Horizon Global PRO Serie Manuel D'instructions page 36

4. The slider provides additional turning clearance for low speed, off-highway maneuvering such as
backing a RV trailer into a tight camp site. This is done by sliding the hitch 10 inches rearward of its normal
Towing Position (figure 4) to a Maneuvering Position (figure 5). This places the trailer king pin behind the
rear truck axle.
figure 4
KING PIN
CENTER
In this figure, the slider is positioned in the
Towing Position, forward of the rear axle.
Note that a 13-1/2" pin box extension has been
used. This is the only position you should use
when towing!
Never tow trailers in highway or high speed conditions with slider in the
Maneuvering Position (rearward of the rear axle)! Towing with the trailer king pin
rearward of rear truck axle can affect weight distribution and may interfere with
the towing vehicle's handling and response characteristics. Poor handling and
response characteristics could result in death or serious injury.
5. Due to the heavy duty nature of the slider assembly, the assembly may not
slide by hand when installed, especially if base rails are not securely installed parallel and centered.
Rails should be installed so that the center lines of each rail are 21.94 inches (21 15/16") apart (see figure 6).
Diagonal dimensions "x" and "y" (as depicted in figure 6) should be within 0.1 inch (1/8") of each other.
If this alignment is not met, loosen hardware and realign base rails. Re-torque hardware per
instructions after base rails are properly aligned.
6. If your bed rails do not have bolts in the center, drill 2 holes identified in figure 6 (check for obstructions). Drill
all holes with 3/16" drill and enlarge them with a 17/32" drill. Always use sharp drill bits. Install 1/2-13 x 2"
carriage bolts, blocks, washers and nuts similar to the other attachments. These fasteners are not included.
Contact Horizon Global (1-888-521-0510) if required.
figure 6
Base rails in truck bed
30092IN– 9/22/17 PCN8340
Rear Axle
WARNING:
X
©2011, 2015 HORIZON GLOBAL AMERICAS INC
figure 5
Rear Axle
In this figure, the slider is positioned in the
Maneuvering Position. Note that a 13-1/2" pin
box extension has been used. The maneuvering
Position should only be used at a low speed,
when high maneuverability is needed!
Add bolt (If not present)
Y
Optional bolt
positions, if
obstructed.
Add bolt (If not present)
Printed in Mexico
KING PIN
CENTER
3