Weight distribution hitch
This type of hitch is also called a “load-leveling”or
“equalizing” hitch. A set of bars attach to the ball
mount and to the trailer to distribute the tongue
weight (hitch weight) of your trailer. Many ve-
hicles can’t carry the full tongue weight of a given
trailer, and need some of the tongue weight
transferred through the frame and pushing down
on the front wheels. This gives stability to the tow
vehicle.
Another reason to have a weight distributing ball
mount is to comply with the rating on your re-
ceiver. Most receivers have a weight carrying
rating of 5,000 lbs. gross weight, 500 lbs. tongue
weight and a weight distribution rating of 10,000
lbs. gross weight, 1,000 lbs. tongue weight. This
means that without using a weight distributing
ballmount, the receiver is only designed to carry
5,000 lbs.
When hooking up a trailer using a weight distrib-
uting hitch, always refer to the hitch manufactur-
er’s instructions.
1. Park unloaded vehicle on a level surface.
With the ignition on and the 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.
3. Attach the trailer to the vehicle and adjust
the hitch equalizers so that the front bumper
height is within 0 - .5 inches (0 – 13 mm) of
the reference height measured in step 2. The
rear bumper should be no higher than the
reference height measured in step 2.
WARNING
Properly adjust the weight distributing
hitch so the rear of the bumper is no
higher than the measured reference
height when the trailer is attached. If the
rear bumper is higher than the measured
reference height when loaded, the vehicle
may handle unpredictably which could
cause a loss of vehicle control and cause
serious personal injury or property
damage.
Sway control device
Sway control devices are used to help control the
effects of sudden maneuvers, wind gusts, and
buffeting caused by other vehicles. Make sure the
sway control device is compatible with the trail-
er’s brake system.
Class I hitch
Class I trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 2,000 lb (909 kg).
Class II hitch
Class II trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 3,500 lb (1,510 kg).
Class III hitch
Class III trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 5,000 lb (2,272 kg).
Class IV hitch
Class IV trailer hitch equipment (receiver, ball
mount and hitch ball) can be used to tow trailers
of a maximum weight of 10,000 lb (4,545 kg). A
weight distributing hitch should be used to tow
trailers that weigh over 5,000 lb (2,272 kg).
Your vehicle may be equipped with Class IV
trailer hitch equipment that has a 10,000 lb
(4,545 kg) maximum weight rating, but your ve-
hicle is only capable of towing the maximum
trailer
weights
shown
in
the
“Towing
Load/Specification” chart earlier in this section.
9-20
Technical and consumer information
Z
REVIEW COPY—
2007 Infiniti QX56 (iwz)
Owners Manual—USA_English (nna)
07/08/06—tbrooks
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