11 34 560 Replacing all valve stem seals (N54)

Special tools required:

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove INTAKE CAMSHAFT .
Remove EXHAUST CAMSHAFT .
Remove ROLLER CAM FOLLOWER .
Remove all VALVE SPRINGS .

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 note:

Insert all VALVES .

Fig 1: Detaching Valve Stem Seal

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NOTE: For use on the N54 engine, special tool 11 6 380 must be re-machined according to the sketch with a 10 mm drill bit dia. to a depth of B = approx. 23 mm. This modification has already been taken into account for reordering.

Fig 2: Identifying Re-Machining Dimension For 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.

Fig 3: Identifying Valve Stem Seal

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

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

Installation note:

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

Lubricate mounting sleeve.

Press on valve stem seal with special tool 11 6 380 by hand up to stop.

NOTE: Illustration shows N46 engine.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.