this article mainly introduces caterpillar engine air filter secondary element - replace
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NOTICE Always replace the secondary filter element. Never at-
tempt to reuse it by cleaning.
The secondary flter element should be replaced at the time the primary element is serviced for the third time.
The secondary filter element should also be replaced if the yellow piston in the filter element indicator enters the red zone after installation of a clean primary ele-
ment, or if the exhaust smoke is still black.
1. Pull the hood release lever(1) in order to open the engine access door (2) on the top of the machine.
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2. Remove the air cleaner housing cover(1).
3. Remove the primary filer element (2) from the air cleaner housing.
4.Remove the secondary flter element.
6.Inspect the gasket between the air inlet pipe and the air cleaner housing.Replace the gasket if the gasket is damaged.
7.Uncover the air inlet opening.Install a new secondary element.
8.Install the primary element and the air cleanerhousing cover.Fasten the clips in order to secure the air cleaner housing cover.
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9.Reset the flter element indicator.
10.Close the engine access door.
