Kenworth T410, Driver'S Handbook Manual

Page: 294 / 418

Page 268 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
SAFETY RESTRAINT SYSTEM
The seatbelt system, including webbing, buckles, latches and mounting
hardware, endures heavy use in heavy-duty vehicles - much more than
seatbelt systems in passenger cars. All users should be aware of the
factors contributing to this heavy use and reduced belt life.
Failure to properly inspect and maintain 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 protect you in an accident.
Factors contributing to reduced seat belt life:
• High mileage - Heavy trucks often accumulate mileage in excess
of 1,000,000 kilometres during the vehicle lifetime. This is much
greater than a typical passenger car, which frequently will not
exceed 200,000 kilometres.
• 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 contribute to the wear of the entire system.
• Environmental conditions, such as dirt and ultraviolet rays from the
sun, will reduce the life of the seatbelt system.
Due to these factors, the three-point seatbelt system installed in your
vehicle requires thorough inspection every 30,000km. If the vehicle is
exposed to severe environmental or working conditions, more frequent
inspections may be necessary.
Any seatbelt system that shows cuts, fraying, extreme or unusual wear,
significant discolouration due to UV (ultraviolet) exposure, abrasion to the
seatbelt webbing, or damage to the buckle, latch plate, retractor hardware
or any other obvious problem should be replaced immediately, regardless
of mileage.