PAD 8M2778 - Caterpillar

Service the air cleaner only with the engine stopped. Engine damage could result.
Short air filter life can result if the precleaner system malfunctions. If air filter life is drastically reduced from typical for the operating conditions, consult you Cat dealer.
Service the engine air filter elements only when the alert indicator for the intake air filter is flashing. Do not open the filter compartment unless service is indicated. Opening the filter compartment can cause dirt to get into the clean side of the filter housing.
Do not use the air filter elements for longer than 1 year.
Service the air cleaner filter elements when the engine fault indicator is activated. The engine fault indicator is located inside the cab. The engine fault indicator will activate when there is an inlet air restriction, and the Information Display will provide a message regarding the specific problem. Refer to Operation and Maintenance Manual, "Monitoring System" for further information.Note: Replace the secondary element when you service the primary element for the third time. If a clean primary element has been installed and a warning for the air filter still occurs, replace the secondary element. Also, replace the secondary element if the exhaust smoke remains black after installation of a clean primary element.
Illustration 1 g03380391
The engine air filter assembly is located behind the access door at the front of the engine enclosure on the right-hand side of the machine.
(1) Engine air filter assembly
(2) Access door
Park the machine on a level surface. Engage the parking brake and stop the engine.
Open access door (2) to service engine air filter assembly (1).
Illustration 2 g03145457
Components of the engine air filter assembly.
(3) Engine air filter assembly housing
(4) Secondary engine air filter element
(5) Primary engine air filter element
(6) Engine air filter assembly housing cover
Release the latches that secure engine air filter assembly housing cover (6). Remove the cover.
Grasp the handle that is molded into primary engine air filter element (5) and pull the element from engine air filter housing (3). Properly dispose of the used primary engine air filter element.
Carefully remove secondary engine air filter element (4) by pulling out on the element with a circular motion. Properly dispose of the used secondary engine air filter element.
Cover the engine air filter assembly housing outlet. This outlet is revealed when the secondary engine air filter element is removed.
Clean the inside of the air filter assembly housing. Note: Thorough cleaning of the housing is necessary so that the primary engine air filter element and the secondary engine air filter element can be installed correctly.
Uncover the engine air filter assembly housing outlet that was covered in step 6.
Always replace the primary and secondary air filter elements. Do not clean the air filter elements. Do not wash the air filter elements. Do not use air filter elements with damaged pleats, gaskets, or seals.
Install a new secondary air filter element into the air filter housing. Push the end of the secondary element firmly, but carefully, to position the element into the air filter housing properly.
Write the date of installation