-remove brake calipers, rotors, axle shafts, and front driveshaft
-pull cover and drain fluid, pull carrier and note orientation of caps(i check the pattern for pinion depth before removal). each cap will have a letter on it that matches up with letter on face of diff.
-check pinion preload. this will tell condition of pinion bearings, if it's way out of spec go ahead and replace the bearings(that's another story).
-remove pinion nut, yoke, seal, and crush sleeve
-install new crush sleeve, new seal, yoke, and new nut. torque until there is no more endplay. you will need a 3"+ breaker bar and yoke holder as rqukrawler mentioned. slowly torque nut until proper preload is achieved, IF you go over repeat assembly with new crush sleeve.
-reinstall carrier and check again for proper depth if so desired
-install cover, shafts, rotors, driveshaft, and calipers
eventhough it "shouldn't" change pinion depth and backlash, i still check anyway.
2004 Wrangler X
2001 Grand Cherokee Ltd.
1997 Grand Cherokee Ltd.