Navistar WorkStar Series, Operator'S Manual

Page: 194 / 258

Maintenance Instructions
Air Cleaner Element Service
This vehicle comes with a selection of two air cleaner options.
The first option is a single element. The second option is a
dual element air cleaner that is available for applications in
excessively dusty environments that may require more frequent
service intervals. The secondary element is inside the primary
element and prevents contaminants from entering the engine
air intake system during service of the primary element, or in
cases where the primary element becomes damaged.
Both
options are serviced in a similar manner.
NOTE: Do not change the air cleaner element configuration
from the factory installed configuration. If equipped with a single
element or dual element that configuration must stay with the
vehicle. Failure to comply may affect engine performance.
Your vehicle has either a round or square type air cleaner, refer
to the following for air cleaner element service.
1. Air Cleaner Housing Cover
2. Tab
182
3879634R1