11 34 560 Replacing All Valve Stem Seals (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

For the following special tools, refer to ENGINE- SPECIAL TOOLS (N52K) .

11 1 480
11 6 380

Necessary preliminary tasks:

Remove cylinder head. See 11 12 100 REMOVING AND INSTALLING CYLINDER HEAD (N52K) .
Remove intermediate lever . See 11 37 010 REMOVING AND INSTALLING/REPLACING INTERMEDIATE LEVERS (N52K) .
Remove eccentric shaft . See 11 37 005 REMOVING AND INSTALLING/REPLACING ECCENTRIC SHAFT (N52K) .
Remove inlet camshaft . See 11 31 025 REMOVING AND INSTALLING/REPLACING INLET CAMSHAFT (N52K) .
Remove exhaust camshaft. See 11 31 028 REMOVING AND INSTALLING/REPLACING EXHAUST CAMSHAFT (N52K) .
Remove cam followers . See 11 33 050 REMOVING AND INSTALLING/REPLACING ALL ROCKER ARMS (N52K) .

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: Identifying Special Tool 11 1 480 Onto Old Valve Stem Seals

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For use on the N52K engine, special tool 11 6 380 must be remachined according to the picture with a 10 mm 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)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Different diameters at valve stem.
All valve stem seals are color-coded.

For 5 mm dia. valves, the valve stem seal is marked red or brown.

For 6 mm dia. valves, the valve stem seal is marked green or light green.

Fig 3: Identifying Valve Stem Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Fit the mounting sleeves (plastic sleeves) contained in the delivery specification on the valve stem end.

Lubricate mounting sleeve.

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

Fig 4: Identifying Special Tools (11 6 380)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.