11 34 552 Removing and installing/replacing all valves (N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove INTERMEDIATE LEVER .
Remove ECCENTRIC SHAFT .
Remove INTAKE CAMSHAFT .
Remove EXHAUST CAMSHAFT .
Remove ROCKER ARM .
Remove VALVE SPRINGS .
Remove VALVE STEM SEALS .

Arrangement:

Intake valve 5 mm dia.
Valve stem seal with lower spring cup
Valve spring
Upper spring cup
Valve keys

If the valves are to be reused, they must be placed in neat order in special tool 11 4 481 .

Fig 1: Identifying Valve Components

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement:

Discharge valve 6 mm dia.
Valve stem seal with lower spring cup
Valve spring
Upper spring cup
Valve keys

If the valves are to be reused, they must be placed in neat order in special tool 11 4 482 .

Fig 2: Identifying Valve Components

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of Digital Engine Electronics; if necessary, readjust uniform mixture distribution.