HomeCummins/OnanCummins/Onan DGCB

Cummins/Onan DGCB Generator Set

The Cummins/Onan DGCB is a 60 kW (75 kVA) diesel standby generator set powered by a Cummins/Onan 4BT3.9 engine. It is available at 120/208 V, 127/220 V, 240/416 V, 277/480 V, 120/240 V, 139/240 V, 254/440 V, 220/380 V and 347/600 V, 3-phase and 60 Hz. It holds about 11.5 L (3.0 gal) of oil and 16.9 L (4.5 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 1 group-4 battery rated 1080 CCA at 12 V. The set measures 2104×1016×1207 mm (82.8×40.0×47.5 in), weighs about 780 kg (1720 lb) and produces 67 dBA at 7 m. An integrated tank holds 341 L (90.1 gal), roughly 17.8 hours of runtime.

60 kW
Standby
3.9 L
Displacement
11.5 L
Oil capacity
4
Document types

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

Compare with other 60–65 kW Diesel generators →

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power60 kW
Standby kVA75
Prime power55 kW
EmissionsTier 1
ControllerDetector, PowerCommand, PowerCommand 2100, PowerCommand 3100, PowerCommand PCC2100, Sentinel
Oil capacity11.5 L
AlternatorCummins/Onan 12-lead reconnectable alternator fitted with voltage selection switch
Voltage options120/208 V, 127/220 V, 240/416 V, 277/480 V, 120/240 V, 139/240 V, 254/440 V, 220/380 V, 347/600 V
Phase3
Power factor0.8
Battery group4
Battery cranking1080 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity16.9 L
Max ambient40 °C
Dimensions (L×W×H)2104×1016×1207 mm
Dry weight780 kg
Sound level68.0 dBA @ 7 m
Fuel tank341.0 L
Tank runtime17.8 hr

Engine

Cummins/Onan 4BT3.9
Coolant capacity17.7 L
Displacement3.9 L

Maintenance & consumables

for the Cummins/Onan 4BT3.9
ItemSpecCapacityPart #Interval
Air filterCummins engine Operation and Maintenance Manual8760 hr find
Fuel filterCummins engine Operation and Maintenance Manual50 hr find
Oil filterCummins engine Operation and Maintenance Manual500 hr find
BeltCummins engine Operation and Maintenance Manual find
CoolantCummins engine Operation and Maintenance Manual
Coolant filter find
OilCummins engine Operation and Maintenance Manual500 hr

Common questions

What is the power rating of the Cummins/Onan DGCB?

The Cummins/Onan DGCB is rated 60 kW standby (75.0 kVA).

What engine does the Cummins/Onan DGCB use?

The Cummins/Onan DGCB is powered by the Cummins/Onan 4BT3.9 engine.

What fuel does the Cummins/Onan DGCB use?

The Cummins/Onan DGCB runs on diesel.

What alternator does the Cummins/Onan DGCB use?

The Cummins/Onan DGCB uses a Cummins/Onan 12-lead reconnectable alternator fitted with voltage selection switch alternator.

Troubleshooting

80

Fault codes

CodeMeaningRemedy
F01Generator does not start.Check the battery voltage and ensure it is above 12V. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting.
F02Generator produces low output power.Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting.
F03Generator produces excessive noise.Check the engine oil level and ensure it is within the recommended range. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting.
F04Generator produces excessive vibration.Check the engine mounts for any damage or wear. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting.
F05Generator produces excessive exhaust smoke.Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting.
F06Generator produces excessive heat.Check the cooling system for any leaks or blockages. Verify that the coolant level is within the recommended range. Refer to the Fault Code Table for further troubleshooting.
F07Generator produces excessive oil consumption.Check the engine oil level and ensure it is within the recommended range. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting.
F08Generator produces excessive fuel consumption.Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting.
engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low (sets with coolant level sensor).Indicates engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low (sets with coolant level sensor).A. Allow engine to cool down completely before proceeding with the following checks: - Check coolant level and replenish if low. - Look for possible coolant leakage points and repair as necessary. - Correct as necessary. - Contact an Onan Dealer or Distributor if none of the above. b. Check for obstructions to cooling airflow c. Check for a slipping fan belt and tighten if necessary d. Reset control and restart after locating and correcting problem.
PRE LO OIL PRESIndicates engine oil pressure is marginally low.
PRE HI ENG TEMPIndicatesengine temperature is marginally high.
LO OIL PRESIndicates engine has shut down because of critically low oil pressure.
HI ENG TEMPIndicates engine has shut down because of critically high temperature.
OVERSPEEDIndicates engine has shut down because of excessive speed.
OVERCRANKIndicates engine has shut down because of a failure to start during the cranking period.
FAULT 1An undedicated fault. May be factory programmed as a shutdown or non-shutdow.n, and as a timed or non-timed fault. (Normally set for timed shutdown).
FAULT 2Same features as Fault 1 (Normally set for timed shutdown).
LOW ENG TEMPEngine temperature is marginally low for starting. Indicates inoperative coolant heater.
LO FUELIndicates fuel supply is marginally low.
SWITCH OFFIndicates generator set is not in automatic start operation mode.
121Speed Signal Lost
135Oil Pressure Sensor High
141Oil Pressure Sensor Low
143Pre-Low Oil Pressure Sensor
144Coolant Temperature Sensor High
145Coolant Temperature Sensor Low
146Pre-High Cool Temp
151High Coolant Temp
197Low Coolant Level
234Overspeed
235Low Coolant Level
359Fail to Start
415Low Oil Pressure
441Low Battery Voltage
442High Battery Voltage
1123Shutdown After Battle Short
1124Delayed Shutdown
1131Battle Short Active
1244Engine Normal Shutdown
1311Customer Inputs #1
1312Customer Inputs #2
1317Customer Inputs #3
1318Customer Inputs #4
1334Crit Scaler OR
1335Non-Crit Scaler OR
1416Fail to Shutdown
1417Power Down Failure
1433Emergency Stop
1434Remote Emergency Stop
1435Low Coolant Temperature
1438Fail to Crank
1442Weak Battery
1443Battery Failed
1444KW Overload
1445Short Circuit
1446High AC Voltage
1447Low AC Voltage
1448Under Frequency
1449Over Frequency
1461Loss of Field
1466Modem Failure
1468Network Error
1469Speed/Hz Match
1471Over Current
1472Over Current
2335Excitation Fault

Symptoms & remedies

SymptomCauseRemedy
Status Indicators are not functioning properly.Check the status indicators for any visible damage or loose connections. If the issue persists, refer to the Fault Code Table for further troubleshooting.
Line Circuit Breaker (Optional) trips frequently.Check the circuit breaker for any visible damage or loose connections. Verify that the generator's load is within the rated capacity of the circuit breaker.
Indicates engine has begun to overheat and engine temperature has risen to approximately 220°F (105°C).A. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. Open doors or windows in generator area to increase ventilation.
Indicates engine oil pressure has dropped to 20 psi (138 kPa).If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5.
Indicates engine oil pressure has dropped to 14 psi (97 kPa).Check oil level, lines and filters. If oil system is okay but oil level is low, replenish. Reset control and restart. Contact an Onan Dealer or Distributor if oil pressure is not in the range of 35 to 55 psi (241 to 379 kPa).
OVERCRANK lamp lights and engine stops cranking.Indicates possible fuel system problem.A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section). c. Refer to Step 5. d. Reset the control and restart after correcting the problem. Contact an Onan Dealer or Distributor for service if none of the above.
Engine runs and then shuts down, OVERSPEED lamp lights.Indicates engine has exceeded normal operating speed. Contact an Onan Dealer or Distributor for service.
SWITCH OFF lamp flashes.Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. Move the Run/Stop/Remote switch to the Remote position for automatic starting.
LO FUEL lamp lights. Engine continues to run.Indicates engine has run out of fuel. Check fuel level and replenish as required.
LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights.Indicates engine has run out of fuel. Check fuel level and replenish as required.
LO ENG TEMP lamp lights. Set is in 1 I 2-Light Panel Only.Indicates engine coolant heater is not operating or is not circulating coolant. Check for the following conditions: a. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an Onan Dealer or Distributor if none of the above.
The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run.The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay.
Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits.The monitor board or a sensor may be at fault. Contact an Onan Dealer or Distributor for service.
Engine will not crank.Remote circuit breaker is tripped, Reset breaker and restart. Contact an Onan Dealer or Distributor if breaker trips after resetting.

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

Parts

137
Part #DescriptionQtySystem
102-1147Gasket, Drain - Oil Pan1Gasket PartsGeek
140-2164Nut, Square (1/4-20)1Nut PartsGeek
150-2007Guard. Belt Screw. Cap - Hex Head (1/2-13 X 2-1/4“)1Belt PartsGeek FridayParts $263.79
150-2201Sensor, Speed – Magnetic1Sensor PartsGeek
187-0001Pump, Water1Pump PartsGeek
187-0002Gasket Kit, End - Top1Gasket PartsGeek
187-0008Belt, Drive4Belt PartsGeek
187-0009Thermostat4Thermostat PartsGeek
187-0010Gasket, ThermostatThermostat PartsGeek
187-0011Filter, Fuel1Fuel filter PartsGeek
187-0012Gasket, Cover - Valve1Gasket Amazon eBay PartsGeek
187-0013Pump, Transfer - FuelPump Amazon eBay PartsGeek
187-0015Filter, Oil1Oil filter Amazon eBay $39.95 PartsGeek
187-0020Pump, Injection1Pump PartsGeek
193-0244Sender, Oil Pressure (E1)1Sensor PartsGeek
193-0353Sender, Temperature - Oil1Sensor PartsGeek
193-0375# Sender, Water Temperature1Sensor PartsGeek
2.4LEngine1Engine PartsGeek
240976Switch, high temperature 268298 Sender, temperature1Sensor PartsGeek
241481Switch, high temperature 268298 Sender, water temperature1Sensor PartsGeek
265484Line. flex. fuel, 41"2Hose PartsGeek
266110Line, flex. fuel, 50”2Hose PartsGeek
268298Sender, water temperature gauge1Sensor PartsGeek
271500Line. flex. fuel, 22”Hose PartsGeek
285498Hose, moldedHose PartsGeek
285542Gasket. manifoldGasket PartsGeek
285722Hose, upper moldedHose PartsGeek
285957Line. flex. fuelHose PartsGeek
290090Switch, low water temperature1Sensor PartsGeek
309-0269Air Cleaner (Includes Element) - Standard1Sensor PartsGeek
309-0272Air Cleaner - Heavy Duty (10" Inlet Tube)1Air filter PartsGeek
309-0553Switch, Temperature - Low Engine Coolant (S4)1Sensor PartsGeek
309-0554Switch, Oil Pressure - 20 PSI (S5 Pre-Alarm)1Sensor PartsGeek
309-0561Switch, Low Oil Pressure1Oil filter PartsGeek
332-0051Clip, Wire - Fuel Hose---—2Hose PartsGeek
353-0094-01Connector Housing and Contact Pins, 8 Pin (Less Pins)1Connector PartsGeek
405-3826-01Support, Engine - Screw, Cap - Hex Head (M12 x 1.75 x 65mm)1Support PartsGeek
503-0098Hose, Oil Drain - Bulk (3/4-Hose PartsGeek
503-0183Clamp, Hose1Hose PartsGeek
503-0365Clamp, Hose1Hose PartsGeek
503-0685Clamp, Hose2Hose PartsGeek
505-0104Element - Air Cleaner - Heavy Duty Primary [AM# CD1830610826]1Air filter PartsGeek
526-0018Gasket, Flange (1-3/4)1Gasket PartsGeek FridayParts $1002.50
750-1010Screw, Machine - Fillister Head (1/4-20 x 1")1Screw PartsGeek
821-0018Thermostat (Includes Plugs)1Thermostat PartsGeek
982-0200Air Filter6Air filter PartsGeek
A046K020Oil Filter1Oil filter PartsGeek
AN500T0083ALTERNATORAlternator PartsGeek
X-797-2Hose, flex1Hose PartsGeek
0L2090-C60 kW (2.4 L)1Service part / kit PartsGeek
102-1237Adapter, Oil Drain (Ml8 x 1/2") (S2)1Service part / kit PartsGeek
145-0596Service part / kit PartsGeek
150-2187Lever, Actuator - Governor1Service part / kit PartsGeek
150-2203Service part / kit PartsGeek
150-2218Service part / kit PartsGeek
150-2251Joint, Ball2Service part / kit PartsGeek
151-0611Control, Governor1Service part / kit PartsGeek FridayParts $249.00
151-0632Service part / kit PartsGeek FridayParts $315.00
154-2581Service part / kit PartsGeek
155-2062Service part / kit PartsGeek
155-2080Service part / kit PartsGeek
155-2175Clamp, Muffler 4"1Service part / kit PartsGeek
155-2256Service part / kit PartsGeek
155-2353Service part / kit PartsGeek
187-0004Service part / kit PartsGeek
187-0007Service part / kit PartsGeek
187-0017Service part / kit Amazon eBay PartsGeek
187-0018Service part / kit PartsGeek
187-0146Service part / kit PartsGeek
187-0198Service part / kit PartsGeek
323-1200Resistor, Fixed, Wirewound AR1Service part / kit PartsGeek
323-1304tiotming, Umector1Service part / kit PartsGeek
323-1306Screw, Cap - Hex Head (1/4-20 x 1/2")1Service part / kit PartsGeek
332-0325Service part / kit PartsGeek
332-0941*Tie, Cable2Service part / kit PartsGeek
332-1087Service part / kit PartsGeek
332-1279Insulated8Service part / kit PartsGeek
332-1445Tie, Cable 18 98-5219 1 Decal - Panel Front (Not I l l u s t r a t e d ) 19 98-5220 1 Decal3Service part / kit PartsGeek
332-2739Bracket1Service part / kit PartsGeek
332-2921Switch, Temperature - Washer, Lock (M8)1Service part / kit PartsGeek
333-0291Service part / kit PartsGeek
333-0292Service part / kit PartsGeek
353-0094Service part / kit PartsGeek
357-0030RECTIFIER ‘BATT CHARGING2Service part / kit PartsGeek
416-0446Cable, Battery (#2/0) 12-1/2" (Jumper)32Service part / kit PartsGeek
416-0893Service part / kit PartsGeek
416-0921Service part / kit PartsGeek
501-0441Line, Fuel - Flex (Fuel In)1Service part / kit PartsGeek
501-0502Line, Fuel - Flex (Fuel out)1Service part / kit PartsGeek
503-0197503-0197 Miscellaneous Engine1Service part / kit PartsGeek
504-0011Valve, Shutoff (1/2”)1Service part / kit PartsGeek
505-0026Coupling, Pipe (1/8")2Service part / kit PartsGeek
505-0050Nut, Cap - Hex Head (#10-32 x 30mm)1Service part / kit PartsGeek
505-0059Tee, Pipe (1/8") - Controls with Indicator Lights1Service part / kit PartsGeek
505-0098Band1Service part / kit PartsGeek
505-0185Ball, Fly - Governor1Service part / kit PartsGeek
505-1373Service part / kit PartsGeek
526-0008*Washer, Flat (#10)11Service part / kit PartsGeek
526-0115Washer (5/16 “)2Service part / kit PartsGeek
526-0196Washer, Spacer - Shield JC)INT, BALL LINKAGE0Service part / kit PartsGeek
526-0327Service part / kit PartsGeek
800-0012Screw, Cap - Hex Head (1/4-20 x 2-1/4”) Begin Spec C MANIFOLD KIT, INTAKE2Service part / kit PartsGeek
800-0048Screw, Cap - Hex Head (3/8-16 x 3/4”)1Service part / kit PartsGeek
800-1003Service part / kit PartsGeek
800-2060016-40820 NE 1 Screw. Cap - Hex Head (M8-1.25 x 35MM) 3 856-00080Service part / kit PartsGeek
800-2110Hood, Inlet - Air Molded1Service part / kit PartsGeek
800-2112Screw. Cap - Hex Head (M12 x 30nin)2Service part / kit PartsGeek
812-007533?-27395Service part / kit PartsGeek
813-0103Screw, Machine - Round Head (#10-32 x 3/4º)1Service part / kit PartsGeek
815-0172Cover, Adapter Outlet1Service part / kit PartsGeek
850-0025*Washer, Lock - Spring (#8)1Service part / kit PartsGeek
850-0030Washer, Lock - Spring (#10)1Service part / kit PartsGeek
850-0050Washer, Lock - Spring (3/8”)4Service part / kit PartsGeek
850-2006Washer, Lock - Spring (M6)1Service part / kit PartsGeek
850-2008Heater, Engine Coolant1Service part / kit PartsGeek
850-2012Washer, Lock - Spring (M12)16Service part / kit PartsGeek
856-0013Washer1Service part / kit PartsGeek
860-2007Screw, Machine - Round Head (M10 x 32 x 3/4")1Service part / kit PartsGeek
870-0053(350-00301Service part / kit PartsGeek
870-0131*Nut, Hex - w/ET (#10-32) *Breaker, Circuit 60 Hertz1Service part / kit PartsGeek
870-0212Nut, Locking (1/4-20)4Service part / kit PartsGeek
871-0010#Nut2Service part / kit PartsGeek
871-0028Service part / kit PartsGeek
928-0502BService part / kit PartsGeek
928-0506Service part / kit PartsGeek
960-0135Service part / kit PartsGeek
960-0136Battery, 24V, 55Ah, AGM8Service part / kit PartsGeek
960-0242Service part / kit PartsGeek
960-0504AService part / kit PartsGeek
960-0505Service part / kit PartsGeek
960-12Service part / kit PartsGeek
965-0520Cooling Fan37Service part / kit PartsGeek
A-290538Block heaterService part / kit PartsGeek
A-290885Heater, block (240V)Service part / kit PartsGeek
K19-CP460 kWe1Service part / kit PartsGeek
K38-CP920 kWe1Service part / kit PartsGeek
K50-CP1240 kWe1Service part / kit PartsGeek

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

RatingLoadL/hgal/h
Prime
Standby

Available documents

Spec sheet — 4BT3.9 (Cummins/Onan)Spec sheet — cummins-DGCB-spec-sheet (Cummins/Onan)Spec sheet — s-1283 (Cummins/Onan)Spec sheet — s-1283b (Cummins/Onan)Spec sheet — s-1408 (Cummins/Onan)Spec sheet — s-1451 (Cummins/Onan)Operator's manual — 960-0107 Cummins DGBB DGCB DGDB DGFA Operator's Manual (7-2009) (Cummins/Onan)Operator's manual — Cummins-DGBB-DGBC-DGCA-DGCB-DGCG-DGFA-DGFB-DGFC-DGFS-operator-manual (Cummins/Onan)Parts manual — 0932-0112 Onan Post-Sale Literature Index (07-1998) (Cummins/Onan)Parts manual — 0960-0242 I1 198805 (Cummins/Onan)Parts manual — 0960-0291 I7 201305 (Cummins/Onan)Parts manual — 960-0231 Onan DGB DGC Parts Manual (6-1993) (Cummins/Onan)Parts manual — 960-0242 Onan DGCA DGCB Parts Manual (5-1988) (Cummins/Onan)Service manual — 0960-0210 I8 201512 (Cummins/Onan)Service manual — 900-0907 Cummins DGxx Series Repair Times (Cummins/Onan)Service manual — 960-0505 Onan DGxx QSxx Detector Controls Generator Set Service Manual (04-2001) (Cummins/Onan)Service manual — 960-0510B Onan DGBB thru DGFC Series Service Manual (10-1998) (Cummins/Onan)Service manual — 960-0511B Cummins DGBB DGC DGD DGF Series Service Manual (10-2001) (Cummins/Onan)Service manual — 960-0518D Cummins DGBB DGC DGDA DGFB Series Service Manual (2-2004) (Cummins/Onan)Service manual — 960-0615C Cummins DGBB DGC DGFA Series Operator's Manual (10-2003) (Cummins/Onan)Service manual — 960-0618D Cummins DGBB DGCA DGEA DGFA Series Installation Manual (10-2001) (Cummins/Onan)Service manual — 960-0628D Cummins DGB DGC DGF Series Installation Manual (2-2004) (Cummins/Onan)Service manual — DG Generator Set Service Manual PCC 3100 (Cummins/Onan)