ARM AS 1787278 - Caterpillar

Primary Filter
Service the primary filter element only when the alert indicator for the intake air filter is flashing. Do not open the filter compartment unless it is time for service. Opening the filter compartment can cause dirt to get into the clean side of the filter housing.
Extremely short air filter life can result if the precleaner system malfunctions. If the air filter life is drastically reduced from typical, the precleaner housing may require cleaning. Refer to the procedure in "Engine Air Precleaner - Clean" in this manual.
Service the engine air filters with the engine stopped. Engine damage could result.
Do not use the filter for longer than one year.
Illustration 1 g03722624
Open the engine access door on the left-hand side of the machine.
Illustration 2 g02105115
Remove the air cleaner cover (1). Pull out in order to remove the element.
Remove the primary filter element (2) from the air cleaner housing (4).
Clean the inside of the air cleaner housing (4). Keep the secondary filter element in place while you clean the housing.
Install a new primary air filter.
Do not clean the filter elements by bumping or tapping them. Do not use filter elements with damaged pleats, gaskets, or seals. Do not wash the filter elements.
Push the filter element firmly in order to properly seat the element. Write the date on the element, if the primary element is replaced.
Install the air cleaner cover.
Close the engine access door, if equipped. Secondary Filter
Always replace the secondary filter element. Never attempt to reuse the filter by cleaning.The secondary filter element should be replaced at the time the primary element is serviced for the third time.
The filter should be kept in service for no longer than 1 year.
Always leave the secondary filter element in place while you clean the air cleaner housing.
Open the engine access door.
Illustration 3 g02105115
Remove the air cleaner housing cover (1).
Remove the primary filter element (2). Refer to the section "Primary Filter".
Clean the inside of the air cleaner housing (4).
Remove the secondary filter element (3). Pull out in order to remove the element.
Install a new secondary filter element. Push the element firmly in order to properly seat the element. Write the date on the element, if the element is replaced.
Install the primary filter element and the air cleaner housing cover.
Close the engine access door.