COOLING
DESCRIPTION
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. A separate and remotely mounted, pressurized coolant tank using a pressure/vent cap is used.
COOLING SYSTEM COMPONENTS
The cooling system consists of:
- Charge Air Cooler (Turbocharged vehicles only)
- 2 Speed Electric Cooling Fan
- 2 Speed Electric Cooling Fan with an engine driven fan with viscous clutch (Heavy Duty only)
- A aluminum-core radiator with plastic side tanks
- A separate pressurized coolant tank
- Combined coolant pressure bottle/overflow system with pressure cap plus an overflow system
- Radiator
- Water pump
- Combination A/C condenser/transmission oil cooler (automatic transmission)
- Thermostat
- Coolant
- Low coolant warning lamp
- Coolant temperature gauge
- Water pump
- Hoses and hose clamps
OPERATION
| Engine Cooling System 3.7L Engine |
| 1 - LH CYL. HEAD |
| 2 - AIR BLEED |
| 3 - THERMOSTAT LOCATION |
| 4 - RH CYL. HEAD |
| 5 - RH BANK CYL. BLOCK |
| 6 - LH BANK CYL. BLOCK |
| 7 - COOLANT TEMP. SENSOR |
The cooling system regulates engine operating temperature. It allows the engine to reach normal operating temperature as quickly as possible. It also 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.
SPECIAL TOOLS
| RELEASE TOOL 8875A |
| ADAPTER PINS 8346 |
| SPANNER WRENCH 6958 WITH 8346 ADAPTOR PINS |
| PRESSURE TESTER 7700A |
| COOLANT REFRACTOMETER 8286 |