Symptom Tree t106
Cause | Correction |
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Bulk oil supply is contaminated |
Check the bulk oil supply. Drain the oil and replace with noncontaminated oil. Replace the oil filters. Refer to Procedure 007-025. |
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Lubricating oil does not meet specifications for operating conditions |
Change the oil and filters. Refer to Procedure 007-013 or 007-025, and the Cummins Engine Oil Recommendations, Bulletin 3810340. |
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Lubricating oil drain interval is excessive |
Verify the correct lubricating oil drain interval. Refer to Section 2 of the Operation and Maintenance Manual ISM and ISMe Engines, Bulletin 3666319. |
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Fuel grade is not correct for the application or the fuel quality is poor |
Operate the engine from a tank of high-quality fuel. Refer to Fuels for Cummins Engines, Bulletin 3379001. |
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Lubricating oil is contaminated with coolant or fuel |
Change the oil and filters. Refer to the Lubricating Oil Contaminated symptom tree. |
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Injector cup is damaged or is not correct |
Check the injector cups for damage and for correct part numbers. Refer to Procedure 006-026. |
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Static injection timing is not correct |
Check the static injection timing. Refer to 006-025. |