BMW 7 Owners & Service Manuals

BMW 7 Series: Replacing All Valve Stem Seals (N63)

Notes

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.

Valves With Springs
Fig. 299: Pressing Special Tool 11 6 370 Onto Valve Stem Seal

Installation note: Lubricate valve stem with oil and insert valve.

Installation sleeve 116380 is included in the delivery specification for the valve stem seals.

Fit special tool 116380.

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

Valves With Springs
Fig. 300: Identifying Valve Stem Seal And Special Tool 11 6 380

NOTE: For use on the N63 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.

Valves With Springs
Fig. 301: Identifying Special Tool (11 6 380)

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

Valves With Springs
Fig. 302: Pressing On Valve Stem Seal

Assemble engine.

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