Tackles this last month... Changed my front diff fluid, had been making noise.. Well, it looked like antiseize pouring out.. So I watched a few videos online, ordered my bearing kit for front diff ($160) not bad. Had to get adjuster lock tab at dealer ($5).. The I went to autozone and looted their free tool catalog.. Torque wrenches, bearing pullers, bearing/seal sets, ect... Grab some RtV while your there.. Anyway, getting the diff out was a little pain but once out it only took a few hours to get everything tore down and reassembled.. Borrow a dial indicator to measure back lash and didn't use any special wrench to adjust preload, just carefully used a punch and mallet to rotate the adjusters, they have teeth on them you can tap against to rotate it.. I'm not sure what the backlash was but I believe I set it about 6-7 thousandths.. At the yoke.. And I didn't change the yoke bearing or crush sleeve. I felt they were fine and didn't want to tackle that because I didn't have a big enough impact wrench on hand.. So, it's doable, takes a day, but to change out that adjuster I'm pretty sure you gotta drop out the diff...