Series 60 DDEC VI Troubleshooting – Section 8.6 Defective Turbocharger

Section 8.6
Defective Turbocharger

To determine if a defective turbocharger is causing excessive exhaust smoke, perform the following:‪

1. Remove the exhaust pipe from the turbine outlet and remove the air intake pipe from the compressor inlet.
2. Visually inspect the turbine and compressor wheels for missing blades or blade damage.
3. Inspect the turbine and compressor wheels for heavy deposits of dirt, coke or carbon.
4. Using a flashlight, check the wheels and housings for signs of rubbing.
5. Rotate the turbine wheel to check for freedom of movement.
6. Replace the turbocharger if there is any visible damage. refer to appropriate service manual, air intake system chapter.

Section 8.6.1
Turbocharger Replacement

Perform the following steps to replace a defective turbocharger:‪

1. Remove defective turbocharger from the engine; refer to appropriate service manual, air intake system chapter.
2. Tag removed turbocharger for remanufacture.
3. Install a new turbocharger to the engine; refer to appropriate service manual, air intake system chapter.
4. Verify replacement of new turbocharger; refer to "8.6.1.1 Test Engine with Replaced Turbocharger" .

Section 8.6.1.1
Test Engine with Replaced Turbocharger

Perform the following steps to determine if a replaced turbocharger resolved the excessive exhaust smoke condition:‪

1. Start the engine.
2. Run the engine speed to full load.
3. Visually inspect the exhaust for excessive smoke.
   1. If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
   2. If the engine exhaust emission is excessive, shut down the engine. Call Detroit Diesel Customer Support Center (313-592-5800).