M11 Series – Service Manual – 008-999   Cooling System – Overview

The primary function of the cooling system is to remove the heat created by the engine and its support components. The excess heat energy that is not removed by the cooling system is carried away by exhaust gases and radiation into the atmosphere.

The coolant must be made up of proper proportions of water, antifreeze and supplemental coolant additives (SCA) to properly perform these functions.

The accompanying chart illustrates the coolant flow through the engine. For more detail, refer to the coolant flow diagrams.

• Charge Air Cooled Engines

• Aftercooled Engines

The following publications, available through a Cummins® Authorized Repair Location, provide cooling system installation recommendations and specifications approved by Cummins Inc.:

• Data sheets for specific engine models.