Cummins/Onan — Day Tank Controller Operation (Fuel Transfer Pump)
Operation · Fuel transfer pump control
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DFGB, Cummins/Onan DFGE, Cummins/Onan VTA28 engine
Before you start
- RUPTURE BASIN indicator: fuel has flooded the safety basin surrounding the fuel tank; the basin float switch turns off the fuel pump and the pump cannot function until the basin is drained. Possible leak in fuel tank.
Procedure
- Activate the control ON switch for automatic operation. The PUMP light will come on and the pump will fill the tank.
- The level of fuel in the tank is automatically kept between a set of pump-on and pump-off float gauge switches.
- The PUMP light indicates when the pump is running; it goes on and off as fuel is pumped to maintain the proper level.
Full service-parts list: Cummins/Onan DFGB →, Cummins/Onan DFGE →
Source: Cummins/Onan operator's 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.