
If the engine reaches a preset
over-temperature condition, the engine
automatically switches to alternating
cylinder operation. Each disabled cylinder
acts as an air pump and cools the engine.
When this occurs, your vehicle still
operates, however:
•
Engine power is limited.
• The air conditioning system turns off.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
When Fail-Safe Mode Is Activated WARNINGS
Fail-safe mode is for use during
emergencies only. Operate your
vehicle in fail-safe mode only as long
as necessary to bring your vehicle to rest
in a safe location and seek immediate
repairs. When in fail-safe mode, your
vehicle will have limited power, will not be
able to maintain high-speed operation, and
may completely shut down without
warning, potentially losing engine power,
power steering assist, and power brake
assist, which may increase the possibility
of a crash resulting in serious injury. Never remove the coolant reservoir
cap while the engine is running or hot.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation: 1. Pull off the road as soon as safely
possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage.
Engine Coolant Temperature
Management (If Equipped) WARNING
To reduce the risk of crash and injury,
be prepared that the vehicle speed
may reduce and the vehicle may not
be able to accelerate with full power until
the coolant temperature reduces. If you tow a trailer with your vehicle, the
engine may temporarily reach higher a
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
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F-650/750 (TBC) , enUSA, First Printing Maintenance

•
Robinair® Coolant and Battery
Refractometer 75240 –
Recommended refractometer to test
coolant concentration. (Rotunda tool
part number: ROB75240).
• Rotunda 328-R071–ELC (Antifreeze
Coolant ELC Contamination Kit)
–
Evaluates the corrosion inhibitor
additive strength. Note the first step is
to verify the vehicle ’s coolant
concentration is in the correct range of
40 – 60%. Coolant concentrations
outside this range will not provide valid
test results. If the report results in a
pass, for example the cooling system
does not show excessive
contamination, the corrosion inhibitor
additive strength is sufficient, and no
action is required. If the report results
as insufficient (does not pass), the
corrosion inhibitor additive strength of
the coolant is too low. If the engine
cooling system corrosion inhibitor
additive strength is low, add
47 fl oz
(1.4 L) of Motorcraft Specialty Orange
Engine Coolant Revitalizer. If the
secondary cooling system corrosion
inhibitor additive strength is low, add
16 fl oz (0.47 L) of Motorcraft Specialty
Orange Engine Coolant Revitalizer.
• Motorcraft Specialty Orange Engine
Coolant Revitalizer
– Additive to
boost the corrosion inhibitor level
based upon the test results of the
Antifreeze Coolant ELC Contamination
Kit. The Revitalizer may be added two
times over the life of the coolant. If
additional dosages are required, the
cooling system must be flushed and
refilled per the instructions in the
Workshop Manual.
Make sure to follow the proper coolant and
additive specifications. See
Capacities
and Specifications (page 252). Coolant Change
At specific mileage intervals, as listed in
the scheduled maintenance information,
the coolant should be changed. The
information display may display a message
to change coolant at this time. Add
prediluted coolant approved to the correct
specification. See
Capacities and
Specifications (page 252).
Engine-driven Cooling Fan (Fan
Clutch)
Your vehicle may have an engine driven
cooling fan drive (also called a fan clutch).
This fan drive changes the fan speed to
match the vehicle ’s changing cooling air
flow requirements. Fan speed, fan noise
level and fuel consumption all will increase
based on the driving conditions that
include trailer towing, hill climbing, heavy
loads, high speed and high ambient
temperature, individually or in combination.
The fan drive is designed to provide the
minimum fan speed (and resulting
minimum fan noise and fuel consumption)
required to meet the ever changing vehicle
cooling air flow requirements. You will hear
the amount of fan noise increasing and
decreasing as the engine power
requirements and vehicle driving conditions
change as you drive. This is to be expected
as being normal to the operation of your
vehicle. High levels of fan noise might also
be heard when your engine is first started,
and should normally decrease after driving
for a short time.
AUTOMATIC TRANSMISSION
FLUID CHECK
The transmission does not consume fluid.
However, the fluid level should be checked
if the transmission is not working properly,
for example if the transmission slips, shifts
slowly or if there are signs of fluid loss.
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F-650/750 (TBC) , enUSA, First Printing Maintenance

as a stroke indicator to aid in
adjustment checks. If the push rod is
clean and the brakes are out of
adjustment, you can see the orange
marker protruding from the chamber
when the brakes are applied.
• Checking the brake lining (every service
interval). When brake linings or blocks
wear within 0.063 in (1.6 mm) they
must be replaced.
• Periodic checking (every service
interval) of the air compressor filter.
Check the filter minder and when the
indicator is near or on the red line
marked
Service, replace the filter and
reset the service filter minder.
Do not back off or disconnect the front
brakes so that they are less effective,
letting the rear brakes do all the stopping
of your vehicle. Do not overlook the brakes
on the trailer either. Brake condition on the
trailer is just as important as the tractor.
Proper brake balance on trucks and
tractor-trailers is essential for effective
braking.
Once a year, inspect the entire brake
system:
• Rubber components for deterioration.
A qualified technician should inspect
these components and replace them
as necessary. Replacement intervals
vary according to the severity and
length of vehicle service.
• Condition of brake drums, brake
chambers and slack adjusters.
• System for air leaks.
• Hose or pipes for rust, damage and
deterioration.
• Operation of service and parking
brakes.
Periodically inspect parts such as air brake
chamber diaphragm, air compressor and
air cleaner. Replace any parts if you can
consider them unserviceable. Air Dryer
Climactic conditions affect performance
of desiccant or after-cooler type air dryers.
You must establish a maintenance
schedule for each specific operation.
The use of an air dryer on a vehicle does
not eliminate the need to drain the air
reservoirs periodically.
Inspect for moisture in the air system by
opening reservoirs, draincocks or valves
and checking for presence of water. The
presence of small amounts of water due
to condensation is normal and is not an
indication that the dryer is not functioning
properly.
Replace or rebuild the desiccant cartridge
when you determine that the desiccant is
contaminated and does not have adequate
water absorption capacity. The desiccant
change interval may vary. A general
recommendation is to replace the
desiccant every 12 months (yearly). If
experience has shown that extended or
shortened life has resulted for a particular
installation, then the yearly interval can be
increased or decreased accordingly.
Draining the Air Brake Reservoir
WARNING
Failure to drain air brake reservoirs
can result in a reduction or loss of
braking ability due to fluid
accumulation in the reservoir and/or
possible freeze-up during cold weather. Completely drain all the air brake reservoirs
daily by opening the draincock at the ends
of the tanks. (Where accessible.
Pull-chains are used when the drains are
undercab or otherwise inaccessible.) Close
the draincock after draining. Manually drain
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F-650/750 (TBC) , enUSA, First Printing Maintenance

Towing a trailer
Inspect and lubricate U-joints.
Inspect frequently, service
as required
See axle maintenance items under Exceptions.
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Every 5000 miles (8000
km)
Rotate tires*
, inspect tires for wear and measure tread
depth.
Change engine oil and filter.
Every 5000 miles (8000
km) or six months
Inspect and lubricate U-joints.
Replace spark plugs.
Every 60000 miles (96000
km)
* Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Extensive idling or low-speed driving for long distances, as in heavy commercial use
(such as delivery, taxi, patrol car or livery)
Replace engine air filter.
Inspect frequently, service
as required
Inspect brake system.
Every 5000 miles (8000
km)
Inspect wheels and related components for abnormal
noise, wear, looseness or drag.
Lubricate control arm and steering ball joints if equipped
with grease fittings.
Rotate tires*
, inspect tires for wear and measure tread
depth.
Inspect and lubricate U-joints.
Every 5000 miles (8000
km) or six months
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F-650/750 (TBC) , enUSA, First Printing Scheduled Maintenance

Diesel Engine
If you operate your vehicle primarily in any
of the following conditions, you need to
perform extra maintenance as indicated.
If you operate your vehicle
occasionally under any of these conditions, it is not
necessary to perform the extra
maintenance. For specific
recommendations, see your dealership
service advisor or technician. Towing a trailer
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
See the axle maintenance items under
Exceptions.
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15000 miles (24000
km), 6 months, 600 engine
hours, or as indicated by the
information display
Inspect the coolant concentration (freeze-point protec-
tion) and additive (corrosion inhibitor) strength. Add
coolant additive if necessary.
Every 30000 miles (48000
km) or 1200 engine hours
Flush and refill the coolant. Do not add coolant additive.
Every 60000 miles (96000
km) or 2400 engine hours
Note: When adding coolant additive, do not exceed the specified maximum of 48 fluid
ounces (1.4 liters) for the engine and 16 fluid ounces (473 ml) for the secondary cooling
system. Operating the engine with excessive coolant additive may cause overheating which
could lead to severe, permanent engine damage.
Note: After the initial coolant flush and fill at 60000 miles (96000 kilometers) or 2400
engine hours, flush and fill every 45000 miles (72000 kilometers) or 1800 engine hours
thereafter.
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F-650/750 (TBC) , enUSA, First Printing Scheduled Maintenance

Rear Axle Maintenance
A rear axle fluid change or level check is
not required unless a leak is suspected or
the assembly has been submerged in
water. During long periods of trailer towing
with outside temperatures above 70°F
(21°C), and at wide-open throttle for long
periods above 45 mph (72 km/h), change
the rear axle fluid every 24,000 mi (38,000
km) or three months, whichever comes
first.
California Fuel Filter Replacement
If you register your vehicle in California, the
California Air Resources Board has
determined that the failure to perform this
maintenance item does not nullify the
emission warranty or limit recall liability
before the completion of your vehicle's
useful life. Ford Motor Company, however,
urges you to have all recommended
maintenance services performed at the
specified intervals and to record all vehicle
service.
Hot Climate Oil Change Intervals
The normal oil change interval is 3000
miles (5000 kilometers) for gasoline
vehicles operating in the Middle East, North
Africa, Sub-Saharan Africa or locations
with similar climates using American
Petroleum Institute (API) oils Certified for
Gasoline Engines and displaying the API
Certification Mark. If API Certified Oils are
not available, then it is acceptable to use
API SM or SN oils. If API oils are not
available, then the oil change interval is
1800 miles (3000 kilometers).
Engine Air Filter Replacement
The life of the engine air filter is dependent
on exposure to dusty and dirty conditions.
Vehicles operated in these conditions
require frequent inspection and
replacement of the engine air filter and
cabin air filter.
Diesel Particulate Filter
The filter may need to be removed for ash
cleaning at approximately 120000 miles
(192000 kilometers) or greater (actual
mileage can vary greatly depending upon
engine and vehicle operating conditions)
and replaced with a new or
re-manufactured (ash cleaned) part. The
filter may need to be replaced at
approximately 250000 miles (400000
kilometers) depending upon engine and
vehicle operating conditions. In both cases,
the engine control system sets a service
light (wrench icon) to inform you to bring
your vehicle to the dealer for service. If
there are any issues with the oxidation
catalyst or particulate filter system, a
service light (wrench or engine icon) sets
by the engine control system to inform you
to bring your vehicle into a dealer for
service.
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F-650/750 (TBC) , enUSA, First Printing Scheduled Maintenance

2
2-Speed Rear Axle........................................118
Axle Shifting.......................................................... 118
A
A/C See: Climate Control........................................... 70
About This Manual...........................................7
Diesel Engine Information................................... 8
Minor Troubleshooting Guide............................ 9
Warnings.................................................................... 8
ABS See: Brakes............................................................ 119
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes................................................................ 120
Accessories.....................................................312
Accessories See: Replacement Parts
Recommendation............................................ 13
Adjusting the Headlamps........................205 Horizontal Aim Adjustment.......................... 206
Vertical Aim Adjustment................................ 205
Adjusting the Steering Wheel
...................44
Air Brakes.........................................................123 Air Chamber Stroke Indication...................... 124
Cam Brakes - Automatic Slack Adjusters........................................................... 124
Emergency Air Brake.......................................... 124
Air Conditioning See: Climate Control........................................... 70
Air Filter See: Changing the Engine Air Filter - 6.7L
Diesel.................................................................. 210
See: Changing the Engine Air Filter - 6.8L.................................................................... 209
Air Induction System Inspection.............217 Chassis-mounted Charge Air Cooler...........218
Air Suspension
...............................................136
Air Suspension Dump Button........................ 136
Connecting and Disconnecting a Trailer with Air Suspension and Air Suspension
Dump Button................................................... 136
Suspension Conversions................................. 136
System Indicator Light...................................... 136
Appendices....................................................348 Audible Warnings and Indicators..............61
Beltminder Warning............................................. 61
Door Ajar................................................................... 61
Headlamps On Warning Chime....................... 61
Key in Ignition Warning Chime......................... 61
Parking Brake On Warning Chime................... 61
Audio Control
..................................................44
Media........................................................................\
45
Seek, Next or Previous........................................ 45
Audio Input Jack...........................................279
Audio System
.................................................272
General Information.......................................... 272
Audio Unit - Vehicles With: AM/FM/CD/ SYNC..............................................................274
Audio Unit - Vehicles With: AM/FM
......273
Automatic Transmission.............................112
Brake-Shift Interlock.......................................... 115
If Your Vehicle Gets Stuck In Mud or Snow................................................................... 116
Understanding the Shift Positions of a 6– Speed Automatic Transmission..........112
Understanding your SelectShift™ Automatic transmission............................... 113
Automatic Transmission Fluid Check.............................................................198
Transmission Fluid Level................................. 199
Auxiliary Power Points..................................81 110 Volt AC Power Points.................................... 81
12 Volt DC Power Point........................................ 81
Locations.................................................................. 81
Auxiliary Switches
........................................312
Axle Inspection.............................................222
Front Axle.............................................................. 222
B
Battery See: Changing the 12V Battery..................... 203
Bonnet Lock See: Opening and Closing the Hood............181
Booster Seats..................................................25 Types of Booster Seats...................................... 25
Brake Fluid Check.......................................200
Brakes................................................................119 General Information........................................... 119
Brake System Inspection...........................219 Air Brakes............................................................... 219
Driveline Parking Brake..................................... 221
371
F-650/750 (TBC) , enUSA, First Printing Index

Draining the Fuel Filter Water Trap - 6.7L
Diesel.............................................................202
Draining the Diesel Fuel Conditioner Module (DFCM)............................................................. 202
Driving Aids.....................................................134
Driving Hints...................................................143
Driving Through Water................................147 Operation in Standing Water.......................... 147
DRL See: Daytime Running Lamps......................... 48
E
Economical Driving......................................144
Electrical System Inspection
....................217
Accessory Feed Connections.......................... 217
Electronic Locking Differential..................117 Activating the Locking Differential...............118
Driver-Controlled Locking Differential.........117
Servicing a Vehicle with a Locking
Differential........................................................ 118
Emission Control System - Diesel..........105 Oxidation Catalytic Converter and Diesel
Particulate Filter System............................ 105
Emission Control System - Gasoline........................................................103
On-Board Diagnostics (OBD-II)................... 104
Readiness for Inspection and Maintenance (I/M) Testing................................................... 105
End User License Agreement.................348 SYNC End User License Agreement
(EULA).............................................................. 348
Engine Block Heater
.....................................88
Rapid Heat Supplemental Heating
System................................................................ 89
Using the Engine Block Heater....................... 89
Engine Coolant Check - 6.7L Diesel.............................................................194
Adding Coolant................................................... 195
Checking Coolant Corrosion Inhibitor Additive Strength .......................................... 197
Coolant Change.................................................. 198
Engine and Secondary Cooling System Refill Procedure.............................................. 196
Engine-driven Cooling Fan (Fan Clutch)............................................................... 198
Recycled Coolant................................................ 197
Severe Climates................................................... 197Engine Coolant Check - 6.8L...................189
Adding Coolant................................................... 190
Coolant Change.................................................. 192
Engine Coolant Temperature Management................................................... 193
Engine-driven Cooling Fan (Fan Clutch)............................................................... 192
Fail-Safe Cooling................................................ 192
Recycled Coolant................................................. 191
Severe Climates.................................................. 192
Engine Idle Shutdown..................................88
Engine Immobilizer See: Passive Anti-Theft System..................... 42
Engine Oil Check - 6.7L Diesel.................186 Adding Engine Oil............................................... 187
Engine Oil Check - 6.8L
..............................185
Adding Engine Oil............................................... 185
Engine Oil Dipstick - 6.7L Diesel.............185
Engine Oil Dipstick - 6.8L..........................185
Engine Specifications - 6.7L Diesel
.......252
Drivebelt Routing............................................... 252
Engine Specifications - 6.8L
....................252
Drivebelt Routing............................................... 252
Entering, Exiting or Climbing on This Vehicle..............................................................15
Environment.....................................................16
Essential Towing Checks...........................140 Before Towing a Trailer..................................... 140
Hitches................................................................... 140
Safety Chains....................................................... 140
Trailer Brakes....................................................... 140
Trailer Lamps....................................................... 140
When Towing a Trailer...................................... 140
Event Data Recording See: Data Recording............................................. 12
Exhaust Brake................................................124 Exhaust Brake Operating
Characteristics................................................ 126
Exhaust System Inspection......................218
Export Unique Options.................................14
Exterior Mirrors
.................................................51
Auxiliary Convex Mirrors...................................... 51
Clearance Lamps................................................. 52
Foldaway Exterior Mirrors...................................51
Heated Exterior Mirrors...................................... 52
Power Exterior Mirrors......................................... 51
Signal Indicator Mirrors...................................... 52
Telescoping Mirrors.............................................. 52
373
F-650/750 (TBC) , enUSA, First Printing Index