Navistar WorkStar Series, Operator'S Manual

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Inspection Guide
7. Air Suspension (if equipped): Check for air leaks, loose
components, and damage to air bag. Inspect stabilizer
bar for worn, loose, or damaged components.
8. Tires: Check tread depth and tire inflation and note if
tread is evenly worn. Minimum tread depth is 2/32 inch
on all drive tires.
Look for cuts or other damage to
the tread sidewalls. See if valve caps and stems are
missing, broken, or damaged. Check dual spacing to
ensure that dual wheels, mounted on the same wheel
end, are evenly separated and that tire sidewalls are not
touching one another.
9. Wheel and Wheel Nuts: Check for damaged or bent
wheel. Check to see that all wheel nuts are present and
not loose (look for rust trails around nuts). Ensure that
no cracks or damage are present at wheel mount holes.
10. Hub: Check for obvious leaks on outside or inside of
wheel. Verify correct oil level in hub.
11. Frame: Check for cracks or bends in frame. Make sure
there are no loose, cracked, bent, broken, or missing
crossmembers or fasteners.
12. Steering Linkage: Inspect connecting links, arms, rods,
and steering intermediate shaft for worn, damaged,
loose, or missing components.
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