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Nuffield Universal M4

Nuffield Universal M4 tractor
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The Nuffield Universal M4 is a row-crop tractor produced from 1948 to 1961 by Nuffield in Birmingham, England. It features a Morris 3.8L 4-cylinder liquid-cooled TVO engine producing 38 hp, with a 5-speed gear transmission and two-wheel drive. The tractor includes an open center hydraulic system with 1000 psi pressure, a rear I-type hitch with 3700 lbs lift capacity, and a transmission-driven rear PTO at 540 RPM. It has a wheelbase of 78 inches, weighs 4886 lbs, and rides on 6.00-19 front and 11.00-36 rear tires. The M4 variant has a wide front configuration and manual steering with mechanical drum brakes.
Nuffield M4Nuffield Universal M4tractorrow-crop tractor38 hpMorris engine5-speed transmissionfarm tractor
Power-
Founded-
ModelM4

Technical Specifications

Detailed specifications and technical data for Nuffield Universal M4

Power

Engine:38 hp (28.3 kW)
Belt (claimed):32.5 hp (24.2 kW)
Drawbar (claimed):25.4 hp (18.9 kW)

Tires

Ag rear:11.00-36, 9.00-36
Ag front:6.00-19

Engine

Make:Morris
Type:tvo
Power:38 hp (28.3 kW)
Torque:138 lb-ft (187.1 Nm)
Cooling:liquid-cooled
Idle RPM:600-2000
Aux. fuel:7.2 gal (27.3 L)
Cylinders:4-cylinder
Fuel tank:19.2 gal (72.7 L)
Rated RPM:2000
Torque RPM:1000
Air cleaner:oil bath
Bore/Stroke:3.94x4.72 inches (100 x 120 mm)
Displacement:230.1 ci (3.8 L)
Oil capacity:7.8 qts (7.4 L)
Starter volts:12
Coolant capacity:19.2 qts (18.2 L)

Dimensions

Width:83 inches (210 cm) *Width at rear axles.
Length:123 inches (312 cm)
Wheelbase:78 inches (198 cm)
Rear tread:53 to 88 inches (134 to 223 cm)
Front tread:48 to 76 inches (121 to 193 cm)
Height (hood):60.5 inches (153 cm)
Height (exhaust):82 inches (208 cm)
Operating weight:4886 lbs (2216 kg)
Clearance (rear axle):23 inches (58 cm)
Clearance (front axle):18 inches (45 cm)

Hydraulics

Type:open center
Pressure:1000 psi (69.0 bar)

Mechanical

Drive:Two-wheel drive
Brakes:Mechanical drum brakes
Steering:Manual steering
Operator station:Open operator station.

Production

Type:Row-Crop tractor
Built in:Birmingham, England
Years produced:1948 - 1961

Belt Pulley

RPM:1039
Speed:2902 ft/min (884.53 meters/min)
Diameter:10.25 inches (26 cm)

Transmission

Type:gear
Gears:5 forward and 1 reverse
Clutch:280mm mechanical dry disc
Oil capacity:50.4 qts (47.7 L)

Tractor hitch

Rear Type:I
Rear lift:3700 lbs (1678 kg)

Power Take-off (PTO)

Rear PTO:transmission
Engine RPM:527@1400
Rear PTO Type:540 (1.375)