2.
ATTENTION INSTALLERS:
Changes are made periodically to the installation procedure to comply with engineering
changes. To ensure proper liftgate operation, it is
VERY IMPORTANT
to read and understand
the installation instructions before attempting an installation. Installers also
MUST
read and
understand the liftgate’s Owner’s Manual before installing the liftgate, so they can operate the
liftgate safely as required during different stages of the installation process.
NEVER
perform a
modification on the liftgate, which is not specifically covered in this manual or which is
unauthorized by Thieman. Modifications may result in failure of the liftgate and may create
hazards for liftgate installers, operators, or maintainers. Serious damage, equipment failure, or
operator injury could result from improper installation. This equipment
MUST
have all decals
applied properly.
FAILURE
to apply all decals properly will
VOID
all warranties! Any installer
with questions or doubts should contact Thieman before proceeding.
NOTES:
1. All maximum mounting dimensions are shown with the vehicle empty; all minimum mounting
dimensions are shown with the vehicle loaded.
2. Check the bed height when vehicle is parked on a level surface.
3. Refer to figure 1 and table 1 for overall dimensions of liftgates and bed height ranges for
different models.
4. The TVLR series railgates are all level ride, which means when the vehicle is located on a
level surface, the rails should be perpendicular to the ground. When mounting, consideration
should be given to the platform position with the truck both empty and loaded. See figure 2
and 3.
NOTES:
1. All bed height ranges shown in table 1 allow installer to provide a minimum of 18" of ground
clearance by cutting off the lower end of the rail as needed unless otherwise stated. Rails
must NOT be cut more than 25" above the ground (Note: 25” measurement must be made
with truck unloaded. See Step 12 of Installation Instructions. On special orders, consult
factory as the allowable trim dimensions may vary from what is shown here).
2. Optional light covers in which the lights are below the cylinder housing will not allow the total
18" inches of ground clearance on standard bed models in the bed height range of 33-36".
TVLR 125/16/20/30
MODEL TYPE RAIL HEIGHT "A" FRAME WIDTH "B" BED HEIGHT ABOVE BED RANGE
RANGE
STANDARD 85 80 33-54 NA
STANDARD 85 90, 95, 100 33-56 NA
ABOVE BED 89 80 33-40 16-14
41-44 15-10
ABOVE BED 89 90, 95, 100 33-40 16
41-46 15-10
LOW BED 83 80 33-40 16-14
LOW BED 83 90, 95, 100 33-40 16
Table 1.
