Product Manual

www.piercearrow.us 5
1. REMOVE WIRING AND ATTACHMENTS
• Remove all aachments holding the sill and
bed to the truck frame including electrical
wiring, fuel, hydraulic or air lines.
• All wires must be supported by the truck
frame.
2. CHASSIS SHORTENING & REAR
HINGE PLACEMENT
• Shorten the chassis in order to create as much
overhang as possible. The more overhang past
the hinges, gives a counter lever eect and
makes, in essence, the dump kit stronger.
• Cut the frame at the 45 degree angle so
that there is hinge pin clearance above the
cut (g. 1).
• There should be enough metal to tack weld
the frame hinge to the truck chassis frame.
• Connect the sill hinge to the tack welded
frame hinge using sha D. Secure with 7/32”
x 2 1/2” roll pins (g. 2).
NOTE: Only weld at the rear of the chassis
frame. Do not weld anywhere forward of the
rear spring hangers in order to prevent cracks
from developing in the frame and possible
weak spots during the welding process.
NOTE: From the front rear spring hanger to
the cab all parts will be bolted to the frame.
3. SCISSOR ASSEMBLY PLACEMENT
• Now that the frame hinge locaon is
determined, the scissor assembly (pre-
assembled) placement must be evaluated.
Measure from the frame hinge pin toward
the cab. Mark 5’ 8” and 6” 6”. The scissor
assembly crossmember and frame L bracket
can be placed within this area. Keep in mind
an 8’ bed must overhang at least 12” from the
frame hinge to reach full capacity on a 7.5 T
kit (g. 3).
NOTE: Desired bed height and li capacity
are determined by the placement of the
crossmember. Chassis construcon may
dictate crossmember locaon.
• Bolt the frame L brackets to the chassis frame
at the center of your measurement using
grade 8, 1/2” bolts and self locking nuts (g.4).
NOTE: The front ller hose may help
determine scissor locaon and bed height.
4. BED HEIGHT - CHEVY INSTALLATIONS ONLY
• Installaons to a Chevy may require several
consideraons. The locaon of the scissor
assembly will be determined by the front ller
hose.
• Also, the thickness of the hose will require
that the bed be installed with two or more
inches of clearance.
5. CROSSMEMBER MODIFICATIONS
• The scissor assembly crossmember comes
extra long to t various chassis widths.
• Cut the crossmember with enough room to
run a welding bead.
• Tack weld the crossmember to the frame
L bracket. Do not weld the crossmember
directly to the chassis frame (g. 5).
5’ 8” 6’ 6”
5’ 8” 6’ 6”
12”
Installation Instructions
(g. 1)
(g. 2)
(g. 3)
(g. 4)
(g. 5)
frame