11 61 050 Removing and installing intake air manifold (M62)

WARNING: This page is about a different variant/trim than selected.

Instructions for disconnecting and connecting battery,

refer to 12 00 .. INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery negative terminal.

Remove heater bulkhead,

refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

Turn fasteners on acoustic cover 90° counterclockwise, remove acoustic cover.

Fig 1: Removing Acoustic Cover

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Remove covers for ignition coils.

Fig 2: Removing Covers For Ignition Coils

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Disconnect plug connections to ignition coils.

Release bellows on throttle. Remove intake filter housing with air-mass flow sensor.

Detach battery positive lead from support point on firewall. Feed out battery positive lead and lay to one side.

Release wiring harness section for engine from intake air manifold and lay to one side with cable ducts.

Detach hoses for vacuum control of air injection.

Remove vacuum hose from throttle body.

CAUTION: Catch and dispose of escaping fuel.

Disconnect fuel feed line from injection pipe and seal hose ends with special tool 13 5 281 and special tool 13 5 282.

NOTE: Illustration with engine removed.

Disconnect hose (1) for engine ventilation from cylinder head cover, cylinder bank 5 to 8.

Disconnect hose (2) for engine ventilation from oil separator.

Detach connection piece (3) for brake booster.

Fig 3: Removing Hoses For Engine Ventilation

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NOTE: Illustration with engine removed.

Remove oil separator from cover at rear.

Fig 4: Removing Oil Separator

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CAUTION: An oil drain hose from rear cover is connected under intake air manifold.

After the screw connection has been released, the intake air manifold cannot be removed yet.

Unfasten nuts (left and right). Remove decoupling elements.

Fig 5: Removing Intake Manifold & Decoupling Element Nuts

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Raise intake air manifold approx. 10 cm and carefully tilt to one side.

Disconnect oil drain hose from rear cover.

Lift out intake air manifold.

Fig 6: Disconnecting Oil Drain Hose From Rear Cover

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Installation:

Check oil drain for damage.

If necessary, replace oil drain hose and chafe protector.

Ensure it is routed without kinks.

If necessary, remove vent pipe in intake air manifold:

Remove throttle valve.

Remove covers at front and rear from intake air manifold.

NOTE: Vent pipe is located with a lug (1) and locked with a retaining lug (2) in intake air manifold.

Carefully press retaining lug (2) back and push vent pipe out of bore.

Fig 7: Identifying Vent Pipe & Seal

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Remove vent pipe (1).

Installation:

Replace seal.

Fig 8: Identifying Vent Pipe

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Installation:

Insert vent pipe.

Check fixture (1) and lock (2) of vent pipe in intake air manifold.

Replace seals.

Install covers at front and rear.

Fig 9: Installing Vent Pipe & Seal

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NOTE: The intake air manifold is vibrationally separated from the cylinder head by decoupling elements and gaskets.

Fig 10: Identifying Intake Air Manifold Decoupling Elements And Seals

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Installation:

Check seals and replace if necessary.

CAUTION: Ensure that seals are correctly seated.

Fig 11: Checking Seals For Correctly Seating

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Installation:

Fit two decoupling elements on left and right with nuts and do not tighten (i.e. no preload).

Fig 12: Installing Decoupling Elements & Intake Manifold

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Align intake air manifold.

Fit all other decoupling elements with nuts and tighten crosswise from inside to outside.

Tightening torque,

refer to 11 61 1AZ in ENGINE - TIGHTENING TORQUES - X5 4.6L .