INSERT-VALVE 7C5381 - Caterpillar

Always replace the secondary element. Do not attempt to reuse it by cleaning. Engine damage could result.
Note: Replace the engine air filter secondary elements when you service the engine air filter primary elements for the third time. Replace the secondary filter elements if the exhaust smoke remains black and the clean primary filter elements have been installed.Note: In order to access the air filter elements, it may be necessary to use a portable access system (ladder, stair assembly, man lift, or other portable access system) that is suitable and compliant to local regulations.
Prepare the machine for maintenance. Refer to Operation and Maintenance Manual, "Prepare the Machine for Maintenance".
Remove the air filter covers and remove the primary filter elements from the air filter housings.
Illustration 1 g01903515
(1) Secondary filter element
Remove secondary filter elements (1) and properly discard the secondary elements.
Cover the air inlet openings. Clean the inside of the air cleaner housings.
Uncover the air inlet openings. Install the new secondary filter elements.
Install the primary filter elements and install the air filter covers.