How to disassemble free hub shell? I need to replace the free hub shell that is on my wheel with one that will work with an 11-speed Dura-Ace cassette.  The current one is for Campagnolo.

I don't want to take the whole wheel apart, I only want to remove the part that the cassette goes into.


I took the bolt out.


And I took the bearings out.


Now what?
On the hub side of the freehub, there should be a Allen headed bolt that you need to unscrew.  Some are 8mm, others are 10mm and some are 11mm.  11mm is a hard to find Allen wrench, so hopefully it's 8 or 10mm.
Put the Allen wrench into the center the freehub and unscrew in the normal direction (CCW).