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Home›Repair guides›Cummins/Onan›Lubricating Oil Filter - Replacement

Cummins/Onan — Lubricating Oil Filter - Replacement

Maintenance

From a Cummins/Onan service manual covering: 4B3.9, 4BT 3.9, 4BTA 3.9, 6B5.9, 6BT 5.9, 6BTA5.9. Check it applies to your exact model before use.

Applies to: Cummins/Onan 4B3.9, Cummins/Onan 6BTA5.9

Parts for this job

Part numbers from the service-parts list for Cummins/Onan 4B3.9. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Remove the lubricating oil filter.
  2. Fill the filter with clean lubricating oil.
  3. Apply a light coat of oil to the sealing gasket.
  4. Install the lubricating oil filter.
  5. Use Part No. 3823494.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Cummins/Onan 4B3.9 →

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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