Rocker Arm Assembly: Service and Repair

11 33 050 Removing and installing or replacing all rocker arms (N54, N54T)

Special tools required:





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
^ Remove intake camshaft
^ Remove exhaust camshaft.





Detach roller cam followers (1) from hydraulic valve clearance compensating 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 hydraulic valve clearance compensating element in direction of arrow.

Installation note:
If the hydraulic valve clearance compensating elements are reused, they must be placed together with the roller cam followers in neat order if necessary in special tool 11 4 480.

Assemble engine.