Nuffield PM-4 Universal: all source data
All 59 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Nuffield |
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| (no label) | Utility tractor |
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| (no label) | Built in Birmingham, England |
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Engine| (no label) | Morris Motors 3.8L 4-cyl gasoline |
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| Fuel tank | 16.8 gal | 63.6 L |
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| Aux. fuel | 1.8 gal | 6.8 L |
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Transmission| (no label) | 5-speed gear |
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Power| Engine | 40.8 hp | 30.4 kW |
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| Drawbar (claimed) | 34.2 hp | 25.5 kW |
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| Belt (claimed) | 43.5 hp | 32.4 kW |
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| Drawbar (tested) | 33.66 hp | 25.1 kW |
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| Belt (tested) | 38.4 hp | 28.6 kW |
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Mechanical| (no label) | Two-wheel drive |
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| (no label) | Manual steering |
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| (no label) | Independent mechanical expanding band brakes |
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| (no label) | Open operator station. |
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Hydraulics| Type | open center |
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| Pressure | 1200 psi | 82.7 bar |
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| Pressure | 2000 psi (1955 onward) | 137.9 bar |
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Pto| Rear PTO Type | 540 (1.375) |
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| Engine RPM | 528@1400 |
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Dimensions| Wheelbase | 78 inches | 198 cm |
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| Weight | 5,307 lbs | 2407 kg |
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| Front tire | 6.00-16 |
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| Rear tire | 11.00-36 |
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Engine
Engine detail| (no label) | Morris Motors |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled vertical L-head |
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| Displacement | 230 ci | 3.8 L |
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| Bore/Stroke | 3.937x4.724 inches | 100 x 120 mm |
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| Power | 40.8 hp | 30.4 kW |
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| Air cleaner | oil bath |
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| Compression | 6:1 |
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| Rated RPM | 2000 |
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| Torque | 226 lb-ft | 306.5 Nm |
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| Torque RPM | 950 |
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| Starter volts | 12 |
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| Coolant capacity (Coolant) | 18 qts | 17.0 L |
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Transmission
Transmission| Type | gear |
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| Gears | 5 forward and 1 reverse |
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| Clutch | 280mm dry disc |
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Dimensions
Tires| Ag front | 6.00-16 |
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| Ag rear | 11.00-36 |
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| Ag front | 7.50-18 |
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| Ag rear | 13.00-30 |
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| Ag rear | 14.00-30 |
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| Ag rear | 9.00-36 |
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Dimensions| Wheelbase | 78 inches | 198 cm |
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| Length | 121.7 inches | 309 cm |
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| Height (hood) | 59.5 inches | 151 cm |
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| Height (exhaust) | 80.7 inches | 204 cm |
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| Operating weight | 5,307 lbs | 2407 kg |
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| Ballasted weight | 7,765 lbs | 3522 kg |
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| Ground clearance | 21 inches (at frame) | 53 cm |
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| Clearance (front axle) | 17 inches | 43 cm |
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| Clearance (drawbar) | 21.4 inches | 54 cm |
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| Front tread | 52.8 to 70.9 inches | 134 to 180 cm |
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| Rear tread | 53.2 to 88.2 inches | 135 to 224 cm |
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