Volvo VNL 780 Operator's Manual page 292

282 OPERATION
All hardware for safety belt mounting points should be evaluated for corrosion. All
attachment points of the system should be checked for tightness of mounting hardware.
Check the web in areas exposed to ultraviolet rays from the sun or extreme dust or dirt. If
the original color of the web in these areas is extremely faded, the physical strength of this
web may have deteriorated. If this condition exists, replace the safety belt system.
Important Facts About Safety Belts in Heavy Trucks
The high mileage associated with heavy trucks, the continual relative movement of the seat
with the cab, the possible contact with the vehicle seat or other parts of the cab structure, and
the potential exposure of this safety belt to severe environmental conditions make it crucial
to inspect the seat belt system regularly. It is recommended that the system is inspected every
24,000 km (15,000 miles) or more often if the vehicle is exposed to severe environmental or
vocational conditions. Any safety belt system that shows cuts, fraying, extreme or unusual
wear, significant discolorations due to ultraviolet ray exposure, dusty-dirty conditions,
abrasion to the safety belt webbing or damage to the buckle, latch plate, retractor, hardware
or any other obvious problem should be replaced immediately, regardless of the mileage.
Once replacement of the safety belt has been determined necessary, be certain that it is
replaced only with a Volvo original replacement safety belt. See your authorized Volvo
Truck dealer for replacement. Your Volvo safety belt system has been developed and tested
specifically for heavy trucks. Replace it only with the exact same design that the vehicle
was equipped with.
If the inspection indicates that any other part of the safety belt system requires replacement,
the entire belt system must be replaced. An installation guide is attached to every
replacement system, entitled "Three-Point Safety Belt Installation Guide." There are
separate safety belt instruction guides for suspension and stationary seats. Use the proper
guide for your type of seat and follow the instructions very closely. It is vitally important
that all components are mounted back in the same positions as the original components
that were removed. This will maintain the design integrity of the mounting points for the
safety belt assembly.