VEHICLE WAS TRAVELING AT 15 MPH AND LOST CONTROL DUE TO A CODDER PIN SNAPPING IN HALF CAUSING THE RIGHT FRONT WHEEL TO COME ENTIRELY OFF OF THE VEHICLE. THE DISK BRAKE STAYED CONNECTED TO THE RIM AND WAS ALSO REMOVED ENTIRELY FROM THE VEHICLE CAUSING THE BRAKE LINES TO BE SEVERED WHICH CAUSED NO PRESSURE. WITH NO PRESSURE IN THE BRAKE LINES I WAS NOT ABLE TO STOP THE OTHER WHEELS BUT WAS FORCED TO LET THE VEHICLE COME TO A SKIDDING STOP, WHICH HAPPENED BY HITTING A TREE. THE VEHICLE WAS TAKEN TO A LOCAL FORD DEALERSHIP WHERE A YEAR PRIOR THEY HAD WORKED ON THE SAME WHEEL TO PACK THE BEARINGS AND DO OTHER SMALL MAINTENANCE. BOTH THE DEALERSHIP AND FORD CLAIMED NO RESPONSIBILITY FOR THE ACCIDENT, WHICH SEEMS STRANGE SINCE A VEHICLES WHEEL SHOULD REMAIN ON WHEN GOING 15 MPH.