Ford Super Duty Owner's Manual page 268

We recommend the use of a wheel lift and dollies or flatbed equipment
to tow your vehicle. Do not tow with a slingbelt. Ford Motor Company
has not approved a slingbelt towing procedure. Vehicle damage may
occur if towed incorrectly, or by any other means.
Ford Motor Company produces a towing manual for all authorized tow
truck operators. Have your tow truck operator refer to this manual for
proper hook-up and towing procedures for your vehicle.
It is acceptable to have your two-wheel drive vehicle towed with the
front wheels on the ground (without dollies) and the rear wheels off the
ground.
We recommend towing a four-wheel drive vehicle with all wheels off the
ground, such as using a wheel lift and dollies or flatbed equipment.
However, it is acceptable to use a wheel lift to raise the rear of your
vehicle so long as, depending on vehicle configuration, you perform the
following before towing:
• If your vehicle is equipped with a manual-shift transfer case, make
sure the front wheel hub locks are in the FREE position before
towing.
• If your vehicle is equipped with an electronic shift-on-the-fly transfer
case, make sure you turn the four-wheel drive control to the 2L
position before towing.
Note: Towing an electronic shift-on-the-fly four-wheel drive vehicle with
the front wheels on the ground without disengaging the front hubs may
cause damage to the automatic transmission.
Note: Towing a two-wheel drive vehicle or an electronic shift-on-the-fly
four-wheel drive vehicle with the rear wheels on the ground for more
than 50 miles (80 km) or faster than 35 mph (56 km/h) may cause
damage to the automatic transmission.
Note: Using wheel lift equipment to tow a dual rear wheel vehicle
requires removing an outer rear wheel before towing.
2013 F-250/350/450/550 (f23)
Owners Guide gf, 2nd Printing, December 2012
USA (fus)
Towing 267