Cummins/Onan DGFB — Specs, Engine, Parts & Maintenance

Service parts for the DGFB

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required

AF4669Air filter$225.00eBay

Fuel system

1 required

3843760Fuel filter$74.95eBay

Oil system

2 required

LS1174sOil filtersee priceAmazon

3377363Oilsee priceAmazon

Belts

1 required

3911562Belt$26.05eBay

Electrical

1 required

B-45Batterysee priceAmazon

Prices 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	175 kW
Standby kVA	219
Prime power	160 kW
Emissions	EPA Nonroad Tier 1
Controller	Detector 7, PCC2100, PowerCommand 2100, PowerCommand PCC 3100, PowerCommand PCC2100
Oil capacity	19.0 L
Voltage options	110/190 V, 120/208 V, 220/380 V, 240/416 V, 139/240 V, 277/480 V, 347/600 V, 120/240 V
Phase	3
Power factor	0.8
Battery group	4D
Battery cranking	1080 CCA
Battery voltage	12 Volts DC V
Battery quantity	1
Coolant capacity	28.0 L
Max ambient	40 °C
Wet weight	1520 kg
Fuel tank	24.8 L

Engine

Cummins/Onan 6CTA8.3

Oil capacity	19.0 L
Coolant capacity	28.0 L
Displacement	8.3 L
Aspiration	Turbocharged

Filters for the Cummins/Onan 6CTA8.3

Engine-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
Oil filter	P553000	Lube Filter, Spin-On Full Flow	CUMMINS 3318853, CUMMINS 3825970, NAPA 1748, NAPA 1748XD	FridayParts $125.00
Oil filter	P553548	Lube Filter, Spin-On Combination	CUMMINS 3919562, CUMMINS 3973686, BALDWIN BD324, LOESING 025227	KuduParts $48.00 FridayParts $49.99
Fuel filter	P550440	Fuel Filter, Spin-On Secondary	CUMMINS 3831063, CUMMINS 3890707, NAPA 3358, BALDWIN BF788	FridayParts $356.80
Fuel filter	P550974	Fuel Filter, In-Line	CUMMINS 3826094, NAPA 3270, BLAW KNOX 0016481600, PERKINS 102601	FridayParts $356.80
Fuel / water separator	P551329	Fuel Filter, Water Separator Spin-On Twist&Drain	CUMMINS 11E170210, CUMMINS 3890063, NAPA 3357, BALDWIN BF1280	FridayParts $151.00
Fuel / water separator	P558000	Fuel Filter, Water Separator Spin-On Twist&Drain	CUMMINS 3308638, CUMMINS 3308683, NAPA 3405, NAPA 3693	KuduParts $24.00 FridayParts $25.66
Coolant filter	P554071	Coolant Filter, Spin-On	CUMMINS 209604, CUMMINS 209606, NAPA 4071, WALGAHN-MOTORENTECHN 00811412	FridayParts $397.60
Coolant filter	P552072	Coolant Filter, Spin-On Sca Plus	CUMMINS 3100305, CUMMINS 3300900, NAPA 4072, IMPERIAL 04WF2072	buy

Maintenance & consumables

for the Cummins/Onan 6CTA8.3

Item	Spec	Capacity	Part #	Interval
Air filter			AF4669		Amazon eBay $225.00
Fuel filter			3843760		Amazon eBay $74.95
Oil filter	LS1174s		LS1174s	250 hr	Amazon eBay
Battery	B-45		B-45	50 hr	Amazon SinoCMP $1269.00
Belt			3911562		Amazon eBay $26.05
Coolant		36.0	—	100 hr
Oil	Cummins Premium Blue 15W40	6.0 gal	3377363		Amazon eBay
Spark plug			—	1000 hr

Service intervals

Item	Action	Hours	Months	Notes
Charge air piping	Check	50 hr		Daily or after 8 hours
Check Coolant Level	Check	8 hr		Daily
Check Fuel Level	Check	8 hr		Daily
Check Oil Level	Check	8 hr		Daily
Coolant level	Check	8 hr		Daily or after 8 hours
Drain Water from Fuel Filter	Drain	8 hr		Daily; drain 1 cup or more of fuel to remove water and sediment.
Engine oil level	Check	8 hr		Daily or after 8 hours
Fuel Filter(s)	Drain	8 hr		Drain 1 cup or more of fuel to remove water and sediment. Refer to engine operation and maintenance manual for procedure.
Fuel Tanks (water and sediment)	Drain	8 hr		Drain 1 cup or more of fuel to remove water and sediment.
Fuel level	Check	8 hr		Daily or after 8 hours
General genset inspection	Inspect	8 hr		Daily or after 8 hours. Check for oil, fuel, cooling and exhaust system leaks; check exhaust audibly and visually with set running.
Inspect Genset	Check	8 hr		Check for oil, fuel, cooling and exhaust system leaks. Check exhaust system audibly and visually with set running and repair any leaks immediately.
Inspect Set	Inspect	8 hr		Daily; check for oil, fuel, cooling, and exhaust system leaks.
Oil Level	Check	8 hr		Keep oil level near the dipstick high mark without overfilling.
Air Cleaner	Clean	50 hr		Clean if required. Perform more often in dusty conditions.
Air cleaner (clean if required)	Clean	50 hr		Weekly or after 50 hours; perform more often in dusty conditions
Battery charging system	Check	50 hr		Weekly or after 50 hours
Check Anti-freeze and DCA Concentration	Check	50 hr		Weekly
Check Battery Charging System	Check	50 hr		Weekly
Check Battery Level and Specific Gravity	Check	50 hr		Weekly
Check Coolant Heater	Check	50 hr		Weekly
Check Drive Belt Tension	Check	50 hr		Weekly; visually check belts for evidence of slippage.
Check Generator Air Outlet	Check	50 hr		Weekly
Coolant heater	Check	50 hr		Weekly or after 50 hours
Crankcase Oil	Drain	50 hr		First service — Break-in: drain and replace the crankcase oil after the first 50 hours of operation on new generator sets.
Crankcase oil	Change	50 hr		First service — Drain and replace after first 50 hours of operation on new generator sets.
Drain Exhaust Condensate Trap	Drain	50 hr		Weekly
Drain Water and Sediment from Fuel Tanks	Drain	50 hr		Weekly; drain 1 cup or more.
Exhaust condensate trap	Drain	50 hr		Weekly or after 50 hours
Water and sediment from fuel tank	Drain	50 hr		Weekly or after 50 hours; drain 1 cup or more of fuel to remove water and sediment
Check Air Cleaner (clean if required)	Check	100 hr		Monthly; clean if required; perform more often in extremely dusty conditions.
Clean Generator Assembly	Clean	100 hr		Monthly
Radiator hoses for wear and cracks	Inspect	100 hr		Monthly or after 100 hours
Starting batteries	Check	100 hr		Monthly or after 100 hours
Battery electrolyte level	Check	200 hr		Check at least every 200 hours of operation
Anti-freeze and DCA Concentration	Check	250 hr	3 mo	Refer to engine operation and maintenance manual.
Crankcase oil and filter	Change	250 hr	12 mo	Refer to Cummins Engine Operation and Maintenance Manual. Standby applications: change every 12 months or 250 hours, whichever comes first.
Drive Belt Tension	Check	250 hr	3 mo	Visually check belt for evidence of wear or slippage. Replace if hard or brittle. Refer to engine operation and maintenance manual.
Fuel Filters	Change	250 hr	3 mo	Refer to engine operation and maintenance manual.
Governor Adjustment	Check	250 hr	3 mo

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

Type	Item	Value	Unit	Condition
Clearance	Overspeed switch magnet-to-fly arm air gap (minimum)	0.005	inches (0.13 mm)
Gap	Mechanical overspeed switch air gap between magnet and fly arm (replace switch if less)	0.005	inches (0.13 mm)
Other	AVR DROOP preset at factory	five percent droop at full load and zero power factor
Other	Battery electrolyte corrected specific gravity (fully charged)	1.260		electrolyte temperature corrected
Other	Battery electrolyte specific gravity, fully charged (corrected)	1.260		corrected to 80 °F (27 °C)
Other	Battery recharge threshold specific gravity	1.215
Other	Battery specific gravity	1.260		at 77°F (25°C)
Other	Battery specific gravity temperature correction	four gravity points (0.004) for every ten degrees above 80 F (27 C)
Other	Battery specific gravity, fully charged	approximately 1.260	at 80°F (27°C)
Other	Coolant level	50	mm	below radiator cap opening
Other	Cycle cranking (12-lamp control)	3 cycles of 15 seconds
Other	ECM fuse F1 (starter solenoid circuit)	20	amps
Other	ECM fuse F2 (fuel solenoid circuit)	20	amps
Other	ECM fuse F3 (continuous B+ to remote circuits)	15	amps
Other	ECM fuse F4 (ECM circuits)	5	amps
Other	ECM fuse F5 (engine gauge circuits)	5	amps
Other	Governor droop adjustment range	within 5	percent of nominal frequency (3 Hz for 60Hz sets, 2.5 Hz for 50Hz sets)
Other	Low oil pressure / high engine temperature fault time delay	about 10	seconds	following starter disconnect and inhibited during cranking
Other	Overcrank limit (Sentinel)	60	seconds
Other	Overcrank option limit (Detector)	75	seconds
Other	Overcrank time limit	75	seconds
Other	Overspeed warning range 60 Hz sets	2000 to 2200	RPM
Other	Random voltage variation	±1	%	for constant loads
Other	Response jumper setting - 90 to 550 kW	B to C
Other	Response jumper setting - over 550 kW	A to B
Other	Response jumper setting - under 90 kW	A to C
Other	Standard cycle cranking (Detector)	three 15-second cranking cycles with two 15-second rest periods
Other	Starter disconnect speed	450 to 570	RPM
Other	Trailer brake shoe adjustment back-off	10	clicks
Other	Trailer surge brake actuator stroke length (service brakes if exceeds)	1	inch (25 mm)
Other	Under-frequency roll-off (UFRO) threshold, 50 Hz applications	49	Hz
Other	Under-frequency roll-off (UFRO) threshold, 60 Hz applications	59	Hz
Other	Voltage regulation	±2	%	from no load to full load
Pressure	Engine oil pressure (normal)	30 to 65	psi (207 to 449 kPa)	at normal operating temperature
Pressure	Engine oil pressure range (low oil pressure troubleshooting)	25 to 65	psi (172 to 449 kPa)
Pressure	Idle Oil Pressure	10-30	psi	idle
Pressure	Idle Oil Pressure Shutdown Limit	8	psi	idle
Pressure	Idle Oil Pressure Warning Limit	12	psi	idle
Pressure	Idle oil pressure	69-207	kPa	idle
Pressure	Idle oil pressure shutdown limit	55	kPa	idle
Pressure	Idle oil pressure warning limit	83	kPa	idle
Pressure	Low Oil Pressure shutdown threshold	14	psi (97 kPa)
Pressure	Low Oil Pressure shutdown threshold (less than)	14	psi
Pressure	Low oil pressure cutout switch test threshold (service lubricating system if less)	10	psi	while cranking
Pressure	Low oil pressure shutdown	14	psi
Pressure	Low oil pressure shutdown	97	kPA
Pressure	Low oil pressure shutdown limit	14	psi (97 kPa)
Pressure	Max. Allowable Exhaust Back Pressure	41	in. H2O
Pressure	Max. Fuel Inlet Restriction	4	in. Hg (13.5 kPa)
Pressure	Max. Fuel Return Restriction	10	in. Hg (33.8 kPa)
Pressure	Max. Fuel Return Restriction	20	in. Hg (67.6 kPa)
Pressure	Normal Oil Pressure	40-70	psi	normal
Pressure	Normal oil pressure	276-483	kPa
Pressure	Normal oil pressure range	172 to 275	kPa
Pressure	Normal oil pressure range	25 to 40	psi
Pressure	Oil Pressure Shutdown Limit	15	psi	normal
Pressure	Oil Pressure Warning Limit	20	psi	normal
Pressure	Oil pressure shutdown limit	103	kPa
Pressure	Oil pressure warning limit	138	kPa
Pressure	Pre Low Oil Pressure warning threshold (less than)	20	psi

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	Notes
Coolant		Refer to Cummins engine Operation and Maintenance Manual for coolant recommendations/specifications		Balanced coolant mixture of water, antifreeze and coolant additives.
Coolant	50/50 mix of water and antifreeze	Balanced coolant mixture of water, antifreeze and coolant additives		Drain and replace the mixture every 6 months or after 500 hours of operation. Do not add cold coolant to a hot engine; allow engine to cool below 120 F (50 C) before adding coolant.
Engine oil		Refer to Cummins engine Operation and Maintenance Manual for lubricating oil classification		Gensets are shipped with oil added.
Engine oil	SAE 5W synthetic	API CC/CD; sulphated ash max 1.85%; pour point 9°F (5°C) below lowest expected temperature; viscosity max 10,000 mPa·s at -31°F (-35°C) and min 4.1 mm²/s at 212°F (100°C)	below -23°C	For ambient consistently below -10°F (-23°C) and no engine warm-up provision
Engine oil	10W-30	API CC/CD	-23°C to -10°C	For ambient -10°F (-23°C) to 14°F (-10°C)
Engine oil	15W-40	API CC/CD	above -10°C	For ambient 14°F (-10°C) and above
Engine oil	20W-40	API CC/CD	above 0°C	For ambient 32°F (0°C) and above
Fuel	Diesel			Do not use zinc coated or copper fuel lines with diesel fuel.
Fuel	No. 2 diesel			Engine primarily designed for No. 2 diesel; No. 1 fuel or similar acceptable if meets specifications
Fuel	diesel			Do not use zinc coated or copper fuel lines with diesel fuel.
Hydraulic oil	DOT-3			Trailer master cylinder reservoir - keep at least half full

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

Code	Name	Meaning	Severity	Action
1122	Rated/Idle Trans		Info
1123	Shutdown After Battle Short	A shutdown fault occurred while Battle Short was enabled and transitioned from enabled to disabled.	Shutdown	Review Fault History and perform corrective action.
1124	Delayed Shutdown	A shutdown fault became active while the Delayed Shutdown feature was enabled.	Warning	Review Fault History and perform corrective action.
1131	Battle Sh Active	Control is in Battle Short mode (bypasses several critical fault shutdowns).	Warning	None; used for genset operation during emergencies.
121	Speed Signal Lost	Mag pickup speed indication is not being sensed.	Shutdown	Restart and check RPM on digital display; inspect MPU wires/connector pins; check for 3.5 to 15 VAC at MPU while cranking.
1311	Customer Input #1		Warning	Optional customer selection (e.g., Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure). Programmable: enable/disable, status/warning/shutdown, active closed or open, and display name.
1311, 1312, 1317, 1318	CUSTOMER INPUT #1 - #4	Optional customer-selected fault input is active.		Disconnect signal lead from TB1 and reset the control; check external wiring/active input selection.
1312	Customer Input #2		Warning	Optional customer selection; programmable (enable/disable, status/warning/shutdown, active open/closed, display name). Default #2 thru #4 - Warning.
1317	Customer Input #3		Warning	Optional customer selection; programmable (default #3 - Low Fuel).
1318	Customer Input #4		Warning	Optional customer selection; programmable (default #4 - Rupture Basin Fault).
1334	Crit Scaler Out Of Range	Incorrect feature or calibration was entered into control.	Shutdown	Reload correct feature/calibration file.
1335	Noncrit Scaler Out Of Range	Incorrect feature or calibration was entered into control.	Warning	Reload correct feature/calibration file.
1337	No Message		Info
135	Oil Pressure Sensor H	Engine oil pressure sender signal is shorted high.	Warning	Check sender/connectors/wires; verify fault simulation not enabled; check 0.5 to 4.5 VDC at P7-13 (OP OUT) and P7-17 (OP COM).
141	Oil Pressure Sensor L	Engine oil pressure sender signal is shorted low.	Warning	Check sender/connectors/wires; check for shorts/open circuits at P7-13, 17, 21.
1416	Fail To Shutdown	Genset continues to run after receiving shutdown command (Battle Short feature enabled).	Warning	Check Battle Short feature setting.
1417	Powr Down Error	Controller cannot power down because of an unknown condition.	Warning	Indicates controller cannot power down because of unknown condition. Possible drain on battery. Contact an authorized service center for service.
143	Pre-Low Oil Pres	Engine oil pressure dropped to an unacceptable level.	Warning	Indicates engine oil pressure has dropped below the warning trip point. If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow code 415 procedure.
1433	Emergency Stop	Local Emergency Stop.	Shutdown	Pull the button out; move switch to O; press Fault Acknowledge/Reset; select Manual or Auto.
1434	Remote E-Stop	Remote Emergency Stop.	Shutdown	See code 1433 to reset.
1435	Low Coolant Temp	Engine coolant heater is not operating or not circulating coolant (coolant <=70 F [21 C]).	Warning	Indicates engine coolant heater is not operating or is not circulating coolant. Check coolant heater power supply for blown fuse or disconnected cord; check for low coolant level and replenish; look for coolant leaks and repair.
1438	Fail To Crank	Engine failed to crank after the PCC received a start signal.	Shutdown	Test for B+ at the starter; check fuse F3 (2 Amps); check K4 start pilot relay and starter circuitry; refer to code 121.
144	Coolant Sensor High	Engine coolant temperature signal is shorted high.	Warning	Check sender/connectors/wires; check resistance between P7-30 (IH20) and P7-34 (IH20 COM).
1442	Weak Battery	During cranking battery voltage at or below weak battery trip point.	Warning	Recharge or replace battery; check electrolyte level and connections; check harness.
1443	Battery Failed	Dead battery - engine will not start.	Shutdown	See code 1438 instructions.
1444	KW Overload	Generator output power exceeded 105% of genset rating (3 sec at 110% of rated).	Warning	Check load and load lead connections; check CTs and CT connections.
1445	Short Circuit	Generator output current exceeded 175% of rated.	Shutdown	Check load and load lead connections (fault may not reset for several minutes).
1446	High AC Voltage	Phase voltage exceeded 130% of nominal, or 110% of nominal for 10 seconds.	Shutdown	Check fault simulation; clear fault and restart; refer to Generator/Base Board Isolation Procedure.
1447	Low AC Voltage	Phase voltage dropped below 85% of nominal for 10 seconds.	Shutdown	Check load; reconnect per reconnection diagram; check PMG/field wiring; check P8-21/P8-22 shunt connections.
1448	Under Frequency	Engine speed dropped below 90% of nominal for 10 seconds.	Shutdown	Check fuel supply, intake air supply and load; check P8 connections.
1449	Over Frequency	Frequency is 10% above base frequency for 20 seconds.	Warning	Check fuel or air delivery problem; repair P7/P8 connections.
145	Coolant Sensor Low	Engine coolant temperature signal is shorted low.	Warning	Check sender/connectors/wires; check for shorts at P7-30 and P7-34.
1452	Gen CB Not Close	Genset circuit breaker (S2) failed to close when PTC enabled.	Warning	Refer to Section 5.
1453	Gen CB Not Open	Genset circuit breaker (S2) failed to open when PTC enabled.	Warning	Refer to Section 5.
1459	Reverse Power	Improper CT phasing.	Shutdown	Check wiring to voltage sense circuit; refer to CT Installation in Section 6.
146	Pre-High Coolant Temp	Engine has begun to overheat (coolant temperature risen to an unacceptable level).	Warning	Reduce load; check air inlets/outlets and remove obstructions to airflow; if engine can be stopped follow code 151.
1461	Loss Of Field	Loss of field (electric) due to reverse kVAR.	Shutdown	Check field circuit.
1466	Modem Failure	Control cannot communicate with the modem.	Warning	Check for open, short circuit to ground, and loose connections to the modem.
1468	Network Error	Momentary loss of communication from the LonWorks Network.	Warning	Refer to the LonWorks Network publications.
1469	Speed/Hz Match	Measured speed and measured AC output frequency do not agree.	Shutdown	Check calibration file.
1471	Over Current	Generator output current exceeded 110% of rated for 60 seconds.	Warning	Check load and load lead connections.
1472	Over Current	Generator output current exceeded 110% of rated; time/current calculation initiated shutdown.	Shutdown	Check load and load lead connections (fault may not reset for several minutes).
151	High Coolant Temp	Engine has overheated (coolant temperature above the shutdown trip point).	Shutdown	Engine has overheated. Allow engine to cool completely, then: check coolant level and replenish and repair leaks; check for obstructions to cooling airflow; check fan belt and repair or tighten; check blower fan and circulation pumps on remote radiator installations; reset control and restart.
197	Low Coolant Level	Engine coolant level has fallen below the warning trip point.	Warning	Indicates engine coolant level has fallen below warning trip point. If generator is powering critical loads and cannot be shut down, wait until next shutdown period, then follow code 235 procedure. If engine can be stopped, follow code 235 procedure.
212	Oil Temp Sensor H	Engine oil temperature signal is shorted high.	Warning	Check sender/connectors/wires; check resistance between P7-22 (OIL TEMP) and P7-26 (OIL TEMP COM).
213	Oil Temp Sensor L	Engine oil temperature signal is shorted low.	Warning	Check sender/connectors/wires; check shorts and resistance between P7-22 and P7-26.
2327	PTC Fault	PTC module or communication link not working properly when PTC enabled.	Warning	Check blinking light on PTC module; check B+ TB3-3 to TB3-4; check PTC status voltage TB3-5 to TB3-6 (~0.2 VDC); repower control.
2329	Low S1 Frequency	Low utility (S1) frequency.	Warning	Check S1 AC inputs and wiring to PTC at TB5; check sensor set points.
2331	Low S1 Voltage	Low utility (S1) voltage.	Warning	Repower PCC 2100 control to clear; check S1 AC inputs at TB5; check S1 pickup/dropout set points.
2335	Excitation Fault	Loss of all three voltage sense leads or failure in excitation circuit.	Shutdown	Check field wiring (X1 and X2) for shorts or opens.
2336	Memory Error	Control memory error; data corruption of critical operating parameters.	Shutdown	Try reloading calibration file.
2337	Pwr Tran Disabled	PTC module available but PTC feature not enabled.	Warning	Use InPower to enable PTC feature; cycle power off for 5 seconds then repower.
2338	Pwr Tran Failure	PTC module trim enabled but control could not communicate with PTC module.	Warning	Check blinking light and B+ TB3-3 to TB3-4; check connections between TB2 and TB3; cycle power.
2339	Pwr Down Enabled	Power Down (sleep) function enabled but PTC module or network board is active.	Warning	None required.
234	Overspeed	Engine has exceeded normal operating speed.	Shutdown	Clear fault and restart genset; check fault threshold; monitor RPM; check electronic governor actuator.
2341	High Control Temp	Control temperature above normal (158 F [70 C]) for time greater than set time.	Warning	Check genset room air flow.
2342	Too Long In Idle (10 min.)	Genset has been in Idle mode too long.	Warning	Indicates genset has been in Idle mode too long (10 minutes maximum).
235	Low Coolant Level	Engine coolant level has fallen below the shutdown trip point.	Shutdown	Coolant level has fallen below the shutdown trip point. Allow engine to cool completely, then check coolant level and replenish, look for possible coolant leakage points and repair; reset control and restart.
2358	High S1 Voltage	Utility (S1) voltage increased above over voltage threshold.	Warning	Measure S1 AC inputs at PTC module; check utility nominal voltage; check sensor set points.
2396	S1 CB Not Close	Utility contact (S1) failed to close with PTC enabled.	Warning	Refer to Section 5.
2397	S1 CB Not Open	Utility contact (S1) failed to open with PTC enabled.	Warning	Refer to Section 5.
2966	PTC Timeout	PTC module is not responding; no longer communicating (PTC status may be okay).	Warning	Check PTC status light; check cable connections between PTC module and control; cycle power.
2967	Governor Fault	Governor hardware drive circuitry contains a fault condition.	Warning	Check governor hardware drive circuitry.
2968	AVR Fault	AVR hardware contains a fault condition.	Warning	Check AVR hardware.
2969	LON Failure	No communications with LonWorks board.	Warning	Check communications with LonWorks board.
2971		No message (PTC Test Mode Active).	Info	None required; fault code only displayed in InPower.
2972	Field Overload	AVR Field has been at Max Field for a time greater than the allowed Max Field Time.	Shutdown	Check field load.
359	Fail To Start	Engine cranks but fails to start (possible fuel system problem).	Shutdown	Possible fuel system problem (engine cranks but fails to start). Check for empty fuel tank, fuel leaks, or plugged fuel lines; check for dirty fuel filter and replace if necessary; check for dirty or plugged air filter and replace if necessary; reset the control and restart.
415	Low Oil Pressure	Engine oil pressure has dropped below the shutdown trip point.	Shutdown	Indicates engine oil pressure has dropped below shutdown trip point. Check oil level. If oil level is low, replenish. Reset control and restart.
421	Oil Temp	Engine has begun to overheat (oil temperature above unacceptable level) (Optional).	Warning	Reduce load; check air inlets/outlets; if engine can be stopped follow code 151 and check engine oil level.
441	Low Bat Voltage	Battery voltage supply to the control approaching a low level.	Warning	Indicates battery voltage supply to control is approaching a low level. Check battery charger fuse. Recharge or replace battery. Clean battery cable terminals and tighten all connections. Check battery charge voltage float level if applicable.
442	High Bat Voltage	Battery voltage supply approaching a high level at which control damage can occur.	Warning	Indicates battery voltage supply to control is approaching a high level. Check float level on battery charger if applicable (lower float level).
BASIN	Day tank BASIN lamp	Fuel has overflowed into the rupture basin, indicating possible failure of pump-off and hi-fuel float switches or a leak in the day tank	Warning	RESET the control after fuel in the basin is safely disposed of and cause of overflow corrected
BLANK	Blank lamp	For customer use
F1	ECM fuse F1	Starter solenoid circuit, 20 amps		Replace with a fuse of the same type and amp rating
F2	ECM fuse F2	Fuel solenoid (switched B+) circuits, 20 amps		Replace with a fuse of the same type and amp rating
F3	ECM fuse F3	Continuous B+ out to remote circuits, 15 amps		Replace with a fuse of the same type and amp rating
F4	ECM fuse F4	ECM circuits, 5 amps		Replace with a fuse of the same type and amp rating
F5	ECM fuse F5	Engine gauge circuits, 5 amps		Replace with a fuse of the same type and amp rating
Fault 1 (Red)	Fault 1 (Detector-12)	Engine shut down because of a system fault; part of a 10 second time delay shutdown circuit (customer connections)	Shutdown	Service as required; selection jumpers may choose warning only or non-timed shutdown

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

Procedures

Adjusting Values/Parameters adjustment

⚠ If Home button or Previous Main Menu button is pressed before pressing save symbol, changes are not saved.

Press button next to symbol in display until + and − symbols are displayed.
Press button next to arrow symbols to move to numeric character to change.
Press button next to + symbol to increase value or select parameter.
Press button next to − symbol to decrease value or select parameter.
After adjusting values/selecting parameters, press symbol to save changes.

Dip Adjustment adjustment

Turn the DIP pot clockwise to increase the voltage vs frequency slope for frequencies below the UFRO threshold.
Greater slope gives greater voltage roll off as frequency drops, easing large load pickup but increasing voltage dip.
Turn the pot fully counterclockwise to make the slope the same above and below the threshold frequency.

Dwell Adjustment adjustment

Turn the DWELL pot clockwise to increase dwell time (voltage recovery time when frequency dips below threshold).
Turn the DWELL pot fully counterclockwise to eliminate dwell.
With no dwell, voltage recovery follows engine speed recovery.

Fuel Pump Control: Convert 120 VAC to 240 VAC adjustment

Remove jumpers between TB1-5/TB1-6 and TB1-7/TB1-8; connect two jumpers between TB1-6 and TB1-7.
Move selector switch S103 on control PCB to down position for 240 VAC.
If equipped with a transformer, remove jumpers between H1/H3 and H2/H4 and connect two jumpers between H2 and H3.
Attach a tag to the control box indicating the supply voltage.

Fuel Pump Control: Convert 240 VAC to 120 VAC adjustment

Remove jumpers between TB1-6/TB1-7; connect one jumper TB1-5 to TB1-6 and one TB1-7 to TB1-8.
Move selector switch S103 on control PCB to up position for 120V.
If equipped with a transformer, remove jumpers between H2/H3 and connect one between H1-H3 and one between H2-H4.

Governor Adjustments (Type A Electric Governor) adjustment

Set selector switch S1 to OFF, S2 to appropriate model position.
Set pots initially: Gain 20%, I 20%, D 30%, Droop 0%.
Start set, adjust Speed pot for required frequency (60Hz=1800RPM or 50Hz=1500RPM) at operating temperature.
Disconnect load, turn Gain pot to 100% or until unstable, then back off until stable.
Adjust D and I pots similarly; readjust Speed if necessary.
Push throttle to minimum speed, release and observe overshoot (2-5 Hz acceptable); adjust I pot to reduce overshoot or hunting.

Over / Under Voltage Module Recalibration adjustment

Remove the two screws securing the top to the case and withdraw the top assembly.
Adjust the UNDER setpoint SET pot to 75 percent.
Apply single-phase, 60 Hertz, 104.25 VAC across terminals L and N.
Adjust pot R25 on the PC board until the relay trips (de-energizes).
Adjust the OVER setpoint SET pot to 125 percent.
Apply single-phase, 60 Hertz, 173.75 VAC across terminals L and N.
Adjust pot R26 on the PC board until the relay trips (energizes).
Repeat until no adjustments are necessary, then reassemble the module.

UFRO (Under Frequency Roll Off) Adjustment adjustment

⚠ High voltage - use insulating protection

Note the red LED on the board lights when frequency dips below threshold.
Turn the UFRO pot clockwise to raise the threshold frequency.
Turn the UFRO pot counterclockwise to lower the threshold frequency.
Determine threshold frequency by lowering generator frequency until the LED lights.

Voltage and Voltage Stability Adjustments (AVR) adjustment

⚠ High voltage - use dry wooden platform or rubber insulating mat, dry clothing, no jewelry, elbow length insulating gloves

Measure generator output voltage while running without load at nominal frequency.
Lock the control panel voltage trimmer at its midpoint if it cannot provide enough adjustment.
Turn the VOLTS pot fully counterclockwise and the STABILITY pot to its midpoint.
If the red LED lights, refer to Jumper Reconnections and UFRO Adjustments.
Turn the VOLTS pot clockwise until rated voltage is obtained.
If voltage becomes unstable under large load, turn the STABILITY pot clockwise until stable.
Check and readjust the VOLTS pot each time the STABILITY pot is readjusted.

Generator/Base Board Isolation Procedure diagnostic

⚠ This test involves unregulated excitation; disconnect all loads.

⚠ HAZARDOUS VOLTAGE.

Tools: Voltmeter, 12 volt battery, Jumpers

Throw line circuit breaker OFF and shut down the set.
Remove control housing side cover; disconnect exciter stator X and XX leads from AC harness.
Prepare to measure output voltage across generator terminals while set runs.
Connect a 12V battery jumper positive (+) to X lead (Field +).
Check polarity again; polarity must be correct.
Start the set and connect battery negative (-) jumper to XX lead.
If rated output voltage or higher and all phases balanced, generator is likely OK.
If unbalanced troubleshoot main stator; if uniformly low troubleshoot exciter and field circuits.

Servicing the PMG diagnostic

⚠ Touching uninsulated high voltage parts can result in severe personal injury or death.

Tools: Wheatstone bridge, digital ohmmeter

Disconnect leads P2, P3, P4 from voltage regulator.
Start engine and let speed stabilize.
Measure voltage across lead pairs P2-P3, P3-P4, P4-P2; should be at least 150 VAC (50Hz) or 180 VAC (60Hz).
Stop set and measure resistance across same lead pairs; each winding approximately 4.4 ohms.
Torque PMG rotor center bolt to 40 ft-lbs (54 Nm) when reassembling; stator leads must be at 12 o'clock.

Testing Diodes (Rotating Rectifier Assembly) diagnostic

⚠ Brush dust off regularly; layers of dust can cause diodes to overheat and fail

Tools: Ohmmeter

Disconnect the diode pigtails from the terminal posts.
Using an ohmmeter, measure resistance between each diode pigtail and the plate on which it is mounted.
Reverse the meter test probes and repeat the tests.
Resistance should be high in one direction and low in the other.
If resistance is high or low in both directions, replace the diode.
Torque diodes to 36 to 42 in-lbs (4 to 4.8 Nm) and pigtail terminals to 24 in-lbs (2.7 Nm).

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
		AVR response jumper	A to C	For generator output 90 kW or less (SX440 and MX321)
		Auxiliary terminal board TB21	K1, K2, P2, P3, P4, S2, S1, A2, A1	A1 and A2 connect a VAR/power factor controller when paralleling with a utility; S1 and S2 connect a droop compensating CT when paralleling with a generator set or utility
		CT1 - U load leads (A phase); CT2 - V load leads (B phase); CT3 - W load leads (C phase)	6 lead gensets: generator output leads routed through CTs; 12 lead gensets: load wires routed through CTs	12-lead sets have dual secondary CTs (3 pins); 6-lead sets have single secondary CTs (2 pins)
		Day tank LO SHUTDOWN engine shutdown connection	TB1-14 to engine block ground; TB1-15 to TB2-16 on the ECM
		Fault relay K8/K9 (Dry Contact Module)	K8=Over Crank, Low Oil Pressure, High Engine Temperature, Low Coolant Level, Low Fuel Level; K9=Low Fuel Level, Rupture Basin	Contact ratings: 40A max carry/break N.O. 12V coil, 30A N.C. 12V coil, 20A N.O./10A N.C. 24V coil
		MX321 PMG-excited jumper positions	2-3, 4-5 and 6-7	These jumpers must be in these positions
		MX321 voltage regulator frequency jumper	3-2 for 50 Hz; 3-1 for 60 Hz
		SX440 voltage regulator frequency jumper	C-50 for 50 Hz; C-60 for 60 Hz
		TB3 (ECM alternative RUN/STOP/REMOTE connection)	TB3-1=REMOTE, TB3-2=RUN, TB3-3=STOP	Provides alternative direct connection to ECM for troubleshooting or customer connection
		Voltage trimmer R21	voltage regulator terminals 1 and 2	There must be a jumper between terminals 1 and 2 when voltage trimmer R21 is not used
	single phase	QSG-Series power distribution panel voltage selector switch S1 position	main output terminals	Rotary switch under lockable cover selects 120/240 VAC single phase
	single phase	Voltage regulator terminal 6	jumpered to terminal 8	When the generator is connected for single-phase output, terminal 6 is not connected to the isolation transformer
	three phase	QSG-Series power distribution panel voltage selector switch S1 position	main output terminals	Rotary switch selects 120/208 VAC three phase
110V - 120V L-N	Single phase, 2-wire	Jumper locations for single phase, 2-wire		PTC Module AC wiring (0300-5382-01, -02)
120	single phase	Day tank fuel pump control power reconnection	move jumpers from TB1-6/TB1-7 to TB1-5/TB1-6 and TB1-7/TB1-8	Move selector switch S103 on the control PCB to the up position for 120 V (factory set for 240 V, S103 down)
190, 200, 208, 220, 230, 240, 380, 416, 440, 460, 600 (L-L)	3 (three phase)	3 or 4 wires		Voltage Configuration submenu; default = 3Ph 208V 4W
190V - 240V L-L	Three phase	Jumper locations for three phase, 190V-240V L-L		Use 0300-5382-01 for 190V-240V L-L, 50/60 Hz
200, 220, 230, 240 (L-L)	1 (single phase)	3 wires		Voltage Configuration submenu (Governor/Regulator Setup)
200V - 240V L-L	Single phase, 3-wire	Jumper locations for single phase, 3-wire		PTC Module AC wiring
24		Day tank fuel pump control logic power (two lead harness, no transformer)	TB1-19 to positive (+) 24 V starter motor solenoid; TB-20 to negative (-)	Provides 24 VDC for the control circuit
240	single phase	Day tank fuel pump control default factory connection	jumpers between terminals TB1-6 and TB1-7	Selector switch S103 on the control PCB in the down position for 240 V
380V - 600V L-L	Three phase	Jumper locations for three phase, 380V-600V L-L		Use 0300-5382-02 for 380V-600V L-L, 50/60 Hz

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 DGFB?

The Cummins/Onan DGFB is rated 175 kW standby (219.0 kVA).

What engine does the Cummins/Onan DGFB use?

The Cummins/Onan DGFB is powered by the Cummins/Onan 6CTA8.3 engine.

Is the Cummins/Onan DGFB diesel or gas?

The Cummins/Onan DGFB runs on Diesel.

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

The Cummins/Onan 6CTA8.3 engine in the Cummins/Onan DGFB has an oil capacity of 19.0 liters.

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

The Cummins/Onan DGFB cooling system holds 28 liters (7.4 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the Cummins/Onan DGFB?

The Cummins/Onan DGFB is rated 160 kW prime (200 kVA), against 175 kW standby.

What size fuel tank does the Cummins/Onan DGFB have?

The Cummins/Onan DGFB has a 24.8 liter (7 US gallon) fuel tank.

What voltages is the Cummins/Onan DGFB available in?

The Cummins/Onan DGFB is offered in 110/190 V, 120/208 V, 220/380 V, 240/416 V, 139/240 V, 277/480 V, 3-phase.

What battery does the Cummins/Onan DGFB use?

The Cummins/Onan DGFB uses 1 battery, 12 Volts DC V each, 1080 CCA, group 4D, per the manufacturer specification sheet.

What oil filter does the Cummins/Onan DGFB use?

The Cummins/Onan DGFB uses oil filter part number LS1174s.

What fuel filter does the Cummins/Onan DGFB use?

The Cummins/Onan DGFB uses fuel filter part number 3843760.

What air filter fits the Cummins/Onan DGFB?

The Cummins/Onan DGFB uses air filter part number AF4669.

Troubleshooting

Symptoms & remedies

Symptom	Remedy
Generator does not start	Check the fault codes and refer to the troubleshooting table for specific issues. Ensure that all connections are secure, and the control panel is powered on.
Generator produces low voltage output	Refer to the fault codes and troubleshooting table for possible causes such as a faulty alternator or incorrect settings. Check the generator's load and ensure it is within the rated capacity.
Generator produces high voltage output	Refer to the fault codes and troubleshooting table for possible causes such as a faulty alternator or incorrect settings. Check the generator's load and ensure it is within the rated capacity.
Generator produces inconsistent voltage output	Refer to the fault codes and troubleshooting table for possible causes such as a faulty alternator or incorrect settings. Check the generator's load and ensure it is within the rated capacity.
Generator produces inconsistent frequency output	Refer to the fault codes and troubleshooting table for possible causes such as a faulty alternator or incorrect settings. Check the generator's load and ensure it is within the rated capacity.
Generator produces noise during operation	Refer to the fault codes and troubleshooting table for possible causes such as a faulty alternator or incorrect settings. Check the generator's load and ensure it is within the rated capacity.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan DGFB troubleshooting guide (87 entries) →

Parts

250

Part #	Description	Qty	System
102-1147	Gasket, Drain-Oil Pan	1	Gasket	Amazon eBay
102-1356	Gasket, Oil Drain	1	Gasket	Amazon eBay
106334	Hose, Plain	1	Hose	Amazon eBay
122-0756	Element - Oil Filter	1	Oil filter	Amazon eBay
130-3216	V-belt	1	Belt	Amazon eBay FridayParts $17.99
130-3536	Filter, Water - Service	1	Coolant filter	Amazon eBay
130-3539	Filter, Water - Pre-Charging	1	Coolant filter	Amazon eBay
140-2241	Element, Air Cleaner	1	Air filter	Amazon eBay $299.95 NAPA $87.00
140-2251	Element, Air Cleaner Secondary (Inner)	1	Air filter	Amazon eBay
140-2252	Element, Air Cleaner - Secondary (Inner)	1	Air filter	Amazon eBay
145530	Seal, O Ring	1	Seal	Amazon eBay
149-2250	Filter, Fuel - Primary	1	Fuel filter	Amazon eBay
149-2251	Filter, Fuel - Secondary	1	Fuel filter	Amazon eBay $19.95
150-0956	COVER, FLYWHEEL GUARD	1	Sensor	Amazon eBay
150-2201	Sensor, Speed – Magnetic	1	Sensor	Amazon eBay
155-3150-04	Muffler, Critical	1	Muffler	Amazon eBay
155-3164-01	Pipe, Exhaust	1	Pipe	Amazon eBay
193-0244	Sender, Pressure - 0i1	1	Sensor	Amazon eBay
193-0322	Sender, Coolant-Low	1	Sensor	Amazon eBay
193-0353	Sender, Temperature - Oil	1	Sensor	Amazon eBay
193-0375	# Sender, Water Temperature	1	Sensor	Amazon eBay
210753	Clamp, Hose	4	Hose	Amazon eBay
3016627	Alternator	1	Alternator	Amazon eBay FridayParts $175.24
3016628	Alternator	1	Alternator	Amazon eBay
3025152	Hose, Plain	1	Hose	Amazon eBay $74.95
309-0128	Thermostat - Adjustable	1	Thermostat	Amazon eBay
309-0269	Sender, Temperature-Lo Engine	1	Sensor	Amazon eBay $239.00
309-0272	Regulator, Voltage - 24 VDC (Used on 35 A MP Alternator)	1	Alternator	Amazon eBay
309-0555	Switch, Thermostatic	1	Sensor	Amazon eBay
309-0561	Alternator & Drive Components Group Pulley. Alternator - Multi Groove (Use with 35 A MP Alternator)	1	Alternator	Amazon eBay
319-2653	Window, Control (If Equipped)	1	Window	Amazon eBay
3283227	Coupling, Plain Hose	1	Hose	Amazon eBay
3318853	Combination Full-Flow/Bypass Lubricating Oil Filter	1	Oil filter	Amazon eBay $74.95 NAPA $66.59
3377363	Lube Oil, Cummins Premium Blue 15W40 (one-gallon jugs)	6 Gal.	Fluid	Amazon eBay
3519762	Gasket, Turbocharger	1	Gasket	Amazon eBay
3802975	Pump, Water	1	Pump	Amazon eBay FridayParts $143.99
3819725	Clamp, Hose	2	Seal	Amazon eBay KuduParts $10.00
3833680	Bracket, Air Cleaner	2	Air filter	Amazon eBay $74.95
3837348	Cleaner, Air	1	Air filter	Amazon eBay $659.95
3843760	Fuel Filter (Fleetguard FS1251 equivalent)	1	Fuel filter	Amazon eBay $74.95
3897933	Bracket, Belt Guard	1	Belt	Amazon eBay
3897934	Bracket, Belt Guard	1	Belt	Amazon eBay
3897937	Bracket, Belt Guard	1	Belt	Amazon eBay
3902089	Seal, O Ring	1	Seal	Amazon eBay
3902466	Seal, Rectangular Ring	1	Seal	Amazon eBay
3903475	Seal, Rectangular Ring	1	Seal	Amazon eBay FridayParts $220.00
3905084	Hose, Flexible	1	Hose	Amazon eBay
3905449	Seal, Rocker Lever Cover	1	Seal	Amazon eBay
3907167	Coupling, Plain Hose	1	Hose	Amazon eBay
3907177	Seal, Rectangular Ring (Cylinder-Block group BP97003)	1	Seal	Amazon
3908139	Front Seal Service Kit, includes installation tools (Front-Gear-Cover group BP9733-04)	1	Seal	Amazon
3910824	Seal, O Ring	6	Seal	Amazon eBay FridayParts $11.91
3911560	Belt, Drive - Alternator	1	Belt	Amazon eBay FridayParts $43.37
3911562	Belt	1	Belt	Amazon eBay $26.05
3911571	Belt, Drive - Fan & Altr (6CTA Engine)	1	Belt	Amazon eBay $74.95 FridayParts $49.99
3911875	Hose, Flexible	1	Hose	Amazon eBay
3911880	Coupling, Elbow Hose	1	Hose	Amazon eBay
3912183	Hose, Plain	1	Hose	Amazon eBay
3913724	Hose, Plain	1	Hose	Amazon eBay
3913751	Hose, Plain	1	Hose	Amazon eBay
3913994	Seal, O Ring (Front-Gear-Cover group BP9733-04)	1	Seal	Amazon
3914303	Gasket, Gear Housing (Front-Gear-Cover group BP9733-04)	1	Gasket	Amazon
3914311	Gasket, Int Manifold Cover	1	Gasket	Amazon eBay
3916300	Gasket, Turbocharger	1	Gasket	Amazon eBay FridayParts $12.52
3916529	Hose, Plain	1	Hose	Amazon eBay
3917779	Gasket, Gear Cover (Front-Gear-Cover group BP9733-04)	1	Gasket	Amazon
3918163	Clamp, Hose	8	Hose	Amazon eBay
3918521	Clamp, Hose	1	Hose	Amazon eBay
3918607	Hose, Elbow	1	Hose	Amazon eBay
3918611	Hose, Plain	3	Hose	Amazon eBay
3918779	Gasket, Connection	1	Gasket	Amazon eBay
3919520	Bracket, Air Cleaner	1	Air filter	Amazon eBay $224.95
3920762	Hose, Elbow	1	Hose	Amazon eBay
3921402	Motor, Starting	1	Starter	Amazon eBay
3921403	Starter 24V	1	Starter	Amazon eBay FridayParts $484.88
3921633	Guard, Belt	1	Belt	Amazon eBay
3921691	Gasket, Exh Out Connection	1	Gasket	Amazon eBay
3922900	Tensioner, Belt	1	Belt	Amazon eBay FridayParts $39.70
3925025	Hose, Molded	1	Hose	Amazon eBay
3925697	Bracket, Belt Tensioner	1	Belt	Amazon eBay
3926534	Housing, Thermostat	1	Thermostat	Amazon eBay
3928639	Thermostat	2	Thermostat	Amazon eBay FridayParts $15.70
3929614	Pump, Water	1	Pump	Amazon eBay
3931350	Gasket, Oil Drain	1	Gasket	Amazon eBay $74.95
3931608	Gasket, Acc Drive Cover	1	Gasket	Amazon eBay $74.95 KuduParts $8.00
3931824	Seal, O Ring	1	Seal	Amazon eBay
3931970	Hose, Plain	1	Hose	Amazon eBay $82.45
405-5744	Post, Housing - Center	4	Post	Amazon eBay
405-5832	Door, Housing	6	Door	Amazon eBay
405-5908	Panel, Side - Radiator Housing	2	Panel	Amazon eBay
405-5916	Post, Corner - Housing	2	Post	Amazon eBay
405-5917	Panel, End - Roof	2	Panel	Amazon eBay
406-0831	Hinge, Door	14	Hinge	Amazon eBay
501-0441	Line, Fuel - Flex (Fuel In)	1	Hose	Amazon eBay
502-0047	Nipple, Pipe (1/4)	1	Nipple	Amazon eBay
503-0197	Clip, Hose	1	Hose	Amazon eBay $7.99
503-0365	Clamp, Hose	1	Hose	Amazon eBay
503-0446	Clamp, Hose	2	Hose	Amazon eBay
503-0465	Clamp, Hose	2	Hose	Amazon eBay $23.99
503-0685	Clamp, Hose	1	Hose	Amazon eBay $15.00
503-1195	Hose (3/4"ID x 24"LG)	1	Hose	Amazon eBay
503-1379-01	Hose, Radiator	2	Hose	Amazon eBay
503-1595	Hose	1	Hose	Amazon eBay
503-1599	Hose, Radiator	1	Hose	Amazon eBay
509-0266-02	O-Ring	1	Seal	Amazon
526-0451	Washer, Flat - Stainless Steel (M8)	2	Washer	Amazon eBay
AC9055-01	Air Cleaner	1	Air filter	Amazon eBay
AF4669	Air Cleaner	1	Air filter	Amazon eBay $225.00
B-45	CHECKING BATTERY		Battery	Amazon SinoCMP $1269.00
FS1251	Fuel Filter	1	Fuel filter	Amazon eBay $119.92 NAPA $23.51
LF9009	Lube Filter	1	Oil filter	Amazon eBay $110.91 NAPA $70.33 FridayParts $125.00
LS1174s	OIL FILTER		Oil filter	Amazon eBay
RU5045	Air Cleaner	1	Air filter	Amazon eBay $26.95 NAPA $101.05
V70509	Lube Oil	4 Gal.	Fluid	Amazon eBay
WF2072	Coolant Filter	1	Coolant filter	Amazon eBay $20.95 NAPA $29.33
102-1237	Adapter, Drain-Oil	1	Service part / kit	Amazon eBay
102483	End, Control Rod	2	Service part / kit	Amazon eBay
108722	Clip	2	Service part / kit	Amazon eBay FridayParts $50.00
127007	Screw, Pan Head Cap	6	Service part / kit	Amazon eBay
130-3212	Advanced Efficiency Hydraulic/Transmission Filter	1	Service part / kit	Amazon eBay FridayParts $65.40
140-1260	Fitting, Safety Filter	2	Service part / kit	Amazon eBay $116.27 NAPA $10.13
140-1548	Indicator, Service	1	Service part / kit	Amazon eBay $49.99 NAPA $32.16
140-2240	Cleaner, Air (Incl Element)	1	Service part / kit	Amazon eBay
140332	Clamp, T Bolt	2	Service part / kit	Amazon eBay
146159	Washer, Plain	1	Service part / kit	Amazon eBay
146160	Washer, Plain	4	Service part / kit	Amazon eBay
155-2307	Silencer	1	Service part / kit	Amazon eBay
180371	Clip	2	Service part / kit	Amazon eBay
203555	Connection, Exhaust Outlet	1	Service part / kit	Amazon eBay FridayParts $293.27
204991	Washer, Plain	2	Service part / kit	Amazon eBay
213365	Screw, Hexagon Head Cap	8	Service part / kit	Amazon eBay
3007636	Plug, Expansion	1	Service part / kit	Amazon eBay
3008468	Plug, Pipe 1/2 NPT	1	Service part / kit	Amazon eBay $74.95
3010596	Screw, Captive Washer Cap	2	Service part / kit	Amazon eBay
3018006	Screw, Hexagon Head Cap	1	Service part / kit	Amazon eBay
3026910	Cable	1	Service part / kit	Amazon eBay
3028870	Connection, Tur Oil Inlet	1	Service part / kit	Amazon eBay
3030871	Gauge, Pressure	1	Service part / kit	Amazon eBay
3030872	Gauge, Temperature	1	Service part / kit	Amazon eBay
3031348	Flange, Power Takeoff	1	Service part / kit	Amazon eBay
3031643	Rectifier	1	Service part / kit	Amazon eBay
3032105	Bearing, Ball	2	Service part / kit	Amazon eBay KuduParts $16.00 FridayParts $17.99
3033379	Control, Vernier	1	Service part / kit	Amazon eBay
3033800	Washer, Plain	4	Service part / kit	Amazon eBay
3035083	Isolator, Vibration	2	Service part / kit	Amazon eBay
3035084	Isolator, Vibration	4	Service part / kit	Amazon eBay
3039554	Switch, Push Button	1	Service part / kit	Amazon eBay
3039570	Ammeter	1	Service part / kit	Amazon eBay
3049554	Hourmeter & Tachometer	1	Service part / kit	Amazon eBay
3050323	Speed Switch, Electronic	1	Service part / kit	Amazon eBay FridayParts $233.99
309-0553	Switch, Temperature-Pre Water	1	Service part / kit	Amazon eBay $127.46
309-0554	SWITCH WATER	1	Service part / kit	Amazon eBay $159.00
3175239	Nut, Lock	4	Service part / kit	Amazon eBay
3284244	Connector, Female	1	Service part / kit	Amazon eBay
332-1473	Lug, Solderless	1	Service part / kit	Amazon eBay
3393823	Bolt, Carriage	1	Service part / kit	Amazon eBay
3885910	Red Paint, Spray can	1	Service part / kit	Amazon eBay
3900629	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay
3900630	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay $74.95 FridayParts $41.99
3900631	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay
3900632	Screw, Hex Flange Head Cap	1	Service part / kit	Amazon eBay
3900633	Screw, Hex Flange Head Cap	1	Service part / kit	Amazon eBay
3901249	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay FridayParts $31.20
3901757	Screw, Hex Flange Head Cap	1	Service part / kit	Amazon eBay
3902115	Screw, Hex Flange Head Cap M12 x 1.75 x 65	1	Service part / kit	Amazon eBay
3902468	Cap, Filler	1	Service part / kit	Amazon eBay KuduParts $9.00 FridayParts $11.76
3902662	Nut, Hexagon Flange	2	Service part / kit	Amazon eBay FridayParts $23.56
3903463	Cover, Access Hole	1	Service part / kit	Amazon eBay KuduParts $10.00 FridayParts $12.98
3903990	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay FridayParts $12.58
3904971	Connection Water Transfer	1	Service part / kit	Amazon eBay
3905156	Shim A/R 1.00 mm Thick	8	Service part / kit	Amazon eBay
3905157	Shim A/R 1.04 mm Thick	8	Service part / kit	Amazon eBay
3905158	Shim A/R 1.08 mm Thick	8	Service part / kit	Amazon eBay
3905159	Shim A/R 1.10 mm Thick	8	Service part / kit	Amazon eBay
3905160	Shim A/R 1.14 mm Thick	8	Service part / kit	Amazon eBay
3905161	Shim A/R 1.18 mm Thick	8	Service part / kit	Amazon eBay
3905162	Shim A/R 1.20 mm Thick	8	Service part / kit	Amazon eBay
3905163	Shim A/R 1.24 mm Thick	8	Service part / kit	Amazon eBay
3905164	Shim A/R 1.28 mm Thick	8	Service part / kit	Amazon eBay
3905165	Shim A/R 1.30 mm Thick	8	Service part / kit	Amazon eBay
3905166	Shim A/R 1.34 mm Thick	8	Service part / kit	Amazon eBay
3905167	Shim A/R 1.38 mm Thick	8	Service part / kit	Amazon eBay
3905168	Shim A/R 1.40 mm Thick	8	Service part / kit	Amazon eBay
3905169	Shim A/R 1.44 mm Thick	8	Service part / kit	Amazon eBay
3905170	Shim A/R 1.48 mm Thick	8	Service part / kit	Amazon eBay
3905171	Shim A/R 1.50 mm Thick	8	Service part / kit	Amazon eBay
3905172	Shim A/R 1.54 mm Thick	8	Service part / kit	Amazon eBay
3905173	Shim A/R 1.58 mm Thick	8	Service part / kit	Amazon eBay
3905174	Shim A/R 1.60 mm Thick	8	Service part / kit	Amazon eBay
3905175	Shim A/R 1.64 mm Thick	8	Service part / kit	Amazon eBay
3905176	Shim A/R 1.68 mm Thick	8	Service part / kit	Amazon eBay
3905177	Shim A/R 1.70 mm Thick	8	Service part / kit	Amazon eBay
3905178	Shim A/R 1.74 mm Thick	8	Service part / kit	Amazon eBay
3905180	Shim A/R 1.78 mm Thick	8	Service part / kit	Amazon eBay
3905181	Shim A/R 1.80 mm Thick	8	Service part / kit	Amazon eBay
3905182	Shim A/R 1.84 mm Thick	8	Service part / kit	Amazon eBay
3905183	Shim A/R 1.88 mm Thick	8	Service part / kit	Amazon eBay
3905184	Shim A/R 1.90 mm Thick	8	Service part / kit	Amazon eBay
3905185	Shim A/R 1.94 mm Thick	8	Service part / kit	Amazon eBay
3905186	Shim A/R 1.98 mm Thick	8	Service part / kit	Amazon eBay $74.95
3906436	Tube, Water Inlet	1	Service part / kit	Amazon eBay
3906439	Plate, Clamping	1	Service part / kit	Amazon eBay
3906619	Plug, Pipe	1	Service part / kit	Amazon eBay
3906715	Screw, Hex Flange Head Cap	2	Service part / kit	Amazon eBay
3906733	Screw, Hex Flange Head Cap	4	Service part / kit	Amazon eBay
3907978	Stud M10 x 1.50(Both Ends) x 50	4	Service part / kit	Amazon eBay
3908402	Tube, Water Outlet	1	Service part / kit	Amazon eBay
3910901	Screw, Hex Flange Head Cap	1	Service part / kit	Amazon eBay
3911670	Manifold, Exhaust	1	Service part / kit	Amazon eBay
3912151	Plate, Clamping	2	Service part / kit	Amazon eBay
3912159	Connection, Water Outlet	1	Service part / kit	Amazon eBay
3914502	Aftercooler	1	Service part / kit	Amazon eBay
3914868	Plate, Cover	1	Service part / kit	Amazon eBay FridayParts $41.48
3915772	Seal, Rectangular Ring (Front-Gear-Cover group BP9733-04)	1	Service part / kit	Amazon
3916326	Connection, Exhaust Outlet	1	Service part / kit	Amazon eBay
3916518	Screw, Hex Flange Head Cap M10 x 1.50 x 125	8	Service part / kit	Amazon eBay FridayParts $42.10
3916585	Screw, Hexagon Head Cap	6	Service part / kit	Amazon eBay
3917394	Connection, Water Transfer	1	Service part / kit	Amazon eBay FridayParts $39.00
3918109	Screw, Hex Flange Head Cap M8 x 1.25 x 25	18	Service part / kit	Amazon eBay
3918192	Washer, Sealing	2	Service part / kit	Amazon eBay
3918498	Screw, Hex Flange Head Cap M10 x 1.50 x 145	4	Service part / kit	Amazon eBay
3918500	Tube, Air	1	Service part / kit	Amazon eBay
3918542	Spacer, Mounting	1	Service part / kit	Amazon eBay
3918927	Connection Water Transfer	1	Service part / kit	Amazon eBay
3919461	Block, Terminal	1	Service part / kit	Amazon eBay
3919462	Harness, Wiring	1	Service part / kit	Amazon eBay
3919465	Cabinet, Instrument	1	Service part / kit	Amazon eBay
3919467	Decal	1	Service part / kit	Amazon eBay
3919563	Tube, Water Transfer	1	Service part / kit	Amazon eBay
3919577	Heater, Engine	1	Service part / kit	Amazon eBay
3919578	Panel, Instrument	1	Service part / kit	Amazon eBay
3919585	Panel, Eng Instrumentation	1	Service part / kit	Amazon eBay
3919687	Connector, Female	1	Service part / kit	Amazon eBay FridayParts $13.58
3919748	Dataplate	1	Service part / kit	Amazon eBay
3919750	Brace, Exh Out Connection	1	Service part / kit	Amazon eBay $211.70
3919751	Shield, Heat	1	Service part / kit	Amazon eBay
3919814	Connection, Tur Oil Drain	1	Service part / kit	Amazon eBay
3919815	Tube, Tur Oil Drain	1	Service part / kit	Amazon eBay
3919871	Bracket, Cable	1	Service part / kit	Amazon eBay
3921533	Shield, Dust	1	Service part / kit	Amazon eBay FridayParts $15.99
3921724	Tag, Identification	1	Service part / kit	Amazon eBay
3923360	Plate, Clamping	3	Service part / kit	Amazon eBay
3924389	Washer, Sealing	1	Service part / kit	Amazon eBay
3924798	Shaft, Idler	1	Service part / kit	Amazon eBay
3925186	Screw, Flat Head Cap	2	Service part / kit	Amazon eBay
3925568	Damper, Vibration	1	Service part / kit	Amazon eBay FridayParts $145.99
3925749	Connector, Banjo	1	Service part / kit	Amazon eBay $229.95
3925883	Screw, Hex Flange Head Cap	1	Service part / kit	Amazon eBay
3926125	Screw, Hexagon Head Cap	3	Service part / kit	Amazon eBay
3926901	Pulley, Idler	1	Service part / kit	Amazon eBay KuduParts $50.00

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%	13.0	3.4
Prime	50%	23.0	6.1
Prime	75%	33.0	8.8
Prime	100%	45.0	12.0
Standby	25%	14.0	3.7
Standby	50%	25.0	6.6
Standby	75%	36.0	9.6
Standby	100%	11.0	2.9

Available documents

Spec sheet — Cummins-DGFB-data-sheet (Cummins/Onan)Spec sheet — Cummins-DGFB-spec-sheet (Cummins/Onan)Operator's manual — 960-0107 Cummins DGBB DGCB DGDB DGFA Operator's Manual (7-2009) (Cummins/Onan)Operator's manual — 960-0144 Onan DGEA DGFA DGFB Operator's Manual (7-2009) (Cummins/Onan)Operator's manual — 960-0615C Cummins DGBB DGC DGFA Series Operator's Manual (10-2003) (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 — 0960-0211 I8 201410 (Cummins/Onan)Parts manual — 0960-0233 (Cummins/Onan)Parts manual — 0960-0297 I9 202204 (Cummins/Onan)Parts manual — 960-0233 Onan DGEA DGFA DGFB CT61CTA Parts Manual (2-1993) (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 — 960-0518D Cummins DGBB DGC DGDA DGFB Series Service Manual (2-2004) (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)

This page was generated from the 16 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Cummins/Onan DGFB Generator Set

Service parts for the DGFB

Air intake

Fuel system

Oil system

Belts

Electrical

Specifications

Engine

Filters for the Cummins/Onan 6CTA8.3

Maintenance & consumables

Service intervals

Service specifications

Recommended fluids

Fault codes

Procedures

Voltage reconnection

Common questions

Troubleshooting

Symptoms & remedies

Repair guides

Parts

Fuel consumption

Available documents