Overview
The Satoh ST-4040 is a 4WD utility farm tractor manufactured between 1977 and 1980. It is equipped with a Mitsubishi 2.1L 4-cylinder liquid-cooled diesel engine rated at 39.5 hp and a 9-speed gear transmission.
Ideal Applications
Powertrain and Engine Performance:
The Mitsubishi 4DQ5 diesel engine produces 39.5 hp at 2400 RPM and 92 lb-ft of torque at 1600 RPM, with a claimed PTO output of 35.5 hp.
Transmission and Drive Configuration:
This model features a 4x4 MFWD drive system integrated with a gear transmission providing 9 forward and 3 reverse speeds.
Chassis and Implement Interface:
The tractor has a 131.5-inch length, a weight of 3748 lbs, and includes a JIS1 rear hitch with position and draft control alongside a 540 RPM rear PTO.
Production
| Description | Utility tractor |
|---|---|
| Manufacturer | Satoh |
Engine
| Engine type | Mitsubishi 2.1L 4-cyl diesel |
|---|---|
| Fuel tank | 12.2 gal (46.2 L) |
| Bore/Stroke | 3.31x3.70 inches (84 x 94 mm) |
| Coolant capacity | 8.5 qts (8.0 L) |
| Description | Mitsubishi 4DQ5 / diesel / 4-cylinder / liquid-cooled |
| Displacement | 127.2 ci (2.1 L) |
| Oil capacity | 5.3 qts (5.0 L) |
| Power | 39.5 hp (29.5 kW) |
| Rated RPM | 2400 |
| Starter | electric |
| Starter volts | 12 |
| Torque | 92 lb-ft (124.8 Nm) |
| Torque RPM | 1600 |
| PTO (claimed) | 35.5 hp (26.5 kW) |
Transmission
| Gears | 9 forward and 3 reverse |
|---|---|
| Transmission type | 9-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | 4x4 MFWD 2WD |
Hitch
| Control | position and draft control |
|---|---|
| Rear Type | JIS1 |
PTO
| Engine RPM | 625@2400 |
|---|---|
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery volts | 12 |
|---|---|
| Ground | negative |
Dimensions & Tires
| Length | 131.5 inches (334 cm) |
|---|---|
| Rear tread | 48 to 71.5 inches (121 to 181 cm) |
| Weight | 3748 lbs (1700 kg) |
| Width | 60.6 inches (153 cm) |
| Rear tire | 12.4/11-28 |
| Weight | 3748 lbs (1700 kg) |
| Ag rear | 12.4/11-28 |
Variants
| ST4000 | 2WD |
|---|---|
| ST4040 | 4WD |