Harbor Freight Tools 42708 Automobile Accessories User Manual


 
Page 19For technical questions, please call 1-800-444-3353.Item 42708
TIRE CARE
Checking Tire Pressure
Note: Underinated tires can decrease handling,
stopping performance, traction, tire life,
and load-carrying capability, in addition to
causing other negative and hazardous effects,
including tire failure. Overinated tires are
at greater risk of an impact break, where the
tread and casing break when striking a hard
edge, often opening a huge gash across
the tread. Incorrect ination pressure also
increases tires wear rate. Therefore, it is
important to keep tires inated properly.
Check all tires’ pressure at least
monthly, due to the following factors:
Most tires naturally lose air gradually.
Tires can suddenly lose air if the tire
strikes a pothole, curb, or other object.
It is usually not possible to
determine underinflation of radial
tires by visual inspection.
This vehicle has 60 PSI recommended cold
tire ination pressure. The term “cold” in this
manual does not refer to the temperature outside,
but it refers to the fact that a tire that has not
been driven for a period is cooler (and therefore
has lower pressure) than a tire that has been
driven on. Tires heat up while being driven on.
To check (or ll to) a tire’s cold ination, the tire
must have not been driven for more than a mile or
two for at least three hours. If you check a tires
pressure when it is not “cold”, the pressure will
appear higher than the actual cold tire ination.
Steps for Maintaining
Proper Tire Pressure
1. Locate the recommended tire pressure
on the vehicle’s tire information placard,
certication label, or in the owner’s
manual. This trailer has 60 PSI
recommended cold tire ination pressure.
2. Measure and record the tire
pressure of all tires.
3. If the tire pressure is too high in any of the
tires and the tires have not been driven for
at least three hours, slowly release air by
gently pressing on the tire valve stem with the
edge of your tire gauge until you get to the
correct pressure. If the vehicle have been
driven within the past three hours and the tire
pressure is too high on any tires, then recheck
the pressure once the tires have been allowed
to sit motionless for at least three hours.
4. If the tire pressure is too low, note the
difference between the measured tire
pressure and the correct tire pressure.
These “missing” pounds of pressure
are what you will need to add.
5. At a service station, add the missing pounds of
air pressure to each tire that is underinated.
6. Check all the tires to make sure they
have the same air pressure.
7. If the tires’ pressure was not measured “cold”,
then the pressure should be rechecked
with the tires cold as soon as possible.
Tire Ination and Load Limit
Tire and Loading Information Placard
TIRE AND LOADING INFORMATION
The weight of cargo should never exceed 394 kg or 870 lb.
TIRE SIZE COLD TIRE PRESSURE
SEE OWNER’S
MANUAL FOR
ADDITIONAL
INFORMATION.
FRONT 4.80/4.00-8 410 kPa, 60 PSI
REAR NONE NONE
SPARE NONE NONE
12a
MODEL 42708
The Tire and Loading Information Placard displays the cold tire ination pressure and the
load limit for this vehicle. See the Tire Care section for an explanation of tire pressure and
see the Vehicle Load Limit section following that for an explanation of load limit.