brakes FORD F650 2012 12.G Owner's Guide

Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use hitches that clamp onto the vehicle’s bumper or attach to the
axle. You must distribute the load in your trailer so that 10–15% of the
total weight of the trailer is on the tongue.
Safety chains
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.
Do not attach safety chains to the bumper.
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:Do not connect a trailer’s hydraulic brake system
directly to your vehicle’s brake system. Your vehicle may not
have enough braking power and your chances of having a collision
greatly increase.
Trailer lamps
Trailer lamps are required on most towed vehicles. Your vehicle may be
equipped with one of two possible trailer wiring designs. Make sure all
running lights, brake lights, turn signals and hazard lights are working.
See your dealer or trailer rental agency for proper instructions and
equipment for hooking up trailer lamps.
Driving while you tow
When 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.
Driving
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•Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
•Use a lower gear to eliminate excessive shifting and assist in
transmission cooling.
•Allow more distance for stopping with a trailer attached; anticipate
stops and brake gradually.
Servicing after towing
If you tow a trailer for long distances, your vehicle requires more
frequent service intervals. Refer to theScheduled Maintenance Guide
chapter for more information.
Trailer towing tips
•Practice turning, stopping and backing up before starting on a trip to
get the feel of the vehicle trailer combination. When turning, make
wider turns so the trailer wheels clears curbs and other obstacles.
•Allow more distance for stopping with a trailer attached.
•If you are driving down a long or steep hill, shift to a lower gear. Do
not apply the brakes continuously, as they may overheat and become
less effective.
•
The trailer tongue weight should be 10–15% of the loaded trailer weight.
•If you are towing a trailer frequently in hot weather, hilly conditions,
at GCW, or any combination of these factors, consider refilling your
rear axle with synthetic gear lube if not already so equipped. Refer to
Lubricant specificationsin theMaintenance and Specifications
chapter for the lubricant specification. Remember that regardless of
the rear axle lube 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 (112 km/h) with no full
throttle starts.
•After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
•
To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park) (if
available on your automatic transmission) or N (Neutral) (manual
transmissions and automatic transmissions withoutaP[Park] position).
•Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer’s wheels.
Driving
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FIFTH-WHEEL OPERATION
WARNING:Failure to follow the fifth-wheel manufacturer’s
instructions for hooking and unhooking as well as sliding the
fifth-wheel could result in an accident, personal injury or death.
WARNING:When the tractor and trailer are parked unattended,
the trailer brake hand control should never be used to apply the
brake, since air may leak from the system, allowing vehicle movement,
resulting in possible property damage, personal injury or death.
Before hook-up, make sure:
•The fifth-wheel jaws are fully opened.
•The fifth-wheel is fully tilted back to prevent body damage when the
tractor is backed under a trailer.
•The trailer wheels are blocked and the trailer spring brakes are
adjusted and applied. Never chase a trailer.
•The brake hoses and light cords are clear of the fifth-wheel.
Hook-up
1. Back the tractor squarely under the trailer, engaging the fifth-wheel
jaws on the kingpin. Always back-up slowly, making sure the trailer is
neither too high nor too low. Avoid backing under the trailer from an
angle.
2. Connect the service and emergency brake hoses and trailer light
connector. Refer toTractor-trailer connectionsin theAir suspension
section of this chapter, adhering to the warning and using the three-point
stance while connecting and disconnecting the trailer.
3. Inspect the jaws of the fifth-wheel to be sure they have fully closed on
the trailer kingpin and the trailer plate is resting securely on the
fifth-wheel.
4. Be sure the coupler release lever is in the locked position.
5. Charge the trailer brake system. Set the trailer brakes, either with the
hand valve or tractor protection valve. Pull against the trailer for an
additional check of proper hook-up. Do not pull hard enough to damage
or strain the equipment.
Driving
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6. Set the tractor parking brakes and fully raise the trailer landing gear.
Refer toBrakesin this chapter for proper operation of the parking brake
and trailer brakes.
7. Check the operation of all trailer lights and correct any lights that may
be faulty.
Un-hook
1. Try to keep the tractor and trailer in a straight line.
2. Apply the parking brakes.
3. Lower the trailer landing gear, making sure it is on solid, level ground.
The weight of the trailer is to be on the landing gear.
4. Block the trailer wheels.
5. Disconnect the brake hoses and light cords. Be sure hoses and cords
are clear.
6. Pull coupler release lever to disengage the fifth-wheel jaws.
7. Release the tractor parking brakes.
8. Pull out from the trailer slowly, allowing the landing gear to take the
load gradually.
Driving
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Fuse/Relay
locationFuse amp
ratingFuse description
15 10A Interior lamp relay
16 15A High beams, Indicator
17 — Not used
18 5A Dimmer switch, Interior lighting
19 15A Engine control (diesel engine only)
20 5A Starting system
21 10A DRL resistor
22 15A Air horn, Air suspension dump, Two-speed
axle, Driver-controlled locking differential
23 10A Flasher relay
24 15A Hydraulic brakes relay, Fuel heater relay
(diesel engine only), Air dryer
25 10A Blower motor relay coil
26 10A Right-hand low beam headlight
27 — Not used
28 10A Left-hand low beam headlight
29 10A Cluster, GEM
30 15A Allison electronic transmission
31 15A Mirror fold relay
Relay 1 — Interior lamps
Relay 2 — Not used
Relay 3 — Horn
Relay 4 — Not used
Relay 5 — Not used
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Fuse/Relay
locationFuse amp
ratingFuse description
10 15A Air tank moisture removal valve
11 30A Electric trailer brake
12 20A Passenger compartment fuse box 5 and 21
13 15A Instrument cluster/Gateway module
14 20A Nitrogen oxide sensor (diesel engine only)
15 — Not used
16 5A BendixAir ABS
17 — Not used
18 10A Fuel transfer pump
19 15A Powertrain control module power 1 (gasoline
engine only)
20 10A Powertrain control module power 2 (gasoline
engine only)
21 20A Powertrain control module power 3 (gasoline
engine only)
22 20A Powertrain control module power 4 (gasoline
engine only)
23 — Not used
24 10A Powertrain control module keep-alive power
(gasoline engine only)
101 30A Bendix Air ABS relay (Air brake vehicles
only)
Hydraulic brakes module (Hydraulic brake
vehicles only)
102 20A Ignition switch
103 20A Ignition switch, Passenger compartment fuse
box fuses 19, 29 and 30
104 20A Power point
105 20A Power door lock switches
106 30A Main light switch, Multi-function switch
107 50A Passenger compartment fuse box fuses 1, 2,
3, 4, 12, 13, 14 and 15
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Fuse/Relay
locationFuse amp
ratingFuse description
108 40A Fuel heater (diesel engine only)
20A Fuel pump module (gasoline engine only)
109 40A Power window
110 30A Windshield wiper
111 30A Body builder relay, Parking lamps
112 40A Blower motor
113 30A Heated seats, Air-Ride seat
114 20A Aftertreatment DCU
115 20A Ignition switch, Passenger compartment fuse
box fuses 8, 9, 10 and 11
116 30A Left/Right turn relays, Back-up lamp relay
117 20A Stoplamps
118 60A Hydraulic brake vehicles (Trailer tow package
only)
601 60A Trailer socket
602 60A Air brake trailer tow fuse block
30A Hydraulic brakes pump motor 2
201 — Windshield washer relay
202 — Wiper high/low relay
203 — Wiper run/park relay
204 — Windshield wiper relay
205 — Body builder relay, right turn
206 — Body builder relay, left turn
207 — ABS event relay (Hydraulic brake vehicles
only)
208 — Body builder relay, back-up lamps relay
209 — Auxiliary stoplamp relay
301 — Fuel heater/Fuel transfer pump relay (diesel
engine only)
— Fuel pump module (gasoline engine only)
302 — Body builder relay, parking lamps relay
303 — Blower motor relay
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Fuse/Relay
locationFuse amp
ratingFuse description
304 — DEF (Urea) line heaters relay (diesel engine
only)
— Powertrain control module power VPWR1
(gasoline engine only)
Individual maxi-fuse holder in engine compartment
Fuse
locationFuse amp
ratingFuse description
9925 30A Hydraulic brakes pump motor 1
Relay center
The relay center is located along the passenger side A-pillar on the right
side of the footwell.
Relay
locationRelay description
R1 Spring applied hydraulic release warning chime module or
PCM power VPWR 2, 3 and 4
R2 A/C compressor clutch
R3 Power windows
R4 Flasher (standard/LED)
R5 Upfitter relay 1
R6 Upfitter relay 2
R7 Headlights
R8 Spare
R1
R9 R10 R11 R12 R13 R14 R15 R16 R17
R18 R19 R20 R21 R22 R23 R24 R25 R26
R2 R3 R4 R5 R6 R7 R8
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4. Remove the jumper cable from the positive (+) terminal of the
disabled vehicle’s battery.
After the disabled vehicle has been started and the jumper cables
removed, allow it to idle for several minutes so the engine computer can
relearnits idle conditions.
WRECKER TOWING INSTRUCTIONS
Before moving the disabled vehicle, check for adequate road clearance of
vehicle components. It is recommended the disabled vehicle be unloaded
prior to being towed to reduce any abnormal load to the vehicle
components resulting from the towing procedures. Before towing, be sure to
fully release the parking brake. The spring-actuated type parking brake can
be reset by recharging the air system with at least 64 psi (441 kPa) of air. If
the brake system does not retain air pressure, then the spring brakes must
be released manually. Refer toParking brakein theDrivingchapter.
Note:For towing, make sure the vehicle is securely connected to the
tow vehicle and the tow vehicle’s parking brakes are applied before
releasing the disabled vehicle’s spring brakes.
WARNING:To reduce the risk of personal injury or property
damage when manually releasing the spring brakes, be sure to
block the wheels so the vehicle cannot move once the brakes are
released.
Towing the vehicle with the front wheels suspended
When it is necessary to tow a vehicle with the front wheels suspended, extra
precautions must be taken to avoid transmission or differential damage:
•Remove the axle shafts from the axle assembly to prevent the wheels
from driving the differential and the transmission.
•The wheel hub ends must be covered to prevent loss of axle lubricant
and entrance of other contaminants. If the axle shafts are not
removed, removal of the driveshaft is required.
+–+–
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GENERAL SERVICING GUIDELINES AND PRECAUTIONS
Always use care when performing vehicle maintenance, repairs or system
checks. Improper or incomplete service could result in the vehicle not
working properly which may result in personal injury or damage to the
vehicle or equipment. It is the operator’s responsibility to see that the
vehicle receives proper care and maintenance. If you have any questions
about performing service, have the service done by a qualified
technician.
Servicing guidelines
When servicing your vehicle, always:
•wear safety glasses for eye protection.
•do not wear loose-fitting clothing, hanging jewelry, watches or rings.
•do not smoke.
•set the parking brake or chock the wheels.
•use support stands, not a jack, when working under a raised vehicle.
•turn off the ignition unless a procedure requires the engine to be
running.
•operate the engine in a well-ventilated area.
•do not work on the brakes or the clutch unless the proper precautions
are taken to avoid inhaling friction material dust.
•avoid contact with hot metal parts. Allow the components to cool
before working with, or around, them.
Quality service parts are available through your dealer. If dealer parts are
not used, make sure the replacement parts are of equivalent quality.
WARNING:The use of inferior parts can adversely affect the
quality and reliability of your vehicle which, in turn, can result in
property damage, personal injury or death.
Note:To avoid damage to the vehicle’s electrical components prior to
electric welding:
•disconnect both battery cables.
•attach the welder ground cable as close as possible to the part being
welded.
•if it is necessary to weld close to an electrical component, it is
recommended that the component be temporarily removed.
Maintenance and Specifications
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