2021 FORD F650/750 air suspension

Operating in Dusty or Sandy Conditions, Such as Unpaved or Dusty Roads
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Change the engine oil and filter. 2
Every 7,500 mi (12,000 km),
six months or 300 engine
hours Inspect and lubricate the U-joints.
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), 6 months or
600 engine hours
Replace the air inlet foam filter.
Every
30,000 mi
(48,000 km)
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate
the rear wheels if you notice unusual wear.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes. Off-road Operation
Inspect functional holes in each leg of the twin exhaust
tips and the holes under the shield just inboard of the right
rear tire to make sure they are clean and clear of debris or
foreign materials. Refer to the Vehicle Care chapter of your
owner ’s manual for more information.
As required
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Rotate the tires1
, inspect the tires for wear and measure
tread depth.
Every 7,500 mi (12,000 km),
six months or 300 engine
hours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Change the engine oil and filter. 2
Every 7,000 mi (12,000 km)
or 300 engine hours
335
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Scheduled Maintenance

2
2-Speed Rear Axle.......................................129
Axle Shifting......................................................... 129
A
A/C See: Climate Control........................................... 79
About This Manual
...........................................7
Diesel Engine Information................................... 8
Minor Troubleshooting Guide............................ 9
Warnings.................................................................... 8
ABS See: Brakes........................................................... 130
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes.................................................................. 131
Accessories.....................................................315
Accessories See: Replacement Parts
Recommendation............................................. 17
ACC See: Using Adaptive Cruise Control............148
Adjusting the Headlamps........................240 Horizontal Aim Adjustment............................ 241
Vertical Aim Adjustment................................ 240
Adjusting the Steering Wheel
....................52
Air Brakes.........................................................135
Air Chamber Stroke Indication...................... 135
Cam Brakes - Automatic Slack Adjusters........................................................... 136
Emergency Air Brake......................................... 136
Air Conditioning See: Climate Control........................................... 79
Air Filter See: Changing the Engine Air Filter - 6.7L
Diesel.................................................................. 221
See: Changing the Engine Air Filter - 7.3L...................................................................... 223
Air Induction System Inspection............247 Chassis-mounted Charge Air Cooler..........247
Air Suspension
..............................................169
Air Suspension Dump Button........................ 169
Connecting and Disconnecting a Trailer with Air Suspension and Air Suspension
Dump Button.................................................. 169
Suspension Conversions................................. 169System Indicator Light.....................................
169
Appendices....................................................348
At a Glance
........................................................22
Audible Warnings and Indicators.............69 Headlamps On Warning Chime..................... 69
Key in Ignition Warning Chime........................ 69
Parking Brake On Warning Chime.................69
Audio System
................................................307
General Information......................................... 307
Audio Unit
.......................................................307
Accessing the Sound Settings..................... 308
Accessing the System Settings................... 308
Adjusting the Volume...................................... 308
Changing Radio Stations............................... 308
Pausing or Playing Media............................... 308
Returning to the Previous Screen...............308
Scrolling Through the Menu Options........308
Selecting a Menu Option............................... 309
Selecting Media................................................. 308
Selecting the Radio.......................................... 309
Setting a Memory Preset............................... 309
Switching the Audio Unit On and Off........309
Using a Cell Phone........................................... 309
Using Seek, Fast Forward and Reverse............................................................. 309
Autolamps........................................................56 Windshield Wiper Activated
Headlamps........................................................ 56
Automatic High Beam Control..................57 Automatic High Beam Indicator..................... 58
Switching the System On and Off.................57
Automatic Transmission............................122 Brake-Shift Interlock......................................... 125
If Your Vehicle Gets Stuck in Mud or Snow................................................................... 126
Progressive Range Selection - PRS.............125
Understanding the Shift Positions of a 6– Speed Automatic Transmission.........122
Understanding Your SelectShift™ Automatic Transmission............................. 123
Automatic Transmission Fluid Check............................................................236
Transmission Fluid Level................................. 236
Auxiliary Power Points
.................................89
110 Volt AC Power Point.................................... 89
12 Volt DC Power Point...................................... 89
Locations................................................................ 89
377
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index

Spare Wheel
See: Changing a Road Wheel........................ 277
Special Notices................................................18
New Vehicle Limited Warranty........................ 18
Notice to Owners of Pickup Trucks and Utility Type Vehicles........................................ 18
On Board Diagnostics Data Link Connector........................................................... 18
Special Instructions............................................. 18
Using your Vehicle as an Ambulance............19
Using Your Vehicle With a Snowplow...........19
Special Operating Conditions Scheduled Maintenance...............................................329
Diesel Engine........................................................ 331
Exceptions............................................................ 336
Gasoline Engines............................................... 329
Speed Control See: Cruise Control - Vehicles With: Adaptive
Cruise Control................................................. 148
See: Cruise Control - Vehicles With: Cruise Control............................................................... 154
Spring U-Bolt Check
...................................253
U-bolt Nut Torque............................................. 254
Stability Control
............................................144
Principle of Operation - Vehicles With: Air
Brakes................................................................ 145
Principle of Operation - Vehicles With: Hydraulic Brakes............................................ 144
Starter Switch See: Ignition Switch............................................. 93
Starting a Diesel Engine..............................95 Cold Weather Starting....................................... 95
Diesel Engine Fast Start Glow Plug System................................................................ 95
Starting a Gasoline Engine.........................94 Failure to Start...................................................... 94
Guarding Against Exhaust Fumes.................94
Important Ventilating Information................95
Stopping the Engine When Your Vehicle is Moving................................................................. 94
Stopping the Engine When Your Vehicle is Stationary.......................................................... 94
Starting and Stopping the Engine...........93 General Information............................................ 93
Steering............................................................160 Hydraulic Power Steering................................ 160
Steering System Inspection.....................252 Hydraulic System............................................... 252Steering Column Joint Bolts..........................
252
Steering Wheel
................................................52
Storage Compartments..............................92
Streaming Bluetooth Audio......................313 Selecting a Bluetooth Source........................ 313
Sun Visors
.........................................................62
Slide-on-rod........................................................... 62
Suspension System Inspection..............252
Switching Cruise Control On and Off...................................................................154
Switching Cruise Control Off......................... 154
Switching Cruise Control On.......................... 154
Switching Off the Engine............................96
Symbols Glossary
...........................................10
T
Technical Specifications See: Capacities and Specifications.............281
The Better Business Bureau (BBB) Auto Line Program (U.S. Only).......................189
Tire Care..........................................................262 Glossary of Tire Terminology......................... 262
Information Contained on the Tire Sidewall............................................................ 262
Tires See: Wheels and Tires..................................... 262
Towing a Trailer
...............................................171
Load Placement................................................... 171
Towing Points
................................................186
Towing................................................................171
Traction Control............................................142
Principle of Operation....................................... 142
Trailer Brakes
..................................................138
Trailer Air Supply and Parking Brake
Modular Controls........................................... 138
Trailer Brake Hand Control.............................. 138
Transmission Code Designation............287
Transmission
...................................................122
Transporting the Vehicle...........................185
U
Under Hood Overview - 6.7L Diesel.......215
Under Hood Overview - 7.3L
.....................216
USB Ports...........................................................91
Using Adaptive Cruise Control................148 Automatic Cancellation.................................... 151
385
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index

Blocked Sensor....................................................
152
Canceling the Set Speed................................. 150
Changing the Set Speed................................. 150
Detection Issues................................................... 151
Following a Vehicle............................................ 149
Hilly Condition and Trailer Tow Usage.........151
Overriding the Set Speed................................ 150
Resuming the Set Speed.................................. 151
Setting the Adaptive Cruise Speed.............149
Setting the Gap Distance................................ 150
Switching Adaptive Cruise Control Off........................................................................\
. 151
Switching Adaptive Cruise Control On........................................................................\
148
System Not Available........................................ 152
Using Snow Chains......................................277
Using Stability Control...............................146
Using Traction Control - Vehicles With: Air Brakes
......................................................142
System Indicator Light...................................... 142
Using Traction Control - Vehicles With: Hydraulic Brakes........................................142
System Indicator Light...................................... 143
Using Voice Recognition............................313 Phone Voice Service.......................................... 313
V
Vehicle Care
...................................................255
General Information......................................... 255
Vehicle Identification Number
...............286
Vehicle Inspection Guide..........................203
Vehicle Inspection Information..............203
Trailer...................................................................... 210
Transmission........................................................ 210
Vehicle Storage............................................260 Body....................................................................... 260
Brakes..................................................................... 261
Cooling system................................................... 260
Disconnecting Your 12 Volt Battery............260
Engine.................................................................... 260
Fuel system......................................................... 260
General.................................................................. 260
Miscellaneous...................................................... 261
Removing Vehicle From Storage.................. 261
Tires........................................................................\
. 261
Ventilation See: Climate Control........................................... 79VIN
See: Vehicle Identification Number............286
W
Warning Lamps and Indicators................66 Anti-Lock Braking System................................ 66
Automatic Regeneration Control................... 66
Battery..................................................................... 66
Brake System........................................................ 66
Check Suspension............................................... 66
Cruise Control....................................................... 66
Diesel Exhaust Fluid........................................... 66
Direction Indicator............................................... 66
Door Ajar.................................................................. 67
Electronic Locking Differential........................ 67
Engine Coolant Temperature........................... 67
Engine Oil Pressure.............................................. 67
Exhaust Brake On................................................. 67
Fasten Seatbelt..................................................... 67
High Beam............................................................... 67
Hydromax................................................................ 67
Low Fuel Level....................................................... 67
Parking Brake Warning....................................... 67
Parking Lamps....................................................... 67
Powertrain Malfunction/Reduced Power/Electronic Throttle Control...........68
Service Engine Soon........................................... 68
Stability Control Indicator................................ 68
Traction Control Indicator................................. 68
Traction Control System Off........................... 68
Trailer Anti-Lock Brake System (ABS) ................................................................... 68
Transmission Tow/Haul.................................... 69
Two Speed Axle.................................................... 69
Wait to Start.......................................................... 69
Water in Fuel.......................................................... 69
Washer Fluid Check....................................242
Washers See: Cleaning the Exterior.............................. 256
See: Wipers and Washers................................. 54
Waxing..............................................................257
What Is Cruise Control................................154 Requirements.......................................................154
Wheel Nuts See: Changing a Road Wheel........................ 277
Wheels and Tires
.........................................262
Technical Specifications................................. 279
386
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index