FORD 2013 F-550 v.3 - Manual (Page 259)

Shorter pick-up boxes, such as a 6 1 ⁄
2
-foot box on the F-250 and F-350,
provide less clearance between the cab and the fifth-wheel and
gooseneck trailer compared to longer box pick-ups, such as an 8–foot
box on the F-250 and F-350. When selecting a trailer and tow vehicle, it
is critical to check that this combination provides clearance between the
front of the trailer and tow vehicle for turns up to 90 degrees. Failure to
follow this recommendation could result in the trailer contacting the cab
of the tow vehicle during tight turns that are typical during low-speed
parking and turning maneuvers. This contact could result in damage to
the trailer and tow vehicle.
To find the maximum trailer weight allowed for your vehicle, consult an
authorized dealer or see the RV & Trailer Towing Guide provided by an
authorized dealer.
Safety Chains
Note: Do not attach safety chains to the bumper.
Always connect the trailer’s safety chains to the frame or hook retainers
of your vehicle hitch.
To connect the trailer’s safety chains, cross the chains under the trailer
tongue and allow enough slack for turning tight corners. Do not allow the
chains to drag on the ground.
Trailer Brakes
WARNING: Do not connect a trailer’s hydraulic brake system
directly to your vehicle’s brake system. Your vehicle may not have
enough braking power and your chances of having a collision greatly
increase.
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if you install them properly and adjust them to the manufacturer’s
specifications. The trailer brakes must meet local and federal regulations.
The rating for the tow vehicle’s braking system operation is at
the gross vehicle weight rating, not the gross combined weight
rating.
Separate functioning brake systems are required for safe control
of towed vehicles and trailers weighing more than 1500 pounds
(680 kilograms) when loaded.
258 Towing
2013 F-250/350/450/550 (f23)
Owners Guide gf, 3rd Printing, December 2012
USA (fus)