Introduction
AGCO Allis 6690 Utility Tractor
Produced between 1991 and 1997, the AGCO Allis 6690 is an agricultural utility tractor manufactured by SAME in Italy. It is designed to serve a broad range of farming operations, offering a balance of mechanical simplicity and operational versatility.
Engine and Performance
The tractor is powered by an SLH 1000.4-AT four-cylinder, turbocharged diesel engine. It features a 4.0-liter displacement and an air-cooled design. The engine delivers 86.91 hp (64.8 kW) at a rated speed of 2500 RPM. Cold starting is facilitated by a Thermostart pre-heating system, and the engine is equipped with a dry element air cleaner.
Transmission and Drivetrain
The 6690 offers several transmission configurations to suit different field requirements. The base model features a 12-speed synchromesh transmission with four synchronized gears across three ranges. Optional configurations include 16-speed, 24-speed, and a 30-speed partial power shift transmission. The machine is available in both two-wheel and four-wheel drive variants, and utilizes a 305mm dry disc clutch for standard gear transmissions or a 124.5mm hydraulic wet disc clutch for PTO operation.
Hydraulics and Hitch
The hydraulic system is an open-center type providing a pump flow of 11.23 gpm (42.5 lpm). It includes two valves for implement control. The rear Category II/I three-point hitch utilizes position and draft control with lower-link sensing, capable of lifting up to 6,790 lbs (3079 kg) at the ends.
Operator Station and Dimensions
The operator environment consists of a flat-deck platform featuring a four-post Rollover Protective Structure (ROPS). An air-conditioned cab was available as an optional upgrade. The tractor has an overall length of 161 inches and a width of 82.4 inches. The 4WD model sits on a 92.8-inch wheelbase, while the 2WD model features a 96.4-inch wheelbase, both offering a ground clearance of 17.6 inches.
Conclusion
The AGCO Allis 6690 is a versatile utility tractor suited for medium-duty agricultural tasks. Its variety of transmission options and robust hydraulic capacity make it a practical choice for operators requiring a reliable machine for general fieldwork and implement management.
Production Information of AGCO Allis, 6690
- Original price was $35,000 in 1997
- Built in Italy
- Utility tractor
| Distributor | AGCO Allis |
|---|---|
| Manufacturer | SAME |
Dimension and Tires Information of AGCO Allis, 6690
- 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, 6690
- SLH 1000.4-AT
- Air-cooled
- Turbocharged diesel
- 4-cylinder
| Idle RPM | 650-2710 |
|---|---|
| Displacement | 244 ci [4.0 L] |
| Air cleaner | Dry element |
| Bore/Stroke | 4.13x4.55 inches [105 x 116 mm] |
| Oil capacity | 9.2 qts [8.7 L] |
| Starter volts | 12 |
| Rated RPM | 2500 |
| Pre-heating | Thermostart |
| Power | 86.91 hp [64.8 kW] |
Transmission Information of AGCO Allis, 6690
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, 6690
- Two- or four-wheel drive
- Flat-deck with four-post ROPS. Cab optional with air-conditioning.
- Power steering
- Hydraulic wet disc brakes
Power Information of AGCO Allis, 6690
| 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, 6690
| Type | Open center |
|---|---|
| Pump flow | 11.23 gpm [42.5 lpm] |
| Capacity | 15.2 gal [57.5 L] |
| Valves | 2 |
Three-Point Hitch of AGCO Allis, 6690
| 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, 6690
| Ground | Negative |
|---|---|
| Battery AH | 100 |
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 55 |
Where it sits
With 86 HP, the AGCO Allis 6690 sits just above 6680 (79 HP) in AGCO Allis's range. Its power puts it in the 60th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the AGCO Allis 6690 have?
The AGCO Allis 6690 delivers 86 HP.
What years was the AGCO Allis 6690 produced?
The AGCO Allis 6690 was produced in 1991-1997.
What engine does the AGCO Allis 6690 have?
The AGCO Allis 6690 is powered by a Turbocharged diesel, 4-cylinder engine.
What transmission does the AGCO Allis 6690 use?
The AGCO Allis 6690 uses a Synchromesh transmission.
Is the AGCO Allis 6690 4WD?
The AGCO Allis 6690 is available in 2WD/4WD.