the "hardest" part will be squirting on a new gasket so it won't leak oil afterward. While you're pulling the cover off, pull the C-clip, push the fork and collar over to the engaged position, then reattach the C-slip to hold it engaged all the time. Then you'll never have to worry about it being engaged or not. :thumbsup:
And in case you're wondering, no, this won't affect your 4wd or 2wd manners except that 4wd will always be there when you pull the lever. :D all modern Jeeps come with a solid axle shaft on that side. The CAD was a mistake that never should have happened.
who's got a link to the thread with those pictures?