Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 895 kW |
| Standby kVA | 1200 |
| Prime power | 718 kW |
| Emissions | Tier 2 |
| Controller | PCL - Power |
| Oil capacity | 154.0 L |
| Voltage options | 220 V, 480 V |
| Phase | 3-phase |
| Coolant capacity | 168 L |
| Max ambient | 52 °C |
| Dimensions (L×W×H) | 2621×1448×2021 mm |
| Dry weight | 4297 kg |
| Sound level | 0.0 dBA |
| Fuel tank | 1700.0 L |
Engine
| Oil capacity | 140.0 L |
|---|---|
| Coolant capacity | 201.0 L |
| Displacement | 30.5 L |
| Aspiration | turbocharged, aftercooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Cummins/Onan QST30-G1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Cleaner: Maximum Air Cleaner Restriction, 25.0 in. H2O (6.2 kPa) | — | find | ||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | Lube Oil Filter Types: Four spin-on, full flow; two bypass oil filters | — |
Common questions
What is the power rating of the Cummins/Onan QST30?
The Cummins/Onan QST30 is rated 895 kW standby (1200.0 kVA).
What engine does the Cummins/Onan QST30 use?
The Cummins/Onan QST30 is powered by the Cummins/Onan QST30-G1 engine.
What fuel does the Cummins/Onan QST30 use?
The Cummins/Onan QST30 runs on Diesel.
What is the oil capacity of the Cummins/Onan QST30?
The Cummins/Onan QST30-G1 engine in the Cummins/Onan QST30 has an oil capacity of 140.0 liters.
Troubleshooting
3Fault codes
| Code | Meaning | Remedy |
|---|---|---|
| RAIN | Rain | Repair as soon as convenient |
| SOE | System Over-ride Event | |
| 0 | Check electronic engine controls (fault code lamp) |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
46| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 149-2713-02 | Bracket, Fuel Filter | 1 | Fuel filter | buy |
| 149-2714 | Filter, Fuel - Assembly | 1 | Fuel filter | buy |
| 19200074 | Engine Harness Adaptor Cable | Engine harness adaptor cable | buy | |
| 19a00292 | Engine Speed Sensor | Engine speed sensor | buy | |
| 19a00295 | Fuel Shut-Off Valve | Fuel shut off valve | buy | |
| 19a00296 | Rack Position Actuator (integral to the RP39 fuel pump) | Rack position actuator | buy | |
| 19a00297 | Meter Drivers | Meter drivers | buy | |
| 19a00Z25 | Fuel Pump Rack Actuator Valve | Fuel pump rack actuator valve | buy | |
| 3375049 | Oil filter wrench | 1 | Oil filter | buy |
| 3377193 | Battery tester | 1 | Battery tester | buy |
| 4-25 | OIL PRES SENDER | Thermostat | industrialinjection $525.00 | |
| 4-26 | HIGH COOLANT TEMP Shutdown | Thermostat | buy | |
| 4-27 | LOW COOLANT LVL Shutdown | Thermostat | buy | |
| 4-28 | MAG PICKUP Shutdown | Sensor | woodline $1.58 | |
| 4-31 | HIGH DC VOLTAGE | Hose | buy | |
| 4-33 | EEPROM ERROR Warning/Shutdown | Sensor | buy | |
| 4900294 | Oil Pressure Sensor | Oil pressure sensor | buy | |
| 49400355 | Common Warning Circuit | Common warning circuit | buy | |
| 49400356 | Sleeve Position Activator (integral to the RP39 fuel pump) | Sleeve position activator | buy | |
| 49400361 | Common Alarm Circuit | Common alarm circuit | buy | |
| 501-0839 | Line, Fuel - Flexible | 1 | Hose | buy |
| 518-0601 | Sealant, Thread (6 ml. Tube) | 1 | Fluid | buy |
| 525-0304 | Paint, Onan Green Enamel (Gallon Can) | 1 | Fluid | buy |
| 525-0305 | Paint, Onan Green Enamel (12 oz. Pressurized Spray Can) | 12 | Fluid | buy |
| 525-0306 | Paint, Onan Green Enamel (Quart Can) | 1 | Fluid | buy |
| 5572670 | Thermostat Seal Installation Tool | Thermostat | buy | |
| 78000067 | Coolant Temperature Sensor | Coolant temperature sensor | buy | |
| 960-0504 | PCC Control Service Manual | * | Service manual | buy |
| 960-0507 | Detector Control Service Manual | ** | Service manual | buy |
| CC-2800 | Fleetguard® refractometer | 1 | Refractometer | buy |
| FF0220300 | Filter, Fuel - Replacement - Fleetguard Part Number | Fuel filter | buy | |
| ST1225 | Thermostat Seal Driver | 1 | Thermostat | buy |
| ST669 | water pump type grease listed below, or its equivalent | 1 | Belt | buy |
| 17800008 | Component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component. | Service part / kit | buy | |
| 3375432 | Crack Detection Kit | 1 | Service part / kit | buy |
| 3375434 | Crack Detection Developer | 1 | Service part / kit | buy |
| 4-20 | OVERCRANK Shutdown | Service part / kit | ironwing $0.50 | |
| 4-29 | OVERSPEED Shutdown | Service part / kit | buy | |
| 4-30 | OVERSPEED | Service part / kit | buy | |
| 4-35 | WEAK BATTERY | Service part / kit | buy | |
| 4-36 | HIGH AC VOLTAGE Shutdown | Service part / kit | buy | |
| 4-39 | LOW AC VOLTAGE Shutdown | Service part / kit | buy | |
| 960-0241 | Service part / kit | buy | ||
| 960-0606 | Service part / kit | buy | ||
| 960-0617 | Service part / kit | buy | ||
| C2800 | Fleetguard® refractometer | 1 | 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 |
|---|---|---|---|
| Base | 100% | 246.0 | 64.9 |
| Prime | 25% | 69.0 | 18.2 |
| Prime | 50% | 126.0 | 33.1 |
| Prime | 75% | 185.0 | 48.8 |
| Prime | 100% | 207.0 | |
| Standby | 100% | 204.0 | 53.9 |
Available documents
Engine specSpec sheetReferenceParts manualService manual