Specifications
| Fuel | GaslGaso |
|---|---|
| Standby power | 45 kW |
| Standby kVA | 56 |
| Oil capacity | 6.6 L |
| Voltage options | 12 V |
| Phase | 3 |
| Battery group | 60 |
| Battery voltage | 12 V |
| Coolant capacity | 19 L |
Maintenance & consumables
for the Ford CSG-6491| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Periodic inspections to detect possible problems and replacement of worn or deteriorated parts. | — | |||
| Fuel filter | Replace fuel filter element over the spout in the fuel pump valve housing cover. Use proper type element. | — | |||
| Oil filter | Clean and check oil filter at every oil change. | — | |||
| Oil | Change oil and filter at intervals recommended in the Periodic Maintenance Schedule. | — | |||
| Spark plug | Inspect for cracked or damaged insulators, worn electrodes, damaged gaskets, or excessive carbon deposits. Replace if noted. | — |
Common questions
What is the power rating of the Cummins/Onan 45 kWEM?
The Cummins/Onan 45 kWEM is rated 45 kW standby (56.45 kVA).
Which engine powers the Cummins/Onan 45 kWEM?
The Cummins/Onan 45 kWEM is powered by the Ford CSG-6491 engine.
What fuel does the Cummins/Onan 45 kWEM use?
The Cummins/Onan 45 kWEM runs on GaslGaso.
How much oil does the Cummins/Onan 45 kWEM take?
The Ford CSG-6491 engine in the Cummins/Onan 45 kWEM has an oil capacity of 7.0 liters.
How much coolant does the Cummins/Onan 45 kWEM hold?
The Cummins/Onan 45 kWEM cooling system holds 19 liters (5.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What voltage does the Cummins/Onan 45 kWEM produce?
The Cummins/Onan 45 kWEM is offered in 12 V, 3-phase.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| LO ENG TEMP lamp lights. Set is in standby mode but is not operating. (Lamp lights when engine water jacket temperature is 70°F (21°C) or lower. Since the lamp goes out after the engine warms up, there should be no cause for alarm even during initial generator set operation). | Indicates engine coolant heater is not operating or is not circulating coolant; Coolant heater not connected to power supply; Low coolant level; Possible coolant leakage points | Check for blown fuse or disconnected heater cord and correct as required; Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required; Contact an Onan dealer or distributor if none of the above |
| The FAULT 1 or FAULT 2 fault lamp lights; Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run. | The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time-delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay modes. | |
| Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature and frequency (speed) are within normal limits. | The monitor board or a sensor may be at fault | Reset control. If control will not reset, the monitor board or a sensor may be at fault. Contact an Onan dealer or distributor for service |
| Engine starts from generator control panel but will not start automatically or from a remote panel (Note: Run/Stop/Remote switch must be in the REMOTE position for automatic or remote starting). | Remote circuit breaker is tripped | Reset breaker and restart. Contact an Onan dealer or distributor if breaker trips after resetting |
| Engine will not crank. | Fault lamp on | Correct fault and reset control |
| Engine will not crank. | Poor battery cable connections | Clean the battery cable terminals and tighten all connections |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan 45 kWEM troubleshooting guide (29 entries) →