2023 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.
2Every 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)
1Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate
the rear wheels if you notice unusual wear.
2Reset 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 tires
1, 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.
2Every 7,000 mi (12,000 km)
or 300 engine hours
335
Scheduled Maintenance

2
2-Speed Rear Axle.......................................134
A
A/CSee: Climate Control...........................................85About This Manual...........................................7
ABS
See: Brakes............................................................137ABS driving hintsSee: Hints on Driving With Anti-Lock
Brakes................................................................138
Accessories.....................................................315
Accessories
See: Replacement Parts
Recommendation.............................................17
ACCSee: Using Adaptive Cruise Control.............155Adjusting the Headlamps.........................247
Adjusting the Steering Wheel.....................51
Air Brakes.........................................................142
Air Conditioning
See: Climate Control...........................................85Air Conditioning System Capacity and
Specification - 6.7L Diesel....................300
Air Conditioning System Capacity and
Specification - 7.3L...................................301
Air Filter
See: Changing the Engine Air Filter - 6.7L
Diesel.................................................................228
See: Changing the Engine Air Filter -
7.3L.....................................................................230
Air Induction System Inspection............254
Air Suspension...............................................176
Appendices....................................................343
At a Glance.......................................................23
Audible Warnings and Indicators.............69
Audio Input Jack............................................313
Audio System...............................................309
General Information.........................................309Audio Unit......................................................309
Autolamps........................................................55
Automatic High Beam Control.................56
Automatic Transmission............................128
Automatic Transmission Fluid Capacity
and Specification.....................................302Automatic Transmission Fluid
Check.............................................................242
Auxiliary Power Points.................................95
Auxiliary Switches........................................315
Axle Inspection.............................................258
B
BatterySee: Changing the 12V Battery.....................246Bonnet LockSee: Opening and Closing the Hood..........220Booster Seats..................................................32
Brake Fluid Check........................................244
Brake Fluid Specification..........................303
Brakes................................................................137
General Information...........................................137Brake System Inspection..........................255
Breaking-In.....................................................186
Bulb Specification Chart...........................292
C
Canceling the Set Speed...........................162
Capacities and Specifications...............288
Car Wash
See: Cleaning the Exterior..............................263Catalytic Converter.......................................116
Changing a Bulb..........................................250
Changing a Fuse..........................................208
Changing a Road Wheel...........................284
Changing the 12V Battery.........................246
Changing the Engine Air Filter - 6.7L
Diesel.............................................................228
Changing the Engine Air Filter -
7.3L.................................................................230
Changing the Engine-Mounted and
Diesel Fuel Conditioner Module Fuel
Filters - 6.7L Diesel....................................251
Changing the Engine Oil and Oil
Filter...............................................................226
Changing the Wiper Blades.....................249
Charging a Device..........................................98
Checking the Wiper Blades.....................249
Child Restraint and Seatbelt
Maintenance.................................................44
Child Restraint Positioning.........................34
369
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