
INSPECTION OF THE RESTRAINT SYSTEM
PART 5: SEAT AND RESTRAINT SYSTEMS
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Y53-6032
(R05/10)
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 typ-
ical places where the web will experience cutting or
abrasion. Cuts, fraying, or excessive wear would indi-
cate the need for replacement of the seat belt system.
2. The D-loop web guide is the area where almost con-
stant movement of the seat belt webbing occurs
because of relative movement between the seat and
the cab.
3. Check the comfort feature for cracks or possible dam-
age and that it works properly.
4. Check the buckle and latch for proper operation and
to determine if the latch plate is worn, deformed, or
damaged.
5. Inspect the retractor web storage device, that is
mounted on the floor or B-pillar of the vehicle for dam-
age. The retractor is the heart of the occupant
restraint system and can often be damaged if abused,
even unintentionally. Check retractor web storage
device operation to ensure that it is not locked up and
that it spools out and retracts webbing properly.
WARNING! Failure to adjust tether belts prop-
erly can cause excessive movement of the
seat in an accident. This could lead to death
or serious injury. Tether belts should be
adjusted so that they are taut when the seat is
in its most upward and forward position.
6. If adjustable tethers are being used, be sure they are
adjusted in accordance with installation instructions.
Tethers must also be inspected for web wear, just as
with the seat belt systems.
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 this web may
have deteriorated due to exposure to the sun’s ultravi-
olet rays; replace the system.
Y53-6032.book Page 86 Monday, May 24, 2010 3:37 PM
Summary of Contents for Peterbilt 587
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