Overview
The Nuffield Universal M4 is a wide-front row-crop tractor produced in Birmingham, England, between 1948 and 1961. It features a Morris 3.8L 4-cylinder TVO liquid-cooled engine rated at 38 hp and equipped with a 5-speed gear transmission.
Ideal Applications
Engine and Power Ratings:
The Morris 3.8L engine produces 138 lb-ft of torque at 1000 RPM and is rated for a claimed 32.5 hp at the belt and 25.4 hp at the drawbar.
Physical Dimensions and Weight:
The unit has an operating weight of 4886 lbs, a 78-inch wheelbase, and adjustable rear tread widths ranging from 53 to 88 inches.
Mechanical and Hydraulic Systems:
Equipped with an open center hydraulic system operating at 1000 psi, the tractor provides a rear lift capacity of 3700 lbs on a Type I hitch.
Production
| Description | Row-Crop tractor / Built in Birmingham, England |
|---|---|
| Manufacturer | Nuffield |
Engine
| Aux. fuel | 7.2 gal (27.3 L) |
|---|---|
| Engine type | Morris 3.8L 4-cyl tvo |
| Fuel tank | 19.2 gal (72.7 L) |
| Air cleaner | oil bath |
| Bore/Stroke | 3.94x4.72 inches (100 x 120 mm) |
| Coolant capacity | 19.2 qts (18.2 L) |
| Description | Morris / tvo / 4-cylinder / liquid-cooled |
| Displacement | 230.1 ci (3.8 L) |
| Idle RPM | 600-2000 |
| Oil capacity | 7.8 qts (7.4 L) |
| Power | 38 hp (28.3 kW) |
| Rated RPM | 2000 |
| Starter volts | 12 |
| Torque | 138 lb-ft (187.1 Nm) |
| Torque RPM | 1000 |
| Belt (claimed) | 32.5 hp (24.2 kW) |
| Drawbar (claimed) | 25.4 hp (18.9 kW) |
Transmission
| Clutch | 280mm mechanical dry disc |
|---|---|
| Gears | 5 forward and 1 reverse |
| Oil capacity | 50.4 qts (47.7 L) |
| Transmission type | 5-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Mechanical drum brakes |
| Drive type | Two-wheel drive |
Hydraulics
| Pressure | 1000 psi (69.0 bar) |
|---|---|
| Type | open center |
Hitch
| Rear lift | 3700 lbs (1678 kg) |
|---|---|
| Rear Type | I |
PTO
| Engine RPM | 527@1400 |
|---|---|
| Rear PTO | transmission |
| Rear PTO Type | 540 (1.375) |
Dimensions & Tires
| Clearance (front axle) | 18 inches (45 cm) |
|---|---|
| Clearance (rear axle) | 23 inches (58 cm) |
| Front tread | 48 to 76 inches (121 to 193 cm) |
| Height (exhaust) | 82 inches (208 cm) |
| Height (hood) | 60.5 inches (153 cm) |
| Length | 123 inches (312 cm) |
| Operating weight | 4886 lbs (2216 kg) |
| Rear tread | 53 to 88 inches (134 to 223 cm) |
| Wheelbase | 78 inches (198 cm) |
| Width | 83 inches*Width at rear axles. (210 cm) |
| Front tire | 6.00-19 |
| Rear tire | 11.00-36 |
| Weight | 4886 lbs (2216 kg) |
| Wheelbase | 78 inches (198 cm) |
| Ag front | 6.00-19 |
| Ag rear | 11.00-36 / 9.00-36 |
Belt Pulley
| Diameter | 10.25 inches (26 cm) |
|---|---|
| RPM | 1039 |
| Speed | 2902 ft/min (884.53 meters/min) |
References
| Description | The Nuffield Universal Tractor published in 1949 |
|---|
Variants
| M3 | tricycle front |
|---|---|
| M4 | wide front |