AGCO Allis 6680 - Horsepower, Weight, Specs, Problems, Price & More

The AGCO Allis 6680 tractor is powered by a SLH 4.0L 4-cyl diesel engine that provides 79.27hp / 59.1kW of horsepower and torque. It has a 4x2 2WD/4x4 MFWD 4WD (optional) drive configuration and a 12-speed synchromesh/24-speed/16-speed/30-speed partial power shift transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is a SLH 1000.4-A diesel 4-cylinder air-cooled with a displacement of 244ci / 4.0L and a bore/stroke of 4.13x4.55inches / 105 x 116mm. It has a power output of 79.27hp / 59.1kW and an air cleaner of dry element. The compression ratio is 17:1 and the rated rpm is 2500. The starter volts are 12 and the starter power is 4.7hp / 3.5kW. The oil capacity is 9.7qts / 9.2 L.

Transmission

The transmission is a 12-speed synchromesh/24-speed/16-speed/30-speed partial power shift. It has an engine power output of 79.27hp / 59.1kW and a PTO (claimed) power output of 72.7hp / 54.2kW. The drawbar (tested) power output is 62.09hp / 46.3kW and the PTO (tested) power output is 72.7hp / 54.2kW. The transmission is designed to provide smooth and efficient power transfer to the wheels. It is easy to operate and maintain.

Brakes

The brakes are hydraulic wet disc. The SLH 1000.4-A diesel 4-cylinder air-cooled engine provides a power output of 79.27hp / 59.1kW. The brakes are designed to provide reliable and efficient stopping power. The displacement of the engine is 244ci / 4.0L and the bore/stroke is 4.13x4.55inches / 105 x 116mm. The compression ratio is 17:1 and the rated rpm is 2500. The starter volts are 12 and the starter power is 4.7hp / 3.5kW. The oil capacity is 9.7qts / 9.2 L.

Steering

The steering is hydrostatic power. The SLH 4.0L 4-cylinder diesel engine provides reliable and efficient power output. The steering is designed to provide smooth and precise control of the tractor. It is easy to operate and maintain. The steering system is designed to provide maximum maneuverability and control in all conditions.

Common Problems

Users have reported issues with the transmission, particularly with shifting gears. Some users have also reported problems with the hydraulic system, including leaks and low pressure. Another common issue reported by users is the reliability of the brakes, with some users experiencing problems with the brakes failing to engage properly. Additionally, some users have reported issues with the cab, including poor ventilation and uncomfortable seating. Finally, some users have reported problems with the engine, including overheating and low power output.

What Users Like

Users appreciate the reliable and efficient power output of the SLH 1000.4-A diesel 4-cylinder air-cooled engine. They also like the smooth and precise control provided by the hydrostatic power steering system. The cab with air-conditioning is also appreciated by users, as it provides a comfortable working environment. Additionally, users like the versatility of the 12-speed synchromesh/24-speed/16-speed/30-speed partial power shift transmission, which allows them to easily adapt to different working conditions. Finally, users appreciate the reliable and efficient power transfer provided by the hydraulics system, which allows them to easily operate a variety of implements.

AGCO Allis 6680 Technical Specifications

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
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
Engine
Description	SLH 4.0L 4-cyl diesel
Mechanical
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
Tires
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
Dimensions And Tires
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)
Serial Numbers
Location	Console, right side
1991	1001
1992	1147
1993	1157
1994	1242
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
Electrical
Ground	negative
Charging System	alternator
Charging Amps	55
Battery Volts	12
Battery Ah	100
Speeds
Description	With 16.9R34 rear tires.
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
Weight
2wd Shipping	6,724lbs / 3050kg
4wd Shipping	7,385lbs / 3349kg
2wd Max Capacity	11,464lbs / 5200kg
4wd Max Capacity	12,015lbs / 5450kg

Other AGCO Allis tractors:

AGCO Allis 4650, AGCO Allis 4660, AGCO Allis 5650, AGCO Allis 5660, AGCO Allis 5670, AGCO Allis 5680, AGCO Allis 6670, AGCO Allis 6680, AGCO Allis 6690, AGCO Allis 7600, AGCO Allis 7630, AGCO Allis 7650, AGCO Allis 8610, AGCO Allis 8630, AGCO Allis 8745, AGCO Allis 8765, AGCO Allis 8775, AGCO Allis 8785, AGCO Allis 9130, AGCO Allis 9150, AGCO Allis 9170, AGCO Allis 9190, AGCO Allis 9435, AGCO Allis 9455, AGCO Allis 9630, AGCO Allis 9635, AGCO Allis 9650, AGCO Allis 9655, AGCO Allis 9670, AGCO Allis 9675, AGCO Allis 9690, AGCO Allis 9695, AGCO Allis 9735, AGCO Allis 9745, AGCO Allis 9755, AGCO Allis 9765, AGCO Allis 9775, AGCO Allis 9785, AGCO Allis 9815,