Service parts for the 30MDEH-9R
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Alternator | Magniciter |
| Voltage options | 600 V |
| Phase | 3 |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Cleaner Stop Sol. Plunger Spring | 140P969 | Amazon eBay | ||
| Fuel filter | 149P846 | Amazon eBay $39.88 |
Common questions
What voltages is the Cummins/Onan 30MDEH-9R available in?
The Cummins/Onan 30MDEH-9R is offered in 600 V, 3-phase.
Which alternator is fitted to the Cummins/Onan 30MDEH-9R?
The Cummins/Onan 30MDEH-9R uses a Magniciter alternator.
Which fuel filter part number does the Cummins/Onan 30MDEH-9R take?
The Cummins/Onan 30MDEH-9R uses fuel filter part number 149P846.
Which air filter part number does the Cummins/Onan 30MDEH-9R take?
The Cummins/Onan 30MDEH-9R uses air filter part number 140P969.
Parts
43| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140P969 | Air Cleaner Stop Sol. Plunger Spring | 16 | Air filter | Amazon eBay |
| 149CI078 | Filter, Fuel - Primary | Fuel filter | Amazon eBay | |
| 150A638 | Joint, Ball - Fuel Shut-Off | 2 | Joint ball | Amazon eBay |
| 1936107 | Gage, Oil Pressure | Pressure gauge | Amazon eBay | |
| 193t3i06 | Gage, Water Temp. | Temperature gauge | Amazon eBay | |
| 232A1546 | Insulation | 2 | Insulation | Amazon eBay |
| 232A1548 | Gasket, Control Reactor Coil Mtg. | 2 | Gasket | Amazon eBay |
| 234B60 | Rectifier Assy., Includes Parts Marked* | Rectifier | Amazon eBay | |
| 234C174 | Scroll, Air End Drive Assy. | Air filter | Amazon eBay | |
| 234C175 | Scroll, Air End Drive Assy. | Air filter | Amazon eBay | |
| 234C176 | Scroll, Air End Drive Assy. | Air filter | Amazon eBay | |
| 304A192 | Resistor, Fixed (3-Ohm, 10-W) | 1 | Resistor | Amazon eBay |
| 305B202 | Rectifier Assy., Includes Parts Marked* | 1 | Rectifier | Amazon eBay |
| 307P8/9 | Limiter, Cranking | 2 | Limiter | buy |
| 312.458 | Condenser Line, Fuel Pump to Primary | Hose | buy | |
| 3388237 | Wiring Harness | Wiring harness | Amazon eBay | |
| 518-203 | Hose, Breather Retg. | Hose | Amazon eBay | |
| SCM-29 | Reactor, Voltage Control | Voltage control reactor | Amazon eBay | |
| 140AIO07 | Ring, Snap Sprg. Ret. | Service part / kit | Amazon eBay | |
| 149P846 | Tee, Secondary Filter Coupling Fuel | Service part / kit | Amazon eBay $39.88 | |
| 150Ai39 | Lever, Gov. Stop | Service part / kit | Amazon eBay | |
| 150B733 | Stud & Contact Point AssY. Voltage Control Reactor Mtg. | Service part / kit | Amazon eBay | |
| 191A516 | Cover, Starter Motor Filter | Service part / kit | Amazon eBay | |
| 205B68 | Blower | Service part / kit | Amazon eBay | |
| 211E131 | Blower | Service part / kit | Amazon eBay | |
| 232A1474 | Spacer | 2 | Service part / kit | Amazon eBay |
| 234B62 | Stud, Gate Reactor to Stud | Service part / kit | Amazon eBay | |
| 23A1037 | Pin, Roll | 1/8 x 1/2’ - Sprg. | Service part / kit | Amazon eBay |
| 30182919 | Cover, Control Box | Service part / kit | Amazon eBay | |
| 301A2678 | Box Only, Control Bracket, Cranking Limiter | 2 | Service part / kit | Amazon eBay |
| 301C2920 | Bracket, Cent. Box Mtg., Mounting 402-78 | Service part / kit | Amazon eBay | |
| 301D2918 | Box Only, Control Bracket, Cranking Limiter | Service part / kit | Amazon eBay | |
| 302A6 | Strap, Ground Ammeter Charge (310-O-30) | 1 | Service part / kit | Amazon eBay |
| 306A125 | Rod, Stop Sol. to Joint | 1 | Service part / kit | Amazon eBay |
| 306Ai98 | Spring, Stop Sol. Plungef | Service part / kit | Amazon eBay | |
| 315A74 | Block, Terminal - Voit. Cont. Reactor Mtg. | Service part / kit | Amazon eBay | |
| 338C457 | Harness, Engine Cont. | Service part / kit | Amazon eBay | |
| 3IOP63 | Winding Band, Generator - Front (Narrow) | Service part / kit | Amazon eBay | |
| 508-1s | Fibre Washer (1/4 x 3/8 x 1/32”) | Service part / kit | Amazon eBay | |
| 508-63 | Cover, Lead | 1 | Service part / kit | Amazon eBay |
| 520A579 | Fibre Washer (1/4 x 3/4 x 1/16”) | Service part / kit | Amazon eBay | |
| i9iC683 | Regulator Charge Air | Service part / kit | Amazon eBay | |
| sIOP63 | Winding Band, Generator - Front (Narrow) | 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
Parts manual — 976-0305 Onan MDEH (spec A) Marine Diesel Genset Parts manual section only (04-1968) (Cummins/Onan)
This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.