AGCO Allis 6680

The AGCO Allis 6680 is a tractor produced by Agco Allis. It is equipped with a 244 ci 4.0 L engine. The listed engine power is Diesel (listed): 79.27 hp / 59.1 kW; Diesel (listed): 4.7 hp / 3.5 kW. Transmission: 30 forward and reverse. Operating weight: 6724 to 7385 pounds.

Overview

	1991 - 1997 6600 SeriesUtility tractorSAME built 6600 Series Utility tractor SAME built

Production
Distributor	AGCO Allis
Manufacturer	SAME
Utility tractor
Built in Italy
Original price was $40,000 in 1997

Variants
5680	ROPS
6680	Cab
Explorer II 80	similar SAME model

AGCO Allis 6680 Engine
SLH 4.0L 4-cyl diesel
Engine details ...

AGCO Allis 6680 Power
Engine	79.27 hp 59.1 kW
PTO (claimed)	72.7 hp 54.2 kW
Drawbar (tested)	62.09 hp 46.3 kW
PTO (tested)	72.7 hp 54.2 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Differential lock	mechanical foot-actuated rear
Power steering
Hydraulic wet disc brakes
Cab standard with air-conditioning.

Capacity
Fuel	28.27 gal 107.0 L
Hydraulic system	15.2 gal 57.5 L

Hydraulics
Type	open center
Capacity	15.2 gal 57.5 L
Pressure	2610 psi 180.0 bar
Valves	2
Pump flow	11.1 gpm 42.0 lpm

Tractor hitch
Rear Type	II/I
Control	position and draft control with lower-link sensing
Rear lift (at ends)	6,790 lbs 3079 kg

Power Take-off (PTO)
Rear PTO	independent
Clutch	124.5mm hydraulic wet disc
Rear PTO Type	540/1000 (1.375)
Engine RPM	540@2200
	1000@2450

Dimensions & Tires
2WD Wheelbase	96.4 inches 244 cm
4WD Wheelbase	92.8 inches 235 cm
Weight	6724 to 7385 pounds
Front tire	7.50-18
Rear tire	16.9R34 (2WD)
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	55
Battery volts	12
Battery AH	100

References
6600 Series published in 1991, by AGCO

Engine

Engine Detail — 244 ci / 4.0 L Diesel

Manufacturer	SLH 1000.4-A
Fuel Type	Diesel
Configuration	4-cylinder, air-cooled
Displacement	244 ci 4.0 L
Bore/Stroke	4.13x4.55 inches 105 x 116 mm
Power	79.27 hp 59.1 kW
Air cleaner	dry element
Compression	17:1
Rated RPM	2500
Idle RPM	650-2710
Starter volts	12
Starter power	4.7 hp 3.5 kW
Oil capacity	9.7 qts 9.2 L

Transmission

Transmission options
12-speed synchromesh
24-speed
16-speed
30-speed partial power shift

Transmission — 12 forward and reverse synchromesh

Type	synchromesh
Gears	12 forward and reverse
Clutch	305mm dry disc
Oil capacity	61 qts 57.7 L
Four synchronized gears in three ranges.
With 16.9R34 rear tires.

Transmission — 24 forward and 12 reverse

Gears

24 forward and 12 reverse

Transmission — 16 forward and reverse

Gears

16 forward and reverse

Transmission — 30 forward and reverse partial power shift

Type	partial power shift
Gears	30 forward and reverse
Five gears (1-5) in three ranges (L/M/H) with high-low power shift.

Dimensions

AGCO Allis 6680 Tires
Standard tires (ag)	Front: 7.50-18. Rear: 16.9R34 (2WD)
	Front: 14.9R24. Rear: 16.9R34 (4WD)

Dimensions
2WD Wheelbase	96.4 inches 244 cm
4WD Wheelbase	92.8 inches 235 cm
Length	161 inches 408 cm
Width	82.4 inches 209 cm
Height	111.2 inches 282 cm
Ground clearance	17.6 inches 44 cm
Flange rear axle

AGCO Allis 6680 Weight
2WD Shipping	6,724 lbs 3050 kg
4WD Shipping	7,385 lbs 3349 kg
2WD Max capacity	11,464 lbs 5200 kg
4WD Max capacity	12,015 lbs 5450 kg

Tests

OCED Tractor Test 1091
Diesel 12-speed 4WD 7/1987 Link: OCED Tractor Test 1091 file
PTO performance
Power at rated engine speed	72.7 hp 54.2 kW
Fuel use	4.4 gal/hour 16.7 l/hour
Drawbar performance
Max power	62.09 hp 46.3 kW
Fuel use	5.2 gal/hour 19.7 l/hour
Gear 3N used for power test.
Max pull	5860 lbs 2658 kg
Gear 3N used for pull test.

Photos

AGCO Allis 6680 tractor photo