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Wheels and tires – FORD 2015 F-550 v.1 User Manual

Page 277

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Note: If you have to drive a

distance to get air for your tire(s),

check and record the tire pressure

first and add the appropriate air

pressure when you get to the
pump. It is normal for tires to heat
up and the air pressure inside to go
up as you drive.

2. Remove the cap from the valve
on one tire, then firmly press the
tire gauge onto the valve and
measure the pressure.

3. Add enough air to reach the
recommended air pressure.
Note: If you overfill the tire, release

air by pressing on the metal stem

in the center of the valve. Then
recheck the pressure with your tire

gauge.
4. Replace the valve cap.
5. Repeat this procedure for each
tire, including the spare.
Note: Some spare tires operate at

a higher inflation pressure than the

other tires. For T type mini-spare

tires, (see the Dissimilar spare
wheel and tire assembly

information for a description. Store
and maintain at 60 psi (4.15 bar).

For full-size and dissimilar spare

tires, see the Dissimilar spare wheel

and tire assembly information for

a description. Store and maintain

at the higher of the front and rear
inflation pressure as shown on the
Safety Compliance Certification
Label or Tire Label.

6. Visually inspect the tires to

make sure there are no nails or

other objects embedded that

could poke a hole in the tire and

cause an air leak.

7. Check the sidewalls to make
sure there are no gouges, cuts or
bulges.

Tire Inflation Information

WARNING

An inflated tire and rim can
be very dangerous if

improperly used, serviced or
maintained. To reduce the risk of

serious injury, never attempt to

re-inflate a tire which has been run

flat or seriously under-inflated
without first removing the tire

from the wheel assembly for

inspection. Do not attempt to add

air to tires or replace tires or

wheels without first taking
precautions to protect persons

and property.

All tires with Steel Carcass Plies

(if equipped):
This type of tire utilizes steel cords

in the sidewalls. As such, they

cannot be treated like normal light

truck tires. Tire service, including
adjusting tire pressure, must be

performed by personnel trained,
supervised and equipped
according to Federal Occupational
Safety and Health Administration
regulations. For example, during

274

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Wheels and Tires

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