Navistar WorkStar Series, Operator'S Manual

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Inspection Guide
5. 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.
6. Hub: Check for obvious leaking on outside or inside of
wheel. Inspect axle flanges and wheel seals for leaks
and loose mounting hardware or broken items. Check
lube level, if equipped with sight glass.
7. Spring Suspension: Check condition of spring for
cracks, breaks, or shifting. Inspect spring hanger
fasteners, shackles, U-bolts, and nuts for wear, damage,
and tightness.
8. Torque Rods and Shock Absorbers: Check to see that
torque rods are not cracked, broken or missing. Check
shock absorbers for cracks or leaks. There should be
no missing or, broken mounting bolts or worn bushings.
9. Air Suspension (if equipped): Check for air leaks, loose
components, and damage to air bag. Inspect ride height
valve and linkage for damage.
10. Frame: Check for cracks or bends in frame. Make sure
there are no loose, cracked, bent, broken, or missing
crossmembers or fasteners.
• Air Lines and Wiring: Check air lines and electrical wiring for
proper security, damage, and chafing. Listen for audible air
leaks.
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