CUMMINS N14 - Lubricating Oil Sludge in the Engine Crankcase Excessive

Lubricating Oil Sludge in the Engine Crankcase Excessive
Cause Corrections
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Bulk Oil Supply Contaminated
OK
f
Check bulk oil supply. Change engine oil
and filters. Replace oil with non-
contaminated supply.
----------
Oil Does Not Meet Specifications
OK
f
Change oil and filters. Refer to the N14
Operation and Maintenance Manual,
Bulletin No. 3666024 for the correct oil
specification.
----------
Oil Drain Interval and/or Oil Filter
Replacement Interval Incorrect
OK
f
Check records. Compare to specifications.
----------
Fuel Grade or Fuel Quality Poor or Incorrect
OK
f
Check fuel and compare to specifications.
Inspect/replace fuel filters and
fuel.
----------
Engine Coolant and Oil Temperature
Too Low
OK
f
Refer to the ‘‘Coolant Temperature
Below Normal’’ Symptom Chart.
----------
Coolant in the Oil
OK
f
Refer to the ‘‘Coolant in the Lubricating
Oil’’ Symptom Chart.
----------
Crankcase Breathers and/or Breather
Vent Tubes Restricted
OK
f
Check breathers and tubes. Refer to
Procedure 2-05.
----------
Blowby Excessive
OK
f
Refer to ‘‘Engine Crankcase Gases
(Blowby) - Excessive’’ Symptom Chart.
(Continued)
Troubleshooting Symptoms Charts SectionT-Troubleshooting
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