Wheel bearing heating up and seizing up? My guess is that something is heating up and not turning freely. (Like a brake). Doubt it'd be anything transfer case or tranny related. You would know if it was. Next time maybe try driving it for the half hour until the symptoms surface. Then jack up each of the tires and give em a spin. You will see the problem real quick.
89 YJ.. My first jeep and I won't let it go. ▀||||▀
Current Project: None... I disgust myself.
[URL="http://www.jeepforum.com/forum/f22/my-yj-build-adventures-thread-1356941/"][SIZE="3"][B]BUILDING THE YJ MY WAY[/B][/SIZE][/URL]