Production
| Description | Utility tractor / Original price was $17,400 in 1990 |
|---|---|
| Manufacturer | Hesston (a part of Fiat) |
Engine
| Engine type | Fiat 2.7L 3-cyl diesel |
|---|---|
| Fuel tank | 19.2 gal (72.7 L) |
| Bore/Stroke | 3.937x4.528 inches (100 x 115 mm) |
| Compression | 17:1 |
| Description | Fiat 8035.06 / diesel / 3-cylinder / liquid-cooled |
| Displacement | 165 ci (2.7 L) |
| Power | 55 hp (41.0 kW) |
| Rated RPM | 2500 |
| Starter | electric |
| Starter volts | 12 |
| Drawbar (claimed) | 38 hp (28.3 kW) |
| Drawbar (tested) | 38.39 hp (28.6 kW) |
| PTO (claimed) | 45.8 hp (34.2 kW) |
| PTO (tested) | 45.78 hp (34.1 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 / 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 | 0 to 3 |
Hitch
| Control | position and lower-link draft control |
|---|---|
| Rear lift | 3920 lbs (1778 kg) |
| Rear Type | I/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) | 18.5 inches (46 cm) |
|---|---|
| 2WD Front tread | 55.1 to 74.75 inches (139 to 189 cm) |
| 2WD Length | 130 inches (330 cm) |
| 2WD Wheelbase | 85.6 inches (217 cm) |
| 4WD Clearance (front axle) | 14.5 inches (36 cm) |
| 4WD Front tread | 56.9 to 73.75 inches (144 to 187 cm) |
| 4WD Length | 133 inches (337 cm) |
| 4WD Wheelbase | 83.4 inches (211 cm) |
| Rear tread | 52.1 to 75.75 inches (132 to 192 cm) |
| 2WD Rear tire | 13.6-28 |
| 2WD Wheelbase | 85.6 inches (217 cm) |
| 4WD Wheelbase | 83.4 inches (211 cm) |
| Front tire | 6.50-16 |
| Weight | 4851 to 5402 pounds |
| 2WD Standard tires (ag) | Front: 6.50-16. Rear: 13.6-28 |
| 4WD Standard tires (ag) | Front: 9.5-24. Rear: 16.9-28 |
Hesston 55-66 Height
| 2WD ROPS | 92.5 inches (234 cm) |
|---|---|
| 4WD ROPS | 95 inches (241 cm) |
| Hood | 56.5 inches (143 cm) |
| Steering wheel | 63.5 inches (161 cm) |
Hesston 55-66 Weight
| 2WD Operating | 5290 lbs (2399 kg) |
|---|---|
| 2WD Shipping | 4851 lbs (2200 kg) |
| 4WD Shipping | 5402 lbs (2450 kg) |
| Ballasted | 6570 lbs (2980 kg) |
Hesston 55-66 attachments
| Description | front-end loader |
|---|
Nebraska Tractor Test 1560
| Description | Diesel 12-speed 2WDApril 15 - 29, 1985Link: Nebraska Tractor Test 1560 file / PTO performance / Drawbar performance |
|---|---|
| Fuel use | 3.0 gal/hour (11.4 l/hour) / 2.7 gal/hour (10.2 l/hour) / 3.0 gal/hour (11.4 l/hour) |
| Max power | 38.39 hp (28.6 kW) |
| Power at rated engine speed | 45.78 hp (34.1 kW) |
| Power at rated PTO speed | 44.84 hp (33.4 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 16.9-28 rear tires. / With 16.9-28 rear tires. |
|---|
Variants
| 55-66 | utility 2WD |
|---|---|
| 55-66DT | utility 4WD |