1134560 Replacing all valve stem seals (N51)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 328xi, 2010 BMW 328i, and 2009 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove INTERMEDIATE LEVER .
Remove ECCENTRIC SHAFT .
Remove INLET CAMSHAFT .
Remove EXHAUST CAMSHAFT .
Remove ROLLER CAM FOLLOWER .

Firmly press special tool 11 1 480 onto old valve stem seals.

Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480.

Installation:

Insert all VALVES .

Fig 1: Inserting Valves

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For use on the N51 engine, special tool 11 6 380 BUSH must be remachined according to the sketch with a 10mm dia. drill bit to a depth of B = approx. 23 mm.
This modification has already been taken into account for reordering.

Fig 2: Identifying Special Tool (11 6 380) With 10mm Dia.

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Different diameters at valve stem.

Valve dia. 5 mm: valve stem seal is red or brown.

Valve dia. 6 mm: valve stem seal is green or light green.

Fig 3: Identifying Valve Stem Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Fit the mounting sleeves (plastic sleeves) supplied in the spare part on the valve stem end

Lubricate mounting sleeve.

Press on valve stem seal by hand with special tool 11 6 380 BUSH as far as it will go.

Fig 4: Pressing Valve Stem Using Special Tool (11 6 380)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.