Symptom Tree
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Lubricating oil drain interval is excessive |
Verify the correct lubricating oil drain interval. Refer to Section 2 |
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Air intake system restriction to air compressor is excessive |
Replace the air compressor air cleaner (if installed). Check the air intake piping. Check engine air intake restriction if the air compressor inlet is plumbed to the vehicle or equipment intake system. Refer to Section 4 |
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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 or Air Compressor Will Not Stop Pumping symptom tree. |
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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. Refer to Section 6 |
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| Contact a Cummins Authorized Repair Facility |
