11 61 050 Removing And Installing Air Intake Manifold (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove tension strut . See 51 71 371 REMOVING AND INSTALLING/REPLACING TENSION STRUT ON LEFT OR RIGHT SPRING STRUT DOME .
Remove intake filter housing . See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING (N52/N52K/N53) .
Remove ignition coil cover . See 11 00 REMOVING AND INSTALLING/REPLACING ACOUSTIC COVER (N52/N52K) .

Release vacuum line (5) from line holder (4).

Disconnect vacuum hose (1) from vacuum line (5).

Release connections (2 and 3) of vacuum line (5).

Lay vacuum line (5) to one side.

Installation:

Connections (2 and 3) must snap audibly into place!

Fig 1: Identifying Vacuum Line, Line Holder, Vacuum Hose And Vacuum Line

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Unscrew nuts (1).

Tightening torque. See 32 41 2AZ in 32 41 PUMP AND OIL SUPPLY .

Installation:

Replace self-locking nut (1).

Place oil reservoir (2) in direction of arrow to one side.

Fig 2: Placing Oil Reservoir

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Release rubber holders (1 and 2) from guide.

Disconnect plug connection (3).

Installation:

Plug connection (3) must snap audibly into place!

Unclip line (4) from line holder.

Fig 3: Identifying Rubber Holders, Plug Connection And Unclip Line

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Open cable duct (4).

Expose lines (1 and 3).

Lay cable duct (4) (upper and lower sections) to one side.

NOTE: The lines (1 to 3) do not have to be detached in order to remove the air intake manifold!

Fig 4: Identifying Cable Duct And Expose Line

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Unfasten hose clip (1).

Tightening torque. See 11 61 3AZ in INTAKE MANIFOLD .

Detach clean-air gaiter (3) at position (2) in direction of arrow and remove.

Fig 5: Identifying Hose Clip And Clean-Air Gaiter

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Disconnect plug connection (1).

Installation:

Plug connections (1) must snap audibly into place!

IMPORTANT: Cover fitting (2) with suitable apparatus to prevent objects getting into it.

Fig 6: Identifying Plug Connection And Cover Fitting

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Release screw (2).

Tightening torque. See 11 61 4AZ in INTAKE MANIFOLD .

Unclip fuel line (1) at position (3) from holder (not shown).

Fig 7: Identifying Screw And Fuel Line

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Disconnect plug connection (1) and lay to one side.

Unclip lines at positions (4).

Remove plug connections (2 and 3).

Installation:

Plug connections (1 to 3) must snap audibly into place!

Lay both lines (5) between intake ducts (direction of arrow) downwards.

Fig 8: Identifying Plug Connection And Unclip Line

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NOTE: For purposes of clarity, the graphic shows the engine wiring harness removed.

Release screws (1).

Tightening torque. See 11 61 5AZ in INTAKE MANIFOLD .

Lay cable duct (2) with bracket (3) and engine wiring harness to one side.

Fig 9: Identifying Screws And Cable Duct With Bracket

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Unfasten screws (1 and 3).

Tightening torque. See 11 61 1AZ in INTAKE MANIFOLD .

Unscrew nuts (2).

Tightening torque. See 11 61 1AZ in INTAKE MANIFOLD .

Fig 10: Identifying Screws And Nuts

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Expose air intake manifold (3) in following work steps:

Raise air intake manifold (3) approx. 5 - 10 cm (see arrow 1).
Turn air intake manifold (3) at front through 45° (see arrow 2).

Fig 11: Turning Air Intake Manifold
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