Originally Posted by MtnGuy
The Ford manual has apparently changed since my 2006 F150 came out. My manual states something like "the front bumper needs to be within 1/2" of the unhitched measurement, and the rear bumper no higher than the unhitched measurement". Nothing about whether that 1/2" is higher or lower in front. That confused me for a while, until I thought about it. As the back end goes down, the front bumper comes up....more than the front fenders because of the overhang. The WDH will cause the front bumper to come back down. If I remember correctly, my bumper is the same measurement both hitched and unhitched, using the fender measurements to set up my WDH.
How does the affect weight distributing and trailer sway ??
Yes it has changed. Here's the instructions for the 2013 F150. Page 276.
When hooking-up a trailer using a weight-distributing hitch, always use
the following procedure:
1. Park the loaded vehicle, without the trailer, on a level surface.
2. Measure the height to the top of your vehicle’s front wheel opening
on the fender. This is H1.
3. Securely attach the loaded trailer to your vehicle without the
weight-distributing bars connected.
4. Measure the height to the top of your vehicle’s front wheel opening
on the fender a second time. This is H2.
5. Install and adjust the tension in the weight-distributing bars so that
the height of your vehicle’s front wheel opening on the fender is
approximately halfway between H1 and H2.
6. Check that the trailer is level or slightly nose down toward your
vehicle. If not, adjust the ball height accordingly and repeat
Once the trailer is level or slightly nose down toward the vehicle:
• Lock the bar tension adjuster in place.
• Check that the trailer tongue securely attaches and locks onto the
• Install safety chains, lighting, and trailer brake controls as required by
law or the trailer manufacturer.