Introduction
Satoh ST-4040 Utility Tractor
Produced between 1977 and 1980, the Satoh ST-4040 is a utility tractor designed for general agricultural applications. Part of the ST-4000 series, this model offers a balance of mechanical simplicity and operational versatility for mid-sized farming tasks.
Engine and Performance
The ST-4040 is powered by the Mitsubishi 4DQ5, a 4-cylinder, liquid-cooled diesel engine with a displacement of 127.2 cubic inches (2.1 liters). It generates a rated power output of 39.5 hp (29.5 kW) at 2400 engine RPM. The engine produces a maximum torque of 92 lb-ft (124.8 Nm) at 1600 RPM, providing sufficient lugging capability for varied field conditions.
Transmission and Drive
The tractor features a gear-type transmission providing 9 forward speeds and 3 reverse speeds. It was manufactured with both 2WD and 4x4 MFWD (Mechanical Front Wheel Drive) configurations to accommodate different traction requirements. The system is managed via an open operator station.
Hydraulics and Power Take-Off
The rear power take-off (PTO) operates at 540 RPM. For implement management, the tractor is equipped with a JIS Type 1 rear hitch, which incorporates both position and draft control systems to maintain consistent implement depth and performance.
Dimensions and Weight
The ST-4040 has a total length of 131.5 inches (334 cm) and a width of 60.6 inches (153 cm). Its base weight is 3748 lbs (1700 kg). The rear tread width is adjustable between 48 and 71.5 inches (121 to 181 cm), allowing for adaptation to different row spacings using its 12.4/11-28 agricultural rear tires.
Conclusion
The Satoh ST-4040 is a robust and mechanically straightforward utility tractor suitable for small to medium-scale agricultural operations. Its combination of a 4-cylinder diesel engine, multiple gear ratios, and draft-controlled hitching makes it an effective choice for general field work and implement handling.
Production Information of Satoh, ST-4040
- Utility tractor
| Manufacturer | Satoh |
|---|
Dimension and Tires Information of Satoh, ST-4040
| Length | 131.5 inches [334 cm] |
|---|---|
| Rear tread | 48 to 71.5 inches [121 to 181 cm] |
| Width | 60.6 inches [153 cm] |
| Weight | 3748 lbs [1700 kg] |
| Ag rear | 12.4/11-28 |
|---|
Engine Specifications of Satoh, ST-4040
- Mitsubishi 4DQ5
- Liquid-cooled
- 4-cylinder
- Diesel
| Rated RPM | 2400 |
|---|---|
| Starter | Electric |
| Displacement | 127.2 ci [2.1 L] |
| Bore/Stroke | 3.31x3.70 inches [84 x 94 mm] |
| Power | 39.5 hp [29.5 kW] |
| Torque RPM | 1600 |
| Torque | 92 lb-ft [124.8 Nm] |
| Coolant capacity | 8.5 qts [8.0 L] |
| Oil capacity | 5.3 qts [5.0 L] |
| Starter volts | 12 |
Transmission Information of Satoh, ST-4040
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 9 forward and 3 reverse |
Mechanical Specs of Satoh, ST-4040
- Open operator station.
| Drive | 4x4 MFWD 2WD |
|---|
Power Information of Satoh, ST-4040
| Rear PTO Type | 540 (1.375) |
|---|---|
| Rear PTO Type(optional) | 1466@2400 |
| Rear PTO Type(optional) | 1168@2400 |
| Engine RPM | 625@2400 |
| Engine RPM(optional) | 837@2400 |
Three-Point Hitch of Satoh, ST-4040
| Rear Type | JIS1 |
|---|---|
| Control | Position and draft control |
Electrical System of Satoh, ST-4040
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
Its power puts it in the 23th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Satoh ST-4040 have?
The Satoh ST-4040 delivers 39 HP.
What years was the Satoh ST-4040 produced?
The Satoh ST-4040 was produced in 1977-1980.
What engine does the Satoh ST-4040 have?
The Satoh ST-4040 is powered by a Diesel, 4-cylinder engine.
What transmission does the Satoh ST-4040 use?
The Satoh ST-4040 uses a Gear transmission.
How much does the Satoh ST-4040 weigh?
The Satoh ST-4040 weighs 3748 lbs [1700 kg].
Is the Satoh ST-4040 4WD?
The Satoh ST-4040 is available in 2WD/4WD.