Loosen/tighten the center valves - AR05.20-P-7201-06VA

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Camshaft, camshaft adjustment

Number	Designation		Engine 272	Engine 273
BA05.20-P-1009-02A	Center valve of pulse wheel/camshaft adjuster at camshaft	Nm	145	145

Counterhold the camshafts at the rear when loosening/tightening the center valves. Before installing, the center valves must be lubricated with oil on the contact surfaces with the pulse wheels.

Center valves of right cylinder head

Loosen the center valves in the direction of the arrow.
Tighten the center valves against the direction of the arrow.

Fig 1: Identifying Center Valves Loosening And Tightening Direction - Right Cylinder Head
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Center valves of left cylinder head

Loosen the center valves in the direction of the arrow.
Tighten the center valves against the direction of the arrow.

Fig 2: Identifying Center Valves Loosening And Tightening Direction - Left Cylinder Head
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.