ADJUSTER AS-BK 2516568 - Caterpillar

An air recirculation filter element plugged with dust will result in decreased performance and service life to the air conditioner or cab heater.To prevent decreased performance, clean the filter element, as required.
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The cab fresh air filter is mounted on the front of the cab.
Unlock the clips and remove the air filter cover.
Tap the air filter to remove the dirt. Do not use compressed air to clean the filter.
After you clean the filter element, inspect the filter element. If the filter element is damaged or badly contaminated, use a new filter element. Make sure that the filter element is dry.
Reposition the air filter cover.
Failure to reinstall the filter element for the air conditioning system will contaminate and damage the system components.