11 12 100 Removing and installing/sealing cylinder head (S54): Removal

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Removal of cylinder head is described separately from installation.

Remove camshafts. Refer to 11 31 019 Replacing camshafts (S54) .

CAUTION: It is very easy for the adjustment plates to fall down.

Raise rocker arm.

NOTE: Special tool 11 4 400 is magnetic.

Remove all adjustment plates with special tool 11 4 400 and set to one side in order.

Fig 1: Removing Adjustment Plates

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CAUTION: The connector strip may break if it is removed without special tool 12 1 120.

Unlock connector strip with special tool 12 1 120 in sequence 1 to 6.

Fig 2: Identifying Connector Strip Sequence

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Press lock and detach hose from supplementary air line.

Fig 3: Detaching Hose From Supplementary Air Line

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Detach bracket for idle-speed control valve from return line and lay with hoses to one side.

Fig 4: Locating Bracket & Plug Connection

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Disconnect plug connection (1) to temperature sensor.

Remove thermostat housing (1).

Fig 5: Removing Thermostat Housing

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Installation:

Replace sealing rings.

Remove belt pulley (2).

Remove pipe (3).

Pull off vacuum hose (1).

Fig 6: Locating Components

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NOTE: Illustration with engine removed.

Feed out upper cover section (2) towards top.

Detach wiring harness from retaining lug (3).

Pull connector strip (4) upwards.

Disconnect plug connection to camshaft sensor of inlet and exhaust camshafts.

Disconnect plug connection to throttle actuator.

Lay connector strip (4) to one side.

Remove pull rod (1).

Fig 7: Removing Pull Rod

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Unfasten screws.

NOTE: Do not remove pipe (2).

Unlock water hose (1) and detach from return line.

Fig 8: Removing Water Hose

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Release upper screw of fuel feed line (2) from return line.

Release lower screw of fuel feed line (2) from engine block.

Fig 9: Releasing Lower Screw Of Fuel Feed Line

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Detach retaining clip (1) of fuel feed line.

Fig 10: Detaching Retaining Clip Of Fuel Feed Line

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NOTE: Catch and dispose of escaping fuel.

Pull fuel feed line downwards.

NOTE: The thrust bearing flange (1) and the cylinder head are machined as a single unit and must not be replaced individually.

Remove thrust bearing flange (1).

Fig 11: Removing Thrust Bearing Flange

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NOTE: Sliding rail (1) is screwed to cylinder head.

Release screw (2).

Fig 12: Removing Sliding Rail From Cylinder Head

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