One problem related to steering gear box shaft pitman has been reported for the 1999 Ford F-250. The most recently reported issues are listed below.
Vehicle was backing out of a driveway and the steering wheel snapped. The pitman arm disengaged, causing the vehicle to lose steering power. Owner called the dealer for the part, but the dealership did not have the part. Pitman arm was replaced. Consumer adds all 4 ball joints need to be replaced.