ILF 33/44/55 Installation Manual
Rev 1.1
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6. Place the mount tube in the predetermined position, keeping the given maximums and minimums
dimensions in mind. Support the mount tube using a rolling floor jack or a similar device to position
the mount tube and clamp plates. Make sure the mount tube is squared 90-degreed, vertically and
horizontally, to the truck frame. Use a
minimum of 8” overlap between the mount plates and truck
frame. Clamp mount plates to the chassis frame to prevent any misalignment before welding. Tack
weld mount plates to vehicle frame.
Recommendation: Add a support plate to the top of the mount plates, if needed, to tie liftgate mount
plates to the body stringer,
Fig. 17
.
NOTE: When the mount plate is welded on the chassis frame, the ground (electrical) from the
chassis is transferred to the liftgate through the weld.
90°
Support
Jacks
Wooden Spacer
Chassis Frame
Body Stringer
Wooden Spacer
Chassis Frame
Body Stringer
8.00" Overlap
Support Plate
(if necessary)
Mount Plate
3/16"
3" channels
Fig. 17
