Single-engine locomotive equipped with a torque converter and an Asynchro gearbox which drives via cardan shafts the reversing axles mounted on one of the axles of each bogie. The second axle is driven by the first axle via connecting rods
The originality of this locomotive was the presence of a converter between the diesel and the Asynchro gearbox, whereas on all other machines equipped with this type of gearbox a coupler was available. This allowed the use of a gearbox with only 4 gears, the first gear going up to 19 km/h in converter mode and up to 26 km/h in lock-up mode with which the converter was equipped.
| Features | Values |
| Total weight | 50 tons |
| Longueur | 11740 |
| Bogie pivot spacing | 5550 |
| Bogie wheelbase | 2000 |
| Wheel diameter | 860 |
| Minimum curved rail | 60 metres |
| Maximum speed | 66 kph |
| Effort to the rim | tons|
| Diesel Poyaud A12150 | 355 kw |
| Asynchro CFD | A 4-speed gearbox |
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