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Cummins ISX11.9 CM2250 – Service Manual Air Compressor Noise is Excessive

Symptom Tree  t006

This is symptom tree t006
Cause Correction

Air compressor drive gear or engine gear train is worn, damaged, or adjusted incorrectly

Inspect the air compressor drive gear and engine gear train, and repair or adjust as necessary. Refer to Procedure 012-014 in Section 12, Procedure 001-055 in Section 1, and Procedure 012-003 in Section 12.

 

Carbon buildup is excessive in the air discharge line, downstream air valves, or cylinder head

Check for carbon buildup. Replace the air compressor discharge line, cylinder head, or air compressor. Check the turbocharger for oil leaks. Check the intake tube for oil. Refer to Procedure 012-014 in Section 12, Procedure 001-055 in Section 1, and Procedure 012-003 in Section 12.

 

Air compressor is sending air pulses into the air tanks

Install a ping tank between the air dryer and the wet tank. Refer to the OEM service manual.

 

Air compressor mounting hardware is loose, worn, or broken

Identify whether there are air system issues or the air compressor has malfunctioned. Refer to Procedure 012-014 in Section 12.

 

Air compressor is excessively worn or internally damaged

Replace the air compressor. Replace the desiccant element on the air dryer, if equipped. Refer to Procedure 012-014 in Section 12 and the OEM service manual.

 
Last Modified:  22-Dec-2010