11 34 560 Replacing All Valve Stem Seals (N54)

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Special tools required:

11 1 480
11 6 380

Necessary preliminary tasks:

Remove cylinder head.
Remove inlet camshaft.
Remove exhaust camshaft.
Remove roller cam follower.
Remove all valve springs.

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

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

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 N54 engine, special tool 11 6 380 must be remachined according to the sketch with a 10 mm dia. drill bit to a depth of B = approx. 23 mm. See 11 6 380 BUSH

This modification has already been taken into account for reordering.

Fig 2: Identifying Special Tool (11 6 380) Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Different diameters at valve stem.

All valve stem seals are color-coded.

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 Seals Color-Coded

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 as far as it will go. See 11 6 380 BUSH

NOTE: Illustrations show N46.

Fig 4: Identifying Special Tool (11 6 380) On Valve Stem Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.