MOUNT THE COVER
Place the cab & T panels
12
assembly on the front
half of the bed so
its leading edge
lines up with
the outside
edge of the
bulkhead.
Loosely affix the T panel to the truck by finger-tightening two
13
cap clamps under each of the three ends of the T panel, the
clamps' bottom jaws under the bed rails at the two side ends
and under clamp bracket at the nose.
SET THE LOCK RODS
Peel the red adhesive backing from
18
two of the pieces of edge trim and
affix one as far up as possible onto
the top rim of each of the factory holes in the
bed walls under the tail panel. (See step 20
illustration for location.)
There may be plastic plugs in the
factory holes. Remove them.
Loosen the set
19
screws on the
tail-panel lock-rod
linkages.
With the lock handle in the open position, adjust the length of the lock
20
rods so that their tips stop about 1/4" short of the factory holes.
ATTACH THE GAS SPRINGS
If you are also installing a Side Bin, do so now. Refer to the Side Bin
23
Installation Guide for details.
Attach the 60-lb. gas springs to the cab-panel ball studs and the
24
two 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 locked for 24 hours
25
to allow the weatherstrip adhesive, which is
pressure-sensitive, to fully cure.
DiamondBackCovers.com
1/8" hex key
Attach the tail panel by angling it 90° from the bed rails, sliding its
14
driver-side, loop-shaped hinge knuckle fully onto the correspond-
ing center-panel hinge pin, then dropping its passenger-side,
C-shaped hinge knuckle fully onto its corresponding pin.
FIRST
Lower the tail panel into the closed position.
15
Center the cover side to side.
16
Tighten the cap clamps with a 9/16" socket.
17
Road vibration can loosen your clamps. Retighten them after
100 miles. Check them every time you haul on top.
With the lock handle in the closed posi-
21
tion, position the lock rods tight against
the top rims of the factory holes in the
bed wall so that they'll draw the panels
down and compress the
weatherstrip. Tighten the
rod guide brackets with a
7/16" socket.
For best weather protection,
have a second person press down on the cover
while you adjust the lock rods.
Repeat steps 19–21 for the forward cab-panel lock rods so that:
22
A. with the lock handles in the open position, the rod tips
clear the striker brackets,
B. with the handles in the closed position, the forward rod
tips do not strike the bulkhead,
C. in the closed position, they're tight against the underside
of the striker brackets, drawing the panels down & com-
pressing the weatherstrip, and
D. the first bend in the rods points downward.
90°
SECOND
FULLY MATED
7/16" socket
MAY 2017
NOVEMBER 2018
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