Rocker Arm Assembly: Service and Repair

11 33 050 - Removing and installing/replacing all rocker arms (N51)





Special tools required:
- 11 4 480 11 4 480 Oddments Tray






Necessary preliminary tasks:
- Remove cylinder head cover Service and Repair.
- Remove intermediate lever Removing and Installing/Replacing Intermediate Levers.
- Remove exhaust camshaft Removing and Installing/Replacing Exhaust Camshaft.





Important!
Rocker arms (1) are divided into bearing categories.
The tolerance classes are designated as illustrated with numbers from 1 to 5.
Already used rocker arms (1) may only be reused in the same position.

Detach roller cam followers (1) from HVCA element and remove.

Set all roller cam followers down in special tool 11 4 480 in a tidy and orderly fashion.

Installation:
Before installing exhaust camshaft and intermediate lever, make sure roller cam followers are correctly seated.





Remove HVCA element in direction of arrow.

Installation:
If the HVCA elements are to be reused, set them down in special tool 11 4 480 in a tidy and orderly fashion with the roller cam followers.





Assemble engine.
Check function of DME; if necessary, readjust uniform mixture distribution.