2011 Lincoln Navigator Owner Guide 1st Printing - Page 213

Tires, Wheels and Loading 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. Maximum Trailer Maximum Tongue Weight - lb (kg) 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. 213 Mode 2011 Navigator (nav) Owners Guide, 1st Printing USA (fus)