differential FORD F650/750 2023 Owners Manual

Pneumatic Locking Differ-
ential
What Is the Pneumatic Locking
Differential .................................................135
How Does the Pneumatic Locking
Differential Work ......................................135
Pneumatic Locking Differential
Precautions ................................................135
Switching the Pneumatic Locking
Differential On and Off ..........................135
Pneumatic Locking Differential
Indicators ....................................................136
Brakes
General Information ....................................137
Hints on Driving With Anti-Lock Brakes
.........................................................................138
Parking Brake ................................................138
Hill Start Assist ..............................................141
Air Brakes ........................................................142
Exhaust Brake ...............................................143
Trailer Brakes .................................................145
Traction Control
Principle of Operation ...............................149
Using Traction Control - Vehicles With:
Air Brakes ...................................................149
Using Traction Control - Vehicles With:
Hydraulic Brakes ......................................149
Stability Control
Principle of Operation - Vehicles With:
Hydraulic Brakes .......................................151
Principle of Operation - Vehicles With:
Air Brakes ....................................................152
Using Stability Control ...............................153
Cruise Control - Vehicles With:
Adaptive Cruise Control
Using Adaptive Cruise Control ................155
Cruise Control - Vehicles With:
Cruise Control
What Is Cruise Control ................................161
Switching Cruise Control On and Off
..........................................................................161
Setting the Cruise Control Speed ..........161
Canceling the Set Speed ..........................162
Resuming the Set Speed ..........................162
Cruise Control Indicators ..........................162
Driving Aids
Driver Alert .....................................................163
Lane Keeping System ................................164
Steering ...........................................................167
Pre-Collision Assist - Vehicles With: Air
Brakes ..........................................................168
Pre-Collision Assist - Vehicles With:
Hydraulic Brakes ......................................170
Load Carrying
Load Limit .......................................................175
Air Suspension ..............................................176
Towing
Towing a Trailer .............................................178
Recommended Towing Weights ............179
Essential Towing Checks .........................180
Fifth Wheel Operation ................................181
Driving Hints
General Driving Points ...............................183
Economical Driving .....................................184
Cold Weather Precautions .......................184
Breaking-In ....................................................186
Driving Through Water ...............................187
Roadside Emergencies
Roadside Assistance .................................188
Hazard Flashers ...........................................189
Fuel Shutoff ..................................................189
3
Table of Contents

Door Ajar
Displays when the ignition is on
and any door is not completely
closed.
Electronic Locking Differential (If
Equipped)
E163170
Illuminates when using the
electronic locking differential.
Engine Coolant Temperature
If it illuminates when your vehicle
is moving, this indicates that the
engine is overheating. Stop your
vehicle as soon as it is safe to do so and
switch the engine off. Have your vehicle
checked as soon as possible. See Engine
Coolant Check (page 238). idk
Engine Oil Pressure
If it illuminates with the engine
running, or when you are driving,
this indicates a malfunction.
Stop your vehicle as soon as it is safe to
do so and switch off the engine. Check the
engine oil level.
Note:Do not resume your journey if it
illuminates despite the level being correct.
Have the system checked as soon as
possible.
Exhaust Brake On (If Equipped)
E171217
The exhaust brake indicator light
illuminates when you switch the
exhaust brake on.
Fasten Seatbelt
E71880
Illuminates and a tone sounds
to remind you to fasten your
seatbelt.
High Beam
Illuminates when you switch on
the high beam headlamps. It
flashes when you use the
headlamp flasher.
Hydromax
E146190
If the light illuminates and
remains on when the key is in the
on position or the engine is
running, this indicates inadequate hydraulic
booster pressure or reserve pump system
failure. Stop the vehicle as soon as
possible and have your vehicle checked.
Low Fuel Level
Illuminates when the fuel level
is low or the fuel tank is nearly
empty. Refuel as soon as
possible.
Parking Brake Warning
E208810
Briefly illuminates when you
switch the ignition to the on
position, with the engine off. It
also illuminates when you apply the
parking brake. If the park brake lamp does
not illuminate at these times, seek
immediate service. Vehicles with the power
parking brake option: If the park brake
warning lamp begins to blink after setting
the parking brake, this may indicate a
failure in the parking brake system. Have
the system checked as soon as possible.
Driving extended distances with the
parking brake engaged can cause brake
failure and the risk of personal injury.
Parking Lamps
Illuminates when you switch the
low beam headlamps or the
parking lamps on.
67
Instrument Cluster

Driver Alert
Action Message
Stop and rest as soon as it is safe to do so. Driver Alert Warning Rest Now
Take a rest soon. Driver Alert Warning Rest Suggested
Drivetrain
Action Message
The electronic locking differential requires
service. Have the system checked as soon
as possible. Check Locking Differential
Engine
Action Message
The engine has reduced power to help
reduce high engine temperature. Have the
system checked as soon as possible. Power Reduced to Lower Engine Temp
Fuel
Action Message
An early reminder of a low fuel condition.
Refuel your vehicle. Fuel Level Low
A fuel fill inlet may not be properly closed. Check Fuel Fill Inlet
80
Information Displays

WHAT IS THE PNEUMATIC
LOCKING DIFFERENTIAL
The pneumatic locking differential can lock
or unlock the differential when the vehicle
is moving or stopped. The differential lock
provides full power to both wheels when
extra traction is required.
HOW DOES THE PNEUMATIC
LOCKING DIFFERENTIAL
WORK
If your vehicle is equipped with a
pneumatic locking differential:
• Power is transmitted to the opposite
wheel should one of the wheels begin
to slip.
• Raise both wheels off the ground if it
becomes necessary to operate one
wheel with the vehicle stationary.
The differential can be locked or unlocked
when the vehicle is moving at a constant
speed of less than 25 mph (40 km/h) and
while the wheels are not slipping. Do not
lock the differential when the vehicle is
traveling down steep grades and traction
is minimal.
Note:Do not use the differential lock at
vehicle speeds above 25 mph (40 km/h).
When the differential is locked, the
vehicle’s turning radius increases causing
understeer.
The differential lock and differential lock
light automatically disengage at speeds
above 25 mph (40 km/h). The differential
lock remains off until the vehicle is
restarted or the differential lock switch is
turned off then back on.
PNEUMATIC LOCKING
DIFFERENTIAL PRECAUTIONS
WARNING: Exceeding any vehicle
weight rating can adversely affect the
performance and handling of your
vehicle, cause vehicle damage and can
result in the loss of control of your
vehicle, serious personal injury or death.
WARNING: Failure to raise all drive
wheels with this type of differential could
cause the vehicle to move unexpectedly,
resulting in property damage, personal
injury or death.
WARNING: Sudden acceleration
on slippery surfaces could cause the
wheels to spin, the vehicle to turn
sideways on a crowned road surface or
in a turn, possibly resulting in loss of
vehicle control and personal injury.
SWITCHING THE PNEUMATIC
LOCKING DIFFERENTIAL ON
AND OFF
Press and hold the button on the dash to
turn the system on or off.
E366571E366571E366E366E366E366E366E36666E366E366E366EE36611571571571571557171571571571
135
Pneumatic Locking Differential

PNEUMATIC LOCKING
DIFFERENTIAL INDICATORS
E163170
Illuminates when using the
electronic locking differential.
136
Pneumatic Locking Differential

inspection and keep to instructions
provided by the service manual.
Hydraulic brake systems are
power-assisted. There is a great
reduction in braking capabilities
without engine assist.
• Proper fluid level. The level should be
at the bottom edge of the ring on each
reservoir fill port. Do not fill the master
cylinder to the top of the reservoir. If
fluid level requires attention to
maintain a proper master cylinder level,
this is an indication of either severe
operation (pad wear) or fluid leakage.
A more frequent and thorough brake
inspection is required.
• Brake lines, hoses and fittings. Repair
or replace brake line tubes, hoses or
fittings as required. Inspect these
components every 4,000 mi
(6,000 km) for the following.
• Lines for kinks, dents, corrosion or
rupture.
• Hoses for abrasions, kinks, soft
spots or rupture, collapse, cracks,
twists or loose frame supports.
When replacing a hose, be sure
there is adequate clearance to the
hose to avoid an abrasion to the
new hose.
• All connections for leaks.
Driveline Parking Brake
WARNING: Use wheel chocks and
exercise caution when inspecting under
the vehicle. A vehicle roll-away could
result in property damage, personal injury
or death.
A qualified technician should adjust the
parking brake and keep to the instructions
in the service manual.
AXLE INSPECTION
Front Axle
Maintaining the front axle alignment to
specifications is very important. A qualified
technician should check and maintain the
alignment.
Regular inspections should include:
• Toe-in inspection and adjustment (if
necessary), particularly with radial
tires.
• Checking for proper tightness of axle
mounting U-bolt nuts, attaching or
mounting bolts and nuts.
• Checking the axle for damage, binding,
worn parts and adequate lubrication.
• Checking the kingpins for excessive
wear. Also, perform this check during
other scheduled maintenance, for
example as tire rotation or service,
wheel bearing service and alignment.
See the workshop manual for proper
procedures.
Toe-in
It is essential to maintain correct toe-in
and tire pressure for optimum tire wear.
Inspecting steer axle tires in the first
3,000–10,000 mi (5,000–16,000 km)
generally shows if tires are wearing
normally.
Rapid outside shoulder wear on both tires
indicates too much toe-in.
Rapid inside shoulder wear on both tires
indicates too much toe-out.
In P&D-type service, there can be a
left-to-right steer tire tread life differential
up to 40% depending on routes and other
variables.
258
Maintenance

Engine Oil Capacity and Specification -
7.3L.................................................................295
Engine Oil Check - 6.7L Diesel.................224
Engine Oil Check - 7.3L..............................225
Engine Oil Dipstick - 6.7L Diesel.............224
Engine Oil Dipstick - 7.3L...........................224
Engine Specifications - 6.7L
Diesel............................................................288
Engine Specifications - 7.3L....................289
Entering, Exiting or Climbing on This
Vehicle.............................................................20
Environment......................................................21
Essential Towing Checks..........................180
Event Data Recording
See: Data Recording.............................................13Exhaust Brake................................................143
Exhaust System Inspection.....................255
Export Unique Options................................20
Exterior Mirrors...............................................60
F
Fastening the Seatbelts..............................38
Federal Highway Administration
Regulation......................................................20
Fifth Wheel Operation.................................181
Flat Tire
See: Changing a Road Wheel.......................284Ford Credit..........................................................17
Ford Protect....................................................317
Frame and Tow Hook Inspection..........260
Front Seat Armrest........................................94
Fuel and Refueling.......................................105
Fuel Consumption.........................................113
Fuel Filter - 7.3L............................................249
Fuel Quality - Diesel....................................106
Fuel Quality - Gasoline..............................109
Fuel Shutoff...................................................189
Fuel Tank Capacity - Diesel.....................298
Fuel Tank Capacity - Gasoline...............299
Fuel Tank Selector Switch..........................114
Fuses................................................................200
Fuse Specification Chart..........................200
G
Gauges...............................................................63Gearbox
See: Transmission..............................................128General Driving Points................................183
General Information on Radio
Frequencies...................................................45
General Maintenance Information........319
Getting Assistance Outside the U.S. and
Canada..........................................................197
Getting the Services You Need...............194
H
HandbrakeSee: Parking Brake.............................................138Hazard Flashers............................................189
Headlamp Adjusting
See: Adjusting the Headlamps.....................247Headlamp Exit Delay....................................55
Headlamp Removal
See: Removing a Headlamp..........................250HeadrestSee: Head Restraints..........................................88Head Restraints..............................................88
Heated Exterior Mirrors................................87
Heating
See: Climate Control...........................................85Hill Start Assist...............................................141
Hints on Controlling the Interior
Climate...........................................................86
Hints on Driving With Anti-Lock
Brakes............................................................138
Hood Lock
See: Opening and Closing the Hood..........220Horn.....................................................................52
How Does the Pneumatic Locking
Differential Work........................................135
Hydraulic Power Steering Fluid Capacity
and Specification.....................................306
I
Ignition Switch..............................................100
In California (U.S. Only).............................195
Information Display Control.......................52
Information Displays.....................................70
General Information............................................70Information Messages..................................74
Installing Child Restraints...........................26
371
Index

Instrument Cluster.........................................63
Instrument Lighting Dimmer.....................55
Instrument Panel............................................23
Interior Lamps..................................................57
Interior Mirror...................................................62
Introduction.........................................................7
J
Jump Starting the Vehicle.........................190
K
Keys and Remote Controls.........................45
L
Lane Keeping System.................................164
Lighting Control..............................................54
Lighting..............................................................54
General Information............................................54Load Carrying..................................................175
Load Limit........................................................175
Locating the USB Ports................................97
Locking and Unlocking................................48
Lug Nuts
See: Changing a Road Wheel.......................284
M
Maintenance..................................................219General Information..........................................219Manual Climate Control..............................85
Manual Seats..................................................90
Message Center
See: Information Displays.................................70MirrorsSee: Windows and Mirrors................................59Mobile Communications Equipment......19
Motorcraft Parts - 6.7L Diesel.................290
Motorcraft Parts - 7.3L................................291
N
Noise Pollution Control.................................21
Normal Scheduled Maintenance...........323
O
Oil Change Indicator Reset.......................227
Oil Check
See: Engine Oil Check - 6.7L Diesel.............224
See: Engine Oil Check - 7.3L...........................225
Opening and Closing the Hood..............220
Ordering Additional Owner's
Literature......................................................198
Overhead Console.........................................99
P
Parking Brake.................................................138
Passive Anti-Theft System........................50
PAT S
See: Passive Anti-Theft System.....................50Perchlorate.........................................................17
Playing Media From a USB Device.........312
Playing Media Using the USB Port...........97
Pneumatic Locking Differential
Indicators......................................................136
Pneumatic Locking Differential...............135
Pneumatic Locking Differential
Precautions..................................................135
Power Door Locks
See: Locking and Unlocking.............................48Power Seats......................................................91
Power Steering Fluid Check.....................245
Power Take-Off.............................................133
Power Windows..............................................59
Pre-Collision Assist - Vehicles With: Air
Brakes............................................................168
Pre-Collision Assist - Vehicles With:
Hydraulic Brakes........................................170
Protecting the Environment........................21
Puncture
See: Changing a Road Wheel.......................284
R
Radio Frequency Certification
Labels...........................................................338
Cruise Control Module.....................................338Rear Axle Fluid Capacity and
Specification - Diesel..............................304
Rear Axle Fluid Capacity and
Specification - Gasoline........................305
372
Index

Rear Axle Fluid Check................................260
Rear Axle..........................................................134
General Information..........................................134Rear Seat Armrest.........................................94
Rear Seats.........................................................93
Recommended Towing Weights.............179
Refueling - Diesel..........................................110
Refueling - Gasoline.....................................112
Remote Control..............................................46
Removing a Headlamp.............................250
Repairing Minor Paint Damage..............266
Replacement Parts
Recommendation.........................................17
Replacing a Lost Key or Remote
Control.............................................................47
Reporting Safety Defects (Canada
Only)..............................................................199
Reporting Safety Defects (U.S.
Only)..............................................................198
Resuming the Set Speed...........................162
Roadside Assistance..................................188
Roadside Emergencies..............................188
Rollover Warning.........................................338
Running-In
See: Breaking-In..................................................186Running Out of Fuel - Diesel.....................110
Running Out of Fuel - Gasoline................110
S
Safety Precautions......................................105
Scheduled Maintenance............................319
Seatbelt Extensions......................................44
Seatbelt Height Adjustment.......................41
Seatbelt Reminder.........................................42
Seatbelts............................................................37
Principle of Operation.........................................37Seatbelt Warning Lamp and Indicator
Chime...............................................................42
Seats...................................................................88
Security..............................................................50
Selective Catalytic Reductant System -
Diesel...............................................................118
Setting the Cruise Control Speed...........161
Sitting in the Correct Position...................88
Snow Chains
See: Using Snow Chains.................................284
Spare WheelSee: Changing a Road Wheel.......................284Special Notices................................................18
Special Operating Conditions Scheduled
Maintenance...............................................329
Speed Control
See: Cruise Control - Vehicles With: Adaptive
Cruise Control.................................................155
See: Cruise Control - Vehicles With: Cruise
Control................................................................161
Spring U-Bolt Check..................................260
Stability Control.............................................151
Principle of Operation - Vehicles With: Air
Brakes.................................................................152
Principle of Operation - Vehicles With:
Hydraulic Brakes.............................................151
Starter SwitchSee: Ignition Switch..........................................100Starting a Gasoline Engine........................101
Starting and Stopping the Engine.........100
General Information.........................................100
Starting the Engine............................................102
Starting the Engine......................................102Starting a Diesel Engine...................................102Steering............................................................167
Steering System Inspection....................259
Steering Wheel.................................................51
Storage Compartments..............................99
Streaming Bluetooth Audio......................312
Sun Visors.........................................................62
Suspension System Inspection..............259
Switching Cruise Control On and
Off....................................................................161
Switching Off the Engine...........................102
Switching the Pneumatic Locking
Differential On and Off............................135
Symbols Glossary...........................................10
T
Technical SpecificationsSee: Capacities and Specifications............288The Better Business Bureau (BBB) Auto
Line Program (U.S. Only).......................196
Tire Care..........................................................269
Tires
See: Wheels and Tires.....................................269Towing a Trailer..............................................178
373
Index

Towing Points................................................193
Towing...............................................................178
Traction Control............................................149
Principle of Operation.......................................149Trailer Brakes..................................................145
Transmission..................................................128
Transporting the Vehicle............................192
U
Under Hood Overview - 6.7L
Diesel.............................................................222
Under Hood Overview - 7.3L....................223
USB Ports..........................................................97
USB Port..........................................................314
Using Adaptive Cruise Control.................155
Using Snow Chains.....................................284
Using Stability Control................................153
Using Traction Control - Vehicles With:
Air Brakes......................................................149
Using Traction Control - Vehicles With:
Hydraulic Brakes........................................149
Using Voice Recognition............................314
V
Vehicle Care...................................................262General Information.........................................262Vehicle Identification Number................307Locating the Vehicle Identification
Number.............................................................307
Vehicle Identification Number
Overview..........................................................307
Vehicle Identification..................................307Vehicle Identification Number......................307Vehicle Inspection Guide...........................210
Vehicle Inspection Information...............210
Vehicle Storage.............................................267
Ventilation
See: Climate Control...........................................85
W
Warning Lamps and Indicators................66
Washer Fluid Check....................................249
Washer Fluid Specification.......................301Washers
See: Cleaning the Exterior..............................263
See: Wipers and Washers.................................53
Waxing.............................................................264
What Is Cruise Control.................................161
What Is the Pneumatic Locking
Differential....................................................135
Wheel Nuts
See: Changing a Road Wheel.......................284Wheels and Tires.........................................269Technical Specifications.................................286Windows and Mirrors....................................59
Windshield Washers.....................................53
Windshield Wipers.........................................53
Wiper Blades
See: Checking the Wiper Blades..................249Wipers and Washers.....................................53
374
Index