FORD 2008 F-550 v.4 - Manual (Page 245)

Integrated hitch rating
The standard integrated hitch has two ratings depending on mode of
operation:
• Weight carrying - requires a draw bar and hitch ball. The draw bar
supports all the vertical tongue load of the trailer.
• Weight distributing - requires an aftermarket weight distributing
system which includes draw bar, hitch ball, spring bars and snap-up
brackets. The vertical tongue load of the trailer is distributed between
the truck and the trailer by this system.
Hitch Type
Maximum
Gross Trailer
Weight — lb.
(kg)
Maximum
Tongue Weight
— lb. (kg)
6.8L DRW Pickup
2.5” ID without
adapter (requires
2.5” drawbar) Weight carrying 8000 (3629) 800 (363)
Weight
distributing 15000 (6804) 1500 (680)
6.8L DRW Pickup
2.5” ID with
adapter (requires
2” drawbar) Weight carrying 6000 (2721) 600 (272)
Weight
distributing 12500 (5670) 1250 (567)
All SRW Pickups
and 5.4L DRW
Pickups
2” receiver Weight carrying 6000 (2721) 600 (272)
Weight
distributing 12500 (5670) 1250 (567)
Towing trailers beyond the maximum tongue weight exceeds the
limit of the towing system and could result in vehicle structural
damage, loss of vehicle control and personal injury.
Weight distributing hitch
When hooking up a trailer using a weight distributing hitch, always use
the following procedure:
1. Park the unloaded vehicle on a level surface. With the ignition on and
all doors closed, allow the vehicle to stand for several minutes so that it
can level.
2. Measure the height of a reference point on the front and rear bumpers
at the center of the vehicle.
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Tires, Wheels and Loading
245