11 34 560 Replacing all valve stem seals (N52K)
WARNING: This page is about a different variant/trim than selected.
Special tools required:
- 11 1 480
- 11 6 380
Necessary preliminary tasks:
- Remove cylinder head, see 11 12 100 Removing and installing cylinder head (N52K) .
- Remove intermediate lever, see 11 37 010 Removing and installing/replacing intermediate levers (N52K) .
- Remove eccentric shaft, see 11 37 005 Removing and installing/replacing eccentric shaft (N52K)
- Remove inlet camshaft, see 11 31 025 Removing and installing/replacing inlet camshaft (N52K)
- Remove exhaust camshaft, see 11 31 028 Removing and installing/replacing exhaust camshaft (N52K) .
- Remove cam followers, see 11 33 050 Removing and installing/replacing all cam followers (N52K)
Firmly press special tool 11 1 480 onto old valve stem seals.
Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480 .
Installation:
Insert all valves.
NOTE:
For use on the N52K engine, special tool 11 6 380
must be remachined according to the picture with a 10 mm dia. drill bit to a depth of B = approx. 23 mm.
This modification has already been taken into account for reordering.
This modification has already been taken into account for reordering.
IMPORTANT:
Different diameters at valve stem.
All valve stem seals are color-coded.
All valve stem seals are color-coded.
For 5 mm dia. valves, the valve stem seal is marked red or brown.
For 6 mm dia. valves, the valve stem seal is marked green or light green.
Installation:
Fit the mounting sleeves (plastic sleeves) contained in the delivery specification 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.
Assemble engine.