2021 FORD F650/750 alternator

Protected Component
Fuse
Rating
Fuse
Number
Horn.
20 A
1
Blower motor.
40 A
2
Blower motor control.
Not used.
—
3
Starter motor.
30 A
4
Not used.
—
5
Upfitter relay 4.
20 A
6
Not used.
—
8
Not used.
—
10
Not used.
—
12
Run/start spare.
10 A
13
Adaptive cruise control.
10 A
14
Blower motor relay.
10 A
15
Air dryer.
20 A
16
Powertrain control module - ignition status run power.
10 A
17
Glow plug control module - ignition status run power (diesel).
Anti-lock brake system run/start.
10 A
18
Transmission control module.
10 A
19
Ignition status run power (diesel).
Windshield wiper motor.
30 A
20
Not used.
—
21
Not used.
—
22
Alternator 2 (dual alternator only).
10 A
23
Body control module run power 2 bus.
40 A
24
Body control module run power 1 bus.
50 A
25
Not used.
—
26
Body builder battery feed.
20 A
27
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses

Protected Component
Fuse
Rating
Fuse
Number
Not used.
—
28
Alternator 1 A-Line.
10 A
29
Not used.
—
30
Hydromax pump.
60 A
31
Powertrain control module.
20 A
32
Canister vent solenoid (gas).
20 A
33
Canister purge solenoid (gas).
Variable cam timing actuator 11 (gas).
Heated exhaust gas oxygen sensor (gas).
Urea tank power (diesel).
Exhaust gas recirculation cool bypass valve (diesel).
A/C clutch relay.
10 A
34
Customer access vehicle power 3 feed.
Variable oil pump (diesel).
Cooling fan (diesel).
Fan clutch (gas).
Coil on plug (gas)
20 A
35
Urea tank (diesel).
Glow plug controller (diesel).
Nitrogen oxide sensor control module (diesel).
Particulate matter sensor (diesel).
Fuel volume control value (diesel).
10 A
36
Fuel pressure regulator (diesel).
Not used.
—
37
Not used.
—
38
Not used.
—
39
Trailer brake control module.
30 A
41
Not used.
—
43
Not used.
—
45
A/C clutch solenoid.
10 A
46
Upfitter relay 1.
40 A
47
Upfitter run and accessory feed.
20 A
48
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Fuses

Engine compartment (with engine off)
Inspect for glazing, fraying or cracking. There should be no
more than 5-7 cracks per rib, per 1 in (2.5 cm)
Belts (fan, alternator,
water pump and air
conditioning
compressor)
Inspect for signs of fluid puddles or dripping fluid on the
ground under the engine, or the underside of the engine.
Fluid leaks
Inspect for debris that may have collected on the HVAC air
inlet grille or inside the exterior module as this may reduce
system performance.
HVAC air inlet Engine starting (with parking brake applied)
Before entering the cab, verify that the vehicle is equipped
with spare electrical fuses (if used), three red reflective
triangles, a properly charged and rated fire extinguisher and
wheel chocks.
Safety and emergency
equipment
Walk around the vehicle and verify all steps and grab handles,
inside and out (as well as behind), are tight and clean. Use
extreme caution and a three-point stance at all times.
Inspect door latches for proper closing, latching and locking.
Set the parking brake. Make sure the gearshift lever is in
neutral (N) or park (P) (if equipped with a park position).
Starting the engine
Diesel engine:
Turn the key to the on position. Turn the key
to start when the wait to start indicator light in the instrument
cluster turns off.
Gasoline engine:
Turn the key to start, and then release it
as soon as the engine starts.
Verify pressure builds to normal operating range.
Engine oil pressure
A tone indicating low air pressure should sound immediately
after the engine starts but before the compressor has built-
up pressure. The tone should stop when the air pressure
reaches
70 psi (483 kPa). Let the air pressure build to
governed cutout pressure, which should occur between
115– 130 psi (793–896 kPa)
.
Low air pressure warning
tone (if equipped with an
air compressor)
Press the accelerator and verify that it operates smoothly,
without any binding or irregular feel. Release the pedal and
verify the engine returns to idle speed immediately.
Accelerator
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Vehicle Inspection Guide

Engine starting (with parking brake applied)
Check the gauge (diesel engine) or indicator light (gasoline
engine) to verify the alternator is charging.
Voltmeter
Inspect for excessive free play in the steering linkages. The
steering wheel should have less than 2 in (5 cm) of free play
at its rim.
Steering linkage free play
Verify the parking brake holds the vehicle by gently trying to
pull forward with the parking brake applied.
Parking brake
Verify operation using the following procedure. Chock the
wheels, if necessary. Push in the parking brake and, on
tractors, push in the tractor parking brake knob:
Air brakes
1. Verify the air compressor or governor cutout pressure is
approximately 120 psi (827 kPa).
2. Turn off the engine, and then turn the key back to the on
position (without starting the engine).
3. Without the brake pedal applied, note the air pressure drop
for one minute. It should be less than 2 psi (14 kPa) for single
vehicles and
3 psi (21 kPa) for combination vehicles.
4. Press and hold the brake pedal with
90 psi (621 kPa) or
more. Make sure there is no more than a 3 psi (21 kPa) per
minute leak for single vehicles and a 4 psi (28 kPa) minute
leak for combination vehicles.
5. Pump the brake pedal to deplete the system of air pressure.
The warning light and tone should turn on at 57 psi (393 kPa).
6. Pump the brake pedal and make sure the parking brake
and trailer parking brake knobs pop out at
20 psi (138 kPa)
or higher.
Verify that the fluid level is in the proper operating range. See
Automatic Transmission Fluid Check
(page 236).
Automatic transmission
fluid Front of vehicle
Verify all exterior lights illuminate and are clean.
Lights
Check headlights function on high and low beam.
Verify reflectors are clean, unbroken and of proper color (red
on rear, amber elsewhere).
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Vehicle Inspection Guide

2. Reconnect the fuel lines.
3. Switch the ignition on for 30 seconds
and then switch the ignition off.
Repeat this operation six times in a row
to purge any trapped air from the fuel
system.
ELECTRICAL SYSTEM
INSPECTION
Periodically inspect electrical connectors
on the outside of the cab and on the engine
and frame for corrosion and tightness.
Exposed terminals, such as the fuel sender,
cranking motor, alternator and
feed-through studs, should be cleaned and
re-coated with a lubricant sealing grease
such as Motorcraft Silicone Brake Caliper
Grease and Dielectric Compound XG-3, or
equivalent. This should include the ground
cable connector for batteries, engine and
cab as well as the jump-starting stud.
Accessory Feed Connections
Vehicle electrical systems are complex and
often include powertrain components,
such as engine and transmission controls,
instrument panels and ABS. While most
systems operate on battery voltage (12
volts), some systems can be as high as 90
volts or as low as five volts. See the
Electrical Circuit Diagram Manuals,
available from your vehicle ’s manufacturer,
to make sure that any extra body lights and
accessory connections to circuits are both
appropriate and not overloaded. Do not
make modifications to any vehicle control
system without first contacting an
authorized dealer. AIR INDUCTION SYSTEM
INSPECTION WARNING: When performing
maintenance to any turbocharged engine
with engine air inlet piping disconnected,
keep loose clothing, jewelry and long hair
away from the engine air inlet piping. A
turbocharger compressor air inlet
protective shield should be installed over
the turbocharger air inlet to reduce the
risk of personal injury or death.
Perform a complete inspection of the air
induction system annually.
In areas where road salt is used,
disassemble the joints of each aluminum
component and inspect for salt build-up
and presence of chlorine that can cause
aluminum particles to flake off and enter
the engine combustion chambers. If
evidence of corrosion is found (usually at
the pipe connections), use a wire brush to
clean the inside of the pipes and inside the
rubber hoses.
If pitting is evident at the joint ends of the
intake pipes, use Motorcraft Silicone
Gasket and Sealant TA-30 to seal the
joints. Make sure no excess material, which
can pull into the engine, is on the inside of
the pipes. If the service condition of the
pipes, hoses or clamps is questionable,
replace the defective part(s).
Make sure to clean all dust and debris out
of the pipes and couplings with a clean,
damp rag before reassembly.
Chassis-mounted Charge Air
Cooler
Visually inspect the core assembly for
debris and clogging of external fins with
the engine off.
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ENGINE SPECIFICATIONS - 6.7L DIESEL
6.7L V8 Diesel Engine
Engine
406 in³ (6,651 cm³)
Displacement.
Low Sulfur Diesel up to B20
Required fuel.
1-3-7-2-6-5-4-8
Firing order.
15.8:1
Compression ratio.
Drivebelt Routing
Single Alternator Single Alternator With Air Brake
Compressor
Drivebelt closest to the engine.
A
Drivebelt furthest from the
engine.
B
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Capacities and SpecificationsE224819 E224825

Dual Alternator Dual Alternator With Air Brake
Compressor
Drivebelt closest to the engine.
A
Drivebelt furthest from the
engine.
B
Note: The belt routings show vehicles with
air conditioning. When vehicles do not have
air conditioning, an idler pulley is in place of
the A/C compressor.
ENGINE SPECIFICATIONS - 7.3L 7.3L V8 Engine
Engine
445 in³ (7,293 cm³)
Displacement.
Minimum 87 octane
Required fuel.
1-5-4-8-6-3-7-2
Firing order.
Coil near spark plug with spark plug wire
Ignition system.
0.049 in (1.25 mm) - 0.053 in (1.35 mm)
Spark plug gap.
10.5:1
Compression ratio.
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F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Capacities and SpecificationsE224820 E224826

Drivebelt Routing
Single Alternator
Drivebelt closest to the engine.
A
Drivebelt furthest from the
engine.
B Dual Alternator Drivebelt closest to the engine.
A
Drivebelt furthest from the
engine.
B
MOTORCRAFT PARTS - 6.7L DIESEL Part Number
Component
FL-2051S
Engine oil filter. 1
FL-2077
Oil separator filter.
FA-1909
Foam pre-filter.
FA-1923
Air filter.
FD-4626
Fuel filter kit (2 included - engine and frame
rail mounted).
FT-187
Transmission filter.
BH-31-XL
Two Batteries (standard)(1500 CCA).
BH-31-XT
Two Batteries (optional)(1800 CCA).
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