Rolls-Royce M250 HMU Overhaul, Repair & Exchange
Triumph-authorized repair, overhaul, testing and exchange support for Rolls-Royce M250 hydromechanical units (HMUs) supporting Bell 407, Bell 430 and MD 600 operators.
Southwest Fuel Systems provides maintenance, repair, overhaul, testing and exchange support for Triumph-manufactured Rolls-Royce M250 HMUs. From our FAA/EASA Part 145 facility in Stroud, Oklahoma, we support helicopter operators, MRO facilities and fleet customers worldwide with OEM-authorized HMU service and dedicated M250 fuel-system expertise. SouthWest Fuel Systems is one of only two Triumph-authorized M250 HMU service providers worldwide.
As a Triumph Authorized Service Center, Southwest Fuel Systems maintains dedicated M250 HMU capability, including a Triumph EMC-35A correlated test bench, supporting applicable M250-C40B and M250-C47B engine installations, including Bell 407 applications.
M250 HMU capabilities include:
- HMU overhaul
- HMU repair
- Exchange units
- Functional testing
- Service Bulletin compliance
- Troubleshooting and technical support
- AOG support
Need an M250 HMU overhaul or exchange?
Supported Rolls-Royce M250 HMU Part Numbers
Southwest Fuel Systems supports the following Rolls-Royce and corresponding Triumph HMU part numbers:
ROLLS-ROYCE PART NUMBER |
TRIUMPH PART NUMBER |
|---|---|
| 23057878/23057879 | 113200-01A1 |
| 23064100 | 113200-01A2 |
| 23057880 | 113200-02A2 |
| 23057883 | 113200-02C2 |
| 23068653 | 113200-02C3 |
| 23069550 | 113200-02C4 |
| 23072207 | 113200-03C4 |
| 23072732 | 113200-03C6 |
| 23075392 | 113200-04A1 |
| 23078033 | 113200-04A5 |
| M250-10152 | 113200-04B5 |
| 23072726 | 113200-03C5 |
| 23075496 | 113200-03C7 |
| 23078035 | 113200-03C10 |
| 23078056 | 113200-03C8 |
| 23067961 | 114070-01A1 |
| 23068651 | 114070-01A |
| 23069251 | 114070-01A3 |
| 23069551 | 114070-01A4 |
| 23070726 | 114375-01A1 |
| 23072208 | 114070-03A4 |
| 23072731 | 114070-03A6 |
| 23075390 | 114070-04A1 |
| 23078029 | 114070-04A5 |
| M250-10151 | 114070-04B5 |
| M250-10239 | 114070-04B6 |
| M250-10136 | 114070-04A6 |
| 23072725 | 114070-03A5 |
| 23078029 | 114070-04A4 |
| 23078030 | 114070-03A10 |
| 23078031 | 114070-03A12 |
| 23078032 | 114070-03A9 |
| 23078033 | 113200-04A4 |
Bell 407 HMU Overhaul & Exchange Support
Southwest Fuel Systems supports applicable Rolls-Royce M250-C47B HMUs used in Bell 407 applications, providing overhaul, repair, testing and exchange support for operators planning scheduled HMU events or responding to unscheduled removals. The Bell 407 maintenance documentation references the M250-C47B HMU installation.
Operating a Bell 407? Send us your HMU part number, serial number and current condition for availability and quotation.
About the Triumph M250 HMU
The hydromechanical unit is a critical component of the Rolls-Royce M250 FADEC fuel-control system. Working with the Electronic Control Unit (ECU), the HMU meters and supplies fuel to the engine in response to FADEC commands.
Southwest Fuel Systems specializes in the overhaul and repair of applicable Triumph EMC-35A hydromechanical units for the Rolls-Royce M250-C40B and M250-C47B engine families. Our in-house capability allows operators to send their HMU directly to a facility specializing in turbine-engine fuel controls and accessories.