Navistar WorkStar Series, Operator'S Manual

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Inspection Guide
Left Rear of Vehicle
WARNING
Due to tire manufacturers re-marking tires to
conform to the SI (metric) system, tires marked
with old and new loads or inflation pressures
could be placed on the same vehicle. For field
maintenance, only inflate and load tires to the
maximum of the least-rated tire on the axle.
Failure to adhere to this warning could possibly
result in tire malfunction, damage to your vehicle,
personal injury, or death.
1. Brake Chamber and Hoses: Check for cracked, worn,
or frayed hoses, and for secure couplings. Check to
see that the brake chambers are not cracked or dented
and that they are securely mounted. Check for broken,
loose, or missing parts.
2. 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.
3. 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.
4. Frame: Check for cracks or bends in frame. Make sure
there are no loose, cracked, bent, broken, or missing
crossmembers or fasteners.
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