Mercedes-Benz GL450 Operator's Manual page 299

Controls in detail
Loading
Pull cover strip c out of groove until
you see screws b on each end of the
basic cross bar.
Turn screws b on both sides counter-
clockwise approximately 2 rotations.
Place the basic cross bar at designated
locations ( page 296) on roof rails.
On both sides, make sure the clamping
claws 5 lie flush against the roof rails.
If necessary pull out or push in the
clamping claws 5.
Tighten screws b. Observe a
tightening torque of 4 lb-ft (6 Nm).
The width of the clamping claws is
correctly adjusted.
Press cover strip c piece by piece into
groove of basic cross bar.
Install the basic cross bars as
described ( page 296).
298
Removing the basic cross bars
1 Key
2 Cover cap
3 Sticker FRONT (or REAR)
4 Screw for clamping claw
5 Clamping claw
Unlock cover cap 2 with key 1.
Remove cover cap 2.
Turn screws for clamping claws 5
counterclockwise until the basic cross
bars can be lifted from the roof rails.
Shortening the cover strip
The cover strips reduce the wind noise
caused by the basic cross bars. In order to
install add-on roof equipment, it may be
necessary to shorten the cover strips.
c Cover strip
Pull cover strip c out of groove.