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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.
Mode Maximum Trailer
Weight - lb (kg)
Maximum Tongue
Weight - lb (kg)
Weight-carrying 6000 (2721) 600 (272)
Weight-distributing 9000 (4082) 900 (408)
These are hitch ratings only; actual vehicle ratings are dependent on
engine, transmission and axle combinations.
WARNING: 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 load-equalizing hitch, always use the
following procedure:
1. Park the unloaded vehicle on a level surface. With the ignition in the
on position and all doors closed, allow the vehicle to stand (without
passengers) for several minutes so that it can level.
2. Turn the air suspension (if equipped) control to off.
3. Measure the height of a reference point on the front and rear bumpers
at the center of the vehicle.
4. Attach the trailer to the vehicle and adjust the hitch equalizers so that
the front bumper height is within a
1
⁄
2
in. (13 mm) of the reference
point. After proper adjustment, the rear bumper should be no higher
than in Step 3.
5. Turn the air suspension (if equipped) control to on.
Tires, Wheels and Loading
213
2011 Navigator (nav)
Owners Guide, 1st Printing
USA (fus)