The Cummins/Onan VT1710-P635 is a 27.84 L 12-cylinder engine rated at 1800 rpm, producing up to 409.48 kW. It powers generator sets from Cummins/Onan, including the DFU series. It holds 21 L (5.5 gal) of oil and 35 L (9.2 gal) of coolant.
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | service frequently | | — | | |
| Fuel filter | filter or strain fuel when filling tank | | — | | |
| Oil filter | | | — | 1000 hr | |
| Battery | service as necessary, connect in series for normal installation | | — | | |
| Belt | | | — | 1000 hr | |
| Coolant | fill before starting, check level several times and replenish if necessary | 42.0 gallons | — | | |
| Oil | drained prior to shipment, fill to capacities shown | 18.0 gallons | — | | |
| Spark plug | | | — | | |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Parts cataloged across the Cummins/Onan VT1710 family
61| Part # | Description | Category |
|---|
| 130-0465 | Brace | Brace |
| 130-0466 | Brace | Brace |
| 110-1168 | Bracket & Nipple Assembly | Bracket nipple |
| 505-0207 | Bushing, Reducer (2-1/2 x 2") | Bushing reducer |
| 505-0270 | Bushing, Reducer (2 x 1-1/4") | Bushing reducer |
| 503-0011 | Clamp | Clamp |
| 503-0059 | Clamp | Clamp |
| 503-0518 | Clamp | Clamp |
| 330-0004 | Cover, Box | Cover box |
| 505-0719 | Cross, Pipe (1") | Cross pipe |
| 505-0453 | Elbow (90° ) | Elbow 90 |
| 505-0175 | Elbow | Elbow pipe |
| 505-0216 | Elbow! Street (90°) | Elbow street |
| 130-0740 | Flange Assembly | Flange assembly |
| 503-0008 | Grommet (1/2" I.D. x 1-1/16" O.D.) | Grommet |
| 503-0249 | Hose − Bulk (Order by the Foot − 3 Feet Required) | Hose |
| 503-0359 | Hose (1-5/8" I.D. x 3 ' )' | Hose |
| 503-0365 | Clamp, Hose | Hose |
| 503-0429 | Clamp, Hose | Hose |
| 503-0512 | Hose (2-7/8" I.D. x 18" ) | Hose |
| 503-0569 | Hose (3−1/2” ID) Bulk (Order By The Foot − 2 Feet Required) | Hose |
| 505-0172 | Nipple, Close (2 x 2") | Hose |
| 505-0173 | Nipple (2 x 4") | Nipple |
| 505-0328 | Nipple ( 3 x 6 " ) | Nipple |
| 505-0419 | Nipple (2 x 12") | Nipple |
| 505-0604 | Nipple (3 x 9-3/4" ) | Nipple |
| 505-0615 | Nipple (3 x 24" ) | Nipple |
| 505-0178 | Nipple, Half | Nipple half |
| 505-0380 | Nipple, Half (2 x 3") | Nipple half |
| 505-0437 | Nipple, Half (1-1/4 x 4") | Nipple half |
| 130-0687 | Standpipe | Service part / kit |
| 307-0839 | Valve, Solenoid | Service part / kit |
| 307-0844 | Valve, Solenoid | Service part / kit |
| 309-0243 | Valve, Control - Temperature Regulating | Service part / kit |
| 331-0027 | Clamp, Junction Box - Spec A through G | Service part / kit |
| 333-0138 | Heater, Electrical - Coolant, 4000 Watt, 240 VAC - 1 Phase (Kim Type) | Service part / kit |
| 504-0006 | Cock, Drain - Exhaust Manifold (1/8” Pipe) | Service part / kit |
| 504-0062 | Valve, Relief | Service part / kit |
| 505-0042 | Elbow, 90° (1-1/2") | Service part / kit |
| 505-0057 | Plug, Square Head (1/8') | Service part / kit |
| 505-0086 | Nipple (4 x 2-1/2"}, Exhaust 850-0030 2 Air Inlet Mounting (#10) | Service part / kit |
| 505-0099 | Nipple, Pipe (1/4 x .88) | Service part / kit |
| 505-0258 | Nipple (1-1/4 x 3") | Service part / kit |
| 505-0669 | Tee | Service part / kit |
| 505-0679 | Nipple (3 x 12" ) | Service part / kit |
| 800-0006 | Screw, Cap - Hex Head (1/4-20 × 7/8") | Service part / kit |
| 800-0007 | Plug, Oil Drain | Service part / kit |
| 800-0091 | Part 800-0091 | Service part / kit |
| 800-0092 | Screw, Cap - Hex Head (1/2-13 x 1.5) | Service part / kit |
| 813-0103 | Screw, Machine - Round Head (#10-32 x 3/4º) | Service part / kit |
| 850-0040 | Washer, Lock - Spring (1/4") | Service part / kit |
| 850-0060 | Screw, Cap - Hex Head (5/16-18 X 7-1/2" ) | Service part / kit |
| 862-0001 | Nut, Hex (1/4-20) | Service part / kit |
| 862-0005 | Nut (1/2-13) | Service part / kit |
| 870-0053 | Nut, Hex (s10-32) | Service part / kit |
| B184 | PHASE SELECTOR SWITCH | Service part / kit |
| 330-0005 | Box, Outlet | Outlet box |
| 179-0341 | Solenoid Valve Installation | Solenoid valve |
| 130-0897 | Support | Support |
| 309-0253 | Thermostat | Thermostat |
| 130-0801 | Nipple Assembly, Waterline | Waterline nipple |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Common questions
What is the oil capacity of the Cummins/Onan VT1710-P635?
The Cummins/Onan VT1710-P635 engine has an oil capacity of 21.0 liters.
What is the displacement of the Cummins/Onan VT1710-P635?
The Cummins/Onan VT1710-P635 has a displacement of 27.84 liters with 12 cylinders.
Which generators use the Cummins/Onan VT1710-P635 engine?
The Cummins/Onan VT1710-P635 powers 1 generator set(s), including Cummins/Onan DFU series.
What is a common problem with the Cummins/Onan VT1710-P635 engine?
A commonly reported issue on generators using the Cummins/Onan VT1710-P635 is: Fault lamp lights after engine is running. Cause: Oil level — engine will shut down after approximately 12-1/2 seconds if low oil pressure sensor does not open.