INSTALLATION INSTRUCTIONS
5
STEP 6: INSTALLING CLAMPS
HARDWARE USED:
ADJUSTABLE CLAMP SHIM
ASSEMBLY x 4
PLASTIC SHIM x 4
FOWARD RAIL SPEED
CLAMP ASSEMBLY x 2
(Foward -nearest the truck
cab- speed clamp assembly
uses the shorter pivot arm)
REAR RAIL SPEED
CLAMP ASSEMBLY x 2
(Rear -nearest the tailgate-
speed clamp assembly
uses the lomger pivot arm)
PIC. 5a
PIC. 5b
1. Before shimming and installing the rail clamps make sure the canister is centered
between the truck bed rails.
2. Place one plastic shim on the fl at side of each of the clamp shim brackets that will be up
against the truck bed rail. (see Figure 5a)
3. Slide the front clamp rail grips (Figure 5b) 12” inches from the canister then slide the
adjustable clamp shim assembly, 1” from the rail grips on both the left and right side
rails.
4. Loosen the bolt on the clamp shim assembly and slide the bracket up against the truck
bed. Then tighten the bolt so the shim is held tight in place. (Figure 5a)
5. Slide the rear clamp rail grips about 12” from the tailgate then slide the adjustable clamp
shim, 1” from the rail grips on both the left and right rails.
6. Assemble the pivot arms to the clamp rail grips and snug the bolts on the clamps so that
the rails rest fi rmly against the truck bed. (Figure 5b) This works best if you reach your
hand up underneath and behind the CMS rail. (Picture 5a & b) Be sure to use the
SHORTER PIVOT ARMS in the front (nearest the cab) and the LONGER PIVOT ARMS
in the rear (nearest the tailgate) Close the tailgate and position the rails with a 1/16” gap
from the tailgate.
7. Measure the distance between the rails at the canister and tailgate. This distance
should be 58-15/16
”
to allow your cover to operate properly. Adjust the clamp shim
assembly to hold this distance when the clamps are tightened.
8. Once everything is square tighten the Rail clamps completely. Check the between the
rails dimension again to insure it has stayed at 58-15/16” (+0 / -1/16”) Adjust the shims
as required to hold this distance.
9. Ensure that the canister is snug up against the front sill of the truck bed.
Outside of
Truck Bed
Inside of
Truck Bed
Pivot
Arm
Clamp Bolt
(tighten for
proper fi t)
Clamp
Rail Grip
Rail
Adjustable
Clamp Shim
Bracket
Adjusting
Bolt
FIG. 5A
FIG. 5B
Shim
Truck
Bed
Rail
(1 pages)
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