11 15 002 Replacing engine crankcase ventilation line for cylinders 1-4

Necessary preliminary work: 

• Remove AIR INTAKE SILENCER HOUSING on right side.

Release clamp (1).

Tightening torque: 13 71 8AZ .

Bend the charge air pipe (2) slightly to the side.

Check the gasket on the exhaust turbocharger. replacing if necessary.

Version 1: 

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 2: Pulling Off Retainer Together With Line

   Courtesy of BMW OF NORTH AMERICA, INC.

Version 2: 

Pull the line (1) gently in the direction indicated by the arrow.

At the same time, use a screwdriver (3) to unlock the latch mechanisms (2) one after the other.

Pull the connecting line off the clean air pipe and engine crankcase ventilation line.

Release screw (1).

Tightening torque: 13 71 1AZ .

Pull clean air pipe (2) from exhaust turbocharger.

Release screws (1).

Remove oil filler neck.

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 6: Pulling Off Retainer Together With Line

   Courtesy of BMW OF NORTH AMERICA, INC.

Version 1: 

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 7: Pulling Off Retainer Together With Line

   Courtesy of BMW OF NORTH AMERICA, INC.

Version 2: 

Pull the line (1) gently in the direction indicated by the arrow.

At the same time, use a screwdriver (3) to unlock the latch mechanisms (2) one after the other.

Pull the connecting line off the clean air pipe and engine crankcase ventilation line.

Release screws (1).

Tightening torque: 12 51 2AZ .

Lift the engine wiring harness (2) slightly and remove the crankcase ventilation line.