Vehicle category: tow trucks equipped with century formula 1 hydraulic wheellift units.system: other hydraulic equipment.consequences of defect: a hairline fracture of the rod could develop and resultin a fatigue fracture causing the rod to break without prior warning. If thebreak occurred while a vehicle was in tow the vehicle could be dropped,resulting in an accident.note: in the interim, the wheel lift should not be used on a towed vehiclewithout safety chains.