11 34 560 Replacing all valve stem seals (N63)

WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2017 BMW M6, 2017 BMW 650i xDrive, 2017 BMW 650i, 2017 BMW 640i xDrive, and 2017 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

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 .

Press special tool 11 6 370 onto the valve stem seal.

Withdraw valve stem seal by turning and simultaneously unscrewing special tool 11 6 370 .

Fig 1: Pressing Special Tool (11 6 370) Onto Valve Stem Seal

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 N63 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 .

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

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.