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Home›Repair guides›Cummins/Onan›Replacing the Fuel Filter

Cummins/Onan RV QD 3200 — Replacing the Fuel Filter

Maintenance

For the Cummins/Onan RV QD 3200, from the Cummins/Onan service manual.

Applies to: Cummins/Onan HDZAA, Cummins/Onan RV QD 3200

Before you start

  • Diesel fuel is combustible. Close any fuel line shutoff valve before disconnecting the fuel line.
  • Accidental or remote starting can cause severe personal injury or death.
  • Dirt can damage the fuel system.

Parts for this job

Part numbers from the service-parts list for Cummins/Onan HDZAA. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Have paper towels or rags ready to clean the two fuel hose fittings and absorb any fuel that spills.
  2. Clean the two fuel hose fittings to keep dirt from entering the fuel hoses.
  3. Loosen the two fuel hose clamps and the filter body clamp and replace the filter element. Make sure the arrow points up in the direction of fuel flow.
  4. Dispose of the fuel filter and paper towels or rags in accordance with local environmental regulations.
  5. Secure the front access door.

Full service-parts list: Cummins/Onan HDZAA →

Source: Cummins/Onan service 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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