6.
Step 10
If liftgate installation is on a flatbed vehicle, fabricate load bearing support tubes and
diagonal braces as shown in Figure 10. Square the support tubes with the bed and
perpendicular to the ground as shown, and weld braces to vehicle body and support
tubes. Then weld liftgate rails to support tubes on both the inside and outside corners
of each rail.
Step 11
Weld cylinder housing to rear of body payload area. Note: Some models have plastic
oil reservoirs on their power units. Necessary precautions must be taken during
welding to prevent heat damage to reservoirs on these models. Recheck all welds
and remove forklift or crane from liftgate. Remove lifting crossbar from rails and grind
rails smooth.
Step 12
If possible, install diagonal braces from the lower part of the rails to the vehicle body
(see Figure 11). On lower bed heights, the rails may need trimmed to maintain an
adequate 18" of ground clearance. NEVER trim the rails more than 25" from the
ground OR so high that lower nylon wear pads drop, EVEN PARTIALLY, out of rails,
which may cause liftgate to jam up or cause damage to liftgate (see Figure 11). This
25" maximum dimension MUST be measured on an unloaded truck, or this dimension
will be exceeded when the truck is unloaded. (On special orders, consult factory as
the allowable trim dimensions may vary from what is shown here).
