Workshop Manual

EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE

30.1 DESCRIPTION AND OPERATION OF COOLANT THERMOSTAT

The coolant thermostat is located on the left side of the engine on the oil coolant module. The

coolant thermostat regulates the coolant inlet temperature in a range from 87°C (188° F) to

95°C (203°F).

1. Oil Coolant Module 3. Thermostat

2. Sea l

Figure 30-1 Thermostat and Related Parts

The coolant thermostat regulates coolant ﬂow from the engine to the radiator. The thermostat

regulates coolant ﬂow to control the temperature of the coolant within the coolant circuit.

The following beneﬁts result from regulating the coolant at the inlet t emperature of the engine:

□ Reduced thermal cycling of the engine

□ Operating temperature is reached faster

□ Emissions are reduced

□ Improved vehicle heating

All information subject to change without notice.