Overview - Crankcase Ventilation

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, and 2016 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Crankcase Ventilation Components

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Hose
- For the crankcase ventilation
Cover
- For oil separator
Oil Separator
- Replace if damaged
- Removing and installing. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .
O-ring
- Replace after removing.
- Coat with oil before installing
Connection
- Pay attention to the correct position
Hose
- For the crankcase ventilation
Bolt
- Tightening specification and sequence. Refer to Fig 2.
- Replace after removing.
- Self-locking

Fig 2: Oil Separator - Tightening Sequence (Loosening 9 to 1)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the bolts in the sequence -1 through 9-.

Component	Tightening Specification
Tighten the bolts in the sequence -1 through 9-.	9 Nm