Service parts for the DYC Series
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Voltage options | 120/240 V, 347/600 V |
| Phase | Single Phase,3 Phase, Delta,3 Phase, Wye |
| Coolant capacity | 34.05 L |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 1000 hr | |||
| Fuel filter | Fuel Filter | B400-6 | Amazon eBay | ||
| Oil filter | — | 1000 hr | |||
| Battery | — | 1000 hr | |||
| Belt | — | 1800 hr | |||
| Coolant | — | 1000 hr | |||
| Oil | — | ||||
| Spark plug | — | 1000 hr |
Common questions
What fuel filter does the Cummins/Onan DYC Series use?
The Cummins/Onan DYC Series uses fuel filter part number B400-6.
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds. | See engine service manual for troubleshooting fuel system. After correcting problem, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset, then back to the required running position. |
| Fault lamp lights immediately after engine starts. | Check for: Overspeed condition as engine starts. |
| Fault lamp lights and engine shuts down after running for a period. | Check the following: a. Oil level. Engine will shut down if sensor is closed. b. Check engine manual for troubleshooting oil system. c. High engine temperature. Check coolant level; check water flow (city water cooled systems); check radiator for free air flow, and fan belts for tightness. See engine manual for troubleshooting cooling system. d. Check for faulty oil pressure sensor or faulty high engine temperature sensor. |
| Engine runs, shuts down and cranks for 75 seconds. Cranking cycle stops; fault lamp lights. | Check fuel supply. |
| Fault lamp lights, no fault exists. | To check a no fault condition, disconnect leads from TB11 terminals 29, 30 and 31. If fault lamp lights with leads disconnected, replace engine monitor board. Reconnect leads. |
| Overcrank fault lamp lights and engine stops cranking after approximately 75 seconds. | See engine service manual for troubleshooting fuel system. After correcting fault, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset position, depressing Reset button, then to the required running position. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan DYC Series troubleshooting guide (13 entries) →
Parts
3| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 841-1 | Drain | 1 | Drain | Amazon eBay |
| B400-6 | Fuel Filter | 1 | Fuel filter | Amazon eBay |
| M-1189 | ENGINE HEATER | Service part / kit | Amazon eBay |
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.
Available documents
Service manual — manualsplus 10497 (Cummins/Onan)