Seats
72
SEAT BELTS
Safety Restraint System - Inspection
The seat belt system, including webbing, buckles, latches, and mounting hardware,
endures heavy use in heavy-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 maintain restraint systems can lead
to injury or loss of life. Without periodic inspection and
maintenance to detect unsafe conditions, seat restraint
components can wear out or not protect 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 passenger car, which frequently will not exceed 125,000 total miles
(200,000 km).
- Seat and cab movement in trucks, there is almost constant 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 system.
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