Introduction
Renault 681S Utility Tractor
The Renault 681S is a utility tractor produced between 1980 and 1986, belonging to the 651S and 751S series. It was designed to provide reliable mechanical performance for general agricultural operations.
Engine and Performance
The tractor is powered by an MWM D227-4 liquid-cooled, 4-cylinder diesel engine. With a displacement of 3.8 liters, it produces 68 horsepower (50.7 kW) at a rated speed of 2350 RPM. The engine delivers a maximum torque of 169.6 lb-ft (230 Nm) at 1500 RPM, providing consistent pulling power for field tasks.
Transmission and Drivetrain
The 681S features a mechanical shuttle transmission offering 12 forward and 12 reverse gears. It is equipped with a dry disc clutch and is available in both two-wheel and four-wheel drive configurations. Power steering and dry disc brakes are standard, ensuring maneuverability and control.
Hydraulics and PTO
The hydraulic system utilizes an open-center design with a total flow of 8.0 gpm (30.3 lpm) and a system pressure of 2611 psi (180 bar). The rear hitch is a Category II type with a lift capacity of 8489 lbs (3850 kg). The independent rear PTO supports both 540 and 1000 RPM speeds, facilitating the use of various implements.
Dimensions and Operator Environment
The tractor is available with either a ROPS or an optional cab. The wheelbase measures 93.3 inches for the 2WD model and 94.9 inches for the 4WD version. The rear tread width is adjustable between 51.2 and 78.8 inches, allowing the machine to be configured for different row crop requirements.
Conclusion
The Renault 681S is a robust utility tractor suited for farmers requiring a dependable, straightforward machine for daily field and farmstead work. Its mechanical simplicity and versatile power delivery make it a functional choice for various agricultural applications.
Production Information of Renault, 681S
- Utility tractor
| Manufacturer | Renault |
|---|
Dimension and Tires Information of Renault, 681S
| Height (cab) | 96.1 inches [244 cm] |
|---|---|
| 2WD Wheelbase | 93.3 inches [236 cm] |
| Width | 64.6 inches [164 cm] |
| 4WD Length | 156.3 inches [397 cm] |
| 4WD Wheelbase | 94.9 inches [241 cm] |
| 2WD Front tread | 51.2 to 74.8 inches [130 to 189 cm] |
| Height (steering wheel) | 64.2 inches [163 cm] |
| 2WD Length | 150 inches [381 cm] |
| Rear tread | 51.2 to 78.8 inches [130 to 200 cm] |
| 4WD Front tread | 53.2 to 74.8 inches [135 to 189 cm] |
Minimum width.
| 2WD Standard tires (ag) | Front: 7.50-18. Rear: 16.9-30 |
|---|---|
| 4WD Optional tires (ag) | Front: 13.6-24. Rear: 16.9-34 |
| 4WD Optional tires (ag) | Front: 11.2-28. Rear: 13.6-36 |
| 4WD Standard tires (ag) | Front: 11.2-24. Rear: 16.9-30 |
| 4WD Optional tires (ag) | Front: 11.2-28. Rear: 13.6-38 |
| 4WD Optional tires (ag) | Front: 9.5-28. Rear: 13.6-36 |
Engine Specifications of Renault, 681S
- MWM D227-4
- Liquid-cooled
- Diesel
- 4-cylinder
| Torque RPM | 1500 |
|---|---|
| Displacement | 230 ci [3.8 L] |
| Compression | 17.8:1 |
| Bore/Stroke | 3.875x4.724 inches [98 x 120 mm] |
| Starter volts | 12 |
| Torque | 169.6 lb-ft [230.0 Nm] |
| Rated RPM | 2350 |
| Power | 68 hp [50.7 kW] |
Transmission Information of Renault, 681S
Transmission variants 1
- Four gears in three ranges with shuttle.
| Type | Mechanical shuttle |
|---|---|
| Gears | 12 forward and reverse |
| Clutch | Dry disc |
Mechanical Specs of Renault, 681S
- Two- or four-wheel drive
- ROPS. Cab optional.
- Power steering
- Dry disc brakes
Power Information of Renault, 681S
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1099@2350 |
| Rear PTO(optional) | 642@2350 (540/1000) |
| Rear PTO Type | 540/1000 (1.375) |
| Engine RPM | 551@2350 |
Hydraulics Specifications of Renault, 681S
| Type | Open center |
|---|---|
| Pressure | 2611 psi [180.0 bar] |
| Total flow | 8.0 gpm [30.3 lpm] |
Three-Point Hitch of Renault, 681S
| Rear Type | II |
|---|---|
| Rear lift | 8489 lbs [3850 kg] |
Electrical System of Renault, 681S
| Charging system | Alternator |
|---|---|
| Battery AH | 80 |
| Charging amps | 35 |
| Battery volts | 12 |
Where it sits
With 68 HP, the Renault 681S sits between 651S (65 HP) and 751S (75 HP) in Renault's range. Its power puts it in the 50th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the Renault 681S have?
The Renault 681S delivers 68 HP.
What years was the Renault 681S produced?
The Renault 681S was produced in 1980-1986.
What engine does the Renault 681S have?
The Renault 681S is powered by a Diesel, 4-cylinder engine.
What transmission does the Renault 681S use?
The Renault 681S uses a Mechanical shuttle transmission.
Is the Renault 681S 4WD?
The Renault 681S is available in 2WD/4WD.