Introduction
Nuffield M4 Row-Crop Tractor
The Nuffield M4 is a row-crop tractor manufactured in Birmingham, England, between 1948 and 1961. Designed for general agricultural duties, this two-wheel drive machine represents a standard model of its era, characterized by a robust mechanical construction and an open operator station.
Engine and Performance
The tractor is powered by a 3.8-liter, four-cylinder liquid-cooled engine, identified as a TVO (Tractor Vaporizing Oil) unit. It produces 38 horsepower at a rated engine speed of 2000 RPM, with a maximum torque of 138 lb-ft at 1000 RPM. The engine cooling system has a capacity of 18.2 liters, and the lubrication system requires 7.4 liters of oil.
Transmission and Drivetrain
Power is transferred through a mechanical gear transmission featuring five forward speeds and one reverse speed. The drivetrain includes a 280mm dry disc mechanical clutch. The tractor is equipped with a rear power take-off (PTO) shaft operating at a standard 540 RPM, engaged via the transmission.
Hydraulics and Hitch
The hydraulic system utilizes an open-center configuration operating at a pressure of 1000 psi (69.0 bar). At the rear, the tractor features a Category I three-point hitch with a lift capacity of 3700 lbs (1678 kg), allowing for the attachment of various mounted implements.
Dimensions and Handling
With a wheelbase of 198 cm and an operating weight of 2216 kg, the Nuffield M4 offers a stable platform for row-crop operations. It uses manual steering and mechanical drum brakes. The front tread is adjustable from 121 to 193 cm, while the rear tread ranges from 134 to 223 cm, accommodating different row spacings.
Conclusion
The Nuffield M4 is a utility-focused tractor designed for durability and ease of maintenance. Its mechanical simplicity, combined with a standard Category I hitch and 540 RPM PTO, makes it a suitable machine for traditional farming tasks that do not require modern electronic assistance.
Production Information of Nuffield, M4
- Row-Crop tractor
- Built in Birmingham, England
| Manufacturer | Nuffield |
|---|
Dimension and Tires Information of Nuffield, M4
| Clearance (front axle) | 18 inches [45 cm] |
|---|---|
| Wheelbase | 78 inches [198 cm] |
| Height (exhaust) | 82 inches [208 cm] |
| Height (hood) | 60.5 inches [153 cm] |
| Length | 123 inches [312 cm] |
| Clearance (rear axle) | 23 inches [58 cm] |
| Operating weight | 4886 lbs [2216 kg] |
| Width | 83 inches [210 cm] |
| Rear tread | 53 to 88 inches [134 to 223 cm] |
| Front tread | 48 to 76 inches [121 to 193 cm] |
Width at rear axles.
| Ag front | 6.00-19 |
|---|---|
| Ag rear | 11.00-36 |
| Ag rear | 9.00-36 |
Engine Specifications of Nuffield, M4
- Morris
- Liquid-cooled
- Tvo
- 4-cylinder
| Coolant capacity | 19.2 qts [18.2 L] |
|---|---|
| Air cleaner | Oil bath |
| Rated RPM | 2000 |
| Torque | 138 lb-ft [187.1 Nm] |
| Idle RPM | 600-2000 |
| Displacement | 230.1 ci [3.8 L] |
| Power | 38 hp [28.3 kW] |
| Bore/Stroke | 3.94x4.72 inches [100 x 120 mm] |
| Oil capacity | 7.8 qts [7.4 L] |
| Starter volts | 12 |
| Torque RPM | 1000 |
Transmission Information of Nuffield, M4
Transmission variants 1
| Type | Gear |
|---|---|
| Oil capacity | 50.4 qts [47.7 L] |
| Gears | 5 forward and 1 reverse |
| Clutch | 280mm mechanical dry disc |
Mechanical Specs of Nuffield, M4
- Two-wheel drive
- Open operator station.
- Manual steering
- Mechanical drum brakes
Power Information of Nuffield, M4
| Rear PTO | Transmission |
|---|---|
| Rear PTO Type | 540 (1.375) |
| Engine RPM | 527@1400 |
Hydraulics Specifications of Nuffield, M4
| Type | Open center |
|---|---|
| Pressure | 1000 psi [69.0 bar] |
Three-Point Hitch of Nuffield, M4
| Rear Type | I |
|---|---|
| Rear lift | 3700 lbs [1678 kg] |
Where it sits
With 38 HP, the Nuffield M4 sits between Universal 3 (34 HP) and PM-4 (40 HP) in Nuffield's range. Its power puts it in the 58th percentile of 1940s models in our database (263 machines).
Frequently asked questions
How much horsepower does the Nuffield M4 have?
The Nuffield M4 delivers 38 HP.
What years was the Nuffield M4 produced?
The Nuffield M4 was produced in 1948-1961.
What engine does the Nuffield M4 have?
The Nuffield M4 is powered by a 4-cylinder engine.
What transmission does the Nuffield M4 use?
The Nuffield M4 uses a Gear transmission.
How much does the Nuffield M4 weigh?
The Nuffield M4 weighs 4886 lbs [2216 kg].
Is the Nuffield M4 4WD?
The Nuffield M4 is available in 2WD.