Positive Crankcase Ventilation Valve Replacement Left

1. Remove the air cleaner. Refer to Air Cleaner Replacement in Engine Controls - 6.6L (LLY).




Important: After removing the charged air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.

2. Loosen the charged air cooler inlet duct connector (2) to turbocharger clamp (4).

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.

3. Remove the charged air cooler inlet duct connector (4) from the turbocharger.



4. Remove the positive crankcase ventilation (PCV) cover screws.
5. Remove the PCV cover, diaphragm, and spring.
6. Clean and inspect the cover, diaphragm and spring.
7. Discard the diaphragm if damage is found.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the spring, diaphragm and cover.
2. Install the PCV cover screws.

Tighten
Tighten the screws to 4 N·m (35 lb in).




3. Remove the tape from the turbocharger openings.

Important: Lubricate the end of the duct prior to installation.

4. Install the charged air cooler inlet duct connector (4) to the turbocharger.
5. Tighten the charged air cooler inlet duct connector to turbocharger clamp (1).

Tighten
Tighten the clamp to 6 N·m (53 lb in).

6. Install the air cleaner. Refer to Air Cleaner Replacement in Engine Controls - 6.6L (LLY).

Positive Crankcase Ventilation Valve Replacement Right

1. Remove the positive crankcase ventilation (PCV) cover screws (1).
2. Remove the PCV cover (2), diaphragm (3), and spring (4).
3. Clean and inspect the cover, diaphragm and spring.
4. Discard the diaphragm if damage is found.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the spring (4), diaphragm (3) and cover (2).
2. Install the PCV cover screws (1).

Tighten
Tighten the screws to 4 N·m (35 lb in).