Centinel System – Repair Manual – Air Compressor Noise is Excessive

Ice buildup in the air system components

Check for ice in low spots of the air discharge line.

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 and cylinder head assembly if necessary. Refer to Procedure 012-003.

Air compressor is sending air pulses into the air tanks

Install a ping tank between the air dryer and the wet tank and check discharge line size for the application. Refer to the OEM service manual.

Air compressor timing is not correct

Check the air compressor timing. Refer to Procedure 012-014.

Air compressor mounting hardware is loose, worn, or broken

Check air compressor mounting hardware. Refer to Procedure 012-014.

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 and the OEM service manual.

Air compressor drive gear or engine gear train is worn or damaged

Inspect the drive gears and gear train and repair as necessary. Refer to Procedure 012-014.