Navistar WorkStar Series, Operator'S Manual

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Inspection Guide
WARNING
Do not operate vehicle if any of the following
conditions are evident.
Loss of steering or
suspension could cause loss of vehicle control
and result in property damage, personal injury,
or death.
WARNING
To prevent personal injury or death from
hot coolant or steam, use only the following
procedure to remove the pressure cap from the
radiator or expansion tank. Allow the engine to
cool first. Wrap a thick, heavy cloth around the
cap. Unscrew the cap slowly to allow pressure
to release from under the cap. After the pressure
has been released, the pressure cap may be
removed.
CAUTION
Retread tires are not recommended for use on
steering axles of trucks.
1. Steering Gear: Look for missing or loose fasteners,
power steering fluid leaks, and damage to power
steering hoses.
2. 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.
3. 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.
4. 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.
5. 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.
6. Shock Absorber: Check for cracks, leaks, and missing
or broken mounting bolts or bushings.
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