11 15 003 Replacing engine crankcase ventilation line for cylinders 5-8 (N63)

Necessary preliminary tasks: 

• Remove AIR INTAKE SILENCER HOUSING on left
• Remove INTAKE PORT 
• Release COOLANT EXPANSION TANK and place to one side
• Release WATER VALVE from side member

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: Unlocking Retainer And Pulling Off Connecting 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.

1. Unlock the retainer.
2. Pull off the retainer together with the line.
   Fig 5: Unlocking Retainer And Pulling Off Ventilation Line

   Courtesy of BMW OF NORTH AMERICA, INC.

Version 1: 

1. Unlock the retainer.
2. Pull off the retainer together with the line.

Extract the crankcase ventilation line.

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.

Extract the crankcase ventilation line.