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Home >> BMW >> 2017 >> 650i 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1130 (Engine - Pistons, Piston Rings, Balancing Shafts, Rocker Arms, Intake / Exhaust Valves, Valve Springs, Valve Stem Seals, Variable Valve Lift Control System (VALVETRONIC) - Repair) >> Rocker Arms >> N52 Engine >> 11 33 050 Removing and installing/replacing all rocker arms (N52)

11 33 050 Removing and installing/replacing all rocker arms (N52)

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Special tools required: 

Necessary preliminary work: 

IMPORTANT: Rocker arms (1) are divided into bearing categories.
The tolerance classes are marked according to the graphic in numbers from 1 to 5.
Already used rocker arms (1) may only be reused in the same position.

Detach rocker arms (1) from HVCA element and remove.

Fig 1: Identifying Rocker Arm
G09923789Courtesy of BMW OF NORTH AMERICA, INC.

Set down all rocker arms (1) in neat order in special tool 11 4 480 .

Installation note: 

Before installing exhaust camshaft or intermediate levers, make sure rocker arms (1) are correctly seated.

Remove HVC element (1) in direction of arrow.

Installation note: 

If hydraulic valve clearance compensating elements (1) are reused, they must be placed together with rocker arms in neat order in special tool 11 4 480 .

Fig 2: Removing HVC Element
G09923790Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

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