TurboedD16Y7

I was driving my Jeep home from a friends house n the driver side front tire started locking up. I thought I might have lost a brake pad or something so I took the tire off and the brakes were fine. Then I check my u joint on the axle n saw that it had a lot of play so I replaced it and it's still doing the same thing. I then took the cover off the front differential and there was absolutely no oil in there. It smelled like it got really hot. I checked out all the gears and they were all fine, put oil in, then tried driving again. Same thing. If anyone has any ideas on what I have not done yet that would be greatly appreciated!

TurboedD16Y7

I've also heard the transfer case drive chain will stretch n that has caused it to buckle up in there. Would that be something to replace?

belvedere

Probably a sticky caliper, or possibly the brake hose.

Nick-B

Is the wheel locking up when you use the brakes or just randomly as you drive?
If it is only when you press the brakes then it is a caliper or rubber hose as Belvedere suggested. Replace both calipers and hoses and flush in fresh brake fluid all around.
If I locks randomly, then you may have a bad axle bearing from the no oil problem. No oil in the diff is a problem in itself. Where did it go? Find the leak.