You may have some luck finding axle information within a few of the �Stock 3A Projects� threads.
I did some work on my front axle, but this is by no means a comprehensive instruction. There is some spider gear, king pin and knuckle seal information. Look about half way down this page to see the start of my axle stuff�
http://www.cj3apage.com/cgi-bin/3Ayabb26/YaBB.pl?num=1364925701/60This is a very greasy oily job. It was hard to take lots of photos.
Some things to consider�
Inner seals. I did not replace mine, but after inspection, you may need to. These are in the axle tube right up against the bearings on the carrier in the pumpkin. The only way to inspect and replace is to pull the carrier. Not a bad job, but pay attention to the bearing cap orientation. It�s important that they go back on the same way they came off.
Pulling the carrier. This is pressed in pretty tight. After the axles shafts are pulled out, I used a couple pry bars to get the carrier out.
King pin bearings and shims. Pretty easy to mess with too. They are often neglected. You will see how bad mine were. Appropriate shimming of the king pin bearings is an important step. Also note: There are two different axle designs during 3A production. Early axles required shims on the top and bottom king pin to knuckle housing surfaces. Later axles require shims only on the top. Existing shim placement may not tell the whole story. These are often missing or set in the wrong locations.
Pinion and Ring gear mesh. I didn�t need to adjust the backlash on mine, but you may want to check this. You can use some white grease or there are specific products out there for this. Put it on the pinion gear, then turn the ring gear. You will see how the two gears mesh. You are looking for a specific pattern to appear on the ring gear. You will find this information by using keywords�Willys and Backlash.
Hope this at least gets you started.