Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 40 kW |
| Standby kVA | 50 |
| Prime power | 40 kW |
| Controller | Detector, Detector 7, PowerCommand 3100, Sentinel |
| Oil capacity | 11.0 L |
| Voltage options | 24 V |
| Phase | 1 or 3 |
| Power factor | 0.8 |
| Battery group | 800 |
| Battery cranking | 1000 CCA |
| Battery voltage | 24 V |
| Battery quantity | 2 |
| Coolant capacity | 25 L |
| Max ambient | 35 °C |
Engine
| Coolant capacity | 17.3 L |
|---|---|
| Displacement | 3.9 L |
| Aspiration | Natural |
| Rated speed | 1500 rpm |
Maintenance & consumables
for the Cummins/Onan 4B3.9-G2| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 250 hr | find | ||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | 250 hr | find | ||
| Coolant | 21.0 liters | — | |||
| Coolant filter | — | find | |||
| Oil | SAE 10W30, 15W40, or 20W40 | 12.0 liters | — |
Common questions
What is the power rating of the Cummins/Onan 40 DGBC?
The Cummins/Onan 40 DGBC is rated 40 kW standby (50.0 kVA).
What engine does the Cummins/Onan 40 DGBC use?
The Cummins/Onan 40 DGBC is powered by the Cummins/Onan 4B3.9-G2 engine.
What fuel does the Cummins/Onan 40 DGBC use?
The Cummins/Onan 40 DGBC runs on Diesel.
Parts
10| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 982-0200 | Air Filter | 6 | Air filter | buy |
| LS-1167 | OIL FILTER | Oil filter | buy | |
| 928-0502B | Service part / kit | buy | ||
| 928-0506 | Service part / kit | buy | ||
| 960-0135 | Service part / kit | buy | ||
| 960-0504A | Service part / kit | buy | ||
| 960-0505 | Service part / kit | buy | ||
| 960-12 | Service part / kit | buy | ||
| 965-0520 | Cooling Fan | 37 | Service part / kit | buy |
| LS-1168 | OIL FILL AND DIPSTICK LOCATION | Service part / kit | buy |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | |||
| Standby |
Available documents
Operator's manualParts manualService manual