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2011 Ford Expedition Owner's Manural wrote:
LUGGAGE RACK
Your vehicle is equipped with a roof
rack for transporting items on the
exterior of the vehicle. The
maximum recommended load to be
carried on the roof rack is 200 lb
(90 kg), evenly distributed. The
cross-bars can be adjusted by using
the thumbwheels at each end. Use
the tie-down loops on the
thumbwheels to secure load.
To adjust the position of the
cross-bar (if equipped):
1. Loosen the thumbwheel at both
ends of the cross-bar (both
cross-bars are adjustable).
2. Slide the cross-bar to the desired
location.
3. Firmly retighten the thumbwheels
at each end of the cross-bar.
Be sure to check that the thumbwheels are tight each time load is added
or removed from the roof rack, and periodically while traveling.
Always ensure that the load is secure before traveling.
Ford Motor Company recommends loading the roof rack only when
equipped with (optional) crossbars, to avoid unintended damage to the
roof panel.
