Symptom Tree t007
| Cause | Correction |
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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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Air intake system restriction to air compressor |
Replace the air compressor air cleaner (if installed). Check the air intake piping. Check for air intake restriction. Refer to Procedure 010-031Procedure 010-031. |
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Contaminants are building up in the system reservoirs |
Drain the reservoirs daily. Refer to the Operation and Maintenance Manual, ISM and ISMe Engines, Bulletin 3666319. |
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E-type system is not plumbed correctly |
Install an Econ valve, a check valve, and system hoses. Refer to Master Repair Manual, Holset® Air Compressors, Bulletin 3666121. |
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Air compressor pumping time is excessive |
Replace the desiccant cartridge on the Turbo/CR 2000 air dryer. Refer to the OEM service manual. Check the air compressor duty cycle. Install a larger air compressor, if necessary. Refer to the OEM service manual and the Master Repair Manual, Holset® Air Compressors, Bulletin 3666121.. |
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Carbon buildup is excessive in the air discharge line, check valve, or cylinder head |
Check for carbon buildup. Replace the air compressor discharge line, if necessary. Check the turbocharger for oil leaks. Check the intake tube for oil. Refer to Procedures 012-003, 010-040 and 010-049. |
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Engine angularity during operation exceeds specification |
Refer to the engine specification data sheet. |
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Crankcase pressure is excessive |
Check for excessive blowby. Refer to Section 14. |
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Lubricating oil pressure is above specification |
Check the oil pressure. Refer to Procedure 007-028. |
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Air compressor runs hot |
If coolant temperature is above normal, refer to Coolant Temperature Above Normal – Gradual Overheat symptom tree. |
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Lubricating oil drain line is restricted |
Remove the air compressor and check the oil drain holes in the air compressor and the accessory drive. Refer to Procedure 012-014. |
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Air compressor is excessively worn or internally damaged |
Replace or rebuild the air compressor. Refer to Procedure 012-014 and the manufacturer’s instructions. Replace the desiccant element on the Turbo/CR 2000 air dryer (if equipped). Refer to the manufacturer’s instructions. |
