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| info | |
| 1954 - 1956, Row-Crop tractor | |
| Series back: | Sheppard Diesel SD-3 |
| Production | |
| Manufacturer: | Sheppard Diesel |
| Factory: | Hanover, Pennsylvania, USA |
| Total built: | 231 |
| Power Take-off (PTO) | |
| Rear RPM: | 540 |
| Dimensions & Tires | |
| Wheelbase: | 91.5 inches [232 cm] |
| Weight: | 6250 lbs [2835 kg] |
| Front tire: | 6.00-16 |
| Rear tire: | 13x38 |
| SD-4 Serial Numbers | |
| - Serial numbers unknown - |
| Sheppard Diesel SD-4 Power | |
| Engine: | 51 hp [38.0 kW] |
| Plows: | 4 |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Final drives: | spur gear |
| Steering: | manual |
| Brakes: | disc |
| Cab: | Open operator station. |
| Belt Pulley | |
| Diameter: | 10 inches [25 cm] |
| Width: | 7.5 inches [19 cm] |
| RPM: | 1150 |
| Speed: | 3010 ft/min [917.45 meters/min] |
| info | |
| Bore/Stroke: | 4.50x5.00 inches [114 x 127 mm] |
| Power: | 51 hp [38.0 kW] |
| Fuel system: | indirect injection |
| Compression: | 22:1 |
| Rated RPM: | 1650 |
| Starter type: | electric |
| Engine Detail | |
| Sheppard Diesel 4-319, diesel, 4-cylinder, liquid-cooled, 319 ci [5.2 L] |
| info | |
| Series back: | Sheppard Diesel SD-3 |
| Transmission | |
| Type: | gear |
| Gears: | 10 forward and 2 reverse |
| Clutch: | dry disc |
| In the final year of production, a torque converter was an option on the SD-4 transmission. | |
| info | |
| Series back: | Sheppard Diesel SD-3 |
| Dimensions | |
| Weight: | 6250 lbs [2835 kg] |
| Wheelbase: | 91.5 inches [232 cm] |
| Length: | 140.7 inches [357 cm] |
| Height: | 83.5 inches [212 cm] |
| Front tread: | 56 to 80 inches [142 to 203 cm] 9.25/12.75 inches (tricycle) [23/32 cm] |
| Rear tread: | 56 to 84 inches [142 to 213 cm] |
| Sheppard Diesel SD-4 Tires | |
| Ag front: | 6.00-16 |
| Ag rear: | 13x38 |