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11 33 050 Removing and installing/replacing all cam followers

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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.
A classification is not necessary in the N54 engine; in the event of replacement, all numbers from 1 to 6 can alternatively be installed.

Necessary preliminary tasks: 

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.

Fig 1: Installing Roller Cam Follower On HVCA Element And Valve
G05501764Courtesy of BMW OF NORTH AMERICA, INC.

Remove HVCA element in direction of arrow.

Installation note: 

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

Fig 2: Removing HVCA Element
G05501765Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.