My first step was buying the rebuild kit. It has all seals, O rings, snap rings, and bearings for a rebuild. I had to get the body off the Jeep to find out what rebuild kit I needed because there are two; one for a 13/16" or 3/4 " input shaft. Mine was the 13/16" shaft.
Getting the gear box off was a real PITA. I would suggest spraying the bolts for a few days before trying to remove them. There are 3 on the underside of the frame holding the bracket on, and 2 of those broke off at the head. I'm spraying those still and hoping doing that alot and some heat will get the bolt shafts out. The others came out pretty easy, but were hard to get to.
The HARDEST part of this was the pittman arm. I tried a pittman arm rental tool, and the biggest of those was to small. I tried a three arm 5 ton puller, and it had no effect. I put it on and turned it until I couldn't turn it anymore, and then heated the arm up until it was white; didn't work. I then used this-
I had posted a question on another thread about using one of these, but didn't read the reply until to late. I used the fork and a BFH, and after a couple hits, it popped off.
I probably won't know if I damaged the main shaft until I get it back together. I know I damaged the gear body, and will show that in a few pics. Just FYI, the suggestion was to NOT EVER USE THE PITTMAN FORK FOR REMOVAL, since it could do damage to the shaft; thanks for the suggestion CSP.