Overview
The AGCO Allis 6690 is an Italian-built utility tractor produced between 1991 and 1997, featuring a 4.0L four-cylinder turbocharged, air-cooled diesel engine rated at 80.88 hp. The model was offered in both 2WD and 4WD configurations, utilizing an open center hydraulic system and a choice of synchromesh or partial power shift transmissions ranging from 12 to 30 speeds.
Ideal Applications
Mechanical and Performance Testing:
OCED Tractor Test 1080 recorded a maximum drawbar power of 68.53 hp and a tested PTO output of 80.85 hp at 2500 rated engine RPM.
Hydraulic and Lift Configuration:
The rear Type II/I hitch is equipped with position and draft control using lower-link sensing, providing a rear lift capacity of 6,790 lbs at the ends.
Operational Weight and Chassis:
Depending on the drive type, shipping weights range from 6,724 lbs for 2WD models to 7,385 lbs for 4WD models, with a maximum capacity of up to 12,015 lbs.
Production
| Description | Utility tractor / Built in Italy / Original price was $35,000 in 1997 |
|---|---|
| Distributor | AGCO Allis |
| Manufacturer | SAME |
Engine
| Engine type | SLH 4.0L 4-cyl diesel |
|---|---|
| Air cleaner | dry element |
| Bore/Stroke | 4.13x4.55 inches (105 x 116 mm) |
| Description | SLH 1000.4-AT / turbocharged diesel / 4-cylinder / air-cooled |
| Displacement | 244 ci (4.0 L) |
| Idle RPM | 650-2710 |
| Oil capacity | 9.2 qts (8.7 L) |
| Power | 86.91 hp (64.8 kW) |
| Pre-heating | thermostart |
| Rated RPM | 2500 |
| Starter volts | 12 |
| Drawbar (tested) | 68.53 hp (51.1 kW) |
| PTO (claimed) | 80.88 hp (60.3 kW) |
| PTO (tested) | 80.85 hp (60.3 kW) |
Transmission
| Clutch | 305mm dry disc |
|---|---|
| Description | Four synchronized gears in three ranges. / Five gears (1-5) in three ranges (L/M/H) with high-low power shift. |
| Gears | 12 forward and reverse / 24 forward and 12 reverse / 16 forward and reverse / 30 forward and reverse |
| Oil capacity | 61 qts (57.7 L) |
| Type | synchromesh / partial power shift |
| Transmission type | 12-speed synchromesh / 24-speed / 16-speed / 30-speed partial power shift |
| Transmission type | 12-speed synchromesh / 24-speed / 16-speed / 30-speed partial power shift |
Mechanical
| Cab | Flat-deck with four-post ROPS. Cab optional with air-conditioning. |
|---|---|
| Description | Power steering / Hydraulic wet disc brakes |
| Drive type | Two- or four-wheel drive |
Capacity
| Fuel | 28.27 gal (107.0 L) |
|---|---|
| Hydraulic system | 15.2 gal (57.5 L) |
Hydraulics
| Capacity | 15.2 gal (57.5 L) |
|---|---|
| Pump flow | 11.23 gpm (42.5 lpm) |
| Type | open center |
| Valves | 2 |
Hitch
| Control | position and draft control with lower-link sensing |
|---|---|
| Rear lift (at ends) | 6,790 lbs (3079 kg) |
| Rear Type | II/I |
PTO
| Clutch | 124.5mm hydraulic wet disc |
|---|---|
| Engine RPM | 540@2200 |
| Rear PTO | independent |
| Rear PTO Type | 540/1000 (1.375) |
Electrical
| Battery AH | 100 |
|---|---|
| Battery volts | 12 |
| Charging amps | 55 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Standard tires (ag) | Front: 7.50-18. Rear: 16.9R34 (2WD) |
|---|---|
| 2WD Wheelbase | 96.4 inches (244 cm) |
| 4WD Wheelbase | 92.8 inches (235 cm) |
| Description | Flange rear axle |
| Ground clearance | 17.6 inches (44 cm) |
| Height | 111.2 inches (282 cm) |
| Length | 161 inches (408 cm) |
| Width | 82.4 inches (209 cm) |
| 2WD Wheelbase | 96.4 inches (244 cm) |
| 4WD Wheelbase | 92.8 inches (235 cm) |
| Front tire | 7.50-18 |
| Rear tire | 16.9R34 (2WD) |
| Weight | 6724 to 7385 pounds |
6690 Serial Numbers
| 1991 | 1001 |
|---|---|
| 1992 | 1427 |
| 1993 | 1506 |
| 1994 | 1669 |
| 1995 | 1888 |
| 1996 | 2010 |
| Description | FAQ: How to read a serial number table. |
| Location: | Console, right side |
AGCO Allis 6690 Weight
| 2WD Max capacity | 11,464 lbs (5200 kg) |
|---|---|
| 2WD Shipping | 6,724 lbs (3050 kg) |
| 4WD Max capacity | 12,015 lbs (5450 kg) |
| 4WD Shipping | 7,385 lbs (3349 kg) |
OCED Tractor Test 1080
| Description | Diesel 12-speed 5/1987Link: OCED Tractor Test 1080 file / PTO performance / Drawbar performance |
|---|---|
| Fuel use | 4.7 gal/hour (17.8 l/hour) / 5.3 gal/hour (20.1 l/hour) |
| Max power | 68.53 hp (51.1 kW) |
| Power at rated engine speed | 80.85 hp (60.3 kW) |
References
| Description | 6600 Series published in 1991, by AGCO |
|---|
Speeds
| Description | With 16.9R34 rear tires. |
|---|
Variants
| Explorer II 90 | similar SAME model |
|---|