11 34 715 Replacing all valve springs (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 0 346
11 4 480
11 9 000
11 9 017

Necessary preliminary tasks:

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

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 Cotters With Magnet

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.

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

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

Fig 3: Identifying Colour-Coded Of Valve Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement:

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

Fig 4: Identifying Valve Components

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

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