| Manufacturer | Nuffield |
| Price | - |
| Model | M4 |
| Equipment Type | Row-Crop Tractors |
| Factory | Birmingham, England |
NUFFIELD M4 POWER
| Engine | 38hp / 28.3kW |
| Drawbar (claimed) | 25.4hp / 18.9kW |
| Belt (claimed) | 32.5hp / 24.2kW |
ENGINE DETAIL
The Nuffield M4 tractor features a robust Morris tvo 4-cylinder engine with a displacement of 3.8L, delivering 38hp at a rated RPM of 2000, which is suitable for moderate farming tasks. It offers a torque of 138lb-ft at 1000 RPM, allowing good performance in low-speed applications like plowing or hauling. The oil bath air cleaner enhances engine longevity but may require more maintenance compared to dry filters; additionally, its 7.8qt oil capacity supports extended intervals between changes under optimal conditions.
| Description | Morris tvo 4-cylinder liquid-cooled |
| Displacement | 230.1ci / 3.8L |
| Bore/Stroke | 3.94x4.72inches / 100 x 120mm |
| Power | 38hp / 28.3kW |
| Air cleaner | oil bath |
| Rated RPM | 2000 |
| Idle RPM | 600-2000 |
| Torque | 138lb-ft / 187.1Nm |
| Torque RPM | 1000 |
| Starter volts | 12 |
| Oil capacity | 7.8qts / 7.4L |
| Coolant capacity | 19.2qts / 18.2L |
NUFFIELD M4 ENGINE
The Nuffield M4 is powered by a Morris 3.8L 4-cylinder two-stroke engine, which provides robust torque characteristics suitable for medium-duty farm applications. The combined fuel capacity of 26.4 gallons (99.4 liters) allows for extended operational periods, reducing downtime for refueling during long field tasks. However, its relatively low horsepower for the engine size could result in performance limitations in heavier tillage or transportation scenarios.
| Description | Morris 3.8L 4-cyl tvo |
| Fuel tank | 19.2gal / 72.7L |
| Aux. fuel | 7.2gal / 27.3L |
TRANSMISSION
The Nuffield M4 features a 5-speed forward and 1-speed reverse gear system, providing versatility for various agricultural tasks. Its 280mm mechanical dry disc clutch offers durability, although maintenance may be necessary in high-stress conditions. With an oil capacity of 50.4 quarts, efficient lubrication is ensured, optimizing engine performance and increasing operational reliability.
| Type | gear |
| Gears | 5 forward and 1 reverse |
| Clutch | 280mm mechanical dry disc |
| Oil capacity | 50.4qts / 47.7L |
MECHANICAL
The Nuffield M4 features a 4x2 2WD chassis, which provides adequate traction for light agricultural tasks but may struggle in soft or uneven terrain. Its manual steering offers simplicity and mechanical control, although it may require greater operator effort compared to power steering systems. With a 5-speed gear transmission, the tractor allows for versatile speed adjustments, but the absence of a cab may expose operators to the elements, affecting comfort during extended use.
| Chassis | 4x2 2WD |
| Steering | manual |
| Brakes | mechanical drum |
| Cab | Open operator station |
| Transmission | 5-speed gear |
HYDRAULICS
| Type | open center |
| Pressure | 1000psi / 69.0bar |
TRACTOR HITCH
| Rear Type | I |
| Rear lift | 3700lbs / 1678kg |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission |
| Rear RPM | 540 (1.375) |
| Engine RPM | 527@1400 |
NUFFIELD M4 TIRES
The Nuffield M4 features a front tire specification of 6.00-19 and a rear specification of 9.00-36, which provides a balance of traction and stability, particularly useful in agricultural settings. Its rear tire size allows for effective weight distribution and enhanced pulling capacity, making it suitable for various field operations. However, the smaller front tires may limit capability in deep mud or soft soil conditions, necessitating careful consideration of soil type when selecting this tractor for specific tasks.
| Ag front | 6.00-19 |
| Ag rear | 9.00-36 |
DIMENSIONS
| Wheelbase | 78inches / 198cm |
| Length | 123inches / 312cm |
| Width | 83inches / 210cm |
| Height (hood) | 60.5inches / 153cm |
| Height (exhaust) | 82inches / 208cm |
| Operating weight | 4886lbs / 2216kg |
| Clearance (front axle) | 18inches / 45cm |
| Clearance (rear axle) | 23inches / 58cm |
| Front tread | 48 to 76inches / 121 to 193cm |
| Rear tread | 53 to 88inches / 134 to 223cm |
DIMENSIONS & TIRES
The Nuffield M4's wheelbase of 78 inches (198 cm) provides stability and maneuverability, making it suitable for both agricultural tasks and tighter spaces. Weighing 4,886 lbs (2,216 kg), it strikes a balance between traction and mobility; however, its heavier mass may limit its performance on soft or uneven terrain. The combination of front tires sized 6.00-19 and rear tires 11.00-36 enhances grip and traction, which is advantageous for towing heavy implements or plowing activities.
| Wheelbase | 78inches / 198cm |
| Weight | 4886lbs / 2216kg |
| Front tire | 6.00-19 |
| Rear tire | 11.00-36 |
BELT PULLEY
| Diameter | 10.25inches / 26cm |
| RPM | 1039 |
| Speed | 2902ft/min / 884.53meters/min |