13 71 150 Removing clean air pipe (N55)

Necessary preliminary work

Remove ignition coil cover. See 12..... REMOVING AND INSTALLING/REPLACING IGNITION COIL COVER (N55) .

Release clamps along line (1).

Release clamp (2).

IMPORTANT: Observe tightening torque without fail!
If hose clamp is tightened with a higher tightening torque, there is a risk of damage to the fresh air hose!

Tightening torque: 13 71 3AZ .

Unlock connector (3) on hot film air mass meter and disconnect.

Release upper section of intake silencer housing (4) at rear from clamps and remove in an upward direction.

Fig 1: Locating Upper Section Of Intake Filter Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque: 13 71 5AZ .

Unlock plug (4) from heating element and disconnect.

Do not detach vent hose at cylinder head cover. Risk of damage to cylinder head cover!

Undo screws (3) at clean air pipe (1) and pull vent hose off from clean air pipe!

Release screw (5).

Tightening torque: 13 71 7AZ .

Feed out clean air pipe (1) and remove.

Fig 2: Identifying Air Pipe And Screws

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Assemble engine.