Cummins/Onan DFT — Rotating Rectifier Assembly Testing
For the Cummins/Onan DFT.
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Procedure
- Remove access cover from exciter end of the generator.
- Inspect rotating rectifier assembly for damage or carbon buildup.
- Test rectifier assembly with appropriate testing equipment.
- 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.