2010 Mercedes GL-Class Owner's Manual - Page 200
2010 Mercedes GL-Class Manual
Page 200 highlights
198 Loading and storing i Markings E are located on the inside of each roof rail, indicated by the white lines in the illustration. Controls in detail : Key ; Cover cap = Sticker FRONT (or REAR) ? Screw for clamping claw A Clamping claw ? Screw for clamping claw A Clamping claw F Roof rail X The front and rear crossbars are of different lengths. Please pay close attention to stickers = FRONT and REAR on the crossbars. X Unlock cover cap ; with key :. X Remove cover cap ;. Sticker = indicating the location, FRONT or REAR, becomes visible. X Turn screw ? counterclockwise with the included hex key until clamping claw A is wide open. B Front crossbar C Rear crossbar D Gaps E Markings F Roof rails X Make sure clamping claw A lies flush against the inside of roof rail F as shown in the illustration. If necessary, adjust clamping width of crossbar (Y page 199). X Slightly tighten screw ? on both sides by turning it clockwise. X Place rear crossbar C on roof rails F in such a way that the clamping claws reach into gaps D (Y page 198) on the roof rails. X Make sure clamping claw A lies flush against the inside of roof rail F as shown in the illustration (Y page 198). If necessary, adjust clamping width of crossbar (Y page 199). X Slightly tighten screw ? on both sides by turning it clockwise. X On the front and rear crossbars tighten screws ?. Observe a tightening torque of 4 lb-ft (6 Nm). G Warning! Place front crossbar B between markings E on roof rails F. Have the tightening torque checked after mounting the crossbars. The screws could come loose if they are not tightened to a torque of 4 lb-ft (6 Nm).