May 2022
13
©2022-2023 Trinity Trailer Mfg., Inc
.
Closed/Box Frame Trucks
Figure 4- Bed Bracket (Closed Frames)
Installed.
1)
The bed mounted components will be
bolted to each side using pre-existing
holes in the bed frame rails. The
truck mounted components are bolted
to the rails of the truck frame.
Note:
holes will need to be drilled in the
truck frame rails.
2)
Attach
the truck bed mounts to the
truck bed with 2 grade 5, 5/8” bolts,
of the appropriate length. Secure
with 2 (one on each side) flat washers
and nyloc nuts.
Figure 5- Truck Mount Installed (Blue)
3)
Clamp one truck bracket to each of
the already installed bed brackets.
The truck brackets will be used as a
drill guide to put the mounting holes
in the truck frame.
4)
After the holes are drilled, mount the
truck bracket to the truck frame with
Grade 5, 5/8” bolts of an appropriate
length. Secure with flat washers (one
on each side) and nyloc nuts.
Figure 6- Drill guide to complete Closed Frame
Mount.
5)
The truck bracket is used as a drill
guide to complete the mounting holes
in the bed bracket.
6)
Fasten the bed bracket to the truck
bracket with Grade 5, 5/8” bolts of an
appropriate length. Secure with a flat
washer on each side of the bracket,
and secure with a nyloc nut.
7)
Tighten all bolts sufficiently tight
that the assembly does not shift.