Cooling System Specifications: Description

The cooling system is pressurized and uses a centrifugal water pump to circulate coolant throughout the cooling system. An optional factory installed heavy duty cooling package is available on most models. The heavy duty cooling package generally consists of a radiator that has an increased number of cooling fins and 2 rows of cooling tubes instead of one. An auxiliary electric cooling fan is also used on Cherokee, Comanche and Wagoneer models equipped with a 4.0L engine, heavy duty cooling and/or air conditioning.

Engines with a serpentine accessory drive belt have a reverse (counterclockwise) rotating water pump. Water Pump is identified by "REV" stamped on front of water pump body and "R" stamped into the back of water pump impeller. Engines with standard "V" belt, have a forward rotating water pump.