11 12 000 Removing and installing, sealing cylinder head cover (S54): Installation:

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.

The cables of the oxygen sensors are clipped into mounts on the shield plate of the exhaust manifold.

CAUTION: Ensure cables are exactly routed.

CAUTION: It is very easy for the sealing ring between the cylinder head cover and the return line to drop into the engine.

Carefully release hollow screw (1) and remove sealing ring between cylinder head cover and return line.

Fig 1: Removing Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace sealing rings.

Tightening torque 25 N.m.

Detach grounding strap (2) for ignition coils from cylinder head.

NOTE: The plug housings of the oxygen sensors for cylinders 1 to 3 and 4 to 6 are different.

Unclip plug housing (1) from mounting.

Fig 2: Locating Plug Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections of oxygen sensors.

Feed oxygen sensor cables out of cable guide and lay to one side.

Remove ignition coils. Refer to 12 13 511 REPLACING IGNITION COIL (S54) .

Lay ignition coil and oxygen sensor cables to one side.

Remove cylinder head cover (1).

Fig 3: Removing Cylinder Head Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Remove sealing debris from sealing faces of cylinder head and cylinder head cover.

Apply a sealing bead of Drei Bond 1209 on left and right sides at transition between cylinder head and VANOS adjustment unit.

Fig 1: Applying Drei Bond

Courtesy of BMW OF NORTH AMERICA, INC.

Apply a thin and even sealing bead of Drei Bond 1209 at transition to half-moon sections at rear of cylinder head.

Fig 1: Applying Drei Bond To Half-Moon Sections

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration with engine removed.

Installation:

Replace sealing rings (1).

Fig 2: Replacing Sealing Rings

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The gasket of the cylinder head cover is secured with guide pins on the cylinder head and on the VANOS adjustment unit.

Fig 3: Identifying Gasket Of Cylinder Head Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace gasket of cylinder head cover. Preassemble gasket of cylinder head cover on cylinder head.

CAUTION: The guide pins may buckle very slightly during installation. Make sure that guide pins are exactly fed into bore holes.

Make sure gasket is correctly seated on rear and front ends of cylinder head.

Fig 1: Identifying Gasket Seating

Courtesy of BMW OF NORTH AMERICA, INC.

Illustration with engine removed.

CAUTION: Different rubber gaskets: front low version.

Installation:

Replace rubber gaskets.

Fig 2: Installing Cap Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Install all cap nuts and align cylinder head cover.

Fit all cap nuts without pretension. Tighten down cap nuts in diagonal sequence from inside to outside.