Service parts for the 800 DQCC
Grouped by system, with how many of each the parts manual calls for.
Air intake
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 |
| Emissions | Tier 2 |
| Controller | PowerCommand 2.3 |
| Oil capacity | 102.0 L |
| Alternator | Alternator-60Hz,3 Phase,Wye,Limited Range 125C |
| Voltage options | 277/480 V |
| Phase | 3 Phase |
| Circuit breaker | 1200 A |
| Battery voltage | 24 V |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 4762×2083×1595 mm |
| Dry weight | 2262 kg |
| Sound level | 91.3 dBA @ 7 m |
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 |
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 | Air Cleaner replacement element (Nelson), for Air Cleaner Housing 140-3737 | AF2559300 | Amazon eBay | ||
| Fuel filter | 30 micron Racor ® fuel/water separator filter | — | 500 hr | ||
| Oil filter | 4 Spin-on, Full Flow | — | 500 hr | ||
| Battery | 10Amp, 120/208/240VAC, 12/24V, 50/60Hz | A048G602 | 500 hr | eBay | |
| Belt | Belt Driven, Centrifugal | — | |||
| Coolant | -45 | 109.5 | — | ||
| Oil | Oil level is full | 102.0 | — | ||
| Spark plug | not specified | — |
Fault codes
4| 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 | |
| 59 | High AC voltage shutdown | Output voltage on any phase exceeds preset values. Time to trip is 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.
Common questions
What size generator is the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC is rated 800 kW standby.
What engine is in the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC is powered by the Cummins/Onan QSK23-G7 NR2 engine.
What fuel does the Cummins/Onan 800 DQCC use?
The Cummins/Onan 800 DQCC runs on Diesel.
What's the oil capacity on a Cummins/Onan 800 DQCC?
The Cummins/Onan QSK23-G7 NR2 engine in the Cummins/Onan 800 DQCC has an oil capacity of 102.0 liters.
What is the cooling system capacity of the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC cooling system holds 109.5 liters (28.9 US gallons) for the engine, per the manufacturer specification sheet.
What is the sound level of the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC is rated at 91.3 dBA at 7 m, per the manufacturer specification sheet.
What is the dry weight of the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC has a dry weight of 2262 kg (4986 lb).
What voltages is the Cummins/Onan 800 DQCC available in?
The Cummins/Onan 800 DQCC is offered in 277/480 V, 3 Phase-phase.
What alternator does the Cummins/Onan 800 DQCC use?
The Cummins/Onan 800 DQCC uses a Alternator-60Hz,3 Phase,Wye,Limited Range 125C alternator.
What air filter fits the Cummins/Onan 800 DQCC?
The Cummins/Onan 800 DQCC uses air filter part number AF2559300.
Parts
10| 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 |
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.
Available documents
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.