FORD 2012 F-550 v.3 - Manual (Page 336)

2. Attach the spare tire lock key (A)
to the jack handle (B).
3. Fully insert the jack handle (with
one extension) through the bumper
hole and into the guide tube. The
key and lock will engage with a
slight push and counterclockwise
turn. Some resistance will be felt
when turning the jack handle
assembly.
4. Turn the handle counterclockwise
and lower the spare tire until you
can slide the tire rearward and the
cable is slack.
5. Remove the retainer through the center of the wheel.
If equipped with a tether, perform the following additional steps:
6. Lift the spare tire on end to
access the tether attachment.
7. Use the lug wrench to remove the
lug nut from the spare tire tether.
8. If not replacing the spare or flat
tire to the underbody storage area,
raise the wheel retainer up into the
installed position.
9. Use the attached fastener strap
(on the spare tire tether) to attach
the tether end to the winch retainer prior to raising to the installed
position.
Tire change procedure
WARNING: When one of the rear wheels is off the ground, the
transmission alone will not prevent the vehicle from moving or
slipping off the jack, even if the transmission is in P (Park).
Roadside Emergencies
336
2012 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)