Cummins/Onan — Convert Day Tank Fuel Pump Control from 240 VAC to 120 VAC
Installation · Fuel pump control (day tank controller)
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DGDA, Cummins/Onan DGDB, Cummins/Onan DGDK, Cummins/Onan 6BT5.9 engine, Cummins/Onan 6BTA5.9 engine
Before you start
- Diesel fuel is highly combustible. Improper installation of this kit can lead to spillage of large quantities of fuel and loss of life and property if the fuel is accidentally ignited.
Procedure
- Remove the two jumpers between terminals TB1-6 and TB1-7 in the control box.
- Connect one jumper between terminals TB1-5 and TB1-6 and the other between terminals TB1-7 and TB1-8.
- Move selector switch S103 on the control PCB to the up position for 120 V.
- If the control is equipped with a transformer, remove the two jumpers between terminals H2 and H3 and connect one between H1 and H3 and the other between H2 and H4.
- Attach a tag to the control box indicating the supply voltage.
Specs & values
- Terminals TB1-8 Amazon eBay FridayParts $87.88 and TB1-5 Amazon eBay NAPA $30.91 FridayParts $20.80 available for connection of a 120 or 240 VAC electric fuel shutoff valve rated not more than 0.5 amps
Full service-parts list: Cummins/Onan DGDA →, Cummins/Onan DGDB →
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.