VEHICLE WAS INVOLVED IN A ACCIDENT THAT DID DAMAGE TO THE RIGHT FRONT WHEEL AREA. THE RIGHT FRONT WHEEL HIT A CEMENT CULVERT CAUSING DAMAGE TO THE HUB AND AXLE HOUSING. DURING OR BEFORE (UNKNOWN) THE ACCIDENT THE STEERING BOX OUTPUT (PITMAN) SHAFT BROKE. WE HAVE SEVERAL OF THESE TYPES OF TRUCKS AND ONE OTHER F350 THAT WHILE DRIVING IN A STORM THE WHEEL HIT A RUT IN THE ROAD AND THE PITMAN SHAFT BROKE CAUSING THE TRUCK TO GO UP AN EMBANKMENT AND ROLL OVER.