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 122SD and Coronado 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. 20.1 or Fig. 20.2.
•
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.
•
Ensure chamber piston rods are in line
with the slack adjusters.
Wheel and Tire Inspection
Walk around the vehicle and visually inspect each
wheel and tire assembly.
IMPORTANT: Wheel covers decrease drag force
as a vehicle moves, thereby improving fuel effi-
ciency. If replacement of a wheel cover is nec-
essary, the replacement cover must meet or ex-
ceed the drag reduction performance of the
originally installed cover in order to maintain
compliance with greenhouse gas and full effi-
ciency regulations (GHG14).
10/11/2005 f421397
1
2
3
4
5
6
7
8
9
A
1. Clevis
2. Slack Adjuster
3. Clevis Pin
4. Manual Adjusting Nut
5. Control Arm
6. Control-Arm Washers
and Nut
7. Anchor Strap Slot
8. Anchor Strap
9. Brake Chamber
Fig. 20.1, Haldex Automatic Slack Adjuster
Pre- and Post-Trip Inspections and Maintenance
20.1
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