Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Cab Maintenance
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.
WARNING! Failure to adjust tether belts
properly can cause excessive movement of
the seat in an accident. This could lead to
greater injuries for you. Tether belts should
be adjusted so that they are taut when the
seat is in its most upward and forward position.
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
Preventive Maintenance
brown, the physical strength of the web may have deteriorated
due to exposure to the sun's ultraviolet rays.
Replace the system.
Once the need for replacement of the seat belt has been
determined, be certain it is only replaced with an authorized
PACCAR Parts replacement seat belt.
If the inspection indicates that any part of the seat belt system
requires replacement, the entire system must be
replaced. An installation guide is attached to every replacement
belt. Utilize the proper guide for your type of seat, and
follow the instructions very closely. It is vitally important that
all components be reinstalled in the same position as the
original components that were removed and that the fasteners
be torqued to specification. This will maintain the design
integrity of the mounting points for the seat belt assembly.
Contact your Authorized Peterbilt Dealer if you have any
questions concerning seat belt replacement.
Windshield Wiper/Washer
Check wiper blades annually or every 60,000 miles (96,000
km). Anco 18-inch (450mm) wiper blades are recommended.
See “Windshield Wipers/Washer” on page 32 for more information.
– 200 – Y53-6008 Medium Duty (R10/06)