11 34 560 Replacing all valve stem seals (N63O1)

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: Pressing 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 remachined 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: Identifying Special Tool 11 6 380 Dimensions

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 .

NOTE: Illustrations shows N63 engine.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.