David Brown · 25 Series series
David Brown 25D
Utility tractor · 1953–1958 · Diesel
The David Brown 25D was the diesel version of David Brown's 25 Series, built at Meltham Mills from 1953 to 1958 and powered by the firm's own AD4/25 four-cylinder diesel engine. Successor to the Cropmaster, it was a light-to-mid-size utility tractor aimed at the general-purpose British farm market. A petrol/TVO version (the 25C) was offered alongside it.
- gross power
- 31.3 hp
- Displacement
- 154 ci (2.5 L)
Specifications
| Type | Utility |
|---|---|
| Series | 25 Series |
| Production | 1953–1958 |
| Factory | Meltham Mills, Huddersfield, England |
| Make | David Brown |
|---|---|
| Model | AD4/25 |
| Fuel | Diesel |
| Cylinders | 4 |
| Displacement | 154 ci (2.5 L) |
| Bore × stroke | 3.50x4.00 in |
| Rated speed | 1,800 rpm |
| Cooling | liquid-cooled |
| Aspiration | Naturally aspirated |
| Engine (gross) | 31.3 hp (23.3 kW) |
|---|
| Transmission | sliding gear — 6 forward, 2 reverse |
|---|---|
| Chassis | 4x2 2WD |
| Steering | manual |
| Rear PTO | transmission |
|---|---|
| PTO speed | 540 rpm |
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