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Cummins/Onan QSL9 Generator Set

The Cummins/Onan QSL9 is a 239 kW (320 kVA) standby generator set. It is available at 24 V, 50 Hz. It holds about 26.5 L (7.0 gal) of oil and 15 L (4.0 gal) of coolant, with a maximum ambient rating of 55 °C. The set measures 1624×1064×1463 mm (63.9×41.9×57.6 in) and weighs about 910 kg (2006 lb).

239 kW
Standby
26.5 L
Oil capacity
7
Document types

How to read your Cummins/Onan serial & model number →

Specifications

Frequency50.0 Hz
Standby power239 kW
Standby kVA320
Prime power206 kW
EmissionsEPA Tier 4 Final @ 50 Hz and 60 Hz, EU Stage IIIA @ 50 Hz and 60 Hz
ControllerPowerCommand 1.1
Oil capacity26.5 L
Alternator70 amps
Voltage options24 V
Coolant capacity15.0 L
Max ambient55.0 °C
Dimensions (L×W×H)1624×1064×1463 mm
Dry weight910 kg

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filterDry replaceable element—
Fuel filter—500 hr
Oil filter—1500 hr
Battery1500 amps minimum at ambient temperature of -18 °C (0 °F)—
Belt—2000 hr
Coolant84.0 L—250 hr
Coolant filter—500 hr
Oil132.0—14500 hr

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Service intervals

4
ItemActionHoursMonthsNotes
filtersChange1000 hrwith CENTINEL, depending on load factors
ELIMINATOR self cleaning filter coreOther1500 hrRequires servicing only every 1,500 hours. Saves up to 90% of lube system maintenance costs and increases productivity.
fuel filterChange1500 hrFleetguard NanoNet media
engine oilChange4500 hrwith CENTINEL, railway applications

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

22
TypeItemValueUnitCondition
OtherCompression ratio16.8:1
OtherDB9F-DB9M serial cable length (Part Number 4918418)1.83M
OtherExtension DB9F to DB9M length (Part Number 3162851)30.48M
OtherFrequency regulationIsochronous
OtherGovernor regulation classISO 8528 Part 1 Class G3
OtherINLINE™5 datalink adapter current requirement250mAat +8 VDC to +50 VDC
OtherRandom frequency variation± 0.25%
OtherUSB cable length (Part Number 4918419)2M
OtherUSB cable length (Part Number 4918591)5M
PressureMaximum air cleaner restriction with clean filter3.7kPa (15 in H2O)
PressureMaximum back pressure10.2kPa (41.0 in H2O)
PressureMaximum inlet restriction152.4mm Hg (6.0 in Hg)
PressureMaximum return restriction254.0mm Hg (10.0 in Hg)
SpeedOverspeed limit2100 ± 50rpm
SpeedOverspeed shutdown default115% of nominal
SpeedRated speed1800rpm
TemperatureExhaust temperature600°C (1110 °F)standby at set rated load
TemperatureStandard temperature rise150°CStandby at 40 °C ambient
VoltageINLINE™5 datalink adapter supply voltage (maximum)+50VDCpower lamp fast flashing indicates greater than maximum
VoltageINLINE™5 datalink adapter supply voltage (minimum)+8VDCpower lamp slow flashing indicates less than minimum
VoltageRandom voltage variation± 0.5%
VoltageVoltage 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

FluidGradeStandardAmbientCapacityNotes
FuelNumber 2 diesel fuelDirect 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
CodeNameMeaningSeverityAction
27Low AC voltage shutdownVoltage on any phase has dropped below a preset value; adjustable 50-95% of reference voltage, time delay 2-10 s; default 85% for 10 secondsShutdown
32Reverse power shutdownAdjustment range 5-20% of standby kW rating, delay 1-15 seconds; default 10%, 3 secondsShutdown
51Over current shutdownOutput current on any phase is more than 110%, less than 175% of rating and approaching thermal damage point of alternatorShutdown
59High AC voltage shutdownOutput voltage on any phase exceeds preset values; adjustable 105-125% of nominal with 0.25-10 s delay; default 110% for 10 secondsShutdown
81oOver frequency shutdown/warningAdjustable 0-10 Hz above nominal frequency with 0-20 s time delay; default disabled
81uUnder frequency shutdownGenerator set output frequency cannot be maintained; adjustable 0-10 Hz below nominal governor set point for 0-20 s delay; default 6 Hz, 10 secondsShutdown

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

1
Connect the INLINE™5 Datalink Adapter to a Personal Computer installation

⚠ A fully populated USB cable, Part Number 4918419, or DB9F-DB9M serial cable, Part Number 4918418, must be used.

  1. Connect the DB9F-DB9M serial cable, Part Number 4918418, or USB cable, Part Number 4918419, to the computer.
  2. Connect the other end of that cable to the INLINE™5 datalink adapter, Part Number 3165033.
  3. Supply +8 VDC to +50 VDC at 250mA through the OEM connector or a separate power source.
  4. Connect the appropriate datalink cable to the INLINE™5 datalink adapter, Part Number 3165033.
  5. Connect the other end of the datalink cable to the vehicle cab or engine compartment datalink connector.
  6. Launch the electronic service tool application software.

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

VoltagePhaseConnectionLeadsNotes
120/2083three phase reconnectable12
120/2401single phase non-reconnectable4Double delta, 4 lead
120/2411single phase non-reconnectable
127/2201single phase non-reconnectable
139/2401single phase non-reconnectable
220/3803three phase reconnectable12
240/4163three phase reconnectable12
254/4403three phase reconnectable12
277/4803three phase reconnectable12
347/6003three phase reconnectable12Lower 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?

The Cummins/Onan QSL9 is rated 239 kW standby (320.0 kVA).

What is the coolant capacity of the Cummins/Onan QSL9?

The Cummins/Onan QSL9 cooling system holds 15 liters (4.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the oil capacity of the Cummins/Onan QSL9?

The Cummins/Onan QSL9 has an engine oil capacity of 26.5 liters (28.0 US quarts), per the manufacturer specification sheet.

What is the prime power rating of the Cummins/Onan QSL9?

The Cummins/Onan QSL9 is rated 206 kW prime (276 kVA), against 239 kW standby.

What is the dry weight of the Cummins/Onan QSL9?

The Cummins/Onan QSL9 has a dry weight of 910 kg (2006 lb).

What voltages is the Cummins/Onan QSL9 available in?

The Cummins/Onan QSL9 is offered in 24 V.

Which alternator is fitted to the Cummins/Onan QSL9?

The Cummins/Onan QSL9 uses a 70 amps alternator.

Troubleshooting

1

Fault codes

CodeMeaning
251Unknown J1939 Fault

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

29model family
Part #DescriptionQtySystem
3162850DB9F-DB9M datalink cable1Service part / kit buy
3163096J1939 backbone adapter1Service part / kit buy
3163597J1939 gender changer adapter1Service part / kit buy
3165017Palm universal cable1Service part / kit buy
3165033INLINE™5 datalink adapter1Service part / kit buy
3165141DB25F 2-Pin Weather-Pack and 3-Pin Deutsch with Cigarette Plug connector1Service part / kit buy
3165143Storage Case1Service part / kit buy
3165159Datalink cable (DB25F 9-Pin Deutsch connector)1Service part / kit buy
3165160Datalink cable (DB25F 6-Pin Deutsch connector)1Service part / kit buy
3379000Air For Your EngineService part / kit Amazon eBay
3379001Fuel for Cummins EnginesService part / kit Amazon eBay
3387622Cold Weather OperationService part / kit Amazon eBay
3666132Coolant Requirements and MaintenanceService part / kit Amazon eBay
3666267ISC Wiring and Fault Code DiagramService part / kit Amazon eBay $74.95
3666271Troubleshooting and Repair Manual, ISC, QSC8.3, ISL Electronic Control SystemService part / kit Amazon eBay
3810340Cummins Engine Oil RecommendationsService part / kit Amazon eBay
3824440DB25F 8-Pin AMP connector1Service part / kit buy
4021416Troubleshooting and Repair Manual, CM850 Electronic Control SystemService part / kit Amazon eBay
4021418Troubleshooting and Repair Manual, ISC, QSC8.3, ISL and QSL9 EnginesService part / kit Amazon eBay
4021428Operation and Maintenance Manual, ISC and ISL EnginesService part / kit Amazon eBay
4918417INLINE™5 software compact disc1Service part / kit buy
4918418DB9F-DB9M serial cable1Service part / kit buy
4918436INLINE™4 and 5 Ruggedized protective boot1Service part / kit buy
K19-CP460 kWe1Service part / kit Amazon eBay
K38-CP920 kWe1Service part / kit Amazon eBay
K50-CP1240 kWe1Service part / kit Amazon eBay
QSB6.7MotorService part / kit FridayParts $7.50 SinoCMP $99.00
QSF2.8Electronic, 49 - 74 hp (37 - 55 kW)Service part / kit FridayParts $15.45 SinoCMP $489.00
QSX15QSZ13*Service part / kit Amazon eBay $49500.00 FridayParts $8.65 SinoCMP $149.00

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Base100%66.017.4
Continuous25%17.04.5
Continuous50%31.08.2
Continuous75%46.012.1
Continuous100%50.013.3
Prime25%17.04.5
Prime50%31.08.2
Prime75%46.012.1
Prime100%72.019.1
Standby25%17.04.5
Standby50%31.08.2
Standby75%46.012.1
Standby100%79.021.0

Available documents

Engine spec — 0032276 (Cummins/Onan)Spec sheet — 0042687Spec sheet — 0070371 (Cummins/Onan)Spec sheet — Cummins-DSHAD- 230kW- Submittal (Cummins/Onan)Spec sheet — EMERS-5993-EN (Cummins/Onan)Spec sheet — QSL9-G2 (Cummins/Onan)Spec sheet — QSL9-G8 (Cummins/Onan)Operator's manual — 908-0137 Cummins QSL9G3 Engine Manual (12-2009) (Cummins/Onan)Reference — 0032425 (Cummins/Onan)Reference — 0032436 (Cummins/Onan)Reference — 0058562 (Cummins/Onan)Reference — 0059591 (Cummins/Onan)Reference — 4081872 QuantumRecMarReference — 4081921 CommMarReference — QST30 nuevo (Cummins/Onan)Owner's manual — 4324826 0219 (Cummins/Onan)Owner's manual — 4324827 0617 (Cummins/Onan)Parts manual — 0043090 (Cummins/Onan)Service manual — 22834568 - QSC8.3 and QSL9 Engine OPS (Cummins/Onan)Service manual — ServiceInstructions5 (Cummins/Onan)

This page was generated from the 20 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.