Ford F-150 2010 Owner's Manual page 122

Driver Controls
Cross bars: Aluminum cross bars with T-slot channels in all four sides,
and a latch mechanism that allows the end supports to snap over the
existing cleats. Cross bars are rated to hold loads up to 100 lb (45 kg)
load evenly distributed between the two crossbars, and the T-slots are
sized to accept industry-standard roof rack accessories.
• To remove cross bar, lift handle on each side and lift end support
shroud off of the cleat.
• To install cross bar, align cleats directly across from each other on the
same rail (upper or lower). Then place crossbar end support onto
cleat and press down on each side until the latch handle cycles up and
then press the handle down to secure (pull up on the bars to ensure
they are securely attached).
• To install accessories into T-slots, remove cross bar and turn upside
down, then find the slip joint end, indicated with an arrow embossed
on the bottom of the support. Using a T25 Torx driver, remove two
Torx head bolts from bottom, and slide end support off of aluminum
extrusion. Insert accessory into desired T-slot, and install end support.
When tightening Torx head bolts, hand tightening with a Torx driver is
sufficient, DO NOT over torque by using a ratchet.
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