Introduction
AGCO Allis 6680 Utility Tractor
The AGCO Allis 6680 is a utility tractor produced between 1991 and 1997. Manufactured in Italy by SAME, this model was designed to serve as a versatile machine for general agricultural operations, available in both two-wheel and four-wheel drive configurations.
Engine and Performance
The tractor is powered by an SLH 1000.4-A diesel engine. This 4.0-liter, 4-cylinder unit is air-cooled and produces 79 horsepower (59.1 kW) at a rated speed of 2500 RPM. The engine features a 17:1 compression ratio and utilizes a dry element air cleaner, ensuring consistent performance for daily farm tasks.
Transmission and Drivetrain
The 6680 offers multiple transmission configurations to suit various operational needs, ranging from a 12-speed synchromesh gearbox to a 30-speed partial power shift transmission. Power is transferred through a 305mm dry disc clutch for the main transmission and a 124.5mm hydraulic wet disc clutch for the independent rear PTO, which operates at 540 and 1000 RPM.
Hydraulics and Hitch
The hydraulic system is an open-center design providing a pump flow of 11.1 gpm (42.0 lpm) at a pressure of 2610 psi. It is equipped with two valves to manage external implements. The rear hitch is a Category II/I type, featuring position and draft control with lower-link sensing, capable of lifting up to 6,790 lbs (3079 kg) at the ends.
Operator Environment and Mechanicals
Designed for operator comfort, the tractor comes standard with a cab featuring air-conditioning. Maneuverability is assisted by power steering and hydraulic wet disc brakes. The mechanical differential lock is foot-actuated, providing necessary traction in field conditions.
Conclusion
With its flexible transmission options, 79 hp engine, and robust hitch capacity, the AGCO Allis 6680 is a capable utility tractor suited for a wide range of medium-duty agricultural applications, reflecting the engineering standards of its era.
Production Information of AGCO Allis, 6680
- Original price was $40,000 in 1997
- Built in Italy
- Utility tractor
| Distributor | AGCO Allis |
|---|---|
| Manufacturer | SAME |
Dimension and Tires Information of AGCO Allis, 6680
- Flange rear axle
| 2WD Wheelbase | 96.4 inches [244 cm] |
|---|---|
| Height | 111.2 inches [282 cm] |
| Width | 82.4 inches [209 cm] |
| 4WD Wheelbase | 92.8 inches [235 cm] |
| Ground clearance | 17.6 inches [44 cm] |
| Length | 161 inches [408 cm] |
| Standard tires (ag) | Front: 7.50-18. Rear: 16.9R34 (2WD) |
|---|---|
| Standard tires (ag)(optional) | Front: 14.9R24. Rear: 16.9R34 (4WD) |
Engine Specifications of AGCO Allis, 6680
- SLH 1000.4-A
- Air-cooled
- 4-cylinder
- Diesel
| Air cleaner | Dry element |
|---|---|
| Idle RPM | 650-2710 |
| Displacement | 244 ci [4.0 L] |
| Bore/Stroke | 4.13x4.55 inches [105 x 116 mm] |
| Power | 79.27 hp [59.1 kW] |
| Rated RPM | 2500 |
| Compression | 17:1 |
| Oil capacity | 9.7 qts [9.2 L] |
| Starter power | 4.7 hp [3.5 kW] |
| Starter volts | 12 |
Transmission Information of AGCO Allis, 6680
Transmission variants 1
- Four synchronized gears in three ranges.
| Type | Synchromesh |
|---|---|
| Oil capacity | 61 qts [57.7 L] |
| Gears | 12 forward and reverse |
| Clutch | 305mm dry disc |
Transmission variants 2
| Gears | 24 forward and 12 reverse |
|---|
Transmission variants 3
| Gears | 16 forward and reverse |
|---|
Transmission variants 4
- Five gears (1-5) in three ranges (L/M/H) with high-low power shift.
| Type | Partial power shift |
|---|---|
| Gears | 30 forward and reverse |
- 12-speed synchromesh
- 30-speed partial power shift
- 24-speed
- 16-speed
Mechanical Specs of AGCO Allis, 6680
- Two- or four-wheel drive
- Cab standard with air-conditioning.
- Hydraulic wet disc brakes
- Power steering
| Differential lock | Mechanical foot-actuated rear |
|---|
Power Information of AGCO Allis, 6680
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2450 |
| Engine RPM | 540@2200 |
| Clutch | 124.5mm hydraulic wet disc |
| Rear PTO Type | 540/1000 (1.375) |
Hydraulics Specifications of AGCO Allis, 6680
| Type | Open center |
|---|---|
| Pump flow | 11.1 gpm [42.0 lpm] |
| Valves | 2 |
| Capacity | 15.2 gal [57.5 L] |
| Pressure | 2610 psi [180.0 bar] |
Three-Point Hitch of AGCO Allis, 6680
| Rear Type | II/I |
|---|---|
| Control | Position and draft control with lower-link sensing |
| Rear lift (at ends) | 6,790 lbs [3079 kg] |
Electrical System of AGCO Allis, 6680
| Ground | Negative |
|---|---|
| Battery AH | 100 |
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 55 |
Where it sits
With 79 HP, the AGCO Allis 6680 sits between 6670 (69 HP) and 6690 (86 HP) in AGCO Allis's range. Its power puts it in the 54th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the AGCO Allis 6680 have?
The AGCO Allis 6680 delivers 79 HP.
What years was the AGCO Allis 6680 produced?
The AGCO Allis 6680 was produced in 1991-1997.
What engine does the AGCO Allis 6680 have?
The AGCO Allis 6680 is powered by a Diesel, 4-cylinder engine.
What transmission does the AGCO Allis 6680 use?
The AGCO Allis 6680 uses a Synchromesh transmission.
Is the AGCO Allis 6680 4WD?
The AGCO Allis 6680 is available in 2WD/4WD.