Holset Air Compressors – Air Compressor Noise is Excessive

Symptom Tree  t006

This is symptom tree t006
Cause Correction

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 the OEM service manual.

 

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 manufacturer’s instructions.

 

Accessory drive is worn (axial end play is out of specification)

Check the accessory drive axial end play. Inspect the shaft for wear. Refer to the OEM service manual.

 

Splined drive coupling or gear is excessively worn

Check the coupling for wear. Refer to Procedures 012-102, 012-105, 012-107, and 012-108.

 

Air compressor is excessively worn or internally damaged

Replace or rebuild the air compressor. Refer to the manufacturer’s instructions.

 

Air compressor timing is not correct

Check the air compressor timing. Refer to 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 the OEM service manual.

 
Last Modified:  13-Jun-2005