11 12 100 Removing And Installing/Sealing Cylinder Head (S54): Removal

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. 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: Raising Rocker Arm

Courtesy of BMW OF NORTH AMERICA, INC.

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 Removal Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Press lock and detach hose from supplementary air line.

Fig 3: Detaching Hose From Supplementary Air Line

Courtesy of BMW OF NORTH AMERICA, INC.

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

Disconnect plug connection (1) to temperature sensor.

Fig 4: Disconnecting Plug Connection To Temperature Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Remove thermostat housing (1).

Installation:

Replace sealing rings.

Remove belt pulley (2).

Remove pipe (3).

Fig 5: Removing Thermostat Housing And Belt Pulley

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration with engine removed.

Pull off vacuum hose (1).

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.

Fig 6: View Of Upper Cover Section

Courtesy of BMW OF NORTH AMERICA, INC.

Remove pull rod (1).

Unfasten screws.

NOTE: Do not remove pipe (2).

Fig 7: Identifying Pull Rod

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Fig 8: Locating Upper Screw Of Fuel Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 9: View Of Lower Screw Of Fuel Feed Line From Engine Block

Courtesy of BMW OF NORTH AMERICA, INC.

Detach retaining clip (1) of fuel feed line.

NOTE: Catch and dispose of escaping fuel.

Pull fuel feed line downwards.

Fig 10: Identifying Retaining Clip Of Fuel Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Release screw (2).

Fig 12: View Of Sliding Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws between cylinder head and timing case cover. Remove cable holder (1).

Fig 13: Removing Cable Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release cylinder head bolts from outside to inside in sequence 14 to 1.

Lift off cylinder head.

Fig 14: Identifying Sequence Of Releasing Cylinder Head Bolts

Courtesy of BMW OF NORTH AMERICA, INC.