I replaced a rotor last week and the cam assembly came out in one piece. However when I put it back on, I couldn't get the snap ring in the groove after I put the spindle washer on. I ended up putting the snap ring in the groove then put the spindle washer on. So I know its not in the right order. I ended up taking it to a shop and they couldn't do it either. Since I only driving in 2wd mode, I figured it will be ok...hopefully.
I'm wondering now if the cam assembly separated or widened somehow when I took it off. That sounds right now that I hear your problem. When I looked at the cam assembly, I didn't really pay any attention to what was inside, or the order of the washers in it, but I guess if you remove the spring it must come apart.?.
If no one else answers your question, I'll take it back apart and take the cam assembly apart to see if I can address both our problems.
By the way, have you tried taking your other wheel apart to look at that cam assembly?
Once you take the snap ring off, the cam assembly should slide right out in one piece for you to look at it. I don't know if you can see the washers or the order they are in by looking inside, without taking it apart, but that might be the easiest way for you to get your separated one back together.
I'll be very interested in hearing the replies to this thread.