Caterpillar 3406 — Clean Primary Fuel Filter
Maintenance · Fuel Filters
For the Caterpillar 3406, from the Caterpillar operator's manual.
Applies to: Caterpillar 3406
Parts for this job
- 3S3875 Fuel filter eBay $49.99
Part numbers from the service-parts list for Caterpillar 3406. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Stop the engine.
- Shut off the fuel tank supply valve.
- Loosen the nut on the filter cover and lower the filter case.
- Remove the element and wash in clean nonflammable solvent.
- Reinstall the element.
Full service-parts list: Caterpillar 3406 →
Source: Caterpillar operator'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.