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DESCRIPTION AND OPERATION COOLING SYSTEM DESCRIPTION The cooling system consists of: • Mechanical Cooling Fan • Thermal viscous fan drive-Low disengaged • Fan shroud • Radiator pressure cap • Thermostat • Coolant reserve/overflow system • Transmission oil cooler (if equipped with an automatic transmission) • Coolant • Water pump • Hoses and hose clamps • Accessory drive belt OPERATION The cooling system regulates engine operating tem- perature. It allows the engine to reach normal oper- The cooling system also provides a means of heat- ing the passenger compartment and cooling the auto- Vehicles equipped with the 4.7L engine receive a “max” cooling package which consists of a heavy duty SYSTEM COOLANT ROUTING DESCRIPTION For cooling system routings refer to (Fig. 2) (Fig. 3). Fig. 1 Cooling Module with Electric Fan— 4.0L and 4.7L 1 – RADIATOR Fig. 2 Engine Cooling System—4.0L Engine— Typical 1 – HEATER CORE 7 - 2 COOLING SYSTEM WJ |