Introduction
Renault 781S Agricultural Tractor
The Renault 781S is a utility tractor produced between 1980 and 1985. Designed for general agricultural operations, this model occupies the mid-range power segment of the era, offering a balance of mechanical simplicity and operational versatility.
Engine and Performance
The tractor is equipped with an MWM D226-4 diesel engine. This 4-cylinder unit features a displacement of 4.2 liters (253.5 cubic inches) and produces 78 horsepower (58.2 kW). The engine reaches its peak torque of 270.1 Nm (199.2 lb-ft) at 1500 RPM, providing steady power delivery for field tasks. It operates at a rated engine speed of 2350 RPM.
Transmission and Drivetrain
The transmission system provides 12 forward and 12 reverse gears, allowing for a wide range of speeds suitable for various implements. The standard configuration is a 4x2 two-wheel drive system, though an optional 4x4 MFWD (Mechanical Front Wheel Drive) system was available to enhance traction. Steering is assisted by a hydrostatic power system, and the tractor utilizes dry disc brakes for deceleration.
Hydraulics and Implement Handling
The hydraulic system delivers a total flow of 32.9 liters per minute (8.7 gpm). For implement attachment, the rear three-point hitch offers a lift capacity of 4,501 kg (9,923 lbs). The rear power take-off (PTO) supports both 540 and 1000 RPM speeds, accommodating a diverse range of secondary agricultural equipment.
Dimensions and Weight
The 2WD variant of the 781S has a base weight of 3,200 kg (7,056 lbs), while the 4WD version weighs 3,965 kg (8,743 lbs). The machine is built on a 242 cm (95.3 inches) wheelbase with a total length of 411 cm (162.2 inches) and a height of 263 cm (103.9 inches).
Conclusion
The Renault 781S is a functional, mid-sized tractor well-suited for mixed farming operations. Its combination of a reliable MWM engine, a 12-speed transmission, and substantial lift capacity makes it a practical choice for light to medium-duty field work and general farm management.
Production Information of Renault, 781S
| Manufacturer | Renault |
|---|
Dimension and Tires Information of Renault, 781S
| Wheelbase | 95.3 inches [242 cm] |
|---|---|
| Wheelbase(optional) | 8,743 lbs (4WD) [3965 kg] |
| Weight | 7,056 lbs (2WD) [3200 kg] |
| Length | 162.2 inches [411 cm] |
| Height | 103.9 inches [263 cm] |
| Ag front | 7.50-18 |
|---|---|
| Ag rear | 16.9-34 |
| Ag rear | 16.9-34 |
| Ag front | 13.6-24 |
Engine Specifications of Renault, 781S
- MWM D226-4
- Diesel
- 4-cylinder
| Rated RPM | 2350 |
|---|---|
| Bore/Stroke | 4.134x4.724 inches [105 x 120 mm] |
| Displacement | 253.5 ci [4.2 L] |
| Torque | 199.2 lb-ft [270.1 Nm] |
| Power | 78 hp [58.2 kW] |
| Torque RPM | 1500 |
Transmission Information of Renault, 781S
Transmission variants 1
| Gears | 12 forward and reverse |
|---|
Mechanical Specs of Renault, 781S
- Standard
- Dry disc brakes
| Drive | 4x2 2WD |
|---|---|
| Drive(optional) | 4x4 MFWD 4WD optional |
| Steering | Hydrostatic power |
Power Information of Renault, 781S
| Rear PTO Type | 540/1000 |
|---|
Hydraulics Specifications of Renault, 781S
| Total flow | 8.7 gpm [32.9 lpm] |
|---|
Three-Point Hitch of Renault, 781S
| Rear lift | 9,923 lbs [4501 kg] |
|---|
Where it sits
With 78 HP, the Renault 781S sits between Cergos 335 (77 HP) and 96 (82 HP) in Renault's range. Its power puts it in the 59th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the Renault 781S have?
The Renault 781S delivers 78 HP.
What years was the Renault 781S produced?
The Renault 781S was produced in 1980-1985.
What engine does the Renault 781S have?
The Renault 781S is powered by a Diesel, 4-cylinder engine.
How much does the Renault 781S weigh?
The Renault 781S weighs 7,056 lbs (2WD) [3200 kg].
Is the Renault 781S 4WD?
The Renault 781S is available in 2WD/4WD.