Safety Precautions
DANGER
When working on the vehicle, shut down the en-
gine, set the parking brake, and chock the tires.
Before working under the vehicle, always place
jack stands under the frame rails to ensure the
vehicle can not drop. Failure to follow these
steps could result in serious personal injury or
death.
Daily Pretrip Inspection and
Maintenance
Complete the following inspection and maintenance
procedures to ensure that vehicle components are in
good working condition before each trip. A driver who
is familiar with the vehicle and drives it regularly can
perform the daily inspections, then add the weekly
and monthly post-trip inspections as scheduled.
If the driver does not operate the vehicle on a con-
sistent basis, all daily, weekly, and monthly inspec-
tion and maintenance procedures should be per-
formed before the trip.
IMPORTANT: The pre- and post-trip checklists,
inspections, and maintenance procedures de-
tailed in this chapter are not all-inclusive.
Refer to other component and body manufactur-
ers’ instructions for specific inspection and
maintenance instructions, as well as local, state,
and federal guidelines.
NOTE: If any system or component does not
pass this inspection, it must be corrected before
operating the vehicle. Whenever equipment re-
quires adjustment, replacement, and/or repair,
see the 108SD and 114SD Workshop Manual
for procedures and specifications.
Suspension and Slack Adjuster
Inspection
Walk around the vehicle and visually inspect suspen-
sion and slack adjuster components.
1.
Inspect the following suspension components for
signs of structural damage, cracks, or wear.
•
springs
•
spring hangers
•
shocks
•
suspension arms
•
suspension brackets
•
axle seats
•
bushings
2.
Inspect slack adjusters for signs of damage. See
Fig. 21.1, Fig. 21.2,orFig. 21.3.
•
Inspect slack adjuster boots, if equipped,
for cuts or tears.
•
Inspect anchor straps, if equipped, for
damage.
•
Look for worn clevis pins on brake cham-
ber pushrods.
•
Look for missing or damaged cotter pins
on the clevis pins.
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1
2
3
4
5
6
7
8
10
9
1. 7/16-inch Adjusting Nut
2. Grease Fitting
3. Boot
4. Link
5. Brake Chamber Piston Rod
6. Clevis
7. 1/2-inch Clevis Pin
8. 1/4-inch Clevis Pin
9. Grease Relief Opening
10. Slack Adjuster Spline
Fig. 21.1, Gunite Automatic Slack Adjuster
Pre- and Post-Trip Inspections and Maintenance
21.1
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