11 34 560 Replacing All Valve Stem Seals (N51)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 11 1 480
- 11 6 380
For the following special tools, refer to ENGINE - SPECIAL TOOLS (N51) .
Necessary preliminary tasks:
- Remove cylinder head . See 11 12 000 REMOVING AND INSTALLING OR SEALING CYLINDER HEAD COVER (N51) .
- Remove intermediate lever . See 11 37 010 REMOVING AND INSTALLING/REPLACING INTERMEDIATE LEVER (N51) .
- Remove eccentric shaft . See 11 37 005 REMOVING AND INSTALLING/REPLACING ECCENTRIC SHAFT (N51) .
- Remove inlet camshaft . See 11 31 025 REMOVING AND INSTALLING/REPLACING INLET CAMSHAFT (N51) .
- Remove exhaust camshaft . See 11 31 028 REMOVING AND INSTALLING/REPLACING EXHAUST CAMSHAFT (N51) .
- Remove roller cam follower . See 11 33 050 REMOVING AND INSTALLING/REPLACING ALL ROCKER ARMS (N51) .
Firmly press special tool 11 1 480 onto old valve stem seals. See Fig 1.
Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480.
Installation:
Insert all valves . See 11 34 552 REMOVING AND INSTALLING OR REPLACING ALL VALVES (N51) .
NOTE:
For use on the N51 engine, special tool 11 6 380 must be remachined according to the sketch with a 10mm dia. drill bit to a depth of B = approx. 23 mm. See Fig 2. This modification has already been taken into account for reordering.
IMPORTANT:
Different diameters at valve stem.
Valve dia. 5 mm: valve stem seal is red or brown.
Valve dia. 6 mm: valve stem seal is green or light green.
Installation:
Fit the mounting sleeves (plastic sleeves) supplied in the spare part on the valve stem end
Lubricate mounting sleeve.
Press on valve stem seal by hand with special tool 11 6 380 as far as it will go. See Fig 4.
Assemble engine.