Measure the distance at point A (on top of the cover (C) near the cab). Then measure the distance at points B & C (above
each clamp). They must measure the same +/- 1/16” (1.6 mm) as at point A. It is important that the rails are parallel. If
they are NOT, proceed to step 15. If the measurements are correct, tighten each stand-o bolt on each clamp, so that there
is approximately a 2 degree upward tilt to each rail, as shown in the section below. Then proceed to step 16.
Using a 9/16” wrench, tighten the clamps (G). It is important to push down on the passenger side cover rail (A) while
tightening. The pushing down of the rail will position the rail best to minimimze water intrusion, but Do Not push down too
close to the top of the tailgate because it will interfere with opening and closing of the tailgate. Do this on the driver side cover
rail (B) as well.
13
14
Remove the clamps (G) and turn the white adjustment screws with the 6mm Allen wrench (J) to move the rails.
One complete turn = 1/16” (1.6 mm). Turn both screws. When properly adjusted, reposition and tighten the clamps as in
steps 12-13, then proceed to step 16.
15
Tighten the
clamp bolts
to 6.7 ft/lbs
(9.1 Nm)
BC
A
Measurements are taken
from the top inside of the rails
REAR SECTION
If the rails measure to be too close together,
turn the screws counter clockwise.
If the rails measure to be too far apart,
turn the screws clockwise.
REAR SECTION
Adjustment
screw Truck bed
rail
Retrax • 917S. 46th St., Grand Forks,ND58201 • 800-206-4070 © Retrax Holdings,LLC, 20234000-148 Rev. 9-19-23
Approximately
2°
Stand-o
bolt
NOTE: Due to variations in vehicle designs, the clamps may fit dierently on your truck than on our test vehicles.
Retrax is not responsible for cover-to-vehicle installation, nor is Retrax liable for any damages resulting from
attachment, installation, or use.
Jam nut
Tighten the
jam nuts to:
6.7 ft-lb
9,1 N-m
Tailgate
Contacting/interfering with the tailgate
Tailgate
Small gap between the end cap & tailgate
