Introduction
Renault 781 Agricultural Tractor
The Renault 781 is a row-crop tractor produced between 1977 and 1980. Designed as a versatile machine for mid-range agricultural operations, this model integrates mechanical reliability with functional power delivery.
Engine and Performance
The tractor is powered by an MWM D226-4 diesel engine, a 4-cylinder unit with a displacement of 4.2 liters. It develops a rated power of 78 hp (58.2 kW) at 2350 RPM. The engine configuration, featuring a bore and stroke of 105 x 120 mm, provides a maximum torque of 274.0 Nm at 1350 RPM, ensuring consistent performance during field operations.
Transmission and Mechanical Features
The drivetrain consists of a transmission offering 12 forward and 12 reverse gears, allowing for precise speed selection based on the implement requirements. The machine is available in both two-wheel and four-wheel drive configurations. Standard mechanical equipment includes power steering for improved maneuverability and dry disc brakes for reliable stopping power.
Hydraulics and Implements
The hydraulic system provides a total flow rate of 31.4 lpm (8.3 gpm), supporting the operation of various external tools. The rear lift capacity is rated at 3850 kg (8,489 lbs), which is sufficient for heavy-duty mounted implements. Additionally, the tractor features a rear PTO capable of operating at 540 or 1000 RPM, depending on the application needs.
Dimensions and Weight
The weight of the Renault 781 varies according to the drive configuration: the 2WD model weighs 3500 kg, while the 4WD version reaches 3900 kg. Standard agricultural tire configurations include 12.4-24 tires on the front and 16.9-34 tires on the rear, designed to maintain stability and traction in row-crop environments.
Conclusion
The Renault 781 is a robust and mechanically straightforward tractor well-suited for general row-crop farming tasks. Its combination of a high-torque 4-cylinder diesel engine and a versatile 12-speed transmission makes it an effective tool for farmers requiring a dependable machine for traction and cultivation work.
Renault 781 Manuals & Documentation
Download the manuals and documentation available for the Renault 781: repair and workshop manuals, operator's handbooks, spare-parts catalogs and technical leaflets — free PDF files.
Archive documentation provided for reference, hosted by Tractor-Info.
Production Information of Renault, 781
- Row-Crop tractor
| Manufacturer | Renault |
|---|
Dimension and Tires Information of Renault, 781
| 2WD Weight | 7718 lbs [3500 kg] |
|---|---|
| 4WD Weight | 8600 lbs [3900 kg] |
| Ag front | 7.50-18 |
|---|---|
| Ag rear | 16.9-34 |
| Ag rear | 16.9-34 |
| Ag front | 12.4-24 |
Engine Specifications of Renault, 781
- 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 | 202.1 lb-ft [274.0 Nm] |
| Power | 78 hp [58.2 kW] |
| Torque RPM | 1350 |
Transmission Information of Renault, 781
Transmission variants 1
| Gears | 12 forward and reverse |
|---|
Mechanical Specs of Renault, 781
- Two- or four-wheel drive
- Cab standard
- Power steering
- Dry disc brakes
Power Information of Renault, 781
| Rear PTO Type | 540/1000 |
|---|
Hydraulics Specifications of Renault, 781
| Total flow | 8.3 gpm [31.4 lpm] |
|---|
Three-Point Hitch of Renault, 781
| Rear lift | 8,489 lbs [3850 kg] |
|---|
Where it sits
With 78 HP, the Renault 781 sits between Cergos 335 (77 HP) and 96 (82 HP) in Renault's range. Its power puts it in the 57th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Renault 781 have?
The Renault 781 delivers 78 HP.
What years was the Renault 781 produced?
The Renault 781 was produced in 1977-1980.
What engine does the Renault 781 have?
The Renault 781 is powered by a Diesel, 4-cylinder engine.
How much does the Renault 781 weigh?
The Renault 781 weighs 7718 lbs [3500 kg].
Is the Renault 781 4WD?
The Renault 781 is available in 2WD/4WD.