If you have lockout hubs, this is most likely your problem. One of your hubs could be hung up. You can check by putting the T case in FWD and jacking one front wheel. Turn the lifted wheel. If the lifted wheel turns, but the axle shaft doesn't. Your problem is in that wheel. If the shaft on the other side turns, the problem is in the oposite wheel. IF, the drive shaft to the transfer case turns, your not in FWD and the problem is in the T case. Hope this helps.
Monday, January 13th, 2020 AT 7:29 PM