11 61 050 Removing and installing air intake manifold (N52K)

Necessary preliminary tasks: 

• Remove TENSION STRUT
• Remove INTAKE FILTER HOUSING
• Remove IGNITION COIL COVER 

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: Locating Vacuum Line And Line Holder

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Unscrew nuts (1).

Installation: 

Replace self-locking nut (1). 

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

Fig 2: Identifying Oil Reservoir And Nuts

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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 And Plug Connection

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Open cable duct (4).

Expose lines (1 and 3).

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

Fig 4: Identifying Cable Duct And Lines

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Unfasten hose clip (1).

Tightening torque 11 61 3AZ .

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

Fig 5: Identifying Clean-Air Gaiter And Hose Clip

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Disconnect plug connection (1).

Installation: 

Plug connections (1) must snap audibly into place!

Fig 6: Identifying Plug Connections And Fittings

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Release screw (2).

Tightening torque 11 61 4AZ .

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

Fig 7: Identifying Fuel Line And Holder

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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 Connections And Lines

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Release screws (1).

Tightening torque 11 61 5AZ .

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

Fig 9: Identifying Cable Duct, Bracket, And Screws

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Unfasten screws (1 and 3).

Tightening torque 11 61 1AZ .

Unscrew nuts (2).

Tightening torque 11 61 2AZ .

Fig 10: Locating Screws And Nuts

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

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

Fig 11: Identifying Air Intake Manifold

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Disconnect plug connections (2).

Release engine ventilation connections (1).

Installation: 

Engine ventilation connections (1) and plug connections (2) must snap audibly into place!

Fig 12: Identifying Plug Connections and Engine Ventilation Connections

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Release tank venting connection (2).

Installation: 

Tank venting connection (2) must snap audibly into place!

Disconnect air intake manifold (1) in upward direction.

Fig 13: Identifying Tank Venting Connection And Air Intake Manifold

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Installation: 

Sealing faces must be free from oil and grease.

Fig 14: Identifying Intake Entries

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Installation: 

Replace gaskets (1). 

Fig 15: Locating Air Intake Gaskets

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Assemble engine.

Check air intake system for leaks.