I swapped out the hubs on my '98 with WARN manual hubs a couple of years ago, and didn't have any issues that couldn't be solved with a rubber mallet. I saw this yesterday and was going to go home last night an review the instructions to see if I could figure out what you meant by "cam housing" but brain locked. I'll try again tonight.

If you are talking about the entire hub, once the bolts are out, just wacking it with the mallet worked it free. There was a good bit of rust in there so the wacks were pretty forceful. <img src="/forums/images/graemlins/kewl.gif" alt="" />