Cummins/Onan — Reconnection
Adjustments · Generator bus-bars (12 lead)
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DFM
Procedure
- Reconnect bus-bars for the different voltage per Figure 16
- Reconnect lead from terminal 63 (inside control box) to either H3, H4 or H5
- Select the proper tap on voltage reference transformer (T21) per Figure 2
Specs & values
- Terminal 63 to H3, H4 or H5
- Adjust voltage regulator tap on TB21 terminal in control cabinet
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.