Gas Engine

Fig 1: COOLING SYSTEM FLOW

Courtesy of CHRYSLER LLC

1 - WATER PUMP	7 - COMBINATION COOLER
2 - RETURN TUBE	8 - RADIATOR
3 - WATER PLENUM	9 - SECONDARY THERMOSTAT
4 - PRIMARY THERMOSTAT	10 - CYLINDER BLOCK
5 - TRANSMISSION	11 - CYLINDER HEAD
6 - INTERNAL TRANSMISSION COOLER	12 - HEATER CORE

The cooling system regulates engine operating temperature. It allows the engine to reach normal operating temperature as quickly as possible, maintains normal operating temperature and prevents overheating.

The cooling system also provides a means of heating the passenger compartment. The cooling system is pressurized and uses a centrifugal water pump to circulate coolant throughout the system. Gas engines use a separate and remotely mounted, ambient pressure coolant recovery bottle using a pressure/vent cap. Diesel engine use a separate and remotely mounted, pressurized coolant tank using a pressure/vent cap.

The cooling system consists:

Radiator
Coolant
Electric Cooling Fans
Water pump
Dual Thermostats (Gas Engines)
Charge air cooler (Turbocharged vehicles only)
Hoses and clamps
Transmission oil cooler
Coolant pressure bottle/overflow system