TOOL G.-MASTER 4H8765 - Caterpillar

Always replace the secondary element. Do not attempt to reuse it by cleaning. Engine damage could result.
Service the air cleaner only with the engine stopped. Engine damage could result.
Note: Replace the engine air filter secondary element when you service the engine air filter primary element for the third time. If a clean primary element has been installed and the window of the engine air filter service indicator is red, replace the secondary element. Also if the exhaust smoke remains black and a clean primary element has been installed, replace the secondary element.
Illustration 1 g00635673
Release retaining clips (1) .
Remove air cleaner cover (2) .
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Remove primary element (3) .
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Secondary element (4) is a tight fit in the air cleaner housing. Carefully release the secondary element seal by rocking or twisting the secondary element. Remove secondary element (4) from air cleaner housing (5) .
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Cover the air inlet opening. Clean the inside of air cleaner housing (5) .
Uncover the air inlet opening. Install a new secondary element (4) .
Install primary element (3) and air cleaner cover (2). Fasten retaining clips (1) .