To make it easier for you to choose the right manual, we have compiled various information for you below, such as model designations, types, and production years.
This manual is applicable to the following models: 900-0519D / Cummins Inc
DFAA
DFAB
DFAC
DFBC
DFBD
DFBF
DFCB
DFCC
DFCE
DFEB
DFEC
DFED
DFFA
DFFB
DFGA
DFGB
DFGC
DFJA
DFJB
DFJC
DFJD
DFLA
DFLB
DFLC
DFLD
DFLE
DFMB
DQAA
DQAB
DQBA
DQBB
Serial numbers:
A030M759
A030M761
A030M762
A030M763
A030M764
A030M765
A030M766
A030M767
A030M768
A030M769
A030M770
A030M771
A030M772
A030M773
A030M774
A030M775
A030M776
A030M777
A030M778
A030M779
A030M780
A030M781
A030M782
A030M783
A030M784
A030M785
A030M786
A030M787
A030M788
A030M789
A030M790
A030M791
A030M792
A030M793
A030M794
A030M795
A030M796
A030M797
A030M798
A030M799
A030N001
Number of pages: 227
Language: English
Printable: Yes (all printers)
Instant delivery: Your download link will appear on the checkout page after your payment is complete.
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"Download the Original Service Manual for Your Onan Genset Generator!"
Here are the specifications for the Cummins generators:
DFAA
• Power Rating: 50 kW (62.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 4BT3.9-G4
DFAB
• Power Rating: 60 kW (75 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 4BTA3.9-G4
DFAC
• Power Rating: 80 kW (100 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 4BTA3.9-G11
DFBC
• Power Rating: 100 kW (125 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 4BTA3.9-G11DFBD
• Power Rating: 100 kW (125 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 4BT3.9-G6
DFBF
• Power Rating: 150 kW (187.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6BT5.9-G2
DFCB
• Power Rating: 200 kW (250 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6BT5.9-G2
DFCC
• Power Rating: 200 kW (250 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6BT5.9-G2
DFCE
• Power Rating: 250 kW (312.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6BTA5.9-G2
DFEB
• Power Rating: 300 kW (375 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6CTA8.3-G2
DFEC
• Power Rating: 350 kW (437.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6CTA8.3-G2
DFED
• Power Rating: 400 kW (500 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: 6CTAA8.
DFFA
• Power Rating: 450 kW (562.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: NT855-GA
DFFB
• Power Rating: 500 kW (625 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: NT855-GA
DFGA
• Power Rating: 600 kW (750 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KT19-GA
DFGB
• Power Rating: 650 kW (812.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KT19-GA
DFGC
• Power Rating: 750 kW (937.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KT19-GA
DFJA
• Power Rating: 800 kW (1000 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KTA38-G2
DFJB
• Power Rating: 900 kW (1125 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KTA38-G2
DFJC
• Power Rating: 1000 kW (1250 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KTA38-G2A
DFJD
• Power Rating: 1250 kW (1562.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KTA50-G3
DFLA
• Power Rating: 1500 kW (1875 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: KTA50-G8
DFLB
• Power Rating: 1750 kW (2187.5 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: QSK60-G4
DFLC
• Power Rating: 2000 kW (2500 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: QSK60-G4
DFLE
• Power Rating: 2500 kW (3125 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
• Phase: 3
• Engine Model: QSK78-G7
DFMB
• Power Rating: 3000 kW (3750 kVA)
• Frequency: 60 Hz
• Voltage: 120/208V, 139/240V, 277/480V
Phase: 3
• Engine Model: QSK78-G7
DQAA
• Power Rating: 7.5 kW (9.4 kVA)
• Frequency: 60 Hz
• Voltage: 120/240V
• Phase: 1
• Engine Model: QSJ999G
DQAB
• Power Rating: 13.5 kW (16.9 kVA)
• Frequency: 60 Hz
• Voltage: 120/240V
• Phase: 1
• Engine Model: QSJ999G
DQBA
• Power Rating: 20 kW (25 kVA)
• Frequency: 60 Hz
• Voltage: 120/240V
• Phase: 1
• Engine Model: QSB7-G3
DQBB
• Power Rating: 27 kW (33.8 kVA)
• Frequency: 60 Hz
• Voltage: 120/240V
• Phase: 1
• Engine Model: QSB7-G3
Maintenance Intervals, Tips, and Common Issues:
The Cummins Onan Genset series, particularly the 900-0519D, is renowned for its reliability and efficiency. However, like any mechanical device, regular maintenance is essential to ensure optimal performance.
Maintenance Tips:
► Regular Inspections: Check for wear and tear, loose connections, or corroded parts.
► Clean Air Filter: Replace or clean the air filter regularly to ensure proper air intake.
► Oil Change: Depending on usage, change the oil after every 50 to 100 hours of operation.
► Check Fuel Lines: Ensure there are no cracks, and the fuel filter is clean.
► Cooling System: Ensure the cooling system is free of obstructions and working effectively.
Tuning Tips or Modifications:
* Upgraded Air Filters: Higher performance air filters can improve efficiency.
* Voltage Regulator: Upgrading to a more efficient voltage regulator can improve power output.
* Muffler Upgrades: Enhanced mufflers can reduce operational noise.
* Fuel System Optimizers: These can help in smoother fuel flow and increased performance.
Accessories and Attachments:
■ Remote start kits.
■ Extended runtime fuel tanks.
■ Cold weather kits for smoother winter operation.
■ Protective covers.
■ Transfer switches.
■ Hour meters.
■ Vibration mounts.
■ Mobile link setups for remote monitoring.
Owner Reviews:
Strengths:
☺ Consistent power output.
☺ Reliable operation with minimal downtimes.
☺ Efficient fuel consumption.
Weaknesses:
☻ Some users report it being a bit noisy.
☻ Certain parts may be expensive to replace.
Common Repairs & Parts that Often Break:
→ Regular spark plug replacements.
→ Air filter changes.
→ Fuel filter replacements.
→ Voltage regulator issues.
→ Carburetor cleaning or replacements.
→ Belt replacements.
→ Battery charging or replacements.
→ Oil filter changes.
→ Starter motor replacements.
→ Exhaust system check-ups.
Before starting any service or repair, it's imperative to consult the official manual provided by Cummins Inc. Grab your copy here!.
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