Much to learn grasshoppa!

Welcome to Mud!

You're in good company!
The ADD system just has a drive flange, no real "locking hub" to speak of. Repacking the wheel bearings is pretty straight forward, pull the tire, take... Never mind, there's a 93 FSM linked in the FAQ thread... It'll tell you all you need to know. To get the inner bearing out of the "hub" (that's the whole spinning assembly up there) you'll have to pull the grease seal (and probably mess it up) so you'll need a new set of inner seals. Check the FAQ thread, I can't remember if there's a good link in there or not... If there's no link, take some pics and do a write up for us!

Hehe