Rocker Arm Assembly: Service and Repair

11 33 050 - Removing and installing/replacing all cam followers (N54)





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





Important!
Rocker arms (1) are divided into bearing categories.

The tolerance classes are identified in numbers from 1 to 6.

Already used rocker arms (1) may only be reused in the same position.

Classification is not required on the N54 engine. All numbers from 1 to 6 can be optionally installed as a replacement.





Necessary preliminary tasks:
- Remove cylinder head cover Service and Repair
- Remove inlet camshaft Removing and Installing/Replacing Inlet Camshaft
- Remove exhaust camshaft Removing and Installing/Replacing Exhaust Camshaft.





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

Set down roller cam followers in tidy and orderly fashion; if necessary, set down in special tool 11 4 480.

Installation Note:
Before installing exhaust and inlet camshafts, make sure roller cam followers are correctly seated.





Remove HVCA element in direction of arrow.

Installation Note:
If the HVCA elements are reused, they must be placed together with the cam followers in neat order if necessary in special tool 11 4 480.





Assemble engine.