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Cummins/Onan DFT — Rotating Rectifier Assembly Testing

For the Cummins/Onan DFT.

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Procedure

  1. Remove access cover from exciter end of the generator.
  2. Inspect rotating rectifier assembly for damage or carbon buildup.
  3. Test rectifier assembly with appropriate testing equipment.
  4. Reassemble and secure access cover.

Tools required

  • Access tools
  • Testing equipment

Source: manual:960-0303 Onan DFT Parts Manual (4-1968).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.