I have not had to do this myself so this is just second-hand info.
To get to the clockspring you must disconnect the battery for a while to prevent airbag actuation. The airbag must be removed so that the steering wheel can be removed. The steering wheel should be marked fo accurate re-installation. The clockspring is under the steering wheel. It is a plastic (usually black) ring. There are many clockspring part numbers so contact a Ford parts department for the proper one.
Apparently the clockspring connector may lose contact as well as damage to the unit from un-centered operation.
