CAB MAINTENANCE PREVENTIVE MAINTENANCE
– 230 – Y53-6033
Regional Haul (R05/10)
tion 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 mile-
age 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 characteris-
tics 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 sys-
tem.
• Environmental conditions, such as dirt and ultraviolet
rays from the sun, will reduce the life of the seat belt
system.
Due to these factors, the three-point safety belt system
installed in your vehicle requires thorough inspection
every 20,000 miles (32,000 km). If the vehicle is exposed
to severe environmental or working conditions, more fre-
quent inspections may be necessary.
Any seat belt system that shows cuts, fraying, extreme or
unusual wear, significant discoloration due to UV (ultravi-
olet) exposure, abrasion to the seat belt webbing, or dam-
age to the buckle, latch plate, retractor hardware or any
other obvious problem should be replaced immediately,
regardless of mileage.
WARNING! It is important to remember that
any time a vehicle is involved in an accident,
the entire seat belt system must be replaced.
Unexposed damage caused by the stress of
an accident could prevent the system from
functioning properly the next time it is
needed, which could result in severe injury or
even death.
