PAN 4N0919 - Caterpillar

Never run the engine without an air cleaner element installed. Never run the engine with a damaged air cleaner element. Do not use air cleaner elements with damaged pleats, gaskets or seals. Dirt entering the engine causes premature wear and damage to engine components. Air cleaner elements help to prevent airborne debris from entering the air inlet.
Never service the air cleaner element with the engine running since this will allow dirt to enter the engine.
Servicing the Air Cleaner Elements
Note: The air filter system may not have been provided by Caterpillar. The procedure that follows is for a typical air filter system. Refer to the OEM information for the correct procedure.If the air cleaner element becomes plugged, the air can split the material of the air cleaner element. Unfiltered air will drastically accelerate internal engine wear. Refer to the OEM information for the correct air cleaner elements for your application.
Check the precleaner (if equipped) and the dust bowl daily for accumulation of dirt and debris. Remove any dirt and debris, as needed.
Operating in dirty conditions may require more frequent service of the air cleaner element.
The air cleaner element should be replaced at least one time per year. This replacement should be performed regardless of the number of cleanings.Replace the dirty air cleaner elements with clean air cleaner elements. Before installation, the air cleaner elements should be thoroughly checked for tears and/or holes in the filter material. Inspect the gasket or the seal of the air cleaner element for damage. Maintain a supply of suitable air cleaner elements for replacement purposes.Dual Element Air Cleaners
The dual element air cleaner contains a primary air cleaner element and a secondary air cleaner element.The primary air cleaner element can be used up to six times if the element is properly cleaned and properly inspected. The primary air cleaner element should be replaced at least one time per year. This replacement should be performed regardless of the number of cleanings.The secondary air cleaner element is not serviceable. Refer to the OEM information for instructions to replace the secondary air cleaner element.When the engine is operating in environments that are dusty or dirty, air cleaner elements may require more frequent replacement.
Illustration 1 g00736431
(1) Cover
(2) Primary air cleaner element
(3) Secondary air cleaner element
(4) Air inlet
Remove the cover. Remove the primary air cleaner element.
The secondary air cleaner element should be removed and discarded for every three cleanings of the primary air cleaner element.Note: Refer to "Cleaning the Primary Air Cleaner Elements".
Cover the air inlet with tape to keep out dirt.
Clean theinside theair cleaner cover and body with a clean, dry cloth.
Remove the tape from the air inlet. Install the secondary air cleaner element. Install a primary air cleaner element that is new or cleaned.
Install the air cleaner cover.
Reset the air cleaner service indicator. Cleaning the Primary Air Cleaner Elements
Refer to the OEM information to determine the number of times that the primary filter element can be cleaned. When the primary air cleaner element is cleaned, check for rips or