994K Wheel Loader Caterpillar

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.

Reference: For additional information about servicing the engine air filter elements, refer to Operation and Maintenance Manual, "Engine Air Filter Primary Element - Replace".

1. Park the machine on a level surface. Stop the engine and engage the parking brake.
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   Illustration 1	g02604996

2. There are six latches (1) that hold filter cover (3) onto the filter housing. Release the latches and remove the filter cover from each filter housing.

3. Remove primary filter element (2) from each air filter housings.
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   Illustration 2	g02605696

4. Remove secondary filter elements (4) and properly discard the secondary elements.

5. Cover the air inlet openings. Clean the inside of the air cleaner housings.

6. Uncover the air inlet openings. Install the new secondary filter elements.

7. Write the date of installation on the secondary air filter elements.

8. Install the primary filter elements and install the air filter covers.