D6K Track-Type Tractor Caterpillar

Note: Replace the secondary filter element when you service the primary element for the third time. If a clean primary element has been installed and the filter element indicator still enters the red zone, replace the secondary filter element. Also if the exhaust smoke remains black and a clean primary filter element has been installed, replace the secondary filter element.

Illustration 1	g01296270

1. Open the left engine access door.

2. Remove the housing cover to the precleaner body assembly.
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   Illustration 2	g01192559
   Secondary air cleaner element

3. Remove the secondary element. The secondary element is on the end of the air cleaner group toward the cab.

4. Cover the air inlet opening. Clean the inside of the air cleaner housing.

5. Inspect the gasket between the air inlet and the housing. If the gasket is damaged, replace the element.

6. Uncover the air inlet opening. Install a new secondary element.

7. Install the air cleaner housing cover.

8. Close the engine access door.