Service parts for the DQCC
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredElectrical
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 800 kW |
| Standby kVA | 1000 |
| Prime power | 725 kW |
| Emissions | EPA NSPS Stationary Emergency Tier 2 |
| Controller | PowerCommand, PowerCommand 2100 |
| Oil capacity | 12.0 L |
| Alternator | Stamford/AvK HC634 (4-pole, Class F insulation) |
| Voltage options | 110/190 V, 127/220 V, 230/380 V, 277/480 V, 115/200 V, 139/240 V, 240/416 V, 347/600 V, 120/208 V |
| Phase | 3 |
| Rated current | 600 A |
| Power factor | 0.8 |
| Circuit breaker | 600 A |
| Battery group | 6L |
| Battery cranking | 1400 CCA |
| Battery voltage | 24 V |
| Battery quantity | 1 |
| Coolant capacity | 109.5 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 4395×1855×2065 mm |
| Dry weight | 6075 kg |
| Wet weight | 6337 kg |
| Sound level | 75.7 dBA @ 7 m |
| Fuel tank | 120.0 L |
| Tank runtime | 8 hr |
Engine
| Oil capacity | 102.0 L |
|---|---|
| Coolant capacity | 109.5 L |
| Displacement | 23.15 L |
| Aspiration | Turbocharged and low temperature after-cooled |
| Rated speed | 1800 rpm |
Filters for the Cummins/Onan QSK23-G7 NR2
2Engine-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 | |
|---|---|---|---|---|
| Fuel / water separator | P552006 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 | FridayParts $42.88 |
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P551670 | Lube Filter, Spin-On Full Flow | CUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 | FridayParts $26.68 |
Same engine, other brands
1 brandThe Cummins/Onan QSK23-G7 NR2 in this set also powers 2 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 | 800kW Containerized Diesel Generator Set, CG800C2 |
Maintenance & consumables
for the Cummins/Onan QSK23-G7 NR2| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | AF25544 | AF25544 | Amazon eBay $285.93 NAPA $391.96 | ||
| Fuel filter | (1) primary element AF25544; (1) secondary element AF25545, (2) Cummins Filtration FS1006 | — | 500 hr | ||
| Fuel filter | FS1006 | FS1006 | Amazon eBay $29.99 NAPA $90.16 | ||
| Oil filter | Cummins QuickServe® Commitment | LF9325 | 250 hr | Amazon eBay $127.04 KuduParts $74.00 FridayParts $75.99 | |
| Battery | 526−0112 | A048G602 | 500 hr | eBay | |
| Belt | Steel, flanged; Stainless steel flex, NPT | — | 15000 hr | ||
| Coolant | Antifreeze 50/50 (Ethylene glycol) | 109.5 | — | 24000 hr | |
| Coolant filter | Cummins Filtration WF2076 | — | 500 hr | ||
| Oil | Cummins QuickServe® Commitment | — | 250 hr | ||
| Spark plug | — | 500 hr |
Service specifications
13| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Compression ratio | 16:1 | ||
| Pressure | BMEP at set rated load | 2214 | kPa | prime rating |
| Pressure | BMEP at set rated load | 2435 | kPa | standby rating |
| Pressure | Maximum back pressure | 10.1 | kPa | |
| Pressure | Maximum fuel inlet restriction | 13.44 | kPa | |
| Speed | Overspeed limit | 2100 | rpm | |
| Speed | Random frequency variation | ± 0.25% | % | |
| Temperature | Ambient design (standard set-mounted radiator cooling) | 50 | °C | |
| Temperature | Exhaust temperature | 458 | °C | prime rating, at set rated load |
| Temperature | Exhaust temperature | 476 | °C | standby rating, at set rated load |
| Temperature | Maximum fuel inlet temperature | 71 | °C | |
| Voltage | Random voltage variation | ± 0.5% | % | |
| Voltage | Voltage regulation, no load to full load | ± 0.5% | % | no load to full load |
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 filter, automatic electric fuel shutoff |
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
5| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 27 | Low AC voltage shutdown | Voltage on any phase has dropped below a preset value. Adjustable over a range of 50-95% of reference voltage, time delay 2-20 seconds. Default value is 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 | |
| 59 | High AC voltage shutdown | Output voltage on any phase exceeds preset values. Time to trip inversely proportional to amount above threshold. Values adjustable from 105-125% of nominal voltage, with time delay adjustable from 0.1-10 seconds. Default value is 110% for 10 seconds. | Shutdown | |
| 81 o | Over frequency shutdown/warning | Generator set is operating at a potentially damaging frequency level. Settings adjustable from 2-10 Hz above nominal governor set point for a 1-20 second time delay. Default: 6 Hz, 20 seconds, disabled. | Warning | |
| 81 u | Under frequency shutdown | Generator set output frequency cannot be maintained. Settings adjustable from 2-10 Hz below reference governor set point, for a 5-20 second time 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 | Wye | 12/6 | Winding 311/312; ADS-631; feature code BC38-2 |
| 120/240 | 3 | Delta | 12/6 | Winding 311/312 |
| 127/220 | 3 | Wye | 12/6 | Winding 311/312 |
| 133/230 | 3 | Wye | 12/6 | Winding 311/312 |
| 139/240 | 3 | Wye | 12/6 | Winding 311/312 |
| 190/380 | 3 | Wye | Winding 311; ADS-631; feature code BC37-2 | |
| 200/400 | 3 | Wye | Winding 311; ADS-310; feature code BC35-2 | |
| 208/416 | 3 | Wye | Winding 311; ADS-632; feature code BC44-2 | |
| 240/416 | 3 | Wye | 12/6 | Winding 311/312 |
| 254/440 | 3 | Wye | 12/6 | Winding 311/312 |
| 266/460 | 3 | Wye | 12/6 | Winding 311/312 |
| 277/480 | 3 | Wye | 12/6 | Winding 311/312; ADS-631; feature code BC38-2 / B876-2 |
| 280/416 | 3 | Wye | Winding 311; ADS-632; feature code B733-2 | |
| 347/600 | 3 | Wye | 6 | Winding 07; ADS-309; feature code B720-2 |
| 380 | 3 | Wye | Winding 311; ADS-632; feature code BC43-2 | |
| 400 | 3 | Wye | Winding 312; ADS-310; feature code BC36-2 |
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 is the power rating of the Cummins/Onan DQCC?
The Cummins/Onan DQCC is rated 800 kW standby (1000.0 kVA).
What engine does the Cummins/Onan DQCC use?
The Cummins/Onan DQCC is powered by the Cummins/Onan QSK23-G7 NR2 engine.
What fuel does the Cummins/Onan DQCC use?
The Cummins/Onan DQCC runs on Diesel.
How much oil does the Cummins/Onan DQCC take?
The Cummins/Onan QSK23-G7 NR2 engine in the Cummins/Onan DQCC has an oil capacity of 102.0 liters.
What is the cooling system capacity of the Cummins/Onan DQCC?
The Cummins/Onan DQCC cooling system holds 109.5 liters (28.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the continuous rating of the Cummins/Onan DQCC?
The Cummins/Onan DQCC is rated 725 kW prime (906 kVA), against 800 kW standby.
How loud is the Cummins/Onan DQCC?
The Cummins/Onan DQCC is rated at 75.7 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the Cummins/Onan DQCC?
The Cummins/Onan DQCC has a dry weight of 6075 kg (13393 lb).
What size fuel tank does the Cummins/Onan DQCC have?
The Cummins/Onan DQCC has a 120 liter (32 US gallon) fuel tank, giving about 8 hours of runtime.
What voltages is the Cummins/Onan DQCC available in?
The Cummins/Onan DQCC is offered in 110/190 V, 127/220 V, 230/380 V, 277/480 V, 115/200 V, 139/240 V, 3-phase.
What size battery does the Cummins/Onan DQCC need?
The Cummins/Onan DQCC uses 1 battery, 24 V each, 1400 CCA, group 6L, per the manufacturer specification sheet.
Which alternator is fitted to the Cummins/Onan DQCC?
The Cummins/Onan DQCC uses a Stamford/AvK HC634 alternator. It has 4 poles. Insulation class F.
What oil filter does the Cummins/Onan DQCC use?
The Cummins/Onan DQCC uses oil filter part number LF9325.
What fuel filter fits the Cummins/Onan DQCC?
The Cummins/Onan DQCC uses fuel filter part number FS1006.
What air filter fits the Cummins/Onan DQCC?
The Cummins/Onan DQCC uses air filter part number AF25544.
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Battle Short Mode | If a bypassed shutdown fault occurs, the fault code and description will still be annunciated, but the genset will not shutdown. This will be followed by a fail to shutdown fault. |
| Derate | The derate function reduces output power of the genset in response to a fault condition. If a derate command occurs while operating on an isolated bus, the control will issue commands to reduce the load on the genset via contact closures or modbus. |
| Emergency Stop | Annunciated whenever either emergency stop signal is received from external switch. |
| Full Authority Electronic Engine Protection | Engine fault detection is handled inside the engine ECM. Fault information is communicated via the SAE-J1939 data link for annunciation in the HMI. |
| Low and high battery voltage warning | Indicates status of battery charging system (failure) by continuously monitoring battery voltage. |
| Weak battery warning | The control system will test the battery each time the generator set is signaled to start and indicate a warning if the battery indicates impending failure. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan DQCC troubleshooting guide (71 entries) →
Parts
14| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 501-0876 | Line, Fuel Cooler Return (Bearward Cooling System, not shown) | 1 | Hose | Amazon eBay |
| 501-0877 | Line, Fuel Supply (Engine Accessories group) | 1 | Hose | Amazon eBay |
| 501-0892 | Line, Fuel Cooler Supply (Bearward Cooling System, not shown) | 1 | Hose | Amazon eBay |
| 503-1675 | Hose, Reducer (Air Cleaner group) | 1 | Hose | Amazon eBay |
| 503-2754-01 | Hose, Oil | 1 | Hose | Amazon eBay |
| A053A190 | Hose, Oil (Valve group) | 1 | Hose | Amazon eBay |
| A055E534 | Switch, Level (low coolant level warning) | 1 | Sensor | Amazon eBay |
| A059Z452 | Seal, O Ring (Valve group) | 1 | Seal | Amazon eBay |
| AF2559300 | Air Cleaner replacement element (Nelson), for Air Cleaner Housing 140-3737 | 1 | Air filter | Amazon eBay |
| 140-1548 | Indicator, Service | 1 | Service part / kit | Amazon eBay $49.99 NAPA $32.16 |
| 204-009 | Acronyms and Abbreviations | Service part / kit | Amazon eBay | |
| 3822735 | Plastic bead blasting media | 1 | Service part / kit | Amazon eBay |
| 4021375 | QSK23 Troubleshooting and Repair Manual | 1 | Service part / kit | Amazon eBay |
| KS-E368R | Head Office | Service part / kit | Amazon eBay |
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 | 25% | 58.3 | 15.4 |
| Prime | 50% | 100.4 | 26.5 |
| Prime | 60% | 12.0 | 3.2 |
| Prime | 75% | 140.6 | 37.1 |
| Prime | 100% | 178.9 | 47.3 |
| Standby | 25% | 62.7 | 16.6 |
| Standby | 50% | 108.8 | 28.7 |
| Standby | 75% | 152.6 | 40.3 |
| Standby | 100% | 194.1 | 51.3 |
Available documents
This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.