Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 328xi, and 2010 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Place cylinder head on special tool 11 9 000 .

Press down inlet valves with special tool 11 9 017.

Press down exhaust valves with special tool 11 0 346.

Fig 1: Identifying Special Tools (11 9 000 And 11 9 017)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove valve cotters with a magnet.

Remove valve spring with spring plates.

If the individual components are to be reused, they must be placed in neat order in special tool 11 4 480 .

Fig 2: Removing Valve Spring And Spring Cup

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Incorrect installation possible.
Incorrect installation will result in valve spring breakage.
Risk of mixing up the valve springs for the inlet and exhaust valves.

Fig 3: Identifying Valve Spring Dimensions

Courtesy of BMW OF NORTH AMERICA, INC.

The valve spring is color-coded (1) at the lower end.

Install the valve spring so that the larger diameter points to the lower spring plate.

Arrangement:

Valve
Valve stem seal with lower spring plate
Valve spring
Upper spring plate
Valve tapers

Fig 4: Exploded View Of Valve Assembly

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME; if necessary, readjust uniform mixture distribution.