Specifications
| Fuel | diesel |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 200 kW |
| Standby kVA | 250 |
| Prime power | 180 kW |
| Oil capacity | 26.5 L |
| Alternator | 70 amps |
| Voltage options | 24 V |
| Coolant capacity | 15.0 L |
| Max ambient | 55.0 °C |
| Dimensions (L×W×H) | 1624×1064×1463 mm |
| Dry weight | 910 kg |
Engine
| Oil capacity | 26.5 L |
|---|---|
| Coolant capacity | 29.5 L |
| Displacement | 8.9 L |
| Aspiration | Turbocharged and CAC |
| Rated speed | 1500 rpm |
Filters for the Cummins/Onan QSL9-G2
4Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P553000 | Lube Filter, Spin-On Full Flow | CUMMINS 3318853, CUMMINS 3825970, NAPA 1748, NAPA 1748XD | FridayParts $125.00 |
| Fuel filter | P550774 | Fuel Filter, Spin-On | CUMMINS 3959612, CUMMINS 5301448, HYUNDAI 11LB70020, WIRTGEN 195744 | KuduParts $34.00 FridayParts $35.90 |
| Fuel / water separator | P550848 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3973233, CUMMINS 4931955, NAPA 3732, LINDE 0019830505 | FridayParts $50.99 |
| Coolant filter | P552071 | Coolant Filter, Spin-On Sca Plus | CUMMINS 299080, CUMMINS 299880, NAPA 4071, TORO 012706560 | FridayParts $37.53 |
Same engine, other brands
1 brandThe Cummins/Onan QSL9-G2 in this set also powers 4 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| MQ Power | 1200 Amp Diesel Studio Generator, 1400 Amp Diesel Studio Generator, 1800 Amp Diesel Studio Generator, EGS1600C3H |
Maintenance & consumables
for the Cummins/Onan QSL9-G2| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Replaceable, Paper insert | — | 100 hr | ||
| Fuel filter | Spin-on type | — | 100 hr | ||
| Oil filter | Full flow, spin-on | — | 100 hr | ||
| Battery | 2 x 750 cca | — | 100 hr | ||
| Belt | Variable Speed Hydraulic Fan Drive | — | 100 hr | ||
| Coolant | 29.5 L | — | |||
| Oil | 26.5 L | — | |||
| Spark plug | N/A | — |
Service intervals
2| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| valve clearance | Check | 2000 hr | B-Series (4BT3.3): valve clearance checks not required for 2000 hours, twice the industry standard | |
| engine overhaul | Other | 20000 hr | QSK23-Series: expected life cycle to 20,000 hours before first overhaul |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
15| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Compression ratio | 16.8:1 | ||
| Other | Frequency regulation | Isochronous | ||
| Other | Governor regulation class | ISO 8528 Part 1 Class G3 | ||
| Other | Random frequency variation | ± 0.25 | % | |
| Pressure | Maximum air cleaner restriction with clean filter | 3.7 | kPa (15 in H2O) | |
| Pressure | Maximum back pressure | 10.2 | kPa (41.0 in H2O) | |
| Pressure | Maximum inlet restriction | 152.4 | mm Hg (6.0 in Hg) | |
| Pressure | Maximum return restriction | 254.0 | mm Hg (10.0 in Hg) | |
| Speed | Overspeed limit | 2100 ± 50 | rpm | |
| Speed | Overspeed shutdown default | 115 | % of nominal | |
| Speed | Rated speed | 1800 | rpm | |
| Temperature | Exhaust temperature | 600 | °C (1110 °F) | standby at set rated load |
| Temperature | Standard temperature rise | 150 | °C | Standby at 40 °C ambient |
| Voltage | Random voltage variation | ± 0.5 | % | |
| Voltage | Voltage regulation, no load to full load | ± 0.5 | % |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | Number 2 diesel fuel | Direct injection fuel system; fuel filter with water separator |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Fault codes
6| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 27 | Low AC voltage shutdown | Voltage on any phase has dropped below a preset value; adjustable 50-95% of reference voltage, time delay 2-10 s; default 85% for 10 seconds | Shutdown | |
| 32 | Reverse power shutdown | Adjustment range 5-20% of standby kW rating, delay 1-15 seconds; default 10%, 3 seconds | Shutdown | |
| 51 | Over current shutdown | Output current on any phase is more than 110%, less than 175% of rating and approaching thermal damage point of alternator | Shutdown | |
| 59 | High AC voltage shutdown | Output voltage on any phase exceeds preset values; adjustable 105-125% of nominal with 0.25-10 s delay; default 110% for 10 seconds | Shutdown | |
| 81o | Over frequency shutdown/warning | Adjustable 0-10 Hz above nominal frequency with 0-20 s time delay; default disabled | ||
| 81u | Under frequency shutdown | Generator set output frequency cannot be maintained; adjustable 0-10 Hz below nominal governor set point for 0-20 s delay; default 6 Hz, 10 seconds | Shutdown |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 120/208 | 3 | three phase reconnectable | 12 | |
| 120/240 | 1 | single phase non-reconnectable | 4 | Double delta, 4 lead |
| 120/241 | 1 | single phase non-reconnectable | ||
| 127/220 | 1 | single phase non-reconnectable | ||
| 139/240 | 1 | single phase non-reconnectable | ||
| 220/380 | 3 | three phase reconnectable | 12 | |
| 240/416 | 3 | three phase reconnectable | 12 | |
| 254/440 | 3 | three phase reconnectable | 12 | |
| 277/480 | 3 | three phase reconnectable | 12 | |
| 347/600 | 3 | three phase reconnectable | 12 | Lower broad range |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What size generator is the Cummins/Onan QSL9-G2?
The Cummins/Onan QSL9-G2 is rated 200 kW standby (250.0 kVA).
What engine does the Cummins/Onan QSL9-G2 use?
The Cummins/Onan QSL9-G2 is powered by the Cummins/Onan QSL9-G2 engine.
Is the Cummins/Onan QSL9-G2 diesel or gas?
The Cummins/Onan QSL9-G2 runs on diesel.
What's the oil capacity on a Cummins/Onan QSL9-G2?
The Cummins/Onan QSL9-G2 engine in the Cummins/Onan QSL9-G2 has an oil capacity of 26.5 liters.
What is the coolant capacity of the Cummins/Onan QSL9-G2?
The Cummins/Onan QSL9-G2 cooling system holds 15 liters (4.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan QSL9-G2?
The Cummins/Onan QSL9-G2 is rated 180 kW prime (225 kVA), against 200 kW standby.
How much does the Cummins/Onan QSL9-G2 weigh?
The Cummins/Onan QSL9-G2 has a dry weight of 910 kg (2006 lb).
What voltages is the Cummins/Onan QSL9-G2 available in?
The Cummins/Onan QSL9-G2 is offered in 24 V.
What alternator does the Cummins/Onan QSL9-G2 use?
The Cummins/Onan QSL9-G2 uses a 70 amps alternator.
Parts
3| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 431PSL6206 | Marathon Magna Plus / 431PSL6206 | 1 | Alternator | Amazon |
| QSL9-G2 | Cummins / QSL9-G2 | 1 | Engine | Amazon |
| 1000A | LCD Ammeter | 1 | Service part / kit | Amazon eBay $4950.85 |
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 |
|---|---|---|---|
| Continuous | 25% | 17.0 | 4.5 |
| Continuous | 50% | 31.0 | 8.2 |
| Continuous | 75% | 46.0 | 12.1 |
| Continuous | 100% | 50.0 | 13.3 |
| Prime | 25% | 17.0 | 4.5 |
| Prime | 50% | 31.0 | 8.2 |
| Prime | 75% | 46.0 | 12.1 |
| Prime | 100% | 56.0 | 14.7 |
| Standby | 25% | 17.0 | 4.5 |
| Standby | 50% | 31.0 | 8.2 |
| Standby | 75% | 46.0 | 12.1 |
| Standby | 100% | 62.0 | 16.3 |
Available documents
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.