CUMMINS N14 - Cooling System General Information; Functions of Cooling System

Cooling System General Information
Functions of Cooling System
The functions of the cooling system are to:
• Absorb heat from the engine components
• Circulate the coolant in the engine
• Dissipate the heat through the radiator
• Control coolant temperature by the thermostat
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 Diagram.
Conventionally cooled engines with automatic transmis-
sions, typically use oil-to-water transmission torque con-
verter coolers plumbed between the radiator and the
engine water pump.
A torque converter cooling system with a remote bypass
allows the torque converter to receive coolant flow when
the thermostat is closed (engine cold).
The following publications, available through Cummins
Distributors or Cummins Dealers, provide cooling system
installation recommendations and specifications ap-
proved by Cummins Engine Company, Inc.:
• Automotive Installation Recommendations (Cooling
System), Bulletin No. 3382413.
• Construction, Mining, Logging, and Agriculture In-
stallation Recommendations (Cooling System), Bul-
letin No. 3382171.
• Data Sheets for specific engine models.
• Operation of Diesel Engines in Cold climates, Bul-
letin No. 3379009.
• Heavy Duty Coolant/SCA Maintenance Require-
ments, Bulletin No. 3387910.
Section 1 - Cooling System Cooling System General Information
N14 Page 1-3