11 34 560 Replacing all valve stem seals (N63O1)

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Special tools required:

IMPORTANT: Risk of damage to sealing lip on valve stem seal.
Fit new valve stem seals only when all valves have been installed.

Necessary preliminary work:

Remove all VALVE SPRINGS .

Pull off valve stem seal (1) with special tool 11 1 480 .

Simultaneous turning and pulling will pull off the valve stem seal.

Fig 1: Pulling Off Valve Stem Seal Using Special Tool (11 1 480)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Lubricate valve stem with oil and insert valve.

Installation sleeve 11 1 380 is included in the delivery specification for the valve stem seals.

Fit special tool 11 1 380 .

Coat new valve stem seal (1) with oil and install.

Fig 2: Identifying Valve Stem Seal And Special Tool (11 1 380)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For use on the N63O1 engine, the special tool 11 6 380 must be re-machined according to the sketch with a 6.2 mm drill bit dia. to a depth of A = approx. 45 mm.

This modification has already been taken into account for reordering.

Fig 3: Re-Machining Special Tool (11 6 380) For Use On N55 Engine

Courtesy of BMW OF NORTH AMERICA, INC.

Manually press on valve stem seal as far as it will go with special tool 11 6 380 .

Graphic N63.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.