Navistar WorkStar Series, Operator'S Manual

Page: 37 / 258

Inspection Guide
Right Engine Compartment
1. Cowl Vent: Ensure air inlet cover is free of dirt and
debris.
2. Air Cleaner: Check air cleaner element, housing, and
hoses for loose connections or damage. Check filter
minder gauge for restriction reading.
For element
replacement, see Air Cleaner Element Service in the
Maintenance section.
3. Drive Belts: Inspect all belts for frays, cracks, loose
fibers, or visible signs of wear. With engine off, press
on all belts to test for proper belt tensioner performance
4. Radiator and Charge Air Cooler: Check for loose
mounting and damage. Inspect condition of all hoses
for damage, cracks, and leaks.
Inspect for foreign
material on face of cooling package. Carefully brush
away collected materials without bending cooling fins to
maintain proper airflow through cooling package.
• Air Lines and Wiring: Check air Lines and electrical wiring
for proper security, damage, and chafing. Listen for audible
air leaks.
• Leaks: Check for signs of fluid puddles under vehicle, or wet
components in the engine compartment.
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