Diamondback 270 User manual

If you are also installing a Cross Bin, do so now. Refer to page 2 of
v Cross Bin Installation Guide for details.
You should mount the included bulkhead prep kit prior to installing
the cover. Refer to the Bulkhead Prep Kit Installation Guide for details.
Place the cab & T panels
assembly on the front half
of the bed so its leading
edge lines up with the
outside edge of the
bulkhead.
1
MOUNT THE COVER
Loosely affix the T panel to the
truck by finger-tightening two
cap clamps under both side
ends of the T panel.
2
Lower the tail panel into the
closed position.
4
3Attach the tail panel by angling it 90° from the bed rails, sliding its
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 SECOND
90°
Center the cover side to side.
5
6Confirm the leading edge of the cover still lines up with the outside
edge of the bulkhead.
Place the two remaining cap clamps under
the nose of the T panel, their bottom
jaws gripping the underside of the
7
8Tighten all six cap clamps with a 9/16" socket.
Road vibration can loosen your clamps. Retighten them after
100 miles. Check them every time you haul on top.
INSTALLATION GUIDE CVR-270.6
DiamondBackCovers.com / 800 935 4002
Important installation information
IMPORTANT!
Keep an eye out for these icons:
Normal install time
75 minutes
Tips to assist installation
Helpful Hints
270
Nissans Without Utili-Tracks
CONTINUED ON REVERSE >
9/16"
Socket
7/ 1 6"
Socket
Utility Knife
Ratchet Wrench
Cap Clamps (6)
Tail Panel
Cab & T Panels Assembly
1/8" Hex
Key
Bed-Rail
Edge Trim (2)
Gas Springs (6)
PARTS INCLUDED: TOOLS REQUIRED:
PARTS INCLUDED: TOOLS REQUIRED:
PRE-INSTALLATION NOTES:

Adjust the lock-rod length and retighten the set screws so that
with the lock handle in the open position, the rod tips clear the
bed rails, and with the handle in the closed position, the rod tips
do not strike the bed walls.
12
7/16" socket
Using the access panels is easiest when
you press down as you open or close them.
For best weather protection, have a second person
press down on the cover while you adjust the lock rods.
Position the lock rods tight
against the underside of
the bed rails so that they’ll
draw the panels down and
compress the weather-
strip. Tighten the rod guide
brackets with a 7/16"
socket.
13
15 Double-check all three panels to ensure they open, close, lock &
seal correctly. If at any point the weatherstrip does not touch
the bed rails, adjust the position of the lock rods.
Your panels should be difficult to operate at first. Leave them
closed as much as possible for 3–4 days to break in the weath-
erstrip. After that period, you should find that the panels open
and close without difficulty.
14 Repeat steps 11–13 for the forward cab-panel lock rods so that:
A. with the lock handles in the open position, the rod tips
clear the bulkhead angle,
B. with the handles in the closed position, the rod tips do not
strike the bulkhead, and
C. in the closed position, they are tight against the underside
of the bulkhead angle, drawing the panels down & com-
pressing the weatherstrip.
The rearward cab-panel lock rods come pre-adjusted tight to
the T-panel gutters. You need only adjust the forward lock rods.
ATTACH THE GAS SPRINGS
16 If you are also installing a Side Bin, do so now. Refer to the Side Bin
Installation Guide for details.
17 Attach the four weaker gas springs to the cab-panel ball studs and
the two stronger gas springs to the tail-panel ball studs.
You’ll find the gas spring strength printed on the sides of the barrels.
To avoid premature failure of your gas springs, attach them
barrel up, shaft down.
18 Leave the cover closed and locked for
24 hours to allow the weatherstrip
adhesive, which is pressure-sensitive,
to fully cure.
Adhesive cure time
24 hours
Affix the edge trim to the painted metal only,
behind the plastic bed liner or bed rail cap.
FEBRUARY 2017
MAY 2017
DiamondBackCovers.com APRIL 2018
SET THE LOCK RODS
9If plastic extends
beyond the bottom of
the vertical face of the
truck’s metal bed rails,
trim a two-inch length of it to
flush with the bed rail’s
bottom edge at both points
under the tail panel
where a lock rod will
pass under the rails.
Peel the red adhesive backing from the edge
trim pieces. Affix them to the bed rail at both
points where a rod will pass underneath, the
curl of their j’s touching the rail’s bottom edge.
10
Using a tool to widen the curl of the ‘j’ can make this step easier.
plastic
metal
Loosen the set screws on the
tail-panel lock-rod linkages.
11
1/8" hex key