Corpsman:
The two piece axle was used on many cars and Jeeps from the old days, and in fact was used on Jeeps all the way up until 1985 or so. (Both the Dana type axles from the 40's and 50's as well as the AMC 20 axle...used on all the later CJ-5's CJ-7's, gremlins, hornets, etc).
Of course the big nut must be removed, and then the hub/flange can be removed. You might be lucky and find that the flange is "loose" to some extent, and the hub might come right off with a light tap. It shouldn't be that loose, but I've experience that several times. If it's on there really tight (like they should be), you will need the "special" hub puller. It's a VERY large puller with 3 to 5 arms that attach to the lug studs. The puller shaft can accept a large lever that actually is meant to be smacked with a hammer. The shock of this action helps in popping the flange loose.
Parts stores used to stock these things, and some rented them for free. But there isn't much call for this type of tool anymore and probably hard to find. I couldn't fine one, so I bought one. I got one from Amazon. You can find them on ebay too. The one I got was a CAL VAN tool 94800. Good luck!
