Cummins/Onan — Fuel Pump Control AC Voltage Conversion (240 VAC to 120 VAC)
Installation · fuel transfer pump control
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DFGB, Cummins/Onan DFGE, Cummins/Onan DFLB, Cummins/Onan DFLC, Cummins/Onan DFLE, Cummins/Onan VTA28-G5 engine, Cummins/Onan KTA50 engine
Before you start
- Diesel fuel is highly combustible; installation must be performed by trained personnel per applicable codes
Procedure
- Remove jumpers between TB1-6 and TB1-7 in control box
- Connect jumper between TB1-5 and TB1-6, and another between TB1-7 and TB1-8
- Move selector switch S103 on control PCB to up position for 120V
- If equipped with transformer, remove jumpers between H2/H3 and connect H1-H3 and H2-H4
- Attach tag to control box indicating supply voltage
Full service-parts list: Cummins/Onan DFGB →, Cummins/Onan DFGE →, Cummins/Onan DFLB →, Cummins/Onan DFLC →, Cummins/Onan DFLE →
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.