| Manufacturer | AGCO Allis |
| Price | 40,000(USD) |
| Model | 6680 |
| Equipment Type | - |
| Factory | Italy |
OCED TRACTOR TEST 1091
| Description | Diesel 12-speed 7/1987 |
| Power at rated engine speed | 72.7hp / 54.2kW |
| Fuel use | 4.4gal/hour / 16.7l/hour |
| Max power | 62.09hp / 46.3kW |
AGCO ALLIS 6680 POWER
| Engine | 79.27hp / 59.1kW |
| PTO (claimed) | 72.7hp / 54.2kW |
| Drawbar (tested) | 62.09hp / 46.3kW |
| PTO (tested) | 72.7hp / 54.2kW |
ENGINE DETAIL
The AGCO Allis 6680 tractor features a robust SLH 1000.4-A 4-cylinder diesel engine with a displacement of 4.0L, producing 79.27 hp at 2500 RPM, ideal for moderate agricultural tasks. The dry element air cleaner enhances filtration, improving engine performance and longevity, while the 17:1 compression ratio optimizes power output and fuel efficiency. However, users should be mindful of the 9.7-quart oil capacity for maintenance, ensuring effective lubrication for the engine’s longevity.
| Description | SLH 1000.4-A diesel 4-cylinder air-cooled |
| Displacement | 244ci / 4.0L |
| Bore/Stroke | 4.13x4.55inches / 105 x 116mm |
| Power | 79.27hp / 59.1kW |
| Air cleaner | dry element |
| Compression | 17:1 |
| Rated RPM | 2500 |
| Idle RPM | 650-2710 |
| Starter volts | 12 |
| Starter power | 4.7hp / 3.5kW |
| Oil capacity | 9.7qts / 9.2 L |
AGCO ALLIS 6680 ENGINE
The AGCO Allis 6680, equipped with a SLH 4.0L 4-cylinder diesel engine, offers a balance of power and fuel efficiency, making it suitable for medium-duty agricultural tasks. Its compact engine design enhances maneuverability while delivering effective torque for heavy implements. However, users should be aware of potential maintenance challenges related to servicing the 4-cylinder configuration in tighter spaces compared to larger engines.
| Description | SLH 4.0L 4-cyl diesel |
TRANSMISSIONS OVERVIEW
The AGCO Allis 6680 tractor features a 12-speed synchromesh transmission, offering smooth gear shifts for increased efficiency during field operations. Its 30-speed partial powershift capability enhances versatility in varying load conditions, making it suitable for both lightweight and heavy-duty applications. However, the complexity of a multi-speed transmission may require more frequent maintenance and a steeper learning curve for operators unfamiliar with advanced shifting systems.
| Description | 12-speed synchromesh 24-speed 16-speed 30-speed partial power shift |
TRANSMISSION 1
The AGCO Allis 6680 features a synchromesh transmission with 12 forward and reverse gears, providing versatility for a range of tasks. Its 305mm dry disc clutch enables smooth shifting, ideal for operations requiring frequent gear changes. With an oil capacity of 61 quarts (57.7 liters), maintaining optimal lubrication is crucial for prolonged engine and transmission life, especially in continuous use scenarios.
| Type | synchromesh |
| Gears | 12 forward and reverse |
| Clutch | 305mm dry disc |
| Oil capacity | 61qts / 57.7L |
| Description | Four synchronized gears in three ranges. |
SPEEDS
| Description | With 16.9R34 rear tires. |
TRANSMISSION 2
The AGCO Allis 6680 features a 24 forward and 12 reverse gear configuration, providing versatile speed control for various agricultural tasks. The wide range of gears allows for better adaptation to different terrains and operational requirements, improving efficiency in both field and transport applications. However, the complexity of the transmission system may pose a challenge in terms of maintenance and operator training for effective gear utilization.
| Gears | 24 forward and 12 reverse |
TRANSMISSION 3
The AGCO Allis 6680 tractor features a 16-speed gear transmission, offering enhanced versatility for various agricultural tasks through its well-defined forward and reverse capabilities. This multiplicity of gears allows for optimal power management and speed adjustment, making it suitable for both fieldwork and transport applications. Users should note the potential learning curve in mastering gear selection for different operational scenarios, but the enhanced control can lead to increased productivity.
| Gears | 16 forward and reverse |
TRANSMISSION 4
The AGCO Allis 6680 features a partial power shift transmission with 30 total gears, providing flexibility across various field conditions. Its three-range system (Low/Medium/High) allows for efficient operation, enhancing productivity during tasks like tillage and transport. However, operators may need to familiarize themselves with gear selection to optimize performance and minimize wear on components.
| Type | partial power shift |
| Gears | 30 forward and reverse |
| Description | Five gears (1-5) in three ranges (L/M/H) with high-low power shift. |
MECHANICAL
The AGCO Allis 6680 tractor features a versatile 4x2 drivetrain with an optional 4WD for enhanced traction, making it suitable for varied terrain. Its mechanical foot-actuated rear differential lock provides improved grip in challenging conditions, while the hydrostatic power steering allows for precise maneuverability. The availability of multiple transmission options, including partial power shift configurations, facilitates operational efficiency for diverse farming tasks, though the complexity may require additional operator training.
| Chassis | 4x2 2WD/4x4 MFWD 4WD (optional) |
| Differential lock | mechanical foot-actuated rear |
| Steering | hydrostatic power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard with air-conditioning. |
| Transmissions | 12-speed synchromesh/24-speed/16-speed/30-speed partial power shift |
CAPACITY
| Fuel | 28.27gal / 107.0L |
| Hydraulic system | 15.2gal / 57.5L |
HYDRAULICS
| Type | open center |
| Capacity | 15.2gal / 57.5L |
| Pressure | 2610 psi/180.0 bar |
| Valves | 2 |
| Pump flow | 11.1gpm / 42.0lpm |
TRACTOR HITCH
| Rear Type | II/I |
| Control | position and draft control with lower-link sensing |
| Rear lift (at ends) | 6,790lbs/3079kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | 124.5mm hydraulic wet disc |
| Rear RPM | 540/1000 (1.375) |
| Engine RPM | 540@2200 1000@2450 |
AGCO ALLIS 6680 TIRES
The AGCO Allis 6680 features versatile tire options, with standard configurations of 7.50-18 front and 16.9R34 rear for 2WD, or 14.9R24 front paired with 16.9R34 rear for 4WD, optimizing traction and stability depending on the intended use. The larger rear tires (16.9R34) enhance load capacity and tillage performance, making it suitable for heavy-duty agricultural tasks. However, tire selection can affect maneuverability in tight spaces; thus, consider operational scenarios carefully.
| Standard tires (ag) | Front: 7.50-18. Rear: 16.9R34 (2WD)/Front: 14.9R24. Rear: 16.9R34 (4WD) |
DIMENSIONS
| 2WD Wheelbase | 96.4inches / 244cm |
| 4WD Wheelbase | 92.8inches / 235cm |
| Length | 161inches / 408cm |
| Width | 82.4inches / 209cm |
| Height | 111.2inches / 282cm |
| Ground clearance | 17.6 inches / 44cm |
| Rear axle | Flange |
AGCO ALLIS 6680 WEIGHT
| 2WD Shipping | 6,724lbs / 3050kg |
| 4WD Shipping | 7,385lbs / 3349kg |
| 2WD Max capacity | 11,464lbs / 5200kg |
| 4WD Max capacity | 12,015lbs / 5450kg |
DIMENSIONS & TIRES
The AGCO Allis 6680 tractor features a robust 2WD wheelbase of 96.4 inches and a more compact 4WD wheelbase at 92.8 inches, allowing for stability in various terrain conditions. With a weight range of 6724 to 7385 pounds, it provides good traction and power for medium-duty agricultural tasks, although the heavier weight may limit mobility on softer ground. Notably, the front tires (7.50-18) and rear tires (16.9R34 for 2WD) ensure adequate flotation and grip, but the tire configuration may not be optimal for all soil types or wet conditions, necessitating careful consideration for specific farming scenarios.
| 2WD Wheelbase | 96.4inches / 244cm |
| 4WD Wheelbase | 92.8inches / 235cm |
| Weight | 6724 to 7385 pounds |
| Front tire | 7.50-18 |
| Rear tire | 16.9R34 (2WD) |
6680 SERIAL NUMBERS
| Location | Console, right side |
| 1991 | 1001 |
| 1992 | 1147 |
| 1993 | 1157 |
| 1994 | 1242 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 55 |
| Battery volts | 12 |
| Battery AH | 100 |