Vehicle description: heavy trucks; cab over engine models equipped withcaterpillar 3208 diesel engines.system: engine and engine cooling; engine cooling fan.consequences of defect: portions of the blades may be thrown from a rotatingfan, possibly damaging surrounding vehicle components and creating risk ofinjury to persons in the area, if the cab IS tilted forward.note: impending failure IS usually accompanied by noise or vibration. Noservice should be performed on suspect vehicles with the cab tilted forward andthe engine running until the recall service IS completed.