11 33 050 Removing and Installing/Replacing All Cam Followers (N54)

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Special tools required:

11 4 480

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:

Remove cylinder head cover.
Remove inlet camshaft.
Remove 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. See 11 4 480 PLACEMENT BOARDS (2X)

Installation:

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

Fig 1: Identifying Sure Roller Cam Follower

Courtesy of BMW OF NORTH AMERICA, INC.

Remove HVCA element in direction of arrow.

Installation:

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. See 11 4 480 PLACEMENT BOARDS (2X)

Fig 2: Removing HVCA Element

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.