Symptom Tree t012
| Cause | Correction |
|---|
|
Electronic fault codes active or high counts of inactive fault codes |
Refer to Section TF in the ISX CM871 and ISM CM876 Electronic Control System Troubleshooting and Repair Manual, Bulletin 4021560. |
 |
|
Extended operation of engine in low duty cycle, extended idling and/or low ambient temperatures |
Perform stationary regeneration with the INSITE electronic service tool. Refer to Procedure 014-013. |
|
|
Lubricating oil being used has high ash content. |
Use an engine lubricating oil that meets CES 20081. Refer to the appropriate Operation and Maintenance. |
|
|
Blending of engine lubricating oil into fuel. |
Confirm oil blending into fuel. Drain fuel and replace with clean fuel. Discontinue practice of blending oil with fuel. Refer to the appropriate Operation and Maintenance Manual. |
|
|
Fuel supplement/additive used has high ash content. |
Discontinue use of the fuel supplement/additive being used. Refer to Cummins Fuel Recommendation Bulletin 3379001. |
|
|
Intake air filtration system malfunctioned allowing dust contamination. |
Review the air intake filtration system for malfunction. Refer to Procedure 010-024. |
|
|
Crankcase pressure is excessive |
Measure the engine blowby. If blowby is above specification, refer to the Crankcase Gases (Blowby). Excessive symptom tree. Replace the blowby sensor if there were not any sensor fault codes. Refer to Crankcase Gases (Blowby) Excessive Troubleshooting Symptom Tree. |
|
|
Excessive internal oil consumption |
Refer to the Oil Consumption – Excessive Troubleshooting Symptom Tree. |
