CUMMINS N14 - Lubricating Oil Pressure - High

Lubricating Oil Pressure - High
Cause Corrections
----------
Oil Pressure Switch/Gauge/Sensor
Malfunctioning or Incorrect Location
OK
f
Check oil pressure switch/gauge/sensor
operation and location. Refer to Procedure
2-21.
----------
Engine Coolant Temperature Too Low
OK
f
Refer to ‘‘Coolant Temperature Below
Normal’’ Symptom Chart.
----------
Oil Does Not Meet Specifications (Oil
Viscosity Too High)
OK
f
Change the oil and check oil specifica-
tions. Refer to N14 Operation and Mainte-
nance Manual, Bulletin No. 3666024.
----------
Install CompuchekT, if Available
OK
f
Perform lubricating system test. Refer to
CompuchekT Test Procedures Manual,
Bulletin No. 3810485.
----------
Oil Pressure Regulator Malfunctioning
OK
f
Check oil pressure regulator assembly.
Refer to Procedure 2-15.
----------
Viscosity Sensor Defective
OK
f
Clean or replace viscosity sensor. Refer
to Procedure 2-18.
----------
Filter Bypass Valve Malfunctioning
Check bypass valve operation. Refer to
Procedure 2-19.
SectionT-Troubleshooting Troubleshooting Symptoms Charts
N14 Page T-87