Ford F-250 Super Duty (1999 year). Manual — part 48

• Always dispose of automotive

batteries in a responsible manner.
Follow your local authorized
standards for disposal. Call your
local authorized recycling center
to find out more about recycling
automotive batteries.

WINDSHIELD WIPER BLADES

Check the wiper blades at least twice a year or when they seem less
effective. Substances such as tree sap and some hot wax treatments used
by commercial car washes reduce the effectiveness of wiper blades.

Checking the wiper blades

If the wiper blades do not wipe properly, clean both the windshield and
wiper blades using undiluted windshield wiper solution or a mild
detergent. Rinse thoroughly with clean water. To avoid damaging the
blades, do not use fuel, kerosene, paint thinner or other solvents.

Changing the wiper blades

To replace the wiper blades:

1. Pull the wiper arm away from the
windshield and lock into the service
position.

2. Turn the blade at an angle from
the wiper arm. Push the lock pin
manually to release the blade and
pull the wiper blade down toward
the windshield to remove it from the
arm.

3. Attach the new wiper to the
wiper arm and press it into place
until a click is heard.

L

E

A

D

R

E

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U

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RECYCLE

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INFORMATION ABOUT TIRE QUALITY GRADES

New vehicles are fitted with tires
that have their Tire Quality Grade
(described below) molded into the
tire’s sidewall. These Tire Quality
Grades are determined by standards
that the United States Department
of Transportation has set.

Tire Quality Grades apply to new
pneumatic tires for use on
passenger cars. They do not apply
to deep tread, winter-type snow
tires, space-saver or temporary use spare tires, tires with nominal rim
diameters of 10 to 12 inches or limited production tires as defined in
Title 49 Code of Federal Regulations Part 575.104(c)(2).

U.S. Department of Transportation-Tire quality grades: The U.S.
Department of Transportation requires Ford to give you the following
information about tire grades exactly as the government has written it.

Treadwear

The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified
government test course. For example, a tire graded 150 would wear one
and one-half (1 1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends upon the actual
conditions of their use, however, and may depart significantly from the
norm due to variations in driving habits, service practices, and
differences in road characteristics and climate.

Traction AA A B C

The traction grades, from highest to lowest are AA, A, B, and C. Those
grades represent the tire’s ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor traction
performance.

The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not include

acceleration, cornering, hydroplaning or peak traction characteristics.

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Temperature A B C

The temperature grades are A (the highest), B, and C, representing the
tire’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level of performance
which all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.

The temperature grade for this tire is established for a tire that
is properly inflated and not overloaded. Excessive speed,

underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.

SERVICING YOUR TIRES

Checking the tire pressure
• Use an accurate tire pressure gauge.
• Check the tire pressure when tires are cold, after the vehicle has been

parked for at least one hour or has been driven less than 5 km (3
miles).

• Adjust tire pressure to recommended specifications found on the

Certification Label.

Improperly inflated tires can affect vehicle handling and can fail
suddenly, possibly resulting in loss of vehicle control.

Tire rotation

Because your vehicle’s tires perform different jobs, they often wear
differently. To make sure your tires wear evenly and last longer, rotate
them as indicated in the Scheduled Maintenance Guide. If you notice
that the tires wear unevenly, have them checked.

The following procedure applies to vehicles equipped with single rear
wheels, if your vehicle is equipped with dual rear wheels it is
recommended that only the front wheels be rotated (side to side).

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• Four tire rotation

• Five tire rotation

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