Cummins/Onan RGA-IN1 — Voltage Regulator Replacement
Repair & overhaul
For the Cummins/Onan RGA-IN1, from the Cummins/Onan service manual.
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Procedure
- Stop generator set and disconnect starting battery leads, negative (-) lead first.
- Unscrew voltage regulator from AC control box.
- Unplug regulator from wiring harness.
- Remove mounting screws from old regulator, install new regulator.
- Reconnect plug connection to wiring harness.
- Set voltage as outlined in Voltage Adjustment test.
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.