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Cummins/Onan DFCB Generator Set

The Cummins/Onan DFCB is a Diesel generator set powered by a Cummins/Onan NTA855G2 engine. It is available at 300 V, 60 Hz. It holds about 40 L (10.6 gal) of oil and 64.4 L (17.0 gal) of coolant. Starting uses 2 group-8 batteries rated 975 CCA at 12 V. An integrated tank holds 42 L (11.1 gal).

14.0 L
Displacement
40.0 L
Oil capacity
4
Document types

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

Specifications

FuelDiesel
Frequency60.0 Hz
ControllerPowerCommand 3100, PowerCommand 3100 (PCC)
Oil capacity40.0 L
Voltage options300 V
Battery group8D
Battery cranking975 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity64.4 L
Fuel tank42.0 L

Engine

Cummins/Onan NTA855G2
Oil capacity38.6 L
Coolant capacity79.8 L
Displacement14.0 L
AspirationTurbo Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan NTA855G2
ItemSpecCapacityPart #Interval
Air filter— find
Fuel filterM-1398-1500 hr buy
Oil filterLS-1096250 hr buy
Belt—100 hr find
Coolant—
Coolant filter—250 hr find
Oil38.6—500 hr

Common questions

What engine does the Cummins/Onan DFCB use?

The Cummins/Onan DFCB is powered by the Cummins/Onan NTA855G2 engine.

What fuel does the Cummins/Onan DFCB use?

The Cummins/Onan DFCB runs on Diesel.

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

The Cummins/Onan NTA855G2 engine in the Cummins/Onan DFCB has an oil capacity of 38.6 liters.

Parts

40
Part #DescriptionQtySystem
102-1335Plug, Oil Drain1Plug buy
193-0432Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan)2Sensor buy
307-2621-02Relay, Start Solenoid (K4)1Relay buy
309-0269Switch, Temperature - Low Engine Temperature (S4)1Switch ironwing $32.86
319-2236Bracket, Mounting1Bracket buy
504-0011Valve, Shutoff (1/2”)1Valve buy
505-0019Bushing, Pipe - Reducer 1/2” to 3/8”, DFBF (1/2” to 3/8”) 505-0131 DFCB, DFCC, DFCE (3/4” to 3/8”)1Bushing buy
505-0100Nipple, Pipe - Close (1/2”)1Nipple buy
508-0292Washer, Sealing - Copper1Washer buy
518-0548-58Clamp, Hose3Clamp buy
526-0029Washer, Flat (3/8)1Washer buy
526-0219Washer, Flat (1/2)2Washer buy
800-0048Screw, Cap - Hex Head (3/8-16 x 3/4”)1Screw buy
800-0092Screw, Cap - Hex Head (1/2-13 x 1.5)2Screw buy
850-0050Washer, Lock - Spring (3/8”)4Washer buy
870-0212Nut, Locking (1/4-20)4Nut buy
960-0504PCC Control Service Manual*Service manual buy
960-0507Detector Control Service Manual**Service manual buy
B-342-10CRANKCASE BREATHERBreather buy
CS-1075-1WATER TEMPERATURE STRAINER CONTROL VALVETemperature control valve buy
CS-1130-1EXPANSION TANK CAPExpansion tank cap buy
CS-1167TYPICAL COOLANT HEATERHeater buy
CS-1198COOLANT FILTERCoolant filter buy
ES-1779-1VOLTAGE REGULATOR AND EXCITATION SWITCHExcitation switch buy
FS-1424FUEL FILTERS1Fuel filter buy
LF3000Lube, Spin-On1Oil filter Amazon eBay $104.99
LS-1096OIL FILTEROil filter buy
M-1298CHECK OIL LEVEL (ON RIGHT SIDE OF ENGINE)Oil filter buy
M-1398STANDARD AIR CLEANER1Air filter dieselpartscenter $15.50
M-1398-1SYSTEM CHECKSSystem check buy
M-1398-2HEAVY DUTY AIR CLEANER (OPTIONAL)1Air filter buy
M-1739CYLINDER BLOCK RADIATOR DRAINCOCK AND OIL COOLER AND LOWER RADIATOR HOSE M-17391Hose atldiesel $51.64
M-1740SUPPLY LINE, FILTER TO INJECTION PUMP FS-14241Fuel pump dieselpartscenter $25.93
PCC-3100LABEL1Label yemparts $665.05
SC-1609PERMISSIVE START SWITCHSwitch buy
SC-1610AUTO START SWITCSwitch buy
960-0138Service part / kit buy
960-0606Service part / kit buy
ES-1779VOLTAGE REGULATORService part / kit buy
S-1610VOLTAGE SELECTOR LIGHTSService part / kit yemparts $223.16

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.

Fuel consumption

RatingLoadL/hgal/h
Prime
Standby
Standby100%77.320.4

Available documents

Operator's manualReferenceParts manualService manual