Always replace the secondary filter element. Never attempt to reuse it by cleaning.
The secondary filter 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 element, or if the exhaust smoke is still black.
The filter should be kept in service for no longer than one year.
Always leave the secondary filter element in place while you clean the air cleaner housing.
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 engine air filter indicator still flashes, 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.
- Open the access cover (if equipped).
- Remove the housing cover and the primary element.
Illustration 1 g00122932
- Remove the secondary element.
- Cover the air inlet opening. Clean the inside of the air cleaner housing.
- Inspect the gasket between the air inlet and the housing. If the gasket is damaged, replace the gasket.
- Uncover the air inlet opening. Install a new secondary element. Tighten the nuts to a torque of
27 ± 7 N·m (20 ± 5 lb ft).
- Install the primary element and the air cleaner housing cover. Tighten the bolts finger tight. Do not use a tool to tighten the cover bolts.
- Close the access cover (if equipped).
- Repeat the procedure on the air filter on the opposite side of the machine.