Production
| Description | Utility tractor / Original price was $26,500 in 1990 |
|---|---|
| Distributor | Hesston |
| Manufacturer | Fiat |
Engine
| Engine type | Fiat 3.9L 4-cyl diesel |
|---|---|
| Fuel tank | 19.2 gal (72.7 L) |
| Bore/Stroke | 4.094x4.527 inches (104 x 115 mm) |
| Compression | 17:1 |
| Description | Fiat 8045.05 / diesel / 4-cylinder / liquid-cooled |
| Displacement | 238.5 ci (3.9 L) |
| Power | 80 hp (59.7 kW) |
| Pre-heating | ether |
| Rated RPM | 2500 |
| Starter | electric |
| Starter volts | 12 |
| Drawbar (claimed) | 62 hp (46.2 kW) |
| Drawbar (tested) | 62.21 hp (46.4 kW) |
| PTO (claimed) | 70 hp (52.2 kW) |
| PTO (tested) | 70.43 hp (52.5 kW) |
Transmission
| Description | Four gears (1-4) in three ranges (I-III). Shifts between gears are synchronized. / Four gears (1-4) in three ranges (I-III) with shuttle. / Four gears (1-4) in three ranges (I-III) with normal and creeper ranges. |
|---|---|
| Gears | 12 forward and 4 reverse / 12 forward and reverse / 20 forward and 8 reverse |
| Type | partially synchronized / mechanical shuttle / creeper |
| Transmission type | 12-speed partially synchronized / 12-speed mechanical shuttle / 20-speed creeper |
| Transmission type | 12-speed partially synchronized / 12-speed mechanical shuttle / 20-speed creeper |
Mechanical
| Description | Power steering / Differential mechanical wet disc brakes / Four-post ROPS. Canopy optional. |
|---|---|
| Drive type | Two- or four-wheel drive |
Hydraulics
| Pressure | 2700 psi (186.2 bar) |
|---|---|
| Total flow | 11 gpm (41.6 lpm) |
| Type | open center |
| Valves | 1 to 3 |
Hitch
| Control | position and lower-link draft control |
|---|---|
| Rear lift | 5194 lbs (2355 kg) |
| Rear Type | II |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/ground |
Electrical
| Battery volts | 12 |
|---|---|
| Charging amps | 33 |
| Charging system | alternator |
Dimensions & Tires
| 2WD Clearance (front axle) | 21.5 inches (54 cm) |
|---|---|
| 2WD Front tread | 55.1 to 74.75 inches (139 to 189 cm) |
| 2WD Length | 139 inches (353 cm) |
| 2WD Wheelbase | 90.7 inches (230 cm) |
| 4WD Clearance (front axle) | 16 inches (40 cm) |
| 4WD Front tread | 60.25 to 77 inches (153 to 195 cm) |
| 4WD Length | 143 inches (363 cm) |
| 4WD Wheelbase | 88.5 inches (224 cm) |
| Rear tread | 55.1 to 78.75 inches (139 to 200 cm) |
| 2WD Rear tire | 18.4-30 |
| 2WD Wheelbase | 90.7 inches (230 cm) |
| 4WD Wheelbase | 88.5 inches (224 cm) |
| Front tire | 7.50-16 |
| Weight | 5800 to 6535 pounds |
| 2WD Standard tires (ag) | Front: 7.50-16. Rear: 18.4-30 |
| 4WD Standard tires (ag) | Front: 12.4-24. Rear: 18.4-30 |
Hesston 80-66 Height
| Hood | 59 inches (149 cm) |
|---|---|
| ROPS | 100 inches (254 cm) |
| Steering wheel | 67 inches (170 cm) |
Hesston 80-66 Weight
| 2WD Shipping | 5800 lbs (2630 kg) |
|---|---|
| 4WD Operating | 6535 lbs (2964 kg) |
| 4WD Shipping | 6450 lbs (2925 kg) |
| Ballasted | 9400 lbs (4263 kg) |
Hesston 80-66 attachments
| Description | front-end loader |
|---|
Nebraska Tractor Test 1534
| Description | Diesel 12-speed 4WDOctober 1 - 11, 1984Link: Nebraska Tractor Test 1534 file / PTO performance / Drawbar performance |
|---|---|
| Fuel use | 4.1 gal/hour (15.5 l/hour) / 4.0 gal/hour (15.1 l/hour) / 4.2 gal/hour (15.9 l/hour) |
| Max power | 62.21 hp (46.4 kW) |
| Max pull | 7245 lbs (3286 kg) |
| Power at rated engine speed | 70.43 hp (52.5 kW) |
| Power at rated PTO speed | 68.91 hp (51.4 kW) |
References
| Description | 66 Series Tractors 45 to 70 PTO HP published in 1985, by Hesston / 66 Series Tractors Models 55-66, 60-66, 70-66, 80-66 - 45 to 70 PTO HP published in 1985, by Hesston |
|---|
Speeds
| Description | With 18.4-30 rear tires. / With 18.4-30 rear tires. / With 18.4-30 rear tires. |
|---|
Variants
| 80-66 | utility 2WD |
|---|---|
| 80-66DT | utility 4WD |
| 80-66HC | high-crop |
| 80-66HCDT | high-crop 4WD |
| 80-66OR | orchard 2WD |
| 80-66ORDT | orchard 4WD |