I'm about to buy an 8.25 from a guy, but the yoke is missing. I'm getting mixed results from some sites. Some say that I would just bolt a new one on, and some say I have to deal with preload (whatever that is). I found this write up online, its for replacing the seal, but obviously they remove the yoke, so is that all there is needed to be done? Also what is a crush sleeve? Thanks

http://www.jeepingsingles.net/tech/pinionseal.asp