wheel torque FORD F550 2010 Owners Manual

Locks and Security 148Keys 148
Locks 148
Anti-theft system 159
Seating and Safety Restraints 164Seating 164
Safety restraints 173
Airbags 185
Child restraints 195
Tires, Wheels and Loading 217Tire information 219
Tire inflation 221
Tire Pressure Monitoring System (TPMS) 237
Vehicle loading 244
Trailer towing 251
Trailer brake controller-integrated 256
Recreational towing 262
Driving 264Starting 264
Brakes 269
Traction Control™ 271
Transmission operation 275
Reverse sensing system 280
Rear-view camera system 282
Roadside Emergencies 303Getting roadside assistance 303
Hazard flasher control 304
Fuel pump shut-off switch 305
Fuses and relays 306
Changing tires 315
Wheel lug nut torque 330
Jump starting 331
Wrecker towing 336Table of Contents
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

If the power steering system breaks down (or if the engine is turned
off), you can steer the vehicle manually, but it takes more effort.
If the steering wanders or pulls, check for:
• an improperly inflated tire
• uneven tire wear
• loose or worn suspension components
• loose or worn steering components
• improper steering alignment
If any steering components are serviced or replaced, install new
fasteners (many are coated with thread adhesive or have prevailing
torque features which may not be re-used). Never re-use a bolt or nut.
Torque fasteners to specifications in Workshop Manual .
A high crown in the road or high crosswinds may also make the steering
seem to wander/pull.
LIMITED-SLIP AXLE (IF EQUIPPED)
This axle provides added traction on slippery surfaces, particularly when
one wheel is on a poor traction surface. Under normal conditions, the
Limited-slip axle functions like a standard rear axle. The axle may
exhibit a slight noise or vibration in tight turns with low vehicle speed.
This is normal behavior and indicates the axle is working.
PREPARING TO DRIVE
WARNING: Utility vehicles have a significantly higher rollover
rate than other types of vehicles.
WARNING: In a rollover crash, an unbelted person is
significantly more likely to die than a person wearing a seat belt.
Utility vehicles and trucks have larger tires and increased ground
clearance, giving the vehicle a higher center of gravity than a passenger
car.
WARNING: Vehicles with a higher center of gravity such as
utility vehicles and trucks handle differently than vehicles with a
lower center of gravity. Utility vehicles and trucks are not designed for
cornering at speeds as high as passenger cars any more than low-slung
sports cars are designed to perform satisfactorily under off-road
conditions. Avoid sharp turns, excessive speed or abrupt maneuvers in
these vehicles. Failure to drive cautiously could result in an increased
risk of loss of vehicle control, vehicle rollover, personal injury and
death. Driving
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

15. Remove the lug nuts with the lug wrench.
16. Replace the flat tire with the spare tire, making sure the valve stem
is facing outward on all front an inboard rear wheels. If replacing the
outboard wheel, the valve stem must be facing inward. Reinstall the lug
nuts until the wheel is snug against the hub. Do not fully tighten the lug
nuts until the wheel has been lowered.
17. Lower the wheel by slowly turning the release valve
counterclockwise. Opening the release valve slowly will provide a more
controlled rate of descent.
The following steps apply to all vehicles:
18. Remove the jack and fully
tighten the lug nuts in the order
shown. Refer to Wheel lug nut
torque specifications later in this
chapter for the proper lug nut
torque specification.
8–lug nut torque sequenceRoadside Emergencies
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

10–lug nut torque sequence
19. Stow the flat tire. Refer to Stowing the flat/spare tire if the vehicle
is equipped with a spare tire carrier.
Note: Do not stow the Harley-Davidson flat tire and wheel using the
spare tire winch mechanism; store the flat in the bed of the truck.
20. Stow the jack, jack handle and lug wrench. Make sure the jack is
securely fastened so it does not rattle when driving.
21. Unblock the wheels.
The following step applies to F–250/F–350 Single Rear Wheel
(SRW) vehicles only:
22. When installing the wheel center
ornaments, ensure that the
ornament retention towers on the
back side of the ornament are
aligned with the studs/lug nuts. The
retention towers are designed to be
installed over the studs/nuts and
retain to the flange on the lug nut. Roadside Emergencies
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

5. Repeat this tightness check procedure when servicing the spare tire
pressure (every six months, per scheduled maintenance information),
or at any time that the spare tire is disturbed through service of other
components.
6. If removed, install the spare tire lock (if equipped) into the bumper
drive tube with the spare tire lock key (if equipped) and jack handle.
WHEEL LUG NUT TORQUE SPECIFICATIONS
On vehicles equipped with single rear wheels, retighten the lug nuts to
the specified torque at 500 miles (800 km) after any wheel disturbance
(tire rotation, changing a flat tire, wheel removal, etc.).
On vehicles equipped with dual rear wheels, retighten the wheel lug nuts
to the specified torque at 100 miles (160 km), and again at 500 miles
(800 km) of new vehicle operation and after any wheel disturbance (tire
rotation, changing a flat tire, wheel removal, etc.).
Bolt size Wheel lug nut torque*
lb.ft. N • m
M14 x 1.5 165 224
* Torque specifications are for nut and bolt threads free of dirt and
rust. Use only Ford recommended replacement fasteners.
It is important to follow the proper wheel mounting and lug nut torque
procedures.
On all two-piece flat wheel nuts,
apply one drop of motor oil between
the flat washer and the nut.
WARNING: When a wheel is installed, always remove any
corrosion, dirt or foreign materials present on the mounting
surfaces of the wheel or the surface of the wheel hub, brake drum or
brake disc that contacts the wheel. Ensure that any fasteners that
attach the rotor to the hub are secured so they do not interfere with
the mounting surfaces of the wheel. Installing wheels without correct
metal-to-metal contact at the wheel mounting surfaces can cause the
wheel nuts to loosen and the wheel to come off while the vehicle is in
motion, resulting in loss of control.Roadside Emergencies
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)