Symptom Tree t102
| Cause | Correction |
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Verify the oil consumption rate |
Check the amount of oil added versus the mileage. Refer to Procedure 502-016 in Section 2. This procedure is in the Warranty Administration Manual, Bulletin 4021290. |
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Lubricating oil leak (external) |
Inspect the engine for external oil leaks. Tighten the capscrews, pipe plugs, and fittings. Replace gaskets, if necessary. Refer to Procedure 018-012 in Section V. Refer to Procedure 018-009 in Section V for specifications. |
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Crankcase ventilation system is plugged |
Check and clean the crankcase breather and vent tube. Refer to Procedure 003-002 in Section 3.. |
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Air compressor is pumping lubricating oil into the air system |
Check the air lines for carbon buildup and lubricating oil. Refer to the Air Compressor is Pumping Excessive Lubricating Oil Into the Air System symptom tree. |
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Turbocharger oil seal is leaking |
Check the turbocharger compressor and turbine seals. Refer to Procedure 010-033 in Section 10. |
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Lubricating oil cooler is leaking |
Check for lubricating oil in the coolant. Refer to the Lubricating Oil or the Transmission Oil in the Coolant symptom tree. |
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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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Lubricating oil dipstick calibration is not correct |
Check the dipstick calibration. Refer to Procedure 007-009 in Section 7. |
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Lubricating oil does not meet specifications for operating conditions |
Change the oil and filters. Refer to the Operation and Maintenance Manual ISM and ISMe Engines, Bulletin 3666319. Use the oil type recommended in Section V. |
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Lubricating oil drain interval is excessive |
Verify the correct lubricating oil drain interval. Refer to the Operation and Maintenance Manual, ISM and ISMe Engines, Bulletin 3666319. |
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Piston, cylinder liner, or piston rings are worn or damaged |
Check for air intake system leaks. Refer to Procedure 010-024 in Section 10. |
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Piston rings are not seated correctly (after an engine rebuild or piston installation) |
Check blowby. Refer to Section 14. If blowby is excessive, check the piston rings for correct seating. Refer to Procedure 001-043 in Section 1. Refer to Procedure 001-047 in Section 1. |
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