Navistar WorkStar Series, Operator'S Manual

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Inspection Guide
4. Frame: Check for cracks or bends in frame. Make sure
there are no loose, cracked, bent, broken, or missing
crossmembers or fasteners.
5. Brake Chamber and Hoses: Check to see that the
brake chambers are not cracked or damaged, and are
securely mounted. Check for broken, loose, or missing
parts. Check for cracked, worn or frayed hoses, and for
secure couplings.
6. Slack Adjuster: Check slack adjuster and chamber
push rod travel. When pulled by hand, push rod
should not move more than approximately one inch.
Angle between push rod and adjuster arm should be
approximately 90 degrees when brakes are applied.
7. Brake Lining and Drum: With brakes released, check
to see that brake linings (where visible) are not
worn excessively thin [less than 1/4 inch (6mm)] or
contaminated by lubricant.
8. Hub: Check for obvious leaks on outside or inside of
wheel. Verify correct oil level in hub.
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. 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.
11. Steering Linkage: Inspect connecting links, arms, and
rods for worn, damaged, loose, or missing components.
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