SuperRail Installation Inst. Rev. 2/23/2003 Page 5
General Installation Instructions
3
General Installation Instructions
3
General Installation Instructions
NOTE:
Refer to the Specific Vehicle’s Figures
and Reference information for all references
made herein
. The location of the Specific
Vehicle can be found by referring to the Table
of Contents.
Truck Preparation
1. Check part quantities using the
Parts List
for the
specific vehicle type.
2. Block vehicle wheels. Some vehicles may require
you to raise the rear of the truck in order to make
it easier to drill for installing the Mounting
Brackets on the truck frame.
3. You may wish to remove the wheels, to give
yourself greater working room.
4. At this point, the bed should be laid out and
marked for drilling using either the LAYOUT
METHOD or the TEMPLATE METHOD.
Marking
Bed for Drilling (layout
method)
1. For layout using the Template method, see
Layout
(Template Method)
on next page.
2. See
Truck Bed Layout Dimensions
table
pg. 7
for the dimension values for items
A - D
located
in the ‘
LAYOUT METHOD’
illustration.
Measure and mark from the back of the bed
forward the values for
A
and
B
. Do this at any
point on both sides of the bed.
3. Draw a line across the bed from mark to mark.
4. Find the centerline of the bed. Draw a line down
the middle of the bed from front to rear. See
Figure 5 on pg. 7
. Center the measurement of
C
across the centerline at the front most line you
made in step 2, and mark the measurement on
each side (parallel to the centerline). Center the
measurement of
D
for the rear most line made in
step 2, and again mark the measurement on each
side (parallel to the centerline). This will locate
the 4 drill holes.
5. Go to your truck’s
SPECIFIC LISTING
(listed
in
the Index on pg.2) and perform the steps listed
in
PART I
. The truck
Specific Listings
begin
after
page 7
of these instructions
.
Drilling the Bed
1. After you have removed the Mounting Brackets,
use a
1 3/4”
hole saw, centered over the
1/16”
pilot hole, cut the bed for the mounting posts.
2. De-bur inside the holes, then use a paint stick to
touch up the edges.
3. Re-install the Mounting Brackets and secure those
that have no existing mounting holes in a
temporary fashion, using ‘C’ clamps. Those that
have holes, secure by lightly attaching with bolts
( tighten sufficiently to where the Mounting
Brackets lay flat against the truck frame).
4. Install the Mounting Posts through the bed into
the Mounting Bracket Post Holders. Rotate the
Posts a quarter turn. (
See the illustrations in the
truck Specific Listings
).
NOTE:
The Mounting Post should be tall enough
to clear most bed mats. Vehicles using bed liners
may require taller Mounting Posts to seat into the
Post Holders properly
. A Tall Mounting Post (1”
taller) is available under part # 330705. Four posts
are required for installation.
5. Remove the Base Rails from the shipping carton,
leaving the Base Rail Extensions loose to allow
lateral movement as you place the Rail assembly
over the Mounting Posts. See drawing on next
page.
6. Install the Base Rails in the bed of the truck, and
center the Base Rails between the Base Rail
Mounting Posts. Finger tighten the Base Rail
mounting Bolts.
7. Set the 5
th
Wheel Hitch on the Base Rails, and
align the Hitch Assembly with the Base Rail
mounting holes, using a drift pin punch to aid
your alignment. Install the Mounting Pins from
the inside. Then install the Pin Clips, to secure the
Hitch assembly to the Base Rails. See drawing on
next page.
8. Center the Hitch assembly within the truck bed,
from side to side. You might need to use a rubber
mallet to get the unit to move while centering.
Once the unit is centered, tighten the Base Rail
Extension Bolts to 31 ft. lbs..
9. The 5
th
Wheel Hitch, and the Base Rails, must be
removed to verify that the Mounting Post can be
inserted and removed freely, without binding. A
slight adjustment might be required to obtain un-
