CUMMINS N14 - Air Compressor Pumping Excess Lubricating Oil Into Air System

Air Compressor Pumping Excess Lubricating Oil Into Air System
Cause Corrections
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Intake Air Restriction to Air Compressor
Excessive (Naturally Aspirated Air
Compressor Only)
OK
f
Replace air compressor air cleaner (if
installed). Check engine intake restriction if
air compressor inlet is installed in intake
piping between air cleaner and turbocharger.
Refer to Procedure 3-04.
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Air Compressor Pumping Time Excessive
OK
f
Check the air governor. Refer to Procedure
4-05. Check air compressor duty cycle. Refer
to Installation Recommendations - Com-
pressed Air Systems, Bulletin No. 3382886.
----------
Engine Power Angle or Angularity
During Operation Exceeds
Specification
OK
f
Refer to engine specification data sheet.
Install external drain from air compressor
sump to oil pan.
----------
Oil Drain Restricted
OK
f
External oil drain blocked. Repair/
replace as necessary.
----------
‘‘E’’ Type Unloader Valve Improperly
Plumbed
OK
f
Install isolator Econ valve, check valve,
and proper hoses. Refer to General
Information, Section 4.
----------
Air Compressor Excessively Worn or
Damaged Internally
Replace air compressor. Refer to
Procedure 4-07.
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-6