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Home›Repair guides›Caterpillar›Fuel System Primary Filter - Clean/Inspect/Replace

Caterpillar — Fuel System Primary Filter - Clean/Inspect/Replace

Maintenance

From a Caterpillar owner's manual covering: 3508, 3512, 3512B, 3516, 3516B. Check it applies to your exact model before use.

Applies to: Caterpillar 3508, Caterpillar 3512, Caterpillar 3512B, Caterpillar 3516, Caterpillar 3516B

Before you start

  • Fuel leaked or spilled onto hot surfaces can cause a fire.
  • Do not fill fuel filters with fuel before installing.

Procedure

  1. Stop the engine. Ensure engine will not start. Shut off fuel supply valve.
  2. Loosen nut (2). Hold filter case (1) and remove nut (2). Catch fuel in a container.
  3. Remove element and wash it in clean, nonflammable solvent. Allow to dry. Inspect.
  4. Clean inside of filter case. Allow to dry.
  5. Inspect O-ring seals; obtain new seal rings if damaged. Install seals.
  6. Place element in filter case. Slide filter case over mounting bolt.
  7. Install nut. Open fuel supply valve.
  8. Prime the fuel system.

Full service-parts list: Caterpillar 3508 →, Caterpillar 3512 →, Caterpillar 3512B →, Caterpillar 3516 →, Caterpillar 3516B →

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.

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