MOUNT THE COVER
Close the tailgate. Place the cover onto the cargo bed so that the
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weatherstrip along the cover's rear angle is firmly compressed
against the inside edge of the tailgate.
Center the cover side to side.
13
Open the tailgate. At the rear of the bed, mark drill locations on
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both bed walls using the mounting-bracket slots as a template.
Cheat these marks slightly
lower than the vertical center
of the slots.
ADJUST THE LOCK RODS
Use the 1/8" hex key to loosen
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the set screws on the linkages
of the forward lock rods.
You can leave your rearward
lock rods alone. They come
pre-adjusted from the factory.
Adjust the length of the lock rods & retighten the set screws so that:
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A. with the lock handle in the open position, the rod tips clear the
striker brackets,
B. with the handle in the closed position, the rod tips do not strike
the bulkhead, and
C. the rods point downward.
ATTACH THE GAS SPRINGS
Attach the gas springs to the ball studs.
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To avoid premature failure of your gas springs, attach them barrel up, shaft down.
Leave the cover closed and locked for 24 hours to allow the weatherstrip
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adhesive, which is pressure-sensitive, to fully cure.
DiamondBackCovers.com
1/8" hex key
24 hours
Adhesive cure time
Remove the cover.
15
Drill the marks using a 3/8" bit.
16
Repeat steps 5–8 to insert
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rivet nuts into each hole.
Repeat step 12.
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Attach the front of the cover to
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the clamp bracket using the
cap clamps.
At rear, insert a hex bolt through a plain
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washer, through each bracket slot, and into
each rivet nut. Tighten with a 7/16" socket.
To get the weatherstrip compression necessary for its adhesive
to cure and for the cover to keep out the weather, have a second
person press down on the rear of the cover while you're attaching
the mounting brackets.
Position the lock rods tight
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against the underside of the
striker brackets (forward) and
T-panel gutter (rearward) so
that they draw the
panels down and
compress the
perimeter weather-
strip. Tighten the rod
guide brackets with a
7/16" socket.
To get the weatherstrip compression necessary for its adhesive to
cure and for the cover to keep out the weather, have a second
person press down on the cover while you're adjusting the lock rods.
If there isn't enough travel in the forward rod guide bracket to
position the rod so that it presses against the striker, reshape
the striker's V bend with pliers.
Double-check both panels to ensure they open, close, lock & seal
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correctly. If at any point the weatherstrip does not touch the bed
rails, readjust the lock rods and mounting brackets as needed.
Operating the access panels is easiest when
you press down as you open or close them.
7/16" socket
MAY 2017
OCTOBER 2018
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