| Manufacturer |
Sheppard Diesel |
| Price |
- |
| Model |
SD-4 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Hanover, Pennsylvania, USA |
SHEPPARD DIESEL SD-4 POWER
| Engine |
51 hp/38.0 kW |
| Plows |
4 |
ENGINE DETAIL
The Sheppard Diesel SD-4 tractor features a robust 5.2 L, 4-cylinder engine with a high compression ratio of 22:1, which enhances thermal efficiency and fuel economy while delivering a power output of 51 hp at a rated RPM of 1650. The indirect injection fuel system allows for smoother combustion and lower emissions, making it suitable for various agricultural applications. However, the 4.50 x 5.00 inch bore-stroke configuration may limit the peak torque characteristics, thus potentially affecting performance in high-load scenarios.
| Description |
Sheppard Diesel 4-319/diesel/4-cylinder/liquid-cooled |
| Displacement |
319 ci/5.2 L |
| 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 |
SHEPPARD DIESEL SD-4 ENGINE
The Sheppard Diesel SD-4 tractor features a robust 5.2L 4-cylinder diesel engine, offering a balance of power and fuel efficiency suitable for a variety of agricultural applications. Key advantages include high torque output for enhanced towing capability and durability in rugged conditions; however, maintenance complexity may increase due to the engine's design. Ideal for tasks requiring sustained load handling, such as plowing or hauling, it is important to consider the availability of parts and service support in your region.
| Description |
Sheppard Diesel 5.2L 4-cyl diesel |
TRANSMISSION
The Sheppard Diesel SD-4 tractor features a robust 10 forward and 2 reverse gear configuration, enhancing versatility for various agricultural tasks. The standard dry disc clutch provides reliable engagement, though the optional torque converter can improve power delivery and smoothness during operation, particularly in challenging terrain. Considerations for the torque converter include increased initial costs and potential maintenance, but it may significantly enhance productivity when tackling heavy loads.
| Type |
gear |
| Gears |
10 forward and 2 reverse |
| Clutch |
dry disc |
| Description |
In the final year of production, a torque converter was an option on the SD-4 transmission. |
MECHANICAL
The Sheppard Diesel SD-4 tractor features a 4x2 2WD configuration, making it suitable for lighter agricultural tasks but limited in traction on uneven terrain compared to 4WD models. The manual steering provides simplicity but may require more operator effort, while the 10-speed gear transmission allows for versatile speed regulation during operations. The open operator station offers good visibility but lacks weather protection, which could be a disadvantage in inclement weather scenarios.
| Chassis |
4x2 2WD |
| Final drives |
spur gear |
| Steering |
manual |
| Brakes |
disc |
| Cab |
Open operator station. |
| Transmission |
10-speed gear |
POWER TAKE-OFF (PTO)
SHEPPARD DIESEL SD-4 TIRES
The Sheppard Diesel SD-4 tractor features AG front tires (6.00-16) that enhance maneuverability and traction on diverse terrain, while the AG rear tires (13x38) provide substantial load-bearing capacity essential for plowing and heavy-duty applications. This configuration favors stability and weight distribution, optimizing performance in agricultural tasks. However, the specific tire sizes may limit compatibility with certain implements, necessitating careful selection based on intended use.
| Ag front |
6.00-16 |
| Ag rear |
13x38 |
DIMENSIONS
| Wheelbase |
91.5 inches/232 cm |
| Length |
140.7 inches/357 cm |
| Height |
83.5 inches/212 cm |
| Weight |
6250 lbs/2835 kg |
| Front tread |
9.25/12.75 inches/23/32 cm(tricycle) |
| Rear tread |
56 to 84 inches/142 to 213 cm |
DIMENSIONS & TIRES
The Sheppard Diesel SD-4 tractor features a 91.5-inch wheelbase, providing stability during operations with heavy loads, but may limit maneuverability in tight spaces. Weighing 6,250 lbs, its substantial mass aids in traction, particularly on uneven terrain; however, this weight may impose challenges in transport and logistics. The tire specifications (6.00-16 front and 13x38 rear) suggest a focus on balance between power transmission and flotation, enhancing performance for agricultural tasks.
| Wheelbase |
91.5 inches/232 cm |
| Weight |
6250 lbs/2835 kg |
| Front tire |
6.00-16 |
| Rear tire |
13x38 |
BELT PULLEY
| Diameter |
10 inches/25 cm |
| Width |
7.5 inches/19 cm |
| RPM |
1150 |
| Speed |
3010 ft/min/917.45 meters/min |
