Cummins/Onan — Voltage Regulator VRAS-2 Replacement
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Browse Cummins/Onan generators & specs →
Procedure
- Stop the engine, and disconnect starter batteries.
- Disconnect, and if necessary label the wires from VRAS-2/TB1.
- Remove the mounting screws, replace old VRAS-2 with new, and secure in place with mounting screws.
- Reconnect wires removed in step 2 to proper terminals.
- Perform voltage regulator adjustment/switch settings per procedure (K).
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.