Service parts for the DFHA
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
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 | 750 kW |
| Standby kVA | 938 |
| Prime power | 680 kW |
| Emissions | EPA |
| Controller | PCC 3100 (PowerCommand), PCC3100, PowerCommand, PowerCommand 3100 |
| Oil capacity | 132.0 L |
| Alternator | Not specified |
| Voltage options | 24 V |
| Phase | Three Phase |
| Rated current | 1128 A |
| Power factor | 0.8 |
| Circuit breaker | 1128 A |
| Battery group | ['8D'] |
| Battery cranking | 1400 CCA |
| Battery voltage | 12 V |
| Battery quantity | 2 |
| Coolant capacity | 216 L |
| Max ambient | 40 °C |
| Dimensions (L×W×H) | 4260×1743×2328 mm |
| Dry weight | 7676 kg |
| Wet weight | 7973 kg |
| Fuel tank | 207.3 L |
| Tank runtime | Not specified hr |
Engine
| Oil capacity | 76.0 L |
|---|---|
| Coolant capacity | 85.0 L |
| Displacement | 30.5 L |
| Aspiration | Turbocharged and Aftercooled |
| Rated speed | 2100 rpm |
Filters for the Cummins/Onan QST30
4Engine-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.
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 |
| Oil filter | P559000 | Lube Filter, Spin-On Full Flow | CUMMINS 2101869, CUMMINS 2882674, NAPA 400107, BALDWIN BD7154 | KuduParts $17.00 FridayParts $36.00 |
| Fuel / water separator | P552216 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3309437, CUMMINS 3313304, NAPA 3613, BALDWIN BF1216 | buy |
| Fuel / water separator | P552006 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 | FridayParts $42.88 |
Same engine, other brands
1 brandThe Cummins/Onan QST30 in this set also powers 3 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 |
|---|---|
| AKSA | AC1026, AC1130, AC880 |
Maintenance & consumables
for the Cummins/Onan QST30| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Cleaner, Air | 140-3288-02 | Amazon eBay | ||
| Fuel filter | — | 2000 hr | |||
| Fuel filter | Water/Fuel Filter Wrench | 3376807 | Amazon eBay | ||
| Oil filter | (4) Cummins Filtration LF9001 | 3825142 | 2000 hr | Amazon eBay | |
| Battery | 120/208-240V, 6/3A | ×2 | 356248 | eBay | |
| Belt | 2.5VAC minimum | ST669 | 500 hr | Amazon eBay $204.59 | |
| Coolant | 200.6 | — | 6000 hr | ||
| Coolant filter | Recommended cooling water filter | — | 1000 hr | ||
| Oil | Lube Oil Filter Types: Four spin-on, full flow; two bypass oil filters | 132.5 | — | 2000 hr | |
| Spark plug | not specified | — | 1000 hr |
Service intervals
2| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Crankcase Oil and Filter | Change | 250 hr | 12 mo | Footnote X6: If genset is used for standby applications, change oil every 12 months or 250 hours, whichever comes first |
| Rupture basin leak detect switch | Test | 12 mo | In some areas, weekly inspections may be required by safety code regulations. |
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
60| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Clearance | Actuator maximum range | 0 - 21 | mm | |
| Clearance | Actuator position fault threshold | 1.5 | mm | more than commanded position |
| Clearance | Exhaust pipe clearance from combustible wall or partition | 12 | inches (305 mm) | |
| Clearance | Fuel line minimum clearance from electrical wiring | 1/2 | inch (12.7 mm) | |
| Clearance | Fuel line minimum clearance from hot exhaust parts | 2 | inch (51 mm) | |
| Clearance | Fuel rack position range | 0 - 21 | mm | |
| Clearance | Generator/engine angular alignment T.I.R. (max) | .001 | inch per inch of radius (center of shaft to indicator axis) | dial indicator at bolt circle diameter |
| Clearance | Left/right actuator fault threshold (more than this from commanded position) | 1.5 | mm | |
| Clearance | Vibration isolator base elevation difference (max) | 0.25 | inch (6 mm) | shimmed or grouted, flat and level surface |
| Clearance | Vibration isolator top plate clearance (nominal) | 0.25 | inch (6 mm) | level, genset installed |
| Gap | Fuel rack travel (rack test) | 0 to 19 | mm | rack test |
| Gap | Governor actuator position fault threshold | more than 1.5 from commanded position | mm (actuator range 0-21 mm) | |
| Other | Battery electrolyte specific gravity (charge threshold) | 1.215 | charge battery if below this reading | |
| Other | Battery electrolyte specific gravity (fully charged) | 1.260 | corrected to 80°F (27°C) | |
| Other | Bearing grease quantity | 81 | ml | |
| Other | Engine torque adjustment range | 0% to +1% | duty cycle units | approximately 0% to +2% engine horsepower |
| Other | Generator insulation resistance (frame HC6) | 5.0 - 1.0 | MEG | 500 VDC megger setting |
| Other | Generator insulation resistance (frame P7) | 10.0 - 1.0 | MEG | 500 VDC megger setting |
| Other | Governor duty cycle range | 25 - 93 | % | |
| Other | Polarization Index (PI) acceptance ratio | 2 or greater | ratio (10 min megohms / 1 min megohms) | new and in-service sets |
| Other | Rack position test voltage (disconnect fuel pump) | 1.3 ±.25 to 4.5 ±.25 | VDC | racks moved to 0mm |
| Other | Rack test position range | 0 to 19 | mm | |
| Other | Start delay adjustment range | 0 to 300 | seconds | |
| Other | Start delay adjustment range (Auto mode remote start) | 0 to 300 | seconds | |
| Other | Stop delay adjustment range | 0 to 600 | seconds | |
| Other | Stop delay adjustment range (Auto mode remote stop) | 0 to 600 | seconds | |
| Other | Torque adjustment range | 0% to +1% | % duty cycle | |
| Other | Voltage regulator PWM duty cycle range | 0 - 60 | % | |
| Other | Wrist strap resistance | approximately 1 | megohm | |
| Pressure | Engine oil pressure - idle | 20 | psi | idle mode |
| Pressure | Engine oil pressure - idle mode shutdown limit | 10 | psi | idle mode |
| Pressure | Engine oil pressure - idle mode warning limit | 15 | psi | idle mode |
| Pressure | Engine oil pressure - normal | 45-65 | psi | run mode |
| Pressure | Engine oil pressure - run mode shutdown limit | 35 | psi | run mode |
| Pressure | Engine oil pressure - run mode warning limit | 40 | psi | run mode |
| Pressure | Idle oil pressure | 20 | psi (138 kPa) | idle |
| Pressure | Idle oil pressure shutdown limit | 10 | psi (69 kPa) | idle |
| Pressure | Idle oil pressure warning limit | 15 | psi (103 kPa) | idle |
| Pressure | Max Back Pressure | 41.0 | in. H2O (10.2 kPa) | |
| Pressure | Max. Static Restriction | 0.50 | in H2O (124.50 Pa) | |
| Pressure | Maximum Air Cleaner Restriction | 25.0 | in. H2O (6.2 kPa) | |
| Pressure | Maximum Coolant Friction Head | 10.0 | psi (68.9 kPa) | |
| Pressure | Maximum Coolant Static Head | 46.0 | ft (14.0 m) | |
| Pressure | Maximum Inlet Restriction | 4.0 | in. Hg (101.6 mm Hg) | |
| Pressure | Maximum Return Restriction | 10.0 | in. Hg (254.0 mm Hg) | |
| Pressure | Maximum allowable exhaust back pressure | 27 | in. H2O (6.7 kPa) | |
| Pressure | Maximum allowable exhaust back pressure | 41 | in. H2O (10.2 kPa) | |
| Pressure | Maximum compressed air pressure for cleaning air filter element | 30 | psi (207 kPa) | air cleaner element cleaning |
| Pressure | Maximum compressed air pressure for cleaning radiator | 35 | psi (242 kPa) | radiator cleaning |
| Pressure | Maximum fuel inlet pressure | 10 | PSI (69 kPa) | |
| Pressure | Maximum fuel inlet restriction | 4 | in. Hg. (13.5 kPa) | |
| Pressure | Maximum fuel return restriction | 10 | in. Hg. (33.8 kPa) | |
| Pressure | Maximum fuel return restriction | 20 | in. Hg. (67.6 kPa) | |
| Pressure | Normal oil pressure | 45-65 | psi (310-448 kPa) | normal operating |
| Pressure | Oil pressure idle - QST30 engine | 20 | psi (138 kPa) | idle |
| Pressure | Oil pressure normal - QST30 engine | 45-65 | psi (310-448 kPa) | normal |
| Pressure | Oil pressure shutdown limit | 10 | psi (69 kPa) | idle mode |
| Pressure | Oil pressure shutdown limit | 35 | psi (241 kPa) | run mode |
| Pressure | Oil pressure shutdown limit - idle mode | 10 | psi | |
| Pressure | Oil pressure shutdown limit - run mode | 35 | 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 | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | ASTM No. 2 diesel fuel | Cummins engines normally use ASTM No. 2 diesel fuel and will operate on alternate diesel fuels within the specifications shown in the Cummins engine Operation and Maintenance Manual. Never use galvanized or copper fuel lines, fittings or fuel tanks. | |||
| Fuel | number 2 diesel fuel | Direct injection | |||
| Grease | Kluber, type ASONIC GHY72 | 75.0 grams | P7 generator bearing re-lubrication grease; must be filled with same type used at manufacture and MUST NOT be mixed with any other type. | ||
| Grease | Lithium based grease, Mobilux No. 2 or Shell Alvania R3 | -30°C to 120°C | 2.74 oz (81 ml) | Generator end bearing lubrication; grease divided equally between bearing, bearing cap cavity and bearing cartridge cavity |
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
43| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 101 | IDLE MODE | Indicates the engine is operating in idle mode. Grounding the engine idle input causes generator build-up to be inhibited and the engine to be governed at 800 RPM. | Warning | When ground is removed from the input, the genset returns to normal speed and voltage. |
| 102 | EMERGENCY STOP | Local or remote Emergency Stop activated. | Shutdown | Turn switch clockwise to pop out (local); move Run/Off/Auto to Off; press Reset; select Run or Auto. |
| 200 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped to an unacceptable level. | Warning | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow the 201-SHUTDOWN procedure. To check oil pressure, access the Oil Pressure menu prior to clearing the fault. |
| 201 | LOW OIL PRESSURE | Indicates engine oil pressure has dropped below the shutdown trip point. | Shutdown | Check oil level, lines and filters; reset control and restart. |
| 204 | OIL PRES SENDER | Oil pressure sender out of working range. | Warning | Check that the oil pressure sender is properly connected. |
| 210 | LOW COOLANT TEMP | Warning occurs when engine coolant temperature is 70 F (21 C) or lower. May be indicated even though coolant heaters are operating when ambient temperature falls below 40 F (4 C). | Warning | Check for coolant heater not connected to power supply (blown fuse or disconnected cord); check for low coolant level and replenish; check for open heater element (check current draw). |
| 211 | HIGH COOLANT TEMP | Indicates the engine coolant temperature is getting close to the recommended maximum temperature limit: 215 F (102 C) standby or 207 F (97 C) prime. | Warning | Reduce load; check air inlets/outlets for obstructions. |
| 212 | HIGH COOLANT TEMP | Indicates engine has overheated (coolant temperature above the shutdown trip point: 223 F (106 C) standby or 215 F (102 C) prime). | Shutdown | Check for obstructions to cooling airflow. Check fan belt. Reset control and restart after correcting problem. |
| 213 | COOLANT SENDER | Resistance of coolant temperature sender out of range. | Warning | Contact an authorized service center. |
| 214 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the trip point. | Warning | Check coolant level and replenish; look for leaks. |
| 215 | LOW COOLANT LVL | Indicates engine coolant level has fallen below the trip point. LOW COOLANT LVL Shutdown will not occur if genset is in Idle mode (low coolant warning only). | Shutdown | Check coolant level and replenish. Look for leaks. Reset control and restart. |
| 220 | MAG PICKUP | Mag pickup speed indication not sensed or does not match genset output frequency. | Shutdown | Restart and check RPM. Check wires and MPU adjustment. |
| 221 | FAIL TO CRANK | Possible fault with control or starting system. | Shutdown | Check fuse F3 on the Engine Interface board. Clean the battery cable terminals and tighten all connections. Recharge or replace the battery. |
| 222 | OVERCRANK | Possible fuel system problem. | Shutdown | Check fuel supply, fuel filter and air filter. |
| 223 | OVERSPEED | Indicates engine has exceeded normal operating speed (115% ±1% of nominal). Engine runs and then shuts down. | Shutdown | Perform rack position fault/test; check governor output module A38 and digital board A32. |
| 224 | FAIL TO SYNCHRONIZE | The generator set has not synchronized to the system bus within the allowable time frame. | Check the governor system stability and adjust governing and synchronizer parameters as required. Check for fuel system problems which can cause engine instability. Synchronizing time can be improved by widening the synchronizing window and reducing the acceptance time delay. | |
| 226 | FAIL TO CLOSE | Indicates that the paralleling breaker has been given a signal to close, but has not closed properly. | Verify that the charging mechanism of the paralleling breaker is functioning properly. Check the close signal to the breaker. Verify that the auxiliary contact signals from the breaker to the PowerCommand control are operational. | |
| 230 | LOW DC VOLTAGE | Indicates battery voltage is below 10 VDC. | Warning | Recharge or replace the battery. Check the battery charger fuse. Clean and tighten or replace the battery cable terminals and cables. Check the engine DC alternator; replace if normal charging voltage is not obtained. |
| 231 | HIGH DC VOLTAGE | Indicates battery voltage exceeds 32 VDC. | Warning | Lower battery charger float level. |
| 232 | WEAK BATTERY | Indicates battery voltage drops below 60% of nominal for two seconds during starting. | Warning | See warning 230 Low DC Voltage; recharge or replace battery. |
| 240 | LOW FUEL-DAY | Indicates day tank fuel supply is running low. | Warning | Check fuel supply and replenish. |
| 241 | LOW FUEL | Indicates fuel supply is running low. | Warning | Check fuel supply and replenish. |
| 250 | EEPROM ERROR | PCC memory error; data corruption of critical operating parameters. | Shutdown | Perform the initial start setup procedure. If the set shuts down on the same EEPROM ERROR message, replace the digital board (A32). |
| 251 | EEPROM ERROR | PCC memory error; data corruption of non-critical operating parameters. | Warning | Perform the adjustment procedures, save the adjustments and reset the control. If the error persists perform the calibration procedures. If the error still persists replace the digital board (A32). |
| 252 | EEPROM ERROR | PCC memory error; data corruption of non-critical operating parameters. | Warning | Verify values/choices and repeat the save operation; reset; if persists replace A32. |
| 260 | RACK POSITION | One or both fuel racks not at commanded position. | Warning | Programmable to initiate a shutdown or a warning. |
| 261 | GROUND FAULT | Default message; editable for customer site requirements. | Warning | Programmable to initiate a shutdown or a warning. |
| 262 | RUPTURE BASIN / DAY TANK | Default message; editable for customer site requirements. | Warning | Same as customer fault. |
| 263 | HIGH GEN TEMP | Default message; editable for customer site requirements. | Warning | Same as customer fault. |
| 270 | PHASE ROTATION | The phase relationship between the generator set and the system bus is not matched. | Shutdown | Using a phase rotation checker, verify that the generator set phase rotation matches the phase orientation of the system bus. Verify that control wiring to the bus PT module on the PowerCommand control is properly connected. |
| 272 | FIRST START | The PowerCommand control is not receiving a proper signal from the system master first start sensor. The control reverts to a fallback mode in which breaker closure is automatically allowed if bus is de-energized. | Warning | Verify that the Master First Start Sensor is properly functioning (pulsing voltage present on the terminal). Verify the voltage pulse is present at the PowerCommand Control (terminal TB1-50) and repair interconnection wiring. |
| 301 | HIGH AC VOLTAGE | One or more phase voltages exceeded 130% of nominal, or 110% for 10 seconds. | Shutdown | Determine if the output voltage the control sees is low or high. Isolate to the alternator/control, regulator module (A37)/A31/A32, PT/CT module (A36), customer interface board (A34), analog board (A33) or the generator per Table 4-30. |
| 303 | LOW AC VOLTAGE | One or more phase voltages dropped below 85% of nominal for 10 seconds. | Shutdown | Contact an authorized service center. |
| 313 | UNDER FREQUENCY | Indicates that engine speed has dropped below 90% of nominal for 10 seconds. Five seconds before shutdown, a Load Dump signal is initiated. | Shutdown | Contact an authorized service center. |
| 320 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Warning | Contact an authorized service center. |
| 321 | OVERCURRENT | Indicates that generator output current has exceeded 110% of rated, and that a PCC time/current calculation has initiated an overcurrent shutdown. | Shutdown | Contact an authorized service center. |
| 322 | SHORT CIRCUIT | Indicates that generator output current has exceeded 175% of rated. | Shutdown | Contact an authorized service center. |
| 330 | OVERLOAD | Three-phase power output exceeds 105% of standby (or 115% of prime) rating. | Warning | Contact an authorized service center. |
| 335 | REVERSE POWER | Indicates that power is flowing into the generator set rather than out from the unit. Can be caused by engine failure, inability to carry load, or control or interconnection problems. | Shutdown | Verify proper CT orientation, wiring and connections; verify proper connection of load sharing lines; verify the generator set is operating at the correct frequency and voltage per Table 4-34. |
| 337 | LOSS OF EXCITATION | Indicates that the alternator excitation system is improperly adjusted or has failed. May also be caused by operation of filters and power factor correction capacitors presenting a leading power factor load. | Shutdown | Start the generator set in RUN mode and check/calibrate output voltage. Check load sharing lines for proper interconnections. See Section 6 Servicing the Generator, Exciter Rectifier and Exciter Rotor. |
| 401 | INVALID SETUP | Indicates the digital board is not properly calibrated for the generator set model (the model number corresponding to the cut resistor and the initial setup are not compatible). No initial setup data is saved. | Shutdown | Refer to Digital Board (A32) Calibration; correct resistor selection and initial setup. |
| 402 | INVALID CAL | Indicates that the control senses that more than one calibration resistor has been cut. No initial setup data is saved. | Shutdown | Refer to Digital Board (A32) Calibration; correct resistor selection. |
| blank | LOAD DEMAND | The PowerCommand control has received a signal to shut down from a remote device. This is a normal operation mode typically used in automatic control systems to minimize generator set operation hours and system fuel consumption. | When the load demand signal is removed, the generator set will automatically start, synchronize, and close to the system bus. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
12Aligning Generator with Engine adjustment
⚠ Accidental starting during this procedure presents a hazard of severe personal injury or death; disconnect negative battery cable first
Tools: Dial indicator, Shims
- Fasten a dial indicator to the generator shaft or cooling fan with the point on the capscrew head or drive disc flat.
- Bar the engine over clockwise one revolution; record the total indicator reading (T.I.R.).
- Measure distance from generator shaft center to indicator point and from flex discs to mounting bolt center.
- Compute shim change: multiply distance ratio by one half the T.I.R.
- Keep T.I.R. not more than .001 inch for each inch of radius.
- If axial runout is excessive, rotate drive discs 180 degrees (or 30/60/90 degrees) and retorque.
Analog Meter Calibration adjustment
- Select >> from Main Menu, proceed to A−C VOLTS ADJ TO menu.
- Start generator set and allow to reach normal operating speed.
- Calibrate analog Voltmeter to digitally displayed value.
- Calibrate analog % Amps meter to digitally displayed value.
- Calibrate analog % Load meter to digitally displayed value.
- Calibrate analog Frequency meter to digitally displayed value.
- SAVE, then EXIT.
Angular Alignment Procedure adjustment
⚠ Accidental starting during this procedure presents the hazard of severe personal injury or death; disconnect the negative (-) battery cable(s) first.
⚠ Do not bar engine over by prying on fan blade; this may damage the blade and cause sudden blade failure.
Tools: dial indicator, shims, wrenches
- Disconnect the negative (-) battery cable(s) before beginning.
- Fasten a dial indicator to the generator shaft or cooling fan with the sensing point on the capscrew head or flat surface of the drive disc at bolt circle diameter.
- Bar the engine over clockwise as viewed from engine flywheel; do not allow it to roll back on compression at the end of travel.
- Total indicator reading (T.I.R.) is the sum of maximum positive and negative readings over one revolution.
- Compare distance from generator shaft center to indicator point with distance from flex discs to generator mounting bolt center to get a ratio.
- Multiply the ratio by one half the T.I.R. to determine the amount of shims to add or remove under the mounting feet.
Axial Alignment Procedure adjustment
Tools: dial indicator, dial indicator holding device with magnetic base or clamp, capscrew tools, torque wrench
- Check axial misalignment only when an objectionable vibration is present.
- Fasten a dial indicator to skid base, engine block, or generator shell so the sensing point rests on the generator shaft hub.
- Bar the engine over clockwise as viewed from engine flywheel through a couple of rotations.
- Record indicator readings in eight equally spaced points around the shaft diameter to obtain a T.I.R. for axial shaft misalignment.
- To correct out-of-tolerance T.I.R., remove the capscrews connecting drive discs and flywheel and mark the discs and flywheel relative to each other.
- Rotate engine or generator so drive disc holes are repositioned 180 degrees from original location; reinstall and retorque capscrews.
- If runout is unchanged, rotate discs to 30, 60 or 90 degrees from original location.
- If T.I.R. does not improve, inspect the flywheel pilot and drive disc runouts more closely.
Digital Ammeter Display Calibration adjustment
Tools: calibrated ammeter
- Select >> from Main Menu, proceed to AMPS L1 menu.
- With generator set OFF, attach calibrated ammeter to L1.
- Start generator set and allow to reach normal operating speed.
- Load generator set to maximum rated kVA at rated voltage.
- Calibrate AMPS L1 reading to agree with calibrated ammeter.
- Repeat steps 17 through 20 for L2 and L3.
- Select EXIT if no calibration; SAVE then EXIT if calibration made.
Digital Coolant Temperature Display Calibration adjustment
Tools: precision resistor (engine sensor calibration tool)
- With generator set OFF, replace coolant temperature sender with precision resistor in calibration tool.
- Select >> from Main Menu, proceed to COOLANT TEMP L menu.
- Calibrate temperature reading to match calibration tool.
- Repeat step 32 for COOLANT TEMP R if engine uses two sensors.
- Select EXIT if no calibration; SAVE then EXIT if calibration made.
Digital Power Factor Display Calibration adjustment
Tools: power factor meter
- Select >> from Main Menu, proceed to PF1 menu.
- With generator set OFF, attach power factor meter to L1.
- Start generator set and allow to reach normal operating speed.
- Load generator set to maximum rated kVA at rated voltage.
- Calibrate PF1 reading to agree with power factor meter.
- Repeat steps 24 through 27 for L2 and L3.
- Select EXIT if no calibration; SAVE then EXIT if calibration made.
Digital Voltage Display Calibration adjustment
Tools: calibrated frequency/voltmeter
- Select >> from Main Menu, proceed to VOLTS L12 menu.
- With generator set OFF, attach calibrated frequency/voltmeter to AC output L1 to L2.
- Start generator set and allow to reach normal operating speed.
- Calibrate VOLTS L12 reading to agree with calibrated voltmeter.
- Shut generator set OFF.
- Repeat steps 10 through 13 for L23 and L31.
- Select EXIT if no calibration; SAVE then EXIT if calibration made.
Engine Torque Adjustment adjustment
⚠ Calibration and adjustment must be performed by technically qualified personnel only
Tools: Calibrated instruments
- Select >> from the Main Menu to proceed to the Torque Adjust %DC menu.
- Start the generator set and allow it to reach normal operating speed.
- Load the generator set to maximum rated kVA at rated voltage.
- Adjust the torque limit up or down to achieve proper frequency under maximum load.
- Select SAVE to retain the adjustment.
Voltage and Frequency Adjustment adjustment
Tools: calibrated frequency/voltmeter
- Attach calibrated frequency/voltmeter to AC output L1 to L2 with generator set OFF.
- Select ADJUST from Main Menu to display VOLTAGE adjust menu.
- Start generator set and allow to reach normal operating speed.
- Adjust VOLTAGE so calibrated voltmeter reads desired voltage.
- Select Frequency adjust menu.
- Verify frequency on calibrated meter is desired frequency. Adjust if not.
- Select EXIT if no adjustment; SAVE then EXIT if adjustment made.
Generator/PCC Control Isolation Procedure diagnostic
⚠ High voltage - unregulated excitation of the generator is involved
Tools: 12 volt battery, Jumper leads
- Throw the line circuit breaker OFF and shut down the set.
- Remove P10 from connector J10 of the voltage regulator output module (A37).
- Connect a 12 V battery positive jumper to X pin (red wire P10-6) and negative jumper to XX pin (brown wire P10-3).
- Check polarity again; incorrect polarity makes the test inconclusive.
- Start the set and connect the battery negative jumper to the XX lead.
- If rated or higher balanced voltage is obtained, generator is probably OK; troubleshoot PCC control circuitry.
Ground Fault Relay Test diagnostic
- Verify that the N-G Fault Indicator on the GFR is not lit (lit indicates the bonding jumper circuit is open).
- Move the control switch to the Run position.
- Press the TEST switch on the ground fault relay.
- Verify that the control panel warning message is displayed and the Fault Indicator (>I) on the GFR is lit.
- Reset the control panel fault (this will also reset the ground fault relay).
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 |
|---|---|---|---|---|
| PT/CT board J9 | Yellow: Gen. A In; Orange: Gen. B In; Red: Gen. C In; Brown: Gen. Common In; White: CT21 (+) In; Gray: CT21 (common) In; Grn/Ylw: CT22 (+) In; Black: CT22 (common) In; Purple: CT23 (+) In; Blue: CT23 (common) In | |||
| A | CT1 | U load leads | Dot on CT must face alternator. | |
| B | CT2 | V load leads | Dot on CT must face alternator. | |
| C | CT3 | W load leads | Dot on CT must face alternator. |
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 DFHA?
The Cummins/Onan DFHA is rated 750 kW standby (938.0 kVA).
Which engine powers the Cummins/Onan DFHA?
The Cummins/Onan DFHA is powered by the Cummins/Onan QST30 engine.
What fuel does the Cummins/Onan DFHA use?
The Cummins/Onan DFHA runs on Diesel.
How much oil does the Cummins/Onan DFHA take?
The Cummins/Onan QST30 engine in the Cummins/Onan DFHA has an oil capacity of 76.0 liters.
How much coolant does the Cummins/Onan DFHA hold?
The Cummins/Onan DFHA cooling system holds 216 liters (57.1 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan DFHA?
The Cummins/Onan DFHA is rated 680 kW prime (850 kVA), against 750 kW standby.
How much does the Cummins/Onan DFHA weigh?
The Cummins/Onan DFHA has a dry weight of 7676 kg (16922 lb).
How big is the fuel tank on the Cummins/Onan DFHA?
The Cummins/Onan DFHA has a 207.3 liter (55 US gallon) fuel tank, giving about Not specified hours of runtime.
What voltages is the Cummins/Onan DFHA available in?
The Cummins/Onan DFHA is offered in 24 V, Three Phase-phase.
What battery does the Cummins/Onan DFHA use?
The Cummins/Onan DFHA uses 2 batteryies, 12 V each, 1400 CCA, group ['8D'], per the manufacturer specification sheet.
Which alternator is fitted to the Cummins/Onan DFHA?
The Cummins/Onan DFHA uses a Not specified alternator.
Which oil filter part number does the Cummins/Onan DFHA take?
The Cummins/Onan DFHA uses oil filter part number 3825142.
Which fuel filter part number does the Cummins/Onan DFHA take?
The Cummins/Onan DFHA uses fuel filter part number 3376807.
What air filter fits the Cummins/Onan DFHA?
The Cummins/Onan DFHA uses air filter part number 140-3288-02.
Troubleshooting
6Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| 220 | Shutdown lamp lights. MESSAGE: MAG PICKUP 220 − SHUTDOWN | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | A. Restart and check RPM on the digital display. b. Contact an authorized service center. |
| 221 | Shutdown lamp lights. MESSAGE: FAIL TO CRANK 221 − SHUTDOWN | A. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and starting system. | |
| 222 | Shutdown lamp lights. Engine will not crank. MESSAGE: OVERCRANK 222 − SHUTDOWN | A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary. c. Check for dirty or plugged air filter and replace if necessary. d. Reset the control and restart after correcting the problem. Contact an authorized service center if none of the above. | |
| 223 | Shutdown lamp lights. Engine runs and then shuts down. MESSAGE: OVERSPEED 223 − SHUTDOWN | Contact an authorized service center. | |
| 230 | Warning lamp lights. MESSAGE: LOW DC VOLTAGE 230 − WARNING | A. Discharged or defective battery. Check the battery charger fuse. Recharge or replace the battery. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Contact an authorized service center if none of the above. |
Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Shutdown lamp lights. | Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan DFHA troubleshooting guide (18 entries) →
Repair guides
34- Aligning Generator with Engine
- Analog Meter Calibration
- Bearing Lubrication
- Cleaning Batteries
- Convert Day Tank Controller from 240 VAC to 120 VAC
- Day Tank (Fuel Transfer Pump) Control Operation
- Digital Ammeter Display Calibration
- Digital Coolant Temperature Display Calibration
- Digital Power Factor Display Calibration
- Digital Voltage Display Calibration
- Drying the Windings
- Emergency Stop Reset at Control Panel (Code 102)
- Engine Torque Adjustment
- Engine Torque Adjustment
- External Emergency Stop Reset
- Fuel Pump Control AC Connections (120/240 VAC Conversion)
- Generator Set Grounding Procedure (Medium Voltage)
- Ground Fault Relay Test
- Insulation Resistance Testing
- Insulation Resistance Testing
Step-by-step procedures compiled from the Cummins/Onan service manual for this model.
Parts
250| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 01a0028 | Bolts, coupling | 2 | Bolt | Amazon eBay |
| 08a00029 | Drive Belt, Cooling Fan | Belt | Amazon eBay | |
| 100-025-001 | Air Filter | 1 | Air filter | Amazon eBay |
| 100-027-001 | Concentric suction/pressure valve (optional: without filling hoses) | 1 | Oil filter | Amazon eBay |
| 100-028-001 | Coolant Filter | 1 | Belt | Amazon eBay |
| 100-029-001 | AIR FILTER | 1 | Air filter | Amazon eBay |
| 100-030-001 | Oil Filter | 1 | Oil filter | Amazon eBay |
| 100-031-001 | BELT | 1 | Belt | Amazon eBay |
| 100-032-001 | SPARK PLUG | 1 | Spark plug | Amazon eBay |
| 1004193 | Lube, Cartridge | 1 | Oil filter | Amazon eBay $151.00 |
| 10041937 | Hydraulic | 1 | Hydraulic filter | Amazon eBay |
| 1007973 | Air | 1 | Air filter | Amazon eBay $64.99 KuduParts $51.00 |
| 1014120 | Lube, Spin-On | Oil filter | Amazon eBay KuduParts $22.00 | |
| 1076751M1 | Water, Spin-On | Coolant filter | Amazon eBay | |
| 110331287 | Air, Primary | Air filter | Amazon eBay $136.62 | |
| 110337797 | Air, Secondary | Air filter | Amazon eBay $28.61 | |
| 110337854 | Air, Secondary | Air filter | Amazon eBay | |
| 11033838 | Air | Air filter | Amazon eBay | |
| 110338381 | Air | Air filter | Amazon eBay | |
| 11110175 | Air, Primary Magnum RS | Air filter | Amazon eBay $70.00 KuduParts $120.00 | |
| 11110176 | Air, Secondary Magnum RS | Air filter | Amazon eBay $50.00 | |
| 11281524 | Hydraulic, Cartridge | 1 | Hydraulic filter | Amazon eBay KuduParts $32.00 |
| 1132848 | Air, Primary | 1 | Air filter | Amazon eBay |
| 1160024 | Lube, Spin-On | Oil | Amazon eBay $53.49 FridayParts $19.38 | |
| 1160243 | Fuel, Spin-On FF5018* | Fuel filter | Amazon eBay $99.95 FridayParts $18.20 | |
| 1173430 | Lube, Spin-On | 1 | Oil filter | Amazon eBay |
| 1173765 | Lube, Spin-On | 1 | Oil filter | Amazon eBay KuduParts $62.00 FridayParts $63.99 |
| 1174418 | Lube | Oil filter | Amazon eBay $26.99 KuduParts $16.00 | |
| 1174420 | Lube | 1 | Oil filter | Amazon eBay KuduParts $47.00 FridayParts $63.99 |
| 1174421 | Lube | 1 | Oil filter | Amazon Amazon eBay $18.50 eBay $46.50 |
| 1174422 | Fuel | 1 | Fuel filter | Amazon eBay $24.75 KuduParts $40.00 |
| 1174423 | Fuel, User Friendly Version | 1 | Fuel filter | Amazon eBay $18.99 KuduParts $16.00 |
| 1174482 | Fuel, Primary | 1 | Fuel filter | Amazon eBay $49.99 KuduParts $22.00 |
| 1174483 | Fuel | Fuel filter | Amazon eBay | |
| 1180597 | Fuel, Spin-On | 1 | Fuel filter | Amazon Amazon eBay $99.95 eBay $99.95 KuduParts $16.00 |
| 119962280 | Lube, By-Pass Spin-On | Oil filter | Amazon eBay | |
| 119980084 | Lube | Oil filter | Amazon eBay $39.92 KuduParts $25.00 | |
| 119990661 | Fuel | Fuel filter | Amazon eBay FridayParts $26.90 | |
| 1205001 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay KuduParts $11.00 FridayParts $33.98 | |
| 1220185 | Lube, Full-Flow Spin-On | 1 | Oil filter | Amazon Amazon eBay $19.55 eBay NAPA $12.88 |
| 12455035110 | Lube | Oil filter | Amazon eBay | |
| 12455055700 | Fuel | Fuel filter | Amazon Amazon eBay eBay KuduParts $11.00 FridayParts $13.48 | |
| 12919 | Hydraulic | Hydraulic filter | eBay | |
| 1300930 | Hydraulic, Cartridge | 1 | Hydraulic filter | Amazon eBay |
| 1335673 | Fuel, Spin-On | Fuel filter | Amazon eBay $19.99 eBay $19.99 NAPA $70.35 KuduParts $19.00 FridayParts $20.99 | |
| 13800007 | Drive Belt, Alternator | Belt | Amazon eBay | |
| 139097 | Fuel, Cartridge | Fuel filter | Amazon eBay | |
| 140-3288-02 | Cleaner, Air | 2 | Air filter | Amazon eBay |
| 14213938 | Lube | 1 | Oil filter | Amazon eBay $19.99 KuduParts $45.00 |
| 142139385 | Lube | 2 | Oil filter | Amazon eBay |
| 14213939 | Fuel, User Friendly Version | Fuel filter | Amazon eBay KuduParts $16.00 | |
| 142139393 | Fuel, User Friendly Version | Fuel filter | Amazon eBay $24.75 | |
| 14268262 | Hydraulic | 1 | Hydraulic filter | Amazon eBay |
| 142682624 | Hydraulic | Hydraulic filter | Amazon eBay | |
| 143403566 | Hydraulic, Cartridge | Hydraulic filter | Amazon eBay | |
| 14589 | PLATE CAMSHAFT LOCATING | 1 | Air filter | Amazon |
| 149-2713-02 | Bracket, Fuel Filter | 1 | Fuel filter | Amazon eBay |
| 149-2714 | Filter, Fuel - Assembly | 1 | Fuel filter | Amazon eBay |
| 156071560 | Lube, By-Pass | Oil filter | Amazon eBay | |
| 164159SB | Service Gasket | Gasket | Amazon eBay | |
| 1695007 | Lube, By-Pass Cartridge | Oil filter | Amazon eBay $34.99 | |
| 16998304 | Water, Spin-On | Coolant filter | Amazon eBay $17.65 | |
| 173174 | Lube, Cartridge | Oil filter | Amazon eBay FridayParts $520.68 | |
| 173368S | Service Gasket | Gasket | Amazon eBay | |
| 18311122 | Fuel, Cartridge | Fuel filter | Amazon eBay | |
| 1902138 | Fuel | Fuel filter | Amazon eBay | |
| 1903785 | Lube, Combination | Oil filter | Amazon eBay $10.81 | |
| 1909101 | Lube, Spin-On | 1 | Oil filter | Amazon eBay $23.99 |
| 19200074 | Buzzer | Engine harness adaptor cable | Amazon eBay | |
| 193-0465 | Sender, Oil Temperature (E4) | 2 | Sensor | Amazon eBay $62.11 |
| 19a00292 | Engine Speed Sensor | Engine speed sensor | Amazon eBay | |
| 19a00295 | Fuel Shut-Off Valve | Fuel shut off valve | Amazon eBay | |
| 19a00296 | Rack Position Actuator (integral to the RP39 fuel pump) | Rack position actuator | Amazon eBay | |
| 19a00297 | Meter Drivers | Meter drivers | Amazon eBay | |
| 19a00Z25 | Fuel Pump Rack Actuator Valve | Fuel pump rack actuator valve | Amazon eBay | |
| 1P2299 | Fuel, Cartridge | Fuel filter | Amazon eBay $13.79 | |
| 1R0739 | Lube, Spin-On | Oil filter | Amazon eBay $49.90 KuduParts $31.00 FridayParts $33.51 | |
| 1R0740 | Fuel, Spin-On | Fuel filter | Amazon eBay $13.99 | |
| 1R0749 | Filter fuel | 1 case (12 x 1 quart) | Fuel filter | Amazon Amazon eBay $135.88 eBay $135.88 NAPA $28.51 NAPA $28.51 KuduParts $17.00 FridayParts $47.50 |
| 1R0751 | Fuel Filter (secondary) | Fuel filter | Amazon Amazon eBay $20.19 eBay $48.88 NAPA $22.53 NAPA $22.53 KuduParts $36.00 FridayParts $37.23 | |
| 1R0762 | Filter fuel | Fuel filter | Amazon eBay $33.99 eBay $34.95 NAPA $43.65 FridayParts $30.63 | |
| 1R1807 | Oil Filter - Advanced Efficiency | Oil filter | Amazon eBay $34.23 NAPA $26.84 KuduParts $31.00 FridayParts $33.51 | |
| 1R1808 | Filter oil | Oil filter | Amazon eBay $141.00 eBay $59.99 NAPA $45.70 NAPA $45.70 KuduParts $80.00 FridayParts $81.99 | |
| 2017789 | Hydraulic, Spin-On | Hydraulic filter | Amazon eBay | |
| 2165039 | Air | Air filter | Amazon eBay FridayParts $78.99 | |
| 2165059 | Air, Primary | 1 | Air filter | Amazon eBay $94.99 FridayParts $93.39 |
| 2179784 | Lube, Cartridge | Oil filter | Amazon eBay $76.00 | |
| 2339823 | Air | Air filter | Amazon eBay $48.00 FridayParts $68.99 | |
| 234011080 | Fuel | Fuel filter | Amazon eBay | |
| 2390702 | Lube | Oil filter | Amazon eBay | |
| 246085 | Lube | 1 | Oil filter | Amazon eBay |
| 26540110 | Lube, Full Flow | Oil filter | Amazon eBay $8.46 KuduParts $18.00 | |
| 26540132 | Lube, Full Flow | Oil filter | Amazon eBay $19.99 | |
| 2654408 | Lube, Spin-On | 1 | Oil filter | Amazon eBay $19.70 NAPA $19.58 KuduParts $22.00 |
| 26560090 | Lube, Full Flow | Oil filter | Amazon eBay $19.48 | |
| 266787 | Air, Primary | 1 | Air filter | Amazon eBay $118.99 FridayParts $40.90 |
| 267953 | Air, Secondary | 1 | Air filter | Amazon eBay $36.99 FridayParts $45.99 |
| 26815 | Air | Air filter | buy | |
| 27407 | Air | Air filter | Amazon eBay FridayParts $110.64 | |
| 279245 | Air, Secondary | 1 | Air filter | Amazon eBay |
| 28043 | Coolant | Coolant filter | Amazon | |
| 28930 | Lube | Oil filter | Amazon eBay | |
| 29461 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay | |
| 29462 | Fuel, Spin-On | Fuel filter | buy | |
| 29463 | Fuel, Spin-On | Fuel filter | buy | |
| 30098 | Lube | Oil filter | eBay FridayParts $16.50 | |
| 303506819 | Lube | 1 | Oil filter | Amazon eBay $64.75 |
| 3044713 | Air | Air filter | Amazon eBay KuduParts $70.00 | |
| 309-0269 | Sender, Temperature-Lo Engine | 1 | Sensor | Amazon eBay $239.00 |
| 3214300100 | Compressor Air | Air filter | Amazon eBay KuduParts $63.00 | |
| 3214300300 | Air, Primary | Air filter | Amazon eBay $63.16 | |
| 3214300800 | Air, Primary | Air filter | Amazon eBay $102.44 FridayParts $53.99 | |
| 3214303600 | Air, Primary | Air filter | Amazon eBay $119.60 FridayParts $47.99 | |
| 3214304100 | Air, Primary | Air filter | Amazon eBay KuduParts $71.00 | |
| 3214305300 | Air, Secondary | Air filter | Amazon eBay FridayParts $18.99 | |
| 3214306500 | Air, Secondary | Air filter | Amazon eBay $99.99 KuduParts $19.00 | |
| 3214306800 | Air, Primary | Air filter | Amazon eBay $202.90 KuduParts $82.00 | |
| 3214308700 | Compressor Air | Air filter | Amazon eBay $99.99 | |
| 3290851 | Fuel, Cartridge | Fuel filter | Amazon eBay $8.00 | |
| 3304232 | Lube, By-Pass Spin-On | Oil filter | Amazon eBay $154.50 FridayParts $21.35 | |
| 3308638 | Fuel/Water Sep Spin-On | 1 | Fuel filter | Amazon eBay $22.00 |
| 3312097S | Service Gasket | 1 | Gasket | Amazon eBay |
| 3313281 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay $39.84 KuduParts $32.00 FridayParts $33.87 | |
| 3315116 | Cummins Part No. DCA4 Units | 4 | Coolant filter | Amazon eBay $45.60 |
| 3318853 | Combination Full-Flow/Bypass Lubricating Oil Filter | 1 | Oil filter | Amazon eBay $74.95 NAPA $66.59 |
| 3375049 | Oil Filter Wrench | 1 | Oil filter | Amazon eBay |
| 3376807 | Fuel filter | 1 | Fuel filter | Amazon eBay |
| 3377193 | Battery Tester | 1 | Battery tester | Amazon eBay |
| 3388840M2 | Cab Air | 1 | Air filter | Amazon eBay $55.99 |
| 3607790M1 | Hydraulic | 1 | Hydraulic filter | Amazon eBay $30.99 KuduParts $60.00 FridayParts $61.50 |
| 3621009M1 | Fuel | Fuel filter | Amazon eBay $14.90 FridayParts $26.90 | |
| 3621208 | B Connector DRC26-40SB-LO11 | Connector | Amazon eBay $74.95 | |
| 3632350M1 | Air, Secondary | Air filter | Amazon eBay | |
| 3633059M1 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay KuduParts $109.00 | |
| 3656990 | Connector Socket 0462-201-20141 | Connector | Amazon eBay $74.95 | |
| 3657034 | Cavity Plugs 0413-204-2005 | Connector | Amazon eBay $74.95 | |
| 3702815M1 | Fuel, Cartridge | 1 | Fuel filter | Amazon eBay $14.31 KuduParts $7.00 FridayParts $9.71 |
| 3757038M2 | Lube | 1 | Oil filter | Amazon eBay $31.30 |
| 3822524 | Use on v-belts ( 3/8 to 7/8) and v-ribbed belts with 5 ribs or less. | 1 | Belt | Amazon eBay |
| 3822525 | Use on v-beits larger than 7/8 in. and v-ribbed belts with 6 or more ribs. | 1 | Belt | Amazon eBay |
| 3822917 | Female 3822917 | 1 | Connector | Amazon eBay |
| 3823995 | Weatherpack Deutsch/Metri-Pac Male 3823993 | 1 | Connector | Amazon eBay |
| 3823996 | Weatherpack Deutsch/Metri-Pac Male 3823994 | 1 | Connector | Amazon eBay |
| 3824811 | Test lead for 9-pin Deutsch connector | 1 | Connector | Amazon eBay |
| 3824812 | Weatherpack Deutsch Female 3824811 | 1 | Connector | Amazon eBay |
| 3825183 | INSITE™ cable | Cable | Amazon eBay | |
| 3875827 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay $22.79 | |
| 3901475M1 | Relevage / Lift Kraftheber | 1 | Air filter | Amazon eBay $66.75 |
| 3901476M1 | Relevage / Lift Kraftheber | 1 | Air filter | Amazon eBay $45.99 KuduParts $48.00 FridayParts $49.99 |
| 3901477M1 | Relevage / Lift Kraftheber | 1 | Air filter | Amazon eBay $93.99 KuduParts $68.00 |
| 3901478M1 | Relevage / Lift Kraftheber | 1 | Air filter | Amazon eBay $16.00 |
| 3902287M1 | Hydraulic, Cartridge | 1 | Hydraulic filter | Amazon eBay |
| 3902782M1 | Air | 1 | Air filter | Amazon eBay |
| 3903224 | Lube, Full-Flow Spin-On | Oil | Amazon eBay $26.25 KuduParts $11.00 | |
| 3903640 | Fuel, Spin-On | Fuel filter | Amazon eBay $82.45 KuduParts $16.00 | |
| 3919562 | Fuel Coalescer | 1 | Fuel filter | Amazon eBay $125.99 KuduParts $48.00 FridayParts $49.99 |
| 3925274 | Fuel/Water Sep Spin-On | Fuel filter | Amazon eBay $15.99 | |
| 3937345 | Lube, Spin-On | 1 | Oil filter | Amazon eBay |
| 3991498 | Fuel/Water Separator | 1 | Fuel filter | Amazon eBay $33.12 |
| 4-25 | OIL PRES SENDER | Thermostat | Amazon eBay | |
| 4-26 | HIGH COOLANT TEMP | Sensor | Amazon eBay | |
| 4-27 | HIGH COOLANT TEMP | Sensor | Amazon eBay | |
| 4-28 | LOW COOLANT LVL | Sensor | Amazon eBay | |
| 4-33 | EEPROM ERROR Warning/Shutdown | Sensor | Amazon eBay | |
| 4024223 | Fuel/Water Sep. Cart. | 1 | Fuel filter | Amazon eBay $19.99 |
| 4024232 | FILTER, FUEL | 1 | Fuel filter | Amazon eBay $96.99 KuduParts $37.00 FridayParts $38.99 |
| 4035556 | Lube, Spin-On LF739 | Oil filter | Amazon eBay $18.00 | |
| 4037047 | Lube, Spin-On | Oil filter | Amazon eBay $29.99 FridayParts $30.60 | |
| 4055533 | Fuel, Cartridge | Fuel filter | Amazon eBay $14.50 | |
| 4059263 | Lube, By-Pass | Oil filter | Amazon eBay $98.56 | |
| 4144966 | Air, Secondary | 1 | Air filter | Amazon eBay $120.10 KuduParts $57.00 |
| 4197591A | Hydraulic | Hydraulic filter | Amazon eBay | |
| 4198305A | Lube | Oil filter | Amazon eBay $110.00 | |
| 4271467M1 | Air, Primary Magnum RS | 1 | Air filter | Amazon eBay $95.00 |
| 4271468M1 | Air, Secondary Magnum RS | 1 | Air filter | Amazon eBay $39.95 |
| 42919 | Hydraulic | Hydraulic filter | Amazon eBay | |
| 4305722 | Hydraulic | Hydraulic filter | Amazon eBay $35.97 | |
| 4319256 | Air, Secondary | Air filter | Amazon eBay $65.99 FridayParts $33.99 | |
| 4319257 | Air, Primary | Air filter | Amazon eBay FridayParts $179.99 | |
| 4357147 | Lube, By-Pass LF506 | Oil filter | Amazon eBay | |
| 4490296 | Fuel, Cartridge | Fuel filter | Amazon eBay KuduParts $10.00 | |
| 4502495 | Lube, Cartridge | Oil filter | Amazon eBay $35.00 | |
| 4613117 | Lube, Full Flow | Oil filter | Amazon eBay | |
| 466634 | Lube | Oil filter | Amazon eBay $29.00 KuduParts $31.00 | |
| 4666343 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay KuduParts $31.00 | |
| 466987 | Fuel | Fuel filter | Amazon eBay KuduParts $16.00 | |
| 4669875 | Fuel, Spin-On | Fuel filter | Amazon eBay $30.00 KuduParts $16.00 | |
| 4710349 | Lube | Oil filter | Amazon eBay | |
| 477556 | Lube | Oil filter | Amazon eBay $125.00 KuduParts $25.00 | |
| 4775565 | Lube | Oil filter | Amazon eBay $53.99 FridayParts $24.82 | |
| 47859749 | Lube | Oil filter | Amazon eBay | |
| 48458 | Fuel, Cartridge | Fuel filter | Amazon eBay KuduParts $10.00 | |
| 48495 | Lube, Spin-On | Oil filter | Amazon eBay | |
| 4897898 | Lube | 1 | Oil filter | Amazon eBay $49.99 FridayParts $24.73 |
| 4900294 | Oil Pressure Sensor | Oil pressure sensor | Amazon eBay $74.95 | |
| 492932 | Lube, Spin-On | Oil filter | Amazon eBay $7.90 FridayParts $18.99 | |
| 49400355 | Common Warning Circuit | Common warning circuit | Amazon eBay | |
| 49400356 | Sleeve Position Activator (integral to the RP39 fuel pump) | Sleeve position activator | Amazon eBay | |
| 49400361 | Common Alarm Circuit | Common alarm circuit | Amazon eBay | |
| 49931583 | Air | 1 | Air filter | Amazon eBay $14.00 |
| 501-0698 | Line, Flex Fuel (Fuel Out) | 1 | Hose | Amazon eBay |
| 501-0795 | Line, Flex Fuel (Fuel In) | 1 | Hose | Amazon eBay |
| 501-0839 | Line, Fuel - Flexible | 1 | Hose | Amazon eBay |
| 5016603M1 | Air | 1 | Air filter | Amazon eBay $138.88 KuduParts $76.00 |
| 5016604M1 | Air | 1 | Air filter | Amazon eBay $30.00 KuduParts $60.00 FridayParts $62.34 |
| 516180 | Fuel | Fuel filter | eBay | |
| 518-0548-24 | Clamp, Hose | 2 | Hose | Amazon eBay |
| 5205002 | Lube, Full-Flow Spin-On | Oil filter | Amazon eBay | |
| 5573013 | Lube, Full-Flow | Oil filter | Amazon eBay | |
| 5878100500 | Fuel | Fuel filter | Amazon eBay $29.99 | |
| 600377 | Lube, By-Pass | Oil filter | Amazon eBay | |
| 600393 | Fuel | Fuel filter | eBay | |
| 600709 | Coolant | Coolant filter | Amazon eBay | |
| 600717 | Lube | Oil filter | Amazon eBay | |
| 600776 | Lube, By-Pass Cartridge | Oil filter | eBay | |
| 602728 | Service Gasket | Gasket | Amazon eBay | |
| 602736 | Service Gasket | Gasket | Amazon eBay | |
| 603503 | Lube | Oil filter | Amazon eBay | |
| 604208 | Lube, Full-Flow Spin-On | Oil filter | buy | |
| 607071 | Lube, By-Pass | Oil filter | Amazon eBay | |
| 608990 | Lube | Oil filter | Amazon eBay | |
| 609374 | Air, Secondary | Air filter | Amazon eBay KuduParts $19.00 | |
| 609431 | Hydraulic, Spin-On | Hydraulic filter | Amazon eBay | |
| 609666 | Hydraulic, Spin-On | Hydraulic filter | Amazon eBay $19.95 | |
| 609934 | Hydraulic, Spin-On | Hydraulic filter | Amazon eBay | |
| 610114 | Hydraulic, Spin-On | Hydraulic filter | Amazon eBay | |
| 640780 | Hydraulic, Cartridge | Hydraulic filter | Amazon eBay | |
| 658126 | Lube, Full-Flow | Oil filter | Amazon eBay | |
| 663856 | Air, Primary | Air filter | Amazon eBay KuduParts $107.00 | |
| 669434 | Hydraulic, Cartridge | Hydraulic filter | Amazon eBay | |
| 6I2503 | Air, Magnum RS | 1 | Air filter | Amazon eBay $62.99 KuduParts $115.00 FridayParts $119.99 |
| 6N7617 | Fuel/Water Sep. Cart. | Fuel filter | Amazon eBay $22.49 | |
| 70013736 | Fuel, Secondary | 1 | Fuel filter | Amazon eBay FridayParts $39.99 |
| 700266 | Hydraulic | Hydraulic filter | Amazon eBay $48.99 KuduParts $30.99 | |
| 700274 | Air, Secondary | Air filter | Amazon eBay | |
| 700282 | Air, Primary | Air filter | Amazon | |
| 70048068 | Fuel, Primary | 1 | Fuel filter | Amazon eBay $15.69 |
| 70059897 | Fuel, Primary | Fuel filter | Amazon eBay | |
| 70059898 | Fuel, Cartridge FF103 | Fuel filter | Amazon eBay FridayParts $39.99 | |
| 700723604 | Hydraulic | 1 | Hydraulic filter | Amazon eBay $39.99 |
| 70079170 | Hydraulic | Hydraulic filter | Amazon eBay | |
| 70090824 | Lube, By-Pass | 1 | Oil filter | Amazon eBay |
| 70091540 | Lube | Oil filter | Amazon eBay $7.48 | |
| 70098441 | Hydraulic | Hydraulic filter | Amazon eBay | |
| 701165 | Air, Primary | Air filter | Amazon eBay | |
| 701734 | Hydraulic | Hydraulic filter | Amazon eBay | |
| 70185128 | Air | Air filter | Amazon eBay | |
| 70185824 | Air | 1 | Air filter | Amazon eBay |
| 70197588 | Air, Secondary | Air filter | Amazon eBay $96.00 FridayParts $28.99 | |
| 70197878 | Hydraulic | Hydraulic filter | Amazon eBay FridayParts $48.99 |
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% | 56.0 | 14.7 |
| Prime | 50% | 98.0 | 25.9 |
| Prime | 75% | 137.0 | 36.3 |
| Prime | 100% | 185.0 | 49.0 |
| Standby | 25% | 61.0 | 16.0 |
| Standby | 50% | 99.0 | 26.2 |
| Standby | 75% | 153.0 | 40.5 |
| Standby | 100% | 207.0 | 54.7 |
Available documents
Spec sheet — Cummins-750-DFHA (Cummins/Onan)Spec sheet — Cummins-750DFHA-QST30-G2-spec-sheet (Cummins/Onan)Operator's manual — Cummins-DFHA-DFHB-DFHC-DFHD-operator-manual (Cummins/Onan)Parts manual — 0932-0112 Onan Post-Sale Literature Index (07-1998) (Cummins/Onan)Parts manual — 0960-0241 I10 201409 (Cummins/Onan)Parts manual — 0961-0205 I10 201608 (Cummins/Onan)Parts manual — 960-0241C Onan DFHA DFHB DFHC DFHD Parts Manual (12-1999) (Cummins/Onan)Service manual — 04vQST30 (Cummins/Onan)Service manual — 900-0520 Onan DFHA DFHB DFHC DFHD (spec A-J) Genset Operators manual (10-2011) (Cummins/Onan)Service manual — 960-0509C Cummins DFHA DFHB DFHC DFHD Service Manual (10-2001) (Cummins/Onan)Service manual — 960-0617E Cummins DFHA DFHB DFHC DFHD Installation Manual (10-2002) (Cummins/Onan)Service manual — Cummins-DFHA-DFHB-DFHC-DFHD-spec-A-thru-J-service-manual-QST30-engine-with-PowerCommand-3.1-control (Cummins/Onan)
This page was generated from the 12 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.