MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Preventive Maintenance<br />
• Too much air pressure reduces the tire tread contact<br />
area and results in rapid wear in the center of the tire. It<br />
also causes tires to run hard and makes them more vulnerable<br />
to impact and other road hazard damage.<br />
WARNING! Overinflated tires can cause accidents.<br />
They wear more quickly than properly<br />
inflated tires and are more subject to punctures,<br />
cracks, and other damage. They could fail and<br />
cause you to lose control of your vehicle resulting<br />
in an injury accident. Be sure all tires are<br />
inflated correctly according to the manufacturer’s<br />
recommendations.<br />
If overinflation is noted during travel, do not deflate tires. The<br />
increased pressure is caused by temperature build-up during<br />
operation. This condition has been taken into account during<br />
manufacturing of the tires. Allow tires to cool, then recheck<br />
and adjust if necessary.<br />
Tire Loading<br />
Tires and Wheels<br />
WARNING! Do not exceed the load rating of your<br />
tires (molded on the side wall of your tire) or the<br />
maximum vehicle load rating, whichever is less.<br />
Overloading could result in premature tire failure<br />
causing you to loose control of your vehicle<br />
and result in an injury accident. The maximum<br />
vehicle load rating (GVWR) is found on the Tire<br />
and Rim Data label on the driver’s door.<br />
Overloading your vehicle is as damaging to the tires as<br />
underinflation. It significantly affects the expected life (total<br />
mileage of a tire). The following chart shows how neglect or<br />
deliberate abuse can affect the life of your vehicle's tires.<br />
Table 12<br />
Effect of Load Pressure on Tire Life<br />
Vehicle Load Normal 20% Over 40% Over 60% Over 80% Over 100% Over<br />
Tire Pressure Normal 20% Low 30% Low 35% Low 45% Low 55% Low<br />
Expected Total Tire<br />
Mileage<br />
Normal 70% 50% 40% 30% 25%<br />
Model <strong>330</strong> PB1318 3/01 – 175 –