I assume you are referring to the center link, tie rod ends, pitman are and idled arm. Remove the cotter pins (don't save them, get new ones); loosen all castle nuts on the above but leave them on loosely to keep items from falling; give a good solid rap on the side of each which should loosen the item (you may have to clean a spot on each part so the metal is exposed, and place a heavy object on the opposite side to concentrate the impact).
A "pickle fork" type tool is the last resort. DO NOT POUND THE EXPOSED STUD.
Get a copy of the appropriate Ford shop manual for your car. It has rebuild steps for the power steering control unit. It's not difficult.
Jim