Valve Guide Seal: Service and Repair

11 34 560 - Replacing all valve stem seals (N62)





Special tools required:
- 11 1 380 11 1 380 Assembly Sleeves
- 11 6 370 11 6 370 Puller
- 11 6 380 11 6 380 Bush

Preliminary tasks are described in Disassembling and assembling cylinder head Disassembling and Assembling Cylinder Head (N62/N62TU).





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

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





Installation:
Lubricate valve stem with oil and insert valve.

Fit special tool 11 1 380 11 1 380 Assembly Sleeves .

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





Note:
For use on the N62 engine, special tool 11 6 380 11 6 380 Bush must be remachined in accordance with the illustration with a 6.2 mm dia. drill bit to a depth of A = approx. 45 mm.

This modification has already been taken into account for reordering.





Press on valve stem seal with special tool 11 6 380 11 6 380 Bush by hand as far as it will go.