Welcome Chev4t6 I'm not sure what you are trying to do but the column and box come out of the truck in one piece. You have to take off the pitman arm and unbolt the box from the frame and remove the whole unit out the cab. If you already have it out and are rebuilding it I'm not much help there. but I think the inner column will not seperate from the box.

If you check the maintenance manual there is a pretty good rebuild discription there.

Good Luck
George