VIN 6

Turbocharger Replacement

Caution: If a turbocharger has failed, clean any turbocharger debris or excessive oil from the charge air cooler system before installing the new turbocharger. Failure to clean debris from the charge air cooler system will cause severe turbocharger and engine damage upon start-up. Failure to clean excessive oil from the charge air cooler system may cause an engine runaway condition on start-up, resulting in severe engine damage.

Note: If a turbocharger failure is thought to be caused due to a lack of oil, the camshaft bearing should be checked. The number 4 camshaft bearing bore feeds the turbocharger oil supply (feed) pipe. If this camshaft bearing spins in the bore, the turbocharger will be starved for oil. This will cause a failure of the turbocharger. Failure to diagnosis this condition will result in repeat turbocharger failures.




1. Disconnect the negative battery cable. Refer to Lifting and Jacking the Vehicle (Service and Repair).
2. Remove the left exhaust pipe. Refer to Exhaust Pipe Replacement - Left Side (6.6L (LMM)) (Exhaust Pipe Replacement - Left Side).
3. Remove the right exhaust pipe. Refer to Exhaust Pipe Replacement - Right Side (6.6L (LMM)) (Exhaust Pipe Replacement - Right Side).
4. Remove the exhaust gas recirculation (EGR) cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement (Exhaust Gas Recirculation Valve Cooler Replacement).
5. Remove the charge air cooler outlet pipe. Refer to Charge Air Cooler Inlet and Outlet Duct Replacement (Inlet) (Charge Air Cooler Inlet and Outlet Duct Replacement (Inlet)) Charge Air Cooler Inlet and Outlet Duct Replacement (Outlet) (Charge Air Cooler Inlet and Outlet Duct Replacement (Outlet)).
6. Remove the air intake pipe. Refer to Air Intake Pipe Replacement (Air Intake Pipe Replacement).
7. Disconnect the engine wiring harness electrical connector from the turbocharger vane position sensor.
8. Disconnect the engine wiring harness electrical connector from the turbocharger vane control solenoid valve.




9. Loosen the charge air cooler inlet duct clamp (1) at the turbocharger.

Note:
* Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.
* After removing the charge air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.

10. Remove the charge air cooler inlet duct (2) from the turbocharger




11. Remove the EGR cooler pipe bolt.




12. Reposition the EGR cooler pipe (4) out of the way.
13. Remove the EGR valve adapter pipe bracket bolts (1).
14. Remove the EGR valve adapter pipe bracket (2) and turbocharger heat shield (3).





Note: Use care not to damage this hose during the procedure.

15. Reposition the turbocharger coolant outlet pipe clamp (1) and remove the hose from the turbocharger pipe.





Note: Use care not to damage this hose during the procedure.

16. Reposition the turbocharger coolant inlet pipe clamp (1) and remove the hose from the turbocharger pipe.




17. Remove the turbocharger oil feed pipe banjo bolt and washer. Discard the banjo bolt and washer.
18. Reposition and secure the turbocharger oil feed pipe out of the way.
19. Remove the turbocharger oil return pipe nuts at the top of the flywheel housing.




20. Remove the turbocharger bolts.
21. Remove the turbocharger (with the oil return pipe).
22. Remove and discard the turbocharger oil return pipe gasket at the flywheel housing.




23. Remove the turbocharger lower heat shield, if necessary.

Caution: Do not twist the turbocharger oil feed pipe. Twisting of the feed pipe will result in the collapse and deformation of the plastic pipe, restricting oil flow and causing turbocharger damage. During turbocharger replacement, gently push the oil feed pipe towards the front of the engine to clear the turbocharger. Assistance may be required to keep the pipes clear of the turbocharger during removal or installation.

24. Remove the turbocharger oil feed pipe bolt, washer, and pipe, if necessary.
25. If the turbocharger has failed, perform the following steps in order to verify the condition of the number 4 camshaft bearing before installing a new turbocharger.

* Visually inspect for correct alignment of the number 4 camshaft bearing oil hole through the turbocharger oil supply hole in the block.
* Turn the engine over by hand 1/2 turn and inspect for camshaft bearing movement, indicating a spun camshaft bearing.
* If the bearing is spun the engine MUST be replaced.




26. If replacing the turbocharger perform the following steps otherwise proceed to step 11 in the installation procedure.
27. Remove the oil return pipe bolts, pipe, and gasket from the turbocharger. Discard the gasket.




28. Remove the turbocharger vane position sensor.




29. Remove the turbocharger coolant feed pipe banjo bolt (1), washers and pipe (2).
30. Remove the turbocharger coolant return pipe banjo bolt (3) and washers.
31. Remove the turbocharger coolant return pipe clip nut (5) and pipe (4).

Installation Procedure

1. If replacing the turbocharger perform the following steps otherwise proceed to step 11.
2. Install the cooling outlet hose eye bolts.





Caution: Refer to Fastener Caution (Fastener Caution).

3. Position the turbocharger coolant return pipe (4) and install the clip nut (5). Tighten the nut to 9 Nm (80 lb in).
4. Position the turbocharger coolant return pipe washers and install the banjo bolt (3). Tighten the bolt to 25 Nm (18 lb ft).
5. Position the turbocharger coolant feed pipe washers and pipe (2), and install the banjo bolt (1). Tighten the bolt to 25 Nm (18 lb ft).




6. Install the turbocharger vane position sensor and tighten to 28 Nm (21 lb ft).




7. Position a NEW oil return pipe gasket to the turbocharger and install the oil return pipe and bolts to the turbocharger. Tighten the bolts to 21 Nm (15 lb ft).





Caution: Do not twist the turbocharger oil feed pipe. Twisting of the feed pipe will result in the collapse and deformation of the plastic pipe, restricting oil flow and causing turbocharger damage. During turbocharger replacement, gently push the oil feed pipe towards the front of the engine to clear the turbocharger. Assistance may be required to keep the pipes clear of the turbocharger during removal or installation.

Note: Lubricate the washer with diesel fuel prior to installing.

8. Install a NEW turbocharger oil feed pipe washer onto the banjo fitting, if necessary.
9. Install the turbocharger oil feed pipe and bolt, if necessary. Tighten the bolt to 34 Nm (25 lb ft).
10. Install the turbocharger lower heat shield, if necessary.




11. Install a NEW turbocharger oil return pipe gasket at the flywheel housing.
12. Install the turbocharger.
13. Install the turbocharger bolts and tighten to 108 Nm (80 lb ft).




14. Install the turbocharger oil return pipe nuts at the top of the flywheel housing and tighten to 25 Nm (18 lb ft).
15. Unsecure and position the turbocharger oil feed pipe to the correct position.

Note: Lubricate the washer with diesel fuel prior to installing.

16. Install a NEW turbocharger oil feed pipe washer onto the banjo fitting and install the feed pipe bolt and tighten to 34 Nm (25 lb ft).





Note: Use care not to damage this hose during the procedure.

17. Install the turbocharger coolant inlet pipe hose to the turbocharger pipe and position the clamp (1).





Note: Use care not to damage this hose during the procedure.

18. Install the turbocharger coolant outlet hose to the turbocharger pipe and position the clamp (1).




19. Install the turbocharger heat shield (3) and EGR valve adapter pipe bracket (2).
20. Install the EGR valve adapter pipe bracket bolts (1) and tighten to 9 Nm (80 lb in).
21. Position the EGR cooler pipe (4).




22. Install the EGR cooler pipe bolt and tighten to 9 Nm (80 lb in).




23. Remove the tape from the turbocharger openings.
24. Install the charge air cooler inlet duct (2) to the turbocharger.
25. Tighten the charge air cooler inlet duct clamp (1) at the turbocharger and then tighten the bolts to 8 Nm (71 lb in).




26. Connect the engine wiring harness electrical connector to the turbocharger vane control solenoid valve.
27. Connect the engine wiring harness electrical connector from the turbocharger vane position sensor.
28. Install the air intake pipe. Refer to Air Intake Pipe Replacement (Air Intake Pipe Replacement).
29. Install the charge air cooler outlet pipe. Refer to Charge Air Cooler Inlet and Outlet Duct Replacement (Inlet) (Charge Air Cooler Inlet and Outlet Duct Replacement (Inlet)) Charge Air Cooler Inlet and Outlet Duct Replacement (Outlet) (Charge Air Cooler Inlet and Outlet Duct Replacement (Outlet)).
30. Install the EGR cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement (Exhaust Gas Recirculation Valve Cooler Replacement).
31. Install the right exhaust pipe. Refer to Exhaust Pipe Replacement - Right Side (6.6L (LMM)) (Exhaust Pipe Replacement - Right Side).
32. Install the left exhaust pipe. Refer to Exhaust Pipe Replacement - Left Side (6.6L (LMM)) (Exhaust Pipe Replacement - Left Side).
33. Install NEW engine oil and a NEW oil filter. Refer to Engine Oil and Oil Filter Replacement (Service and Repair).
34. Connect the negative battery cable. Refer to Lifting and Jacking the Vehicle (Service and Repair).