The AGCO Allis 6690 is a 2WD/4WD utility tractor from the 6600 series. This tractor was manufactured by SAME for distributor AGCO Allis in Italy from 1991 to 1997. The AGCO Allis 6690 is equipped with a 4.0 L (244.0 cu·in) four-cylinder diesel engine and one of four transmission varians.
The AGCO Allis 6690 utility tractor used the SLH 1000.4-AT engine. It is a 4.0 L, 3,998 cm2, (244.0 cu·in) four-cylinder turbocharged diesel engine with 105.0 mm (4.13 in) of the cylinder bore and 116.0 mm (4.57 in) of the piston stroke. This engine produced 88.1 PS (64.8 kW; 87.0 HP) at 2,500 rpm of output power.
The AGCO Allis 6690 is equipped with hydrostatic power steering, hydraulic wet disc brakes, flat-deck with four-post ROPS or cab (optional), and 107.0 liters (28.3 US gal.; 23.5 Imp. gal) fuel tank.
AGCO Allis 6690 Specifications
| General Specifications | |
| Model | AGCO Allis 6690 |
| Length | 4,080 mm (160.6 in) |
| Width | 2,090 mm (82.3 in) |
| Height | 2,820 mm (111 in) |
| Wheel base |
2WD: 2,440 mm (96.1 in) 4WD: 2,350 mm (92.5 in) |
| Ground clearance | 440 mm (17.3 in) |
| Weight | – |
| Fuel tank capacity | 107.0 liters (28.3 US gal.; 23.5 Imp. gal) |
| Battery | 12V, 100Ah |
| Cabin type | Flat-deck with four-post ROPS or Cab (optional) |
| Engine | |
| Engine model | SLH 1000.4-AT |
| Engine type | Four-stroke, air-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 4.0 L, 3,998 cm2, (244.0 cu·in) |
| Bore and stroke | 105.0 mm X 116.0 mm (4.13 in X 4.57 in) |
| Horsepower | 88.1 PS (64.8 kW; 87.0 HP) at 2,500 rpm |
| Starter | Electric |
| Oil capacity: | 8.7 L (9.2 US. qt, 7.7 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet disc |
| Transmission model | – |
| Transmission type | Synchromesh with dry disc clutch |
| Gears | 12 forward and reverse |
| Speed | Forward: 28.5 kmh (17.7 mph) |
| Transmission model | – |
| Transmission type | Partial power shift |
| Gears | 30 forward and reverse |
| Transmission model | – |
| Transmission type | – |
| Gears | 24 forward and 12 reverse |
| Transmission model | – |
| Transmission type | – |
| Gears | 16 forward and reverse |
| Tires | |
| Front tires | Ag: 7.50-18 (2WD), 14.9R24 (4WD) |
| Rear tires | Ag: 16.9R34 |
| Three-Point Hitch | |
| Category | II/I |
| Control type | Position and draft control with lower-link sensing |
| Lift capacity (at ends) | 3,080 kg (6,790 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent with hydraulic wet disc clutch |
| Rear PTO speed | 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Hydraulic capacity | 57.5 L (15.2 US. gal, 12.6 Imp. gal.) |
| Valves | 2 |
| Pump flow | 11.23 gpm (42.5 lpm) |