Quote Originally Posted by 85cj7 View Post
Be careful when tightening the yoke back down. Stock 9" use a crush sleeve to set pinion bearing preload. You can upgrade the crush sleeve to solid shims though. I would just change the seal/yoke and be done with it. If you change the bearings then the pre-load has to be re-adjusted. If you do go this route then go ahead and get rid of the crush sleeve for the solid shim.
Fair enough. How likely is it that anything behind the yoke and seal need attention? I already bought the pinion seal at oreillys, but I'm going to order this: http://broncograveyard.com/bronco/i-...ge-3-7-8-.html

to replace the 9" yoke. What size is the pinion nut? 1 1/8?

Also, FWIW.. I plan on draining and changing the diff fluid in the 9 inch. I'm not 100% clear on the procedure for this. From what I've learned, I have to pull the axle shafts and the carrier. Is this true?