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| info | |
| 1950 - 1957, Farm/Agricultural tractor |
| Production | |
| Manufacturer: | Nuffield |
| Variants | |
| PM-3V: | row-crop front end |
| DM-4: | diesel engine |
| Dimensions & Tires | |
| Weight: | 5307 to 7765 pounds |
| Front tire: | 7.50x18 |
| Rear tire: | 14.00x30 |
| PM-4 Serial Numbers | |
| - Serial numbers unknown - |
| Nuffield PM-4 Power | |
| Engine: | 48 hp [35.8 kW] |
| Drawbar (claimed): | 27 hp [20.1 kW] |
| Belt (claimed): | 34 hp [25.4 kW] |
| Drawbar (tested): | 33.66 hp [25.1 kW] |
| PTO (tested): | 38.40 hp [28.6 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Brakes: | independent mechanical expanding band |
| Battery | |
| Number: | 1 |
| Volts: | 12 |
| info | |
| Bore/Stroke: | 3.937x4.724 inches [100 x 120 mm] |
| Power: | 48 hp [35.8 kW] |
| Air cleaner: | oil bath |
| Compression: | 6:1 |
| Rated RPM: | 2000 |
| Torque: | 226 lb-ft [306.5 Nm] |
| Torque RPM: | 950 |
| Starter volts: | 12 |
| Engine Detail | |
| Morris Motors, gasoline, 4-cylinder, liquid-cooled vertical L-head, 230 ci [3.8 L] |
| Transmission | |
| Gears: | 5 forward and 1 reverse |
| Dimensions | |
| Weight (operating): | 5,307 lbs [2407 kg] |
| Weight (ballasted): | 7,765 lbs [3522 kg] |
| Nuffield PM-4 Tires | |
| Ag front: | 7.50x18 |
| Ag rear: | 14.00x30 |