A fan shroud assembly is used to direct the airflow provided by the cooling fan. A missing or damaged fan shroud will reduce the amount…

A malfunctioning fan drive can cause engine cooling problems. Various fan drive configurations are used to determine when the fan is driven, which include: •…

The engine cooling fan is typically driven by a crankshaft- driven belt. In some applications, the fan is located off the engine for a remote…

Collapsed or damaged coolant hoses can result in engine heating problems. Make sure to inspect all hoses for cracks, cuts, or collapsing. Replace any damaged…

Air forced through the fins of the radiator by a fan cools the coolant pumped through the radiator. Environmental debris (such as paper, straw, lint,…

A commonly overlooked item when troubleshooting the cooling system is the radiator pressure/expansion tank cap. The cooling system is designed to use a pressure cap…

A worn/incorrect belt, belt tensioner, or misaligned pulley can cause: • Belt slip • Belt jump or “walk off” • Noise • Belt breaks and…

A damaged or an incorrect water pump can lead to an engine overheat condition. To verify that the correct water pump is installed, reference the…

There are different temperature range thermostats available depending on the engine type and application. The part number and nominal operating temperature are stamped on the…

The following procedure covers common troubleshooting steps to help identify: • Engine overheat causes. See the Initial Check section of this procedure. NOTE: At the…