CUMMINS N14 - Coolant Temperature Above Normal - Gradual Overheat (Continued)

Coolant Temperature Above Normal - Gradual Overheat (Continued)
Cause Corrections
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* Thermostat Incorrect or Malfunctioning
OK
f
Check thermostat. Refer to Procedure 1-32.
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* Radiator Shutters Are Not Opening
Completely. Shutterstat Setting Wrong
OK
f
Inspect the shutters. Repair or replace if
necessary. Check shutterstat setting. Refer
to Procedure 1-17.
----------
Fan Drive and/or Controls Malfunctioning
OK
f
Check fan drive and controls. Refer to
Procedure 1-22.
----------
* Air or Combustion Gases in the
Cooling System
OK
f
Check for air or combustion gases in
the cooling system. Refer to Procedure
1-10.
----------
* Water Pump Malfunctioning
OK
f
Check water pump with CompuchekT
Diagnostic Test. Replace the water pump.
Refer to Procedure 1-27.
----------
* Radiator Core (Internal) Obstructed or
Damaged. Check Valve or J-Tube
Malfunctioning
OK
f
Inspect radiator. Clean if necessary.
Refer to Procedure 1-16.
(Continued)
* If CompuchekT was used, this cause has already been tested.
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-16