CUMMINS N14 - Lubricating Oil Pressure - Low (Continued)

Lubricating Oil Pressure - Low (Continued)
Cause Corrections
----------
Viscosity Sensor Plugged or Defective
OK
f
Clean or replace viscosity sensor. Refer
to Procedure 2-18.
----------
Install CompuchekT, if Available
OK
f
Perform lubricating system test. Refer to
CompuchekT Test Procedures Manual,
Bulletin No. 3810485.
----------
Perform Lubricating Oil System
Diagnostic Procedure
OK
f
Refer to Procedure 2-01.
----------
Oil Transfer or Suction Tube Loose or
Broken, Gasket Leaking
OK
f
Remove and inspect oil pan. Refer to
Procedure 2-12.
----------
Oil Cooler Plugged
OK
f
Check/replace oil cooler. Refer to
Procedure 2-19.
----------
Oil Pressure Regulator Malfunctioning
OK
f
Check oil pressure regulator assembly.
Refer to Procedure 2-15.
----------
Lubricating Oil Pump Malfunctioning
OK
f
Inspect lubricating oil pump. Refer to
Procedure 2-13.
----------
Internal Engine Wear or Damage or
Internal Oil Leak
Analyze the lubricating oil. Refer to Proce-
dure 2-02. Inspect the oil filter. Refer to
Procedure 2-02. Remove oil pan and check
for internal leaks. Check the main/rod
bearings, cam bushings, and rocker lever
bushings for excessive wear. Refer to
Procedures 7-23, 7-24 and 7-41.
SectionT-Troubleshooting Troubleshooting Symptoms Charts
N14 Page T-89