Introduction
Sheppard Diesel SD-4 Row-Crop Tractor
The Sheppard Diesel SD-4 is a row-crop tractor produced between 1954 and 1956 in Hanover, Pennsylvania, USA. With a total production run of 231 units, this model represents a specific period in American agricultural machinery manufacturing, characterized by a focus on diesel engine integration for mid-range power requirements.
Engine Specifications
The tractor is powered by the Sheppard Diesel 4-319, a 4-cylinder liquid-cooled diesel engine with a displacement of 319 cubic inches (5.2 liters). It utilizes an indirect injection fuel system and operates at a rated speed of 1650 RPM, producing 51 horsepower. The bore and stroke measure 4.50 by 5.00 inches, with a compression ratio of 22:1.
Transmission and Drivetrain
The SD-4 features a gear-type transmission providing 10 forward speeds and 2 reverse speeds. Power is transferred via a dry disc clutch. In the final production year, a torque converter was introduced as an optional feature. The tractor utilizes a two-wheel-drive configuration with spur gear final drives.
Mechanical and Hydraulic Systems
The machine is equipped with a rear power take-off (PTO) operating at 540 RPM. Braking is provided by a disc brake system, and steering is manual. The operator station is of the open type, designed for standard row-crop field operations.
Dimensions and Weight
The SD-4 has a wheelbase of 91.5 inches (232 cm) and an overall length of 140.7 inches (357 cm). It weighs 6,250 lbs (2,835 kg). The tractor offers adjustable tread widths, with the front ranging from 56 to 80 inches and the rear from 56 to 84 inches, allowing for adaptation to different row spacing requirements.
Conclusion
The Sheppard Diesel SD-4 is a robust two-wheel-drive tractor designed for row-crop applications. Its mechanical simplicity, combined with a 51-horsepower diesel engine, makes it a notable example of mid-1950s agricultural equipment suitable for standard fieldwork and implement management.
Production Information of Sheppard Diesel, SD-4
- Row-Crop tractor
- Built in Hanover, Pennsylvania, USA
| Manufacturer | Sheppard Diesel |
|---|---|
| Total built | 231 |
Dimension and Tires Information of Sheppard Diesel, SD-4
| Rear tread | 56 to 84 inches [142 to 213 cm] |
|---|---|
| Wheelbase | 91.5 inches [232 cm] |
| Front tread | 56 to 80 inches [142 to 203 cm] |
| Weight | 6250 lbs [2835 kg] |
| Length | 140.7 inches [357 cm] |
| Front tread | 9.25/12.75 inches [23/32 cm (tricycle)] |
| Height | 83.5 inches [212 cm] |
| Ag front | 6.00-16 |
|---|---|
| Ag rear | 13x38 |
Engine Specifications of Sheppard Diesel, SD-4
- Sheppard Diesel 4-319
- Liquid-cooled
- Diesel
- 4-cylinder
| Starter type | Electric |
|---|---|
| Displacement | 319 ci [5.2 L] |
| Fuel system | Indirect injection |
| Bore/Stroke | 4.50x5.00 inches [114 x 127 mm] |
| Rated RPM | 1650 |
| Compression | 22:1 |
| Power | 51 hp [38.0 kW] |
Transmission Information of Sheppard Diesel, SD-4
Transmission variants 1
- In the final year of production, a torque converter was an option on the SD-4 transmission.
| Type | Gear |
|---|---|
| Gears | 10 forward and 2 reverse |
| Clutch | Dry disc |
Mechanical Specs of Sheppard Diesel, SD-4
- Two-wheel drive
- Open operator station.
- Disc brakes
- Manual steering
| Final drives | Spur gear |
|---|
Power Information of Sheppard Diesel, SD-4
| Rear PTO Type | 540 |
|---|
Where it sits
With 51 HP, the Sheppard Diesel SD-4 sits just above SD-3 (32 HP) in Sheppard Diesel's range. Its power puts it in the 76th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the Sheppard Diesel SD-4 have?
The Sheppard Diesel SD-4 delivers 51 HP.
What years was the Sheppard Diesel SD-4 produced?
The Sheppard Diesel SD-4 was produced in 1954-1956.
What engine does the Sheppard Diesel SD-4 have?
The Sheppard Diesel SD-4 is powered by a Sheppard Diesel 4-319, 4-cylinder engine.
What transmission does the Sheppard Diesel SD-4 use?
The Sheppard Diesel SD-4 uses a Gear transmission.
How much does the Sheppard Diesel SD-4 weigh?
The Sheppard Diesel SD-4 weighs 6250 lbs [2835 kg].
Is the Sheppard Diesel SD-4 4WD?
The Sheppard Diesel SD-4 is available in 2WD.