Overview
The Nuffield DM-4 is a 2WD utility tractor produced between 1950 and 1961, powered by a Perkins 3.2L 4-cylinder liquid-cooled diesel engine. The machine features a 5-speed gear transmission, independent mechanical contracting band brakes, and a Type I rear hitch. It is listed with an operating weight of 4,545 lbs and was factory-rated at 45 hp for belt pulley output at 2000 RPM.
Ideal Applications
Perkins Diesel Engine Performance:
The 192.2 ci engine operates with a 22:1 compression ratio and is equipped with an oil bath air cleaner and a 12V starter to produce a claimed 40.5 hp at the drawbar.
Transmission and Drive Layout:
The mechanical configuration includes a 5-speed gear transmission with five forward gears and one reverse, paired with spur gear final drives and a flange rear axle.
Chassis and Hitch Specifications:
This model features an open operator station and a Type I rear hitch, supported by 6.00x16 front tires and 11.00x36 rear agricultural tires on a 4,545 lb chassis.
Production
| Description | Utility tractor |
|---|---|
| Manufacturer | Nuffield |
Engine
| Engine type | Perkins 3.2L 4-cyl diesel |
|---|---|
| Air cleaner | oil bath |
| Bore/Stroke | 3.50x5.00 inches (89 x 127 mm) |
| Compression | 22:1 |
| Description | Perkins P4TA / diesel / 4-cylinder / liquid-cooled |
| Displacement | 192.2 ci (3.2 L) |
| Rated RPM | 2000 |
| Starter volts | 12 |
| Belt (claimed) | 45 hp (33.6 kW) |
| Drawbar (claimed) | 40.5 hp (30.2 kW) |
Transmission
| Gears | 5 forward and 1 reverse |
|---|---|
| Transmission type | 5-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Independent mechanical contracting band brakes |
| Drive type | Two-wheel drive |
| Final drives | spur gear |
Hitch
| Rear Type | I |
|---|
Dimensions & Tires
| Description | Flange rear axle |
|---|---|
| Operating weight | 4545 lbs (2061 kg) |
| Front tire | 6.00x16 |
| Rear tire | 11.00x36 |
| Weight | 4545 lbs (2061 kg) |
| Ag front | 6.00x16 |
| Ag rear | 11.00x36 |