Seats
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1. Check the web wear in the system. The webbing must be closely examined to
determine if it is coming into contact with any sharp or rough surfaces on the
seat or other parts of the cab interior. These areas are typical places where the
web will experience cutting or abrasion. Cuts, fraying, or excessive wear would
indicate the need for replacement of the seat belt system.
2. The pillar web guide (D-loop) is the area where almost constant movement of
the seat belt webbing occurs because of relative movement between the seat
and cab.
3. Check the Comfort Clip for cracks or possible damage and check for proper
operation.
4. Check buckle and latch for proper operation and to determine if latch plate is
worn, deformed, or damaged.
5. Inspect the retractor web storage device, which is mounted on the floor of the
vehicle, for damage.
The retractor is the heart of the occupant restraint system and can often be
damaged if abused, even unintentionally. Check operation to ensure that it is not
locked up and that it spools out and retracts webbing properly.
6. If tethers are used, be sure they are properly attached to the seat and, if
adjustable, that they are adjusted in accordance with installation instructions.
Tethers must also be inspected for web wear and proper tightness of mounting
hardware.
7. Mounting hardware should be evaluated for corrosion, and for tightness of bolts
and nuts.
8. Check web in areas exposed to ultraviolet rays from the sun. If the color of the
web in these areas is gray to light brown, the physical strength of the web may
have deteriorated due to exposure to the sun's ultraviolet rays. Replace the
system.
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