Symptom Tree t006
| Cause | Correction |
|---|
|
Air compressor mounting hardware is loose, worn, or broken |
Check air compressor mounting hardware. Refer to Procedure 012-014. |
 |
|
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. |
|
|
Ice buildup in the air system components |
For all models, check for ice in low spots of the air discharge line, dryer inlet, and elbow fittings. On Holset® models, also check the Econ valve (if equipped). Refer to the manufacturer’s instructions. |
|
|
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 and 010-049. |
|
|
Air compressor drive gear or engine gear train is worn or damaged |
Inspect the accessory drive gears and gear train. Refer to Procedure 001-033. |
|
|
Splined drive coupling or gear is excessively worn |
Check the coupling for wear. Refer to Procedure 012-014. |
|
|
Air compressor timing is not correct |
Check the air compressor timing. Refer to Procedure 012-014. |
|
|
Air compressor is excessively worn or internally damaged |
Replace or rebuild the air compressor. Refer to Procedure 012-014. Replace the desiccant element on the Turbo/CR 2000 air dryer (if equipped). Refer to the manufacturer’s instructions. |
|
|
Pin bore wear is excessive |
Check for pin bore wear. Refer to Procedure 012-010. |
