tires FORD F250 2012 Workshop Manual

Fifth-wheel trailer hitch (if equipped)
To find the maximum trailer weight allowed for your vehicle, consult
your authorized dealer (or theRV and Trailer Towing Guideprovided
by your authorized dealer).
Fifth-wheel and gooseneck towing
Your vehicle may be equipped with a fifth-wheel prep package. This
package enables your vehicle to accept certain fifth-wheel trailer hitches
and gooseneck ball hitches. The fifth-wheel trailer hitch is attached to
the four mounting pads in the pick-up bed; an optional 7–pin connector
provided in the bed as well. Alternatively, if a gooseneck ball hitch is
used, the ball is attached to the tube in the center of the bed.
Shorter pick-up boxes (e.g. 6’ 6” F-250/350) provide less clearance
between the cab and fifth-wheel/gooseneck trailer compared to “long box”
pick-ups. When selecting a trailer and tow vehicle, it’s critical that this
combination provide clearance between the cab and tow vehicle for turns
up to and including 90 degrees. Failure to follow this recommendation
could result in the trailer contacting the cab of the tow vehicle during tight
turns that are typical during low-speed parking and turning maneuvers.
This contact could result in damage to the trailer and tow vehicle.
WARNING:The mounting pads in the bed are specifically
designed for certain fifth-wheel trailer hitches and gooseneck ball
hitches. Do not use these mounting pads for other purposes. Doing so
could result in vehicle structural damage, loss of vehicle control, and
personal injury. Contact your authorized dealer to purchase gooseneck
and fifth-wheel hitches that are compatible with your vehicle.
WARNING:Towing trailers beyond the maximum limit of the
towing system could result in vehicle structural damage, loss of
vehicle control and personal injury.
Fifth-wheel and gooseneck hitch ratings
WARNING:The hitch rating listed on the trailer hitch label is
the maximum possible trailer rating. To find the maximum trailer
weight allowed for your specific vehicle, consult your authorized dealer
or theRV and Trailer Towing Guideprovided by your authorized
dealer.
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Safety Chains
Note:Do not attach safety chains to the bumper.
Always connect the trailer’s safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer’s safety chains, cross the
chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency
gives to you.
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are safe
if installed properly and adjusted to the manufacturer’s specifications. The
trailer brakes must meet local and Federal regulations.
WARNING:If you own a trailer with a hydraulic brake system,
do not connect the trailer’s hydraulic brake system directly to
your vehicle’s brake system. The vehicle’s brake system is only
designed to carry the appropriate amount of brake fluid for the vehicle
alone. Connecting a hydraulic trailer braking system could adversely
affect your vehicle’s braking performance, which could result in loss of
vehicle control, crash or serious injury.
The braking system of the tow vehicle is rated for operation at the
GVWR not GCWR.
Integrated trailer brake controller (if equipped)
Your vehicle may be equipped with a fully integrated electronic trailer
brake controller (TBC). When used properly, the TBC helps ensure
smooth and effective trailer braking by powering the trailer’s electric
brakes with a proportional output based on the towing vehicle’s brake
pressure.
The Ford TBC has been tested to be compatible with several major
brands of electric-over-hydraulic trailer brakes; contact your authorized
dealer for information on which brands can be used.
WARNING:The Ford TBC has been verified to be compatible
with trailers having electric-actuated drum brakes (one to four
axles) and some electric-over-hydraulic types, but not hydraulic surge
types. It is the responsibility of the customer to ensure that the trailer
brakes are adjusted appropriately, functioning normally and all electric
connections are properly made. Failure to do so may result in loss of
vehicle control, crash or serious injury.
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The TBC user interface consists of
the following:
1.+/- (GAIN adjustment
buttons):Pressing these buttons
adjusts the TBC’s power output to
the trailer brakes (in
0.5 increments). The GAIN setting
can be increased to a maximum of
10.0 or decreased to a minimum of 0 (no trailer braking). Pressing and
holding a button raises or lowers the setting continuously. The gain
setting displays in the message center as follows: TBC GAIN = XX.X.
The trailer brake controller (TBC) is designed to display three items of
information in the instrument cluster message center. These are: gain
setting, output bar graph, and trailer connectivity status. They appear in
the message center as follows:
•TBC GAIN = XX.X NO TRAILER:The instrument cluster message
center displays the current gain setting during a given ignition cycle
and when adjusting the gain. This message is also displayed during
manual activation without a trailer connected or when gain
adjustments are made with no trailer connected.
•TBC GAIN = XX.X OUTPUT = //////:When the vehicle’s brake pedal
is pushed, or when the manual control is activated, bar indicators
illuminate in the instrument cluster message center to indicate the
amount of power going to the trailer brakes relative to the brake pedal
or manual control input. One bar indicates the least amount of output
with six bars indicating maximum output.
•TRAILER CONNECTED:This message is displayed when a correct
trailer wiring connection (a trailer with electric trailer brakes) has
been sensed during a given ignition cycle.
•TRAILER DISCONNECTED:This message is displayed and
accompanied by a single chime, when a trailer connection was
determined and then a disconnection, either intentionally or
unintentionally, has been sensed during a given ignition cycle. It is also
displayed if a truck or trailer wiring fault occurs causing the trailer to
appear disconnected. This message is also displayed during manual
activation without a trailer connected.
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2.Manual control lever:Slide the control lever to the left to activate
power to the trailer’s electric brakes independent of the tow vehicle’s
brakes (see the followingProcedure for adjusting GAINsection for
instructions on proper use of this feature). If the manual control is
activated while the brake is also applied, the greater of the two inputs
determines the power sent to the trailer brakes.
•Stop lamps:Activating the TBC manual control lever illuminates both
the trailer brake lamps and the tow vehicle brake lamps except the
center high-mount stop lamp (presuming proper trailer electrical
connection). Pressing the vehicle brake pedal also illuminates both
trailer and vehicle brake lamps.
Procedure for adjusting GAIN:
The GAIN setting is used to set the TBC for the specific towing condition
and should be changed as towing conditions change. Changes to towing
conditions include trailer load, vehicle load, road conditions and weather.
The GAIN should be set to provide the maximum trailer braking
assistance while ensuring the trailer wheels do not lock when braking;
locked trailer wheels may lead to trailer instability.
Note:This should only be performed in a traffic-free environment at
speeds of approximately 20–25 mph (30–40 km/h).
1. Make sure the trailer brakes are in good working condition, functioning
normally and properly adjusted. See your trailer dealer if necessary.
2. Hook up the trailer and make the electrical connections according to
the trailer manufacturer’s instructions.
3. When a trailer with electric brakes is plugged in, theTRAILER
CONNECTEDmessage displays in the instrument cluster message center.
4. Use the GAIN adjustment (+/-) buttons to increase or decrease the
GAIN setting to the desired starting point. A GAIN setting of 6.0 is a
good starting point for heavier loads.
5. In a traffic-free environment, tow the trailer on a dry, level surface at
a speed of 20–25 mph (30–40 km/h) and squeeze the manual control
lever completely.
6. If the trailer wheels lock up (indicated by squealing tires), reduce the
GAIN setting; if the trailer wheels turn freely, increase the GAIN setting.
Repeat Steps 5 and 6 until the GAIN setting is at a point just below
trailer wheel lock-up. If towing a heavier trailer, trailer wheel lock-up
may not be attainable even with the maximum GAIN setting of 10.
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Explanation of instrument cluster warning messages:
The TBC interacts with the instrument cluster message center to display
the following messages:
TRAILER BRAKE MODULE FAULT:This message is displayed and
accompanied by a single chime, in response to faults sensed by the TBC.
In the event this message is seen, please contact your authorized dealer
as soon as possible for diagnosis and repair. The TBC may still function,
but performance may be degraded.
WIRING FAULT ON TRAILER:This message is displayed when a
Short circuit on the electric brake output wirehas occurred. If the
WIRING FAULT ON TRAILERmessage is displayed and accompanied
by a single chime, with no trailer connected, the problem is with the
vehicle wiring from the TBC to the 7–pin connector at the bumper. If the
message is only displayed with a trailer connected, the problem is related
to the trailer wiring; consult your trailer dealer for assistance. This can
be a short to ground (i.e., chaffed wire) or a short to voltage (i.e., pulled
pin on trailer emergency break-away battery) or trailer brakes drawing
too much current.
Note:Your TBC can be diagnosed by your authorized dealer to
determine exactly which trailer fault has occurred; however, if the fault
is with the trailer this diagnosis isnotcovered under your Ford
warranty.
Points to Remember:
•Remember to adjust gain setting before using the TBC for the first
time.
•Readjust gain setting on the TBC (according to procedure above)
whenever road, weather and trailer or vehicle loading conditions
change from those that existed when the gain was initially set.
•The sliding lever on the TBC should be used only for manual
activation of trailer brakes to assist with proper adjustment of the
GAIN. Misuse, such as application during trailer sway, could cause
instability of trailer and/or tow vehicle.
•Avoid towing in adverse weather conditions. The TBC does not
provide anti-lock control of the trailer wheels. Trailer wheels can lock
up on slippery surfaces, resulting in reduced stability of trailer and
tow vehicle.
•The TBC is equipped with a feature which reduces output at vehicle
speeds below 11 mph (18 km/h) so trailer and vehicle braking is not
jerky or harsh. This feature is only available when applying the brakes
using the vehicle’s brake pedal, not the TBC.
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•The TBC interacts with the brake system of the vehicle, including
ABS, in order to reduce the likelihood of trailer wheel lock-up;
therefore, if these systems are not functioning properly, the TBC may
not function at full performance.
•Your vehicle’s brake system and the trailer brake system work
independently of each other; changing the GAIN setting on the TBC
does not affect the operation of your vehicle’s brakes whether a trailer
is attached or not.
•When the vehicle is turned off, the TBC output is disabled and the
display is shut down; turning the ignition from off to on awakens the
TBC module.
•The TBC is only a factory- or dealer-installed item; Ford is not
responsible for warranty or performance of the TBC due to misuse or
customer installation.
•Do not attempt removal of the TBC without consulting the
Workshop Manual; damage to the unit may result.
Trailer Lamps
Trailer lamps are required on most towed vehicles. Make sure all running
lights, brake lights, turn signals and hazard lights are working. Contact
your authorized dealer or trailer rental agency for proper instructions
and equipment for hooking-up trailer lamps.
Driving while you tow
When towing a trailer:
•Consult your local motor vehicle laws for towing a trailer.
•Do not drive faster than 70 mph (113 km/h) during the first 500 miles
(800 km) of trailer towing and don’t make full-throttle starts.
•Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
•Activate the tow/haul feature to eliminate excessive transmission
shifting and assist in transmission cooling. For additional information,
refer toAutomatic transmission operationin theDrivingchapter.
•Allow more distance for stopping with a trailer attached; anticipate
stops and brake gradually.
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Your vehicle may be equipped with a temporary or conventional spare
tire. If the spare tire is different in size (diameter and/or width), tread
type (All-Season or All-Terrain) or is from a different manufacturer other
than the road tires on your vehicle, your spare tire is considered
“temporary”. Consult information on the Tire Label or Safety Compliance
Certification Label for limitations when using.
Trailer towing safety tips
General
•Ensure that the trailer, safety chains and 7–pin electrical connectors
are securely fastened.
•Make sure the truck receiver, draw bar and coupler are properly
connected and adjusted.
•Check rear view and side mirrors for proper visibility especially when
towing a trailer wider than the truck.
•When turning, make wide turns to allow trailer tires to properly clear
any obstacles.
•Operate the vehicle at lower speeds than you would when not towing
a trailer; the likelihood of trailer sway is greater at higher speeds.
•Be prepared for trailer sway due to buffeting when larger vehicles
pass in either direction.
•If you will be towing a trailer frequently in hot weather, hilly
conditions, at GCWR, or any combination of these factors, consider
refilling your rear axle with synthetic gear lubricant if not already so
equipped. Refer toMaintenance product specifications and
capacitiesin theMaintenance and Specificationschapter for the
proper axle lubricant. Remember that regardless of the rear axle
lubricant used, do not tow a trailer for the first 500 miles (800 km) of
a new vehicle, and that the first 500 miles (800 km) of towing be done
at no faster than 70 mph (113 km/h) with no full-throttle starts.
Loading
•Trailer loads should be evenly distributed front-to-back and
left-to-right.
•Never exceed truck, trailer, receiver, ball, tongue, tire or coupler
loading recommendations.
•Keep the center of gravity low for best handling.
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Braking
•Anticipate stops; allow more distance and time to stop than normal.
•Do not apply the trailer brakes for extended periods of time as they
can overheat and lose effectiveness.
•The trailer brakes (including the shoes, drum and trailer brake
magnets) must be inspected and serviced at intervals specified by the
manufacturer.
•Electric brakes also require periodic adjustment to keep the shoes
properly spaced. If the brakes get hot when driving or if they will not
hold, chances are that they need adjustment.
Backing-up
•Practice backing-up, particularly if you are a novice. Turn the steering
wheel to the right to move the trailer’s rear end to the right.
•Sharp steering movements may cause the trailer to jackknife or go out
of control.
Tires
•Select tires that meet the trailer loading requirements.
•All trailer tires should be of the same size, and construction.
•Always check tow vehicle and trailer tire pressure before towing.
Launching or Retrieving a Boat or Personal Water Craft (PWC)
Note:Disconnect the wiring to the trailerbeforebacking the trailer into
the water.
Note:Reconnect the wiring to the trailer after the trailer is removed
from the water.
When backing down a ramp during boat launching or retrieval:
1. Do not allow the static water level to rise above the bottom edge of
the rear bumper.
2. Do not allow waves to break higher than six inches (15 centimeters)
above the bottom edge of the rear bumper.
Exceeding these limits may allow water to enter vehicle components:
1. Causing internal damage to the components.
2. Affecting driveability, emissions, and reliability.
Replace the rear axle lubricant any time the rear axle has been
submerged in water. Water may have contaminated the rear axle
lubricant, which is not normally checked or changed unless a leak is
suspected or other axle repair is required.
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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 theClimate
Controlschapter for more information.
In case of a roadside emergency with a disabled vehicle, seeWrecker
towingin theRoadside Emergencieschapter.
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
configurationRequirements for neutral towing
4x4 with manual-shift
transfer caseTransmission in N (Neutral); transfer case in N
(Neutral); hublocks set to FREE*
4x2 or 4x4 with
electronic-shift
transfer caseDo 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.
RECOVERY HOOKS
WARNING:Using recovery hooks is dangerous and should only
be done by a person familiar with proper vehicle recovery safety
practices. Improper use of recovery hooks may cause hook failure
and/or separation from the vehicle and could result in serious injury or
death.
WARNING:Always slowly remove the slack from the recovery
strap prior to pulling. Failure to do so can introduce significantly
higher loads which can cause the recovery hooks to break off, or the
recovery strap to fail which can cause serious injury or death.
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WARNING:Never link two straps together with a clevis pin.
These heavy metal objects could become projectiles if the strap
breaks and can cause serious injury or death.
Your vehicle comes equipped with frame-mounted front recovery hooks.
These hooks should never have a load applied to them greater than the
GVWR of your vehicle.
Before using the recovery hooks:
•Make sure all attaching points are secure and capable of withstanding
the applied load.
•Never use chains, cables or tow straps with metal hook ends.
•Only use recovery straps that have a minimum breaking strength two
to three times the GVW of the stuck vehicle.
•Make sure the recovery strap is in good condition and free of visible
cuts, tears or damage.
•Use a damper device such as a tarp, heavy blanket or piece of carpet
draped over the recovery strap to help absorb the energy in the event
the strap breaks.
•Make sure the stuck vehicle is not loaded in excess of its GVWR
specified on the certification label.
•Always align the tow vehicle and stuck vehicle in a straight line
(within 10 degrees).
•Keep bystanders to thesidesof the vehicle, at a distance of at least
twice the length of the recovery strap. This helps avoid injury from
the hazard of a recovery hook or strap breaking, or a vehicle lurching
into their path.
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