Positive Crankcase Ventilation Valve: Service and Repair

Positive Crankcase Ventilation (PCV) Valve Replacement

Removal Procedure





1. Loosen the outlet duct clamp at the upper intake manifold cover.
2. Remove the upper intake manifold cover from the outlet duct.
3. Remove the upper intake manifold cover.






Important:
After removing the turbocharger air ducts, cover the turbocharger openings with tape to prevent entry of objects.

4. If removing the right side valve, loosen the outlet duct clamps at the turbocharger and the mass air flow/intake air temperature (MAF/IAT) sensor.
5. Remove the outlet duct.





6. If removing the right side valve, loosen the charged air cooler outlet duct to intake hose clamp (1).

Important:
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.

7. Remove the charged air cooler outlet duct from the intake.





8. If removing the left side valve, loosen the charged air cooler inlet duct to turbocharger clamp (1).

Important:
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.

9. Remove the charged air cooler inlet duct from the turbocharger.





10. In order to access the right side valve, remove the heater outlet hose nut (1).
11. Remove the heater outlet hose bolt (2).
12. Position the heater outlet hose out of the way.





13. Remove the positive crankcase ventilation (PCV) diaphragm cover screws.
14. Remove the diaphragm cover.
15. Remove the diaphragm and spring.
16. Clean the diaphragm cover, spring, and screws.
17. Inspect the diaphragm for cuts or damage.
18. Discard the diaphragm if damage is found.

Installation Procedure





1. Install the spring, diaphragm and cover.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the PCV diaphragm cover screws.
^ Tighten the screws to 4 Nm (35 lb in).





3. Position the heater outlet hose.
4. Install the heater outlet hose nut (1) and bolt (2).
^ Tighten the nut to 9 Nm (80 lb in).
^ Tighten the bolt to 25 Nm (18 lb ft).





5. Remove the tape from the turbocharger openings.
6. Align the mark on the duct (2) with the mark on the turbocharger.
7. Install the charged air cooler inlet duct to the turbocharger.
8. Position the clamp (1) as shown for proper clearance.
^ Tighten the clamp to 6 Nm (53 lb in).





9. Install the charged air cooler outlet duct to the intake. Align the mark on the duct (3) with the mark on the intake.
10. Position the clamp (1) as shown for proper clearance.
^ Tighten the clamp to 6 Nm (53 lb in).





11. Install the outlet duct to the turbocharger.
12. Align the outlet duct alignment indicator (1) to the turbocharger alignment indicator (2).






Important:
The outlet duct must be fully seated against the MAT/IAT sensor with the edge of the seal in the vertical position.

13. Install the outlet duct to the MAT/IAT sensor.
14. Tighten the outlet duct clamps at the turbocharger and the MAF/IAT sensor.
^ Tighten the clamps to 6 Nm (53 lb in).





15. Install the upper intake manifold cover.
16. Install the upper intake manifold cover to the outlet duct.
17. Tighten the outlet duct clamp at the upper intake manifold cover.
^ Tighten the clamp to 6 Nm (53 lb in).