tires LINCOLN AVIATOR 2023 Service Manual

When Inflating Your Tires
WARNING: Do not use the tire
pressure displayed in the information
display as a tire pressure gauge. Failure to
follow this instruction could result in
personal injury or death.
When putting air into your tires (such as at a
gas station or in your garage), the tire
pressure monitoring system may not respond
immediately to the air added to your tires.
It may take up to two minutes of driving over
20 mph (32 km/h) for the light to turn off after
you have filled your tires to the
recommended inflation pressure.
How Temperature Affects Your Tire
Pressure
The tire pressure monitoring system monitors
tire pressure in each pneumatic tire. While
driving in a normal manner, a typical
passenger tire inflation pressure may
increase about 2–4 psi (14–28 kPa) from a
cold start situation. If the vehicle is stationary
overnight with the outside temperaturesignificantly lower than the daytime
temperature, the tire pressure may decrease
about 3 psi (21 kPa) for a drop of 30°F (17°C)
in ambient temperature. This lower pressure
value may be detected by the tire pressure
monitoring system as being significantly
lower than the recommended inflation
pressure and activate the system warning
light for low tire pressure. If the low tire
pressure warning light is on, visually check
each tire to verify that no tire is flat. If one or
more tires are flat, repair as necessary.
Check the air pressure in the road tires. If
any tire is under-inflated, carefully drive the
vehicle to the nearest location where air can
be added to the tires. Inflate all the tires to
the recommended inflation pressure.
CHANGING A ROAD WHEEL
If you get a flat tire when driving, do not
apply the brake heavily. Instead, gradually
decrease your speed. Hold the steering
wheel firmly and slowly move to a safe place
on the side of the road.Have a flat serviced by an authorized dealer
in order to prevent damage to the tire
pressure monitoring system sensors. See
Tire Pressure Monitoring System (page 447).
Replace the spare tire with a road tire as
soon as possible. During repairing or
replacing of the flat tire, have the authorized
dealer inspect the tire pressure monitoring
system sensor for damage.
Note:You should only use tire sealants in
roadside emergencies as they may cause
damage to the tire pressure monitoring
system sensor.
Note:The tire pressure monitoring system
indicator light illuminates when the spare
tire is in use. To restore the full function of
the monitoring system, all road wheels
equipped with tire pressure monitoring
sensors must be mounted on the vehicle.Dissimilar Spare Wheel and Tire
Assembly Information
WARNING: Failure to follow these
guidelines could result in an increased risk
of loss of vehicle control, injury or death.
451
Wheels and Tires

If you have a dissimilar spare wheel and tire,
then it is intended for temporary use only.
This means that if you need to use it, you
should replace it as soon as possible with a
road wheel and tire assembly that is the
same size and type as the road tires and
wheels that were originally provided by us.
If the dissimilar spare tire or wheel is
damaged, you should replace it rather than
repair it.
A dissimilar spare wheel and tire assembly
is defined as a spare wheel and tire assembly
that is different in brand, size or appearance
from the road tires and wheels and can be
one of three types:
1. T-type mini-spare: This spare tire begins
with the letter T for tire size and may have
Temporary Use Only molded in the sidewall.
2. Full-size dissimilar spare with label on
wheel: This spare tire has a label on the
wheel that states: THIS WHEEL AND TIRE
ASSEMBLY FOR TEMPORARY USE ONLY.
When driving with one of the dissimilar spare
tires listed above, do not:• Exceed 50 mph (80 km/h).
• Load the vehicle beyond maximum
vehicle load rating listed on the Safety
Compliance Label.
• Tow a trailer.
• Use snow chains on the end of the
vehicle with the dissimilar spare tire.
• Use more than one dissimilar spare tire
at a time.
• Use commercial car washing equipment.
• Try to repair the dissimilar spare tire.
Use of one of the dissimilar spare tires listed
above at any one wheel location can lead to
impairment of the following:
• Handling, stability and braking
performance.
• Comfort and noise.
• Ground clearance and parking at curbs.
• Winter weather driving capability.
• Wet weather driving capability.
• All-wheel driving capability.
3. Full-size dissimilar spare without label
on wheel.When driving with the full-size dissimilar
spare wheel and tire assembly, do not:
• Exceed 70 mph (113 km/h).
• Use more than one dissimilar spare
wheel and tire assembly at a time.
• Use commercial car washing equipment.
• Use snow chains on the end of the
vehicle with the dissimilar spare wheel
and tire assembly.
The usage of a full-size dissimilar spare
wheel and tire assembly can lead to
impairment of the following:
• Handling, stability and braking
performance.
• Comfort and noise.
• Ground clearance and parking at curbs.
• Winter weather driving capability.
• Wet weather driving capability.
• All-wheel driving capability.
452
Wheels and Tires

When driving with the full-size dissimilar
spare wheel and tire assembly additional
caution should be given to:
• Towing a trailer.
• Driving vehicles equipped with a camper
body.
• Driving vehicles with a load on the cargo
rack.
Drive cautiously when using a full-size
dissimilar spare wheel and tire assembly and
seek service as soon as possible.
Tire Change Procedure
WARNING: The jack supplied with
this vehicle is only intended for changing
a flat tire in an emergency. Do not attempt
to do any other work on your vehicle when
it is supported by the jack, as your vehicle
could slip off the jack. Failure to follow this
instruction could result in personal injury
or death.
WARNING: To help prevent your
vehicle from moving when changing a
wheel, shift the transmission into park (P),
set the parking brake and use an
appropriate block or wheel chock to
secure the wheel diagonally opposite to
the wheel being changed. For example,
when changing the front left wheel, place
an appropriate block or wheel chock on
the right rear wheel.
WARNING: Only use the jack
provided as original equipment with your
vehicle.
WARNING: Failure to follow these
guidelines could result in an increased risk
of loss of vehicle control, injury or death.
WARNING: Only use the specified
jacking points. If you use any other
locations you could damage vehicle
components, such as brake lines.
WARNING: Never place anything
between the vehicle jack and your vehicle.
WARNING: Never place anything
between the vehicle jack and the ground.
WARNING: Do not attempt to change
a tire on the side of the vehicle close to
moving traffic. Pull far enough off the road
to not obstruct the flow of traffic and avoid
the danger of being hit when operating the
jack or changing the wheel.
Note:Passengers should not remain in your
vehicle when the vehicle is being jacked.
Note:Jack at the specified locations to avoid
damage to the vehicle.
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453
Wheels and Tires

Note:No maintenance or additional
lubrication of your jack is required over the
service life of your vehicle.
1. Park on a level surface, set the parking
brake and switch on the hazard flashers.
2. Apply the parking brake, place the
transmission in park (P) and turn the
engine off.
3. If your vehicle has air suspension, use
the touch screen to switch on the Air
Suspension Service Mode prior to
jacking.
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4. Block the wheel diagonally opposite the
flat tire. For example, if the left front tire
is flat, block the right rear wheel.
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5. Unfold the third row seat if it is in the
stowed position, then remove the
carpeted cargo area to access the spare
tire and jack storage compartment.
6. Turn the wing nut securing the spare tire
counterclockwise, remove the wing nut.7. Remove the spare tire, jack and wrench
from the spare tire storage compartment
under the trunk load floor.
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8. Turn the hex nut on the jack
counterclockwise to remove the lug
wrench from jack. This lowers the jack
and loosens the mechanical lock.
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454
Wheels and Tires

9. Unfold the wrench for use.
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10. Remove the strap from the jack.
1
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2
11. Loosen each wheel lug nut one-half
turn counterclockwise, but do not
remove them until the flat tire is raised
off the ground.
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12. Find the jacking points shown here,
small arrow-shaped marks on the sills
show the location of the jacking points.
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455
Wheels and Tires

13. If your vehicle is equipped with running
boards the jacking points will be
marked on the front and rear of the
running board.
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14. Place the jack at the jacking point next
to the tire which you are changing. Turn
the lug wrench handle clockwise until
the flat tire is completely off the ground.
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15. Remove the lug nuts with the lug
wrench.
16. Replace the flat tire with the spare tire,
making sure the valve stem is facing
outward.
17. Install the lug nuts snug against the
hub. Do not fully tighten the lug nuts
until the vehicle is lowered.
18. Turn the wrench handle
counterclockwise to lower the vehicle
completely.
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2 34
5
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19. Remove the jack and fully tighten the
lug nuts in the order shown. See
Technical Specifications (page 458).
20. If you enabled the Air Suspension
Service Mode, switch the mode off prior
to driving.
21. Remove the wheel blocks.
456
Wheels and Tires

Stowing the jack
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1. To store the folded wrench on the jack,
engage the bracket of the jack base and
the lug wrench pin, swing the wrench
upwards, adjust jack height until the
wrench hook engages the hole on jack.
Tighten the hex nut clockwise by hand
until secure.
2. Place the jack in the spare tire
compartment, install the wing nut and
tighten clockwise by hand until secure.
Stowing the flat tire
You cannot store the full-sized road wheel
in the temporary spare tire well.1. Find the flat tire retainer strap tucked
inside the jack channel. Lower the
carpeted load floor.
2. Stow the flat tire in the cargo area on the
load floor with the wheel facing up.
Secure the flat tire with the retainer strap
by following the next steps.
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3. Locate the rear left side and right side
cargo tie-down rings. Push the loop end
of the retainer strap through one cargo
tie-down ring. Thread the non-loop end
through the loop.4. Weave the retainer strap through the
wheel openings.
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5. Locate the front cargo tie-down in the
opposite rear corner of the cargo area.
Thread the retainer strap through the
tie-down and pull tight.
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6. Secure by tying a 2-half hitch knot.
457
Wheels and Tires

TECHNICAL SPECIFICATIONS
Wheel Lug Nut Torque Specifications
WARNING: When you install a wheel, always remove any corrosion, dirt or foreign materials present on the mounting surfaces of the
wheel or the surface of the wheel hub, brake drum or brake disc that contacts the wheel. Make sure to secure any fasteners that attach
the rotor to the hub so they do not interfere with the mounting surfaces of the wheel. Installing wheels without correct metal-to-metal contact
at the wheel mounting surfaces can cause the wheel nuts to loosen and the wheel to come off while your vehicle is in motion, resulting in
loss of vehicle control, personal injury or death.
lb.ft (Nm)*Bolt size
150 lb.ft (204 Nm) M14 x 1.5
*Torque specifications are for nut and bolt threads free of dirt and rust. Use only our recommended replacement fasteners.
Retighten the lug nuts to the specified torque within 100 mi (160 km) after any wheel disturbance (such as tire rotation, changing a flat tire,
wheel removal).
458
Wheels and Tires

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Wheel pilot bore A
Inspect the wheel pilot bore and mounting
surface prior to installation. Remove any
visible corrosion or loose particles.
459
Wheels and Tires

Check Every Month
Engine oil level.
Function of all interior and exterior lights.
Tires (including spare) for wear and proper pressure.
Windshield washer fluid level.
Holes and slots in the tail pipe to make sure they are functional and clear of debris.
Check Every Six Months
Battery connections. Clean if necessary.
Body and door drain holes for obstructions. Clean if necessary.
Cooling system fluid level and coolant strength.
Door weatherstrips for wear. Lubricate if necessary.
Hinges, latches and outside locks for proper operation. Lubricate if necessary.
Parking brake for proper operation.
581
Scheduled Maintenance