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

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ENGINE 272, 273

CAMSHAFT, CAMSHAFT ADJUSTMENT

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

Counterhold camshafts at the rear with a Torx screwdriver bit using a suitable tool to unfasten and fasten 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: Center Valves - Right Cylinder Head
Courtesy of MERCEDES-BENZ USA

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: Center Valves - Left Cylinder Head
Courtesy of MERCEDES-BENZ USA