ADJUST THE LOCK RODS
Note: If your bed rail lips have sharp edges, they
might tear the rubber caps on the end of the
lock rods. To protect the end caps, peel the red
adhesive backing from the bed rail edge trim
pieces and place them on the bed rail lips.
Loosen the set screws on the
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tailgate panel lock rod linkages.
Adjust the length of the lock rods and retighten the set screws so that:
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A. with the lock handle in the open position, the rod tips clear the
bed rails,
B. with the handle in the closed position, the rod tips do not strike
the bed walls, and
C. the rods point downward.
Repeat steps 9 through 11 for the cab-panel lock rods so that:
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A. with the lock handles in the open position, the rod tips clear the
striker brackets (forward) and T-panel gutter (rearward),
B. with the handles the closed position, the forward rod tips do not
strike the bulkhead, and
C. the rods point downward.
ATTACH THE GAS SPRINGS
Note: If you are also installing a Single-Side Bin, do so now. Refer to to the Single-Side
Bin Installation Guide for details.
Attach the 60-lb. gas springs to the cab-panel ball studs and
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the stronger gas springs to the tailgate-panel ball studs.
You'll find the strength of the gas springs printed on the
sides of the barrels.
To avoid premature failure of your gas springs, attach
them barrel up, shaft down.
Leave the cover closed and
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locked for 24 hours to allow
the weatherstrip adhesive,
which is pressure-sensitive,
to fully cure.
WWW.DIAMONDBACKCOVERS.COM
1/8" Hex Key
Note: If you have a plastic bed liner or
bed rail caps that extend beyond the bed
rail lips, trim the plastic so the lock rods
can touch the bed rail lips.
Tighten the rod guide brackets
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after positioning the lock rods
tight against the bed rail lips so
that closing them draws the
tailgate panel down and
compresses the perimeter
weatherstrip.
To get the weatherstrip compression
necessary for its adhesive to cure and the
cover to keep out the weather, have a
second person press down on the cover
while you're adjusting the lock rods.
Double-check all three 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,
adjust the position of the lock rods.
To ensure the best weatherstrip adhesion, leave your cover and tailgate
closed and locked for 24 hours after you've made your final adjustments.
Your panels should be difficult to operate at first. Leave
them closed as much as possible for 3–4 days to break in
the weatherstrip. After that period, you should find that
the panels open and close without difficulty.
7/16" socket
Operating the access
panels is easiest when
you press down as you
open or close them.
JULY 2015
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