuck is on.

Congrats!  Must be a big relief to succed and to have saved the drill.