Caterpillar — Engine Air Filter Secondary Element - Replace
Maintenance
From a Caterpillar owner's manual — check it applies to your exact model before use.
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Before you start
- Always replace secondary air filter element. Never reuse by cleaning.
Procedure
- Open engine access door.
- Unlatch air cleaner cover. Rotate and remove cover.
- Remove primary filter element.
- Remove secondary filter element.
- Cover air inlet opening. Clean inside of air cleaner housing.
- Inspect gasket between air inlet pipe and housing. Replace if damaged.
- Uncover inlet. Install new secondary element.
- Install primary element and cover.
- Close engine access door.
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.