2016 FORD F750 engine

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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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 200).
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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Rear brakes
Inspect for cracked, worn or frayed hoses, and that all coup-
lings are secure.
Hoses
Verify that there are no cracks or dents, and that the cham-
bers are securely mounted.
Brake chambers
Inspect for broken, loose or missing parts.
Slack adjusters
Note: The angle between the push rod and adjuster arm
should be approximately 90 degrees when the brakes are
applied. When pulled by hand, the push rod should not move
more than approximately
1 in (2.5 cm).
Verify that there are no cracks, dents, holes, and no loose or
missing bolts and that the brake linings are not worn,
dangerously thin or contaminated by lubricant.
Drums Rear wheels
Check for even separation of dual wheels, and that the tires
are not touching each other.
Spacers
Inspect for damaged or bent rims. They should not have
welding repairs, and there should be no rust trails, which
indicate it is loose on the wheel.
Rims
Verify all lug nuts are present and not loose (look for rust
trails around the lug nuts). There should be no cracks radiating
from the lug bolt holes or distortion of the bolt holes.
Lug nuts
Trailer
If you are pulling a trailer, perform an
inspection of the trailer similar to that of
the tractor. The inspection should follow
trailer manufacturer recommendations
and should include at a minimum: general
condition, landing gear, doors, sides, lights,
reflectors, suspension, brakes, tires,
wheels, cargo placement, stability and
tie-downs. Transmission WARNING
If the unit starts in gear and/or the
neutral start switch is not functioning
correctly, the vehicle may
inadvertently move which could result in
property damage, personal injury or death. Regularly inspect the transmission's
neutral start switch. The engine should
only start in neutral (N) or park (P) (if
equipped with a park position).
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GENERAL INFORMATION
WARNINGS
Making modifications to various
parts, components and systems of
the vehicle, such as brake and
steering systems, can adversely affect the
quality, reliability and operation of your
vehicle and could result in property
damage, personal injury or death. Such
modifications must be avoided. Failure to properly perform
maintenance and servicing
procedures could result in vehicle
damage, personal injury or death. Take care when performing any
maintenance, system check or
service on your vehicle. Some of the
materials may also be hazardous if used,
serviced or handled improperly and could
result in property damage, personal injury
or death. If the owner or operator of the vehicle is a
skilled technician and intends on
performing the vehicle maintenance and
service, he is strongly urged to purchase a
service manual.
Always use care when performing vehicle
maintenance, repairs or system checks.
Improper or incomplete service could result
in your vehicle not working properly which
may result in personal injury or damage to
your vehicle or equipment. It is the
operator
’s responsibility to see that your
vehicle receives proper care and
maintenance. If you have any questions
about performing service, have the service
done by a qualified technician.
To help you service your vehicle, we
provide scheduled maintenance
information which makes tracking routine
service easy. See Scheduled
Maintenance (page 314). If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. Motorcraft® parts are
designed and built to provide the best
performance in your vehicle.
Servicing Guidelines
WARNING
The use of inferior parts can
adversely affect the quality and
reliability of your vehicle and could
result in property damage, personal injury
or death. When servicing your vehicle:
•
Always wear safety glasses for eye
protection.
• Always set the parking brake or chock
the wheels.
• Always use support stands, not a jack,
when working under a raised vehicle.
• Always turn off the ignition unless a
procedure requires the engine to be
running.
• Always avoid contact with hot metal
parts. Allow the components to cool
before working with, or around, them.
• Always operate the engine in a
well-ventilated area.
• Do not wear loose-fitting clothing,
hanging jewelry, watches or rings.
• Do not smoke.
• Do not work on the brakes or the clutch
unless you take the proper precautions
to avoid inhaling friction material dust.
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Quality service parts are available through
an authorized dealer. If dealer parts are not
used, make sure the replacement parts are
of equivalent quality.
Working with the Engine Off
1. Set the parking brake and shift to
neutral (N) or park (P).
2. Switch off the engine.
3. Block the wheels.
Working with the Engine On WARNING
To reduce the risk of vehicle damage
and/or personal burn injuries, do not
start your engine with the air cleaner
removed and do not remove it while the
engine is running. 1. Set the parking brake and shift to
neutral (N) or park (P).
2. Block the wheels
Supporting Your Vehicle for
Service WARNING
Do not use a jack when working
under a vehicle. It may give way,
causing the vehicle to fall and result
in property damage, personal injury or
death. Always use floor stands to support
the vehicle. Prepare your vehicle for service repairs by
doing the following:
1. Park your vehicle on a level, concrete
floor.
2. Set the parking brake and block the wheels to prevent your vehicle from
moving. 3. Select a jack with a rated capacity
sufficient to lift and hold up your
vehicle.
4. Raise your vehicle with the jack applied
to the axle(s). Do not use the bumper
as a lifting point.
5. Support your vehicle with floor stands under the axle(s). When servicing the
axle or the suspension, support your
vehicle with floor stands under the
frame side-members, preferably
between the axles.
OPENING AND CLOSING THE
HOOD WARNINGS
Always set the parking brake fully
before opening the hood. Failure to
follow this warning could result in
serious personal injury or death. Do not stand under the hood when
you raise or lower it. Failure to follow
this warning could result in serious
personal injury or death. If the engine is running while the
hood is open, stay clear of moving
engine components. Failure to follow
this warning could result in serious
personal injury or death. Opening the Hood
Before opening the hood, set the parking
brake fully, shift into park (P) or neutral
(N) and switch the ignition off.
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UNDER HOOD OVERVIEW - 6.8L
Windshield washer fluid reservoir. See Washer Fluid Check (page 202).
A
Engine coolant reservoir. See
Engine Coolant Check (page 190).
B
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 200).
C
Brake fluid reservoir. See
Brake Fluid Check (page 201).
D
Engine compartment fusebox. See
Fuses (page 162).
E
Power steering fluid reservoir. See
Power Steering Fluid Check (page 202).
F
Engine oil dipstick. See
Engine Oil Dipstick (page 185).
G
Engine oil filler cap. See
Engine Oil Check (page 185).
H
Air cleaner assembly. See
Changing the Engine Air Filter (page 210).
I
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UNDER HOOD OVERVIEW - 6.7L DIESEL
Windshield washer fluid reservoir. See Washer Fluid Check (page 202).
A
Secondary Cooling System Reservoir. See Engine Coolant Check (page 195).
B
Engine coolant reservoir. See
Engine Coolant Check (page 195).
C
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 200).
D
Secondary fuel filter. See
Draining the Fuel Filter Water Trap (page 203).
E
Engine oil separator. See Changing the Engine Oil and Oil Filter (page 188).
F
Brake fluid reservoir. See
Brake Fluid Check (page 201).
G
Engine compartment fusebox. See
Fuses (page 162).
H
Power steering fluid reservoir. See
Power Steering Fluid Check (page 202).
I
Air brake compressor. See
Brake System Inspection (page 218).
J
Engine oil filler cap. See
Engine Oil Check (page 186).
K
Engine oil dipstick. See
Engine Oil Dipstick (page 185).
L
Air cleaner assembly. See
Changing the Engine Air Filter (page 211).
M
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ENGINE OIL DIPSTICK - 6.8L
MINA
MAX
B
ENGINE OIL DIPSTICK - 6.7L
DIESEL Minimum.
A
Maximum.
B
ENGINE OIL CHECK - 6.8L
1. Make sure that your vehicle is on level ground.
2. Turn the engine off and wait 15 minutes
for the oil to drain into the oil pan.
3. Set the parking brake and ensure the gearshift is in park (P) or neutral (N). 4. Open the hood. Protect yourself from
engine heat.
5. Locate and carefully remove the engine
oil level dipstick. See Under Hood
Overview (page 183).
6. Wipe the dipstick clean. Insert the dipstick fully, then remove it again.
•If the oil level is between the lower
and upper holes, the oil level is
acceptable. DO NOT ADD OIL.
• If the oil level is below the lower
hole, add enough oil to raise the
level within the lower and upper
holes.
• Oil levels above the upper hole may
cause engine damage. Some oil
must be removed from the engine
by an authorized dealer.
7. Put the oil level dipstick back into the oil dipstick tube and ensure it is fully
seated.
Adding Engine Oil
Note: Do not remove the filler cap when
the engine is running.
Note: Do not remove the engine oil level
dipstick when the engine is running.
Note: Do not add oil further than the MAX
mark. Oil levels above the MAX mark may
cause engine damage. 185
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