FORD 2011 F-550 v.4 - Manual (Page 261)

RECREATIONAL TOWING
Follow these guidelines if you have a need for recreational (RV) towing.
An example of recreational towing would be towing your vehicle behind
a motor home.
Note: Put your climate control system in recirculated air mode to
prevent exhaust fumes from entering the vehicle. Refer to the Climate
Controls chapter for more information.
In case of a roadside emergency with a disabled vehicle, see Wrecker
towing in the Roadside Emergencies chapter.
These guidelines are designed to ensure that your transmission is not
damaged after the vehicle is hooked-up to the RV or tow dolly.
Drivetrain
configuration
Requirements for neutral towing
4x4 with manual-shift
transfer case Transmission in N (Neutral); transfer case in N
(Neutral); hublocks set to FREE*
4x2 or 4x4 with
electronic-shift
transfer case Do not tow your vehicle with any wheels on
the ground, as vehicle or transmission damage
may occur. It is recommended to tow your
vehicle with all four (4) wheels off the ground
such as when using a car-hauling trailer.
Otherwise, no recreational towing is permitted.
*Always make sure that both hub locks are set to the same position.
Tires, Wheels and Loading
261
2011 F-250/350/450/550 (f23)
Owners Guide, 4th Printing
USA (fus)