differential FORD F650/750 2021 Owners Manual

Interior Mirror
..................................................62
Sun Visors ........................................................
62
Instrument Cluster
Gauges ..............................................................
63
Warning Lamps and Indicators ...............
66
Audible Warnings and Indicators ............
69
Information Displays
General Information .....................................
70
Information Messages .................................
73
Climate Control
Manual Climate Control .............................
79
Hints on Controlling the Interior Climate ........................................................................\
..
80
Heated Exterior Mirrors ................................
81
Seats
Sitting in the Correct Position ..................
82
Head Restraints .............................................
82
Manual Seats .................................................
84
Power Seats ....................................................
85
Rear Seats .......................................................
86
Front Seat Armrest .......................................
87
Rear Seat Armrest ........................................
88
Auxiliary Power Points
Auxiliary Power Points ................................
89
USB Ports
Locating the USB Ports ...............................
91
Charging a Device ..........................................
91
Storage Compartments
Overhead Console ........................................
92
Starting and Stopping the Engine
General Information .....................................
93Ignition Switch
...............................................
93
Starting a Gasoline Engine ........................
94
Starting a Diesel Engine .............................
95
Switching Off the Engine ...........................
96
Engine Idle Shutdown .................................
96
Engine Block Heater .....................................
97
Fuel and Refueling
Safety Precautions .......................................
99
Fuel Quality - Diesel ...................................
100
Fuel Quality - Gasoline ..............................
103
Running Out of Fuel - Diesel ...................
103
Running Out of Fuel - Gasoline .............
104
Refueling - Diesel ........................................
104
Refueling - Gasoline ...................................
105
Fuel Consumption ......................................
106
Fuel Tank Selector Switch .......................
108
Engine Emission Control
Emission Law ................................................
109
Catalytic Converter ......................................
110
Selective Catalytic Reductant System - Diesel .............................................................
112
Diesel Particulate Filter ..............................
116
Transmission
Automatic Transmission ...........................
122
Power Take-Off ............................................
126
Rear Axle
General Information ...................................
128
Electronic Locking Differential ...............
128
2-Speed Rear Axle ......................................
129
Brakes
General Information ...................................
130
Hints on Driving With Anti-Lock Brakes ........................................................................\
..
131
Parking Brake ..................................................
131
Hill Start Assist .............................................
134
2
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Table of Contents

Door Ajar
Displays when the ignition is on
and any door is not completely
closed.
Electronic Locking Differential (If
Equipped) 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 226). 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) The exhaust brake indicator light
illuminates when you switch the
exhaust brake on.
Fasten Seatbelt 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 Illuminates to indicate normal
hydromax booster reserve
system activation when the
engine is off and the service brake pedal is
applied. This light may also illuminate
momentarily if the engine is running and
the driver turns the steering wheel fully in
one direction while braking. If the light
remains on while the engine is running, this
indicates inadequate hydraulic booster
pressure or reserve pump system failure.
Stop the vehicle as soon as possible and
seek service immediately by your
authorized dealer.
Parking Lamps Illuminates when you switch the
parking lamps on.
Low Fuel Level
(If Equipped) Illuminates when the fuel level
is low or the fuel tank is nearly
empty. Refuel as soon as
possible.
Parking Brake Warning Illuminates briefly 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 service
immediately. Vehicles with the power
parking brake option: If the park brake
warning lamp begins to blink after setting
67
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Instrument Cluster E163170 E171217 E71880 E146190 E208810

GENERAL INFORMATION
WARNING: Exceeding these ratings
by overloading can cause component
failure resulting in property damage,
personal injury or death.
Fluid Temperature
If the operating temperature exceeds
250°F (121°C), the rate of axle lubrication
oxidation increases and shortens the life
of the lubricant and seals, requiring axle
lubrication changes to become more
frequent to preserve the axle. Do not
consistently run extreme pressure (EP)
lubricants above
250°F (121°C).
Axle Conversions WARNING:
When operating a
loaded vehicle, the driver must keep all
adjustable axles on the ground at all
times, supporting their share of the
vehicle ’s load. Failure to do so can
overload other axles, tires, wheels,
springs, steering components, brakes
and frames, resulting in early component
failure, loss of vehicle control, possible
property damage and personal injury.
We do not recommend, or approve,
performing axle conversions. However, we
understand that, on occasion, others install
aftermarket add-on axles on the truck
chassis that allow operator control for
weight transfer from other axles (such as
air lift axles). ELECTRONIC LOCKING
DIFFERENTIAL
(IF EQUIPPED)
Driver-Controlled Electronic
Locking Differential
Note: Never use the differential lock at
vehicle speeds above
25 mph (40 km/h).
Some drive axles have a driver-controlled
differential lock. The differential lock can
lock or unlock the differential when your
vehicle is moving or stopped. When you
require extra traction, the differential lock
provides full power to both wheels.
When you lock the differential, your
vehicle ’s turning radius increases
(under-steer).
Take care to avoid sudden accelerations
when both drive wheels are on a slippery
surface. 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.
Activating the Electronic Locking
Differential
You can lock and unlock the differential
when your 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 your vehicle is
traveling down steep grades and when
traction is minimal.
The differential lock and differential lock
light automatically disengage at speeds
above
25 mph (40 km/h). The differential
lock remains off until either you restart your
vehicle, or you turn the differential lock
switch off then back on.
128
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Rear Axle

Servicing a Vehicle with an
Electronic Locking Differential
Turn the engine off and raise all drive
wheels of the locker differential axle to
prevent your vehicle from moving when
servicing the wheels, tires or brakes. Axles
equipped with a driver-controlled
differential deliver power to both wheels
even when only one wheel is on the ground.
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.
2-SPEED REAR AXLE (IF EQUIPPED) WARNING: Never shift a
two-speed axle when descending a
steep grade as this may cause loss of
vehicle control and result in personal
injury.
Note: Do not shift between ranges when
the speed control is on.
A two-speed rear axle allows the driver to
select a low range for greater pulling power
and a high range for greater road speed
and fuel economy. You can also use these
ranges to provide extra steps between
transmission shifts when driving on steep
grades or fuel economy may be factors. Axle Shifting Note:
Do not shift the axle to LOW when
your vehicle is moving. Use LOW when you
drive a fully loaded vehicle on a severe grade
or in congested traffic. Use HIGH for all
normal driving conditions with a lightly
loaded or partially loaded vehicle.
Note: The axle is set to HIGH by default.
To shift the axle between HIGH and LOW
with the vehicle stopped, place the
transmission in position N, then press and
hold the button for two seconds.
129
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Rear AxleE208228

Protected Component
Fuse
Rating
Fuse
Number
Pump electronics module (gas).
30 A
49
Fuel pump (diesel).
Injector power (gas).
15 A
50
Power point #1.
20 A
51
Not used.
—
52
Trailer tow park lamp.
30 A
53
Not used.
—
54
Upfitter relay 3.
20 A
55
Not used.
—
56
USB power.
5 A
58
Not used.
—
59
Dual fuel tank selector switch (diesel).
10 A
60
Not used.
—
61
Not used.
—
62
Driver seat compressor.
20 A
63
Passenger seat compressor.
20 A
64
Not used.
—
65
Four pack solenoid differential lock.
10 A
66
Hydromax relay power.
10 A
67
Not used.
—
69
Inverter.
40 A
70
Anti-lock brake system valves.
30 A
71
Brake on-off switch (hydraulic brakes).
10 A
72
Stop lamp air pressure switch 1 and 2 (air brakes).
Not used.
—
73
Heated mirror.
15 A
74
Not used.
—
75
196
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses

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.
251
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Maintenance

Driving Aids.....................................................156
Driving Hints....................................................176
Driving Through Water...............................180
Operation in Standing Water......................... 180
DRL See: Daytime Running Lamps......................... 57
E
Economical Driving.......................................177
Electrical System Inspection...................247 Accessory Feed Connections........................ 247
Electromagnetic Compatibility
..............348
Electronic Locking Differential................128 Activating the Electronic Locking
Differential....................................................... 128
Driver-Controlled Electronic Locking Differential....................................................... 128
Servicing a Vehicle with an Electronic Locking Differential....................................... 129
Emission Law.................................................109 Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance...........110
Tampering With a Noise Control System.............................................................. 109
End User License Agreement...................351 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) .................................. 351
Engine Block Heater
......................................97
Using the Engine Block Heater........................ 97
Engine Coolant Check - 6.7L Diesel.......231 Adding Coolant.................................................... 231
Checking Coolant Corrosion Inhibitor Additive Strength ......................................... 234
Coolant Change.................................................. 235
Engine and Secondary Cooling System Refill Procedure............................................. 233
Engine-driven Cooling Fan (Fan Clutch).............................................................. 235
Recycled Coolant............................................... 233
Severe Climates................................................. 234
Engine Coolant Check - 7.3L....................226 Adding Coolant................................................... 227
Coolant Change................................................. 229
Engine Coolant Temperature Management.................................................. 230
Engine-driven Cooling Fan (Fan Clutch).............................................................. 229Fail-Safe Cooling...............................................
229
Recycled Coolant............................................... 228
Severe Climates................................................. 228
Engine Emission Control...........................109
Engine Idle Shutdown..................................96
Engine Immobilizer See: Passive Anti-Theft System...................... 51
Engine Oil Check - 6.7L Diesel
.................218
Adding Engine Oil............................................... 219
Engine lubrication for severe service operation .......................................................... 219
Engine Oil Check - 7.3L
................................217
Adding Engine Oil................................................ 217
Engine Oil Dipstick - 6.7L Diesel..............217
Engine Oil Dipstick - 7.3L............................217
Engine Specifications - 6.7L Diesel
........281
Drivebelt Routing................................................ 281
Engine Specifications - 7.3L.....................282 Drivebelt Routing............................................... 283
Entering, Exiting or Climbing on This Vehicle
.............................................................20
Environment......................................................21
Essential Towing Checks............................173 Before Towing a Trailer...................................... 173
Hitches.................................................................... 173
Safety Chains........................................................ 173
Trailer Brakes........................................................ 173
Trailer Lamps........................................................ 173
When Towing a Trailer....................................... 173
Event Data Recording See: Data Recording............................................. 13
Exhaust Brake
................................................136
Exhaust Brake Operating
Characteristics................................................ 137
Exhaust System Inspection.....................248
Export Unique Options.................................19
Exterior Mirrors...............................................60 Auxiliary Convex Mirrors.................................... 60
Clearance Lamps.................................................. 61
Foldaway Exterior Mirrors................................. 60
Heated Exterior Mirrors....................................... 61
Power Exterior Mirrors........................................ 60
Signal Indicator Mirrors....................................... 61
Telescoping Mirrors.............................................. 61
380
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