OPERATOR'S MANUAL

Cab Maintenance Preventive Maintenance
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PB1318 3/01 Model 330
At least every spring, flush these materials from the under
body with plain water. Be sure to clean any area where mud
and other debris can collect. Sediment packed in closed
areas of the frame should be loosened before being flushed.
If desired, your Peterbilt Dealer or Authorized Service Center
can do this service for you.
Cleaning Interior Vinyl and Upholstery
• Wipe vinyl upholstery and lining with a good commercial
upholstery cleaner. Do not use acetone or lacquer thin-
ner.
• Clean fabric upholstery with upholstery shampoo spe-
cially formulated for this purpose. Follow instructions on
the container.
Safety Restraint System — Inspection
The seat belt system, including webbing, buckles, latches,
and mounting hardware, endures heavy use in medium-duty
vehicles—much more than seat belt systems in passenger
cars. All users should be aware of the factors contributing to
this heavy use and reduced belt life.
WARNING! Failure to properly inspect and main-
tain restraint systems can lead to serious injury
or loss of life. Without periodic inspection and
maintenance to detect unsafe conditions, seat
restraint components can wear out or not pro-
tect you in an accident.
Factors contributing to reduced seat belt life:
• High mileage—heavy trucks often accumulate mileage
in excess of 500,000 total miles (800,000 km) during the
vehicle lifetime. This is much greater than a typical pas-
senger car, which frequently will not exceed 125,000
total miles (200,000 km).
• Seat and cab movement—in trucks, there is almost con-
stant movement of the belt due to ride characteristics
and seat design. The constant movement of the belt
inside the restraint hardware and the potential for the belt
to come in contact with the cab and other vehicle parts,
contributes to the wear of the entire system.
• Environmental conditions, such as dirt and ultraviolet
rays from the sun, will reduce the life of the seat belt sys-
tem.