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Home›Repair guides›Cummins/Onan›Contractor Model Air Cleaner Cleaning

Cummins/Onan 12.5 RDJC / 15.0 RDJC — Contractor Model Air Cleaner Cleaning

Maintenance

For the Cummins/Onan 12.5 RDJC / 15.0 RDJC, from the Cummins/Onan operator's manual.

Applies to: Cummins/Onan 12.5 RDJC, Cummins/Onan 15.0 RDJC, Cummins/Onan RDJC

Before you start

  • Filters should be handled with care to prevent damage; if the filter becomes damaged, install recommended replacement part

Parts for this job

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

Procedure

  1. Remove pre-cleaner and wash out dirt; dry and reinstall.
  2. Loosen clamp and remove end cover.
  3. Remove thumbscrew and take out element.
  4. Wash element in detergent and water (use new element after 6 washings); dry and reinstall.
  5. Remove air cleaner baffle from cover, wash out dirt, and reinstall in cover.
  6. Install cover with "TOP" up and tighten clamp.

Specs & values

  • Polyurethane foam element: after every 50 hours remove and clean element; dip in engine oil and squeeze as dry as possible

Full service-parts list: Cummins/Onan RDJC →

Source: Cummins/Onan 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.

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