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Engine:
Hesston Standard
Power:
55 HP (Engine) / HP (PTO)
Fuel Type:
Diesel
Production:
1985 - 1989
| Overview | |
|---|---|
| Summary | x1985 - 1989 66 Series Utility tractor |
| Production | |
|---|---|
| Manufacturer | Hesston (a part of Fiat) |
| Summary | Utility tractor / Original price was $17,400 in 1990 |
| Variants | |
|---|---|
| 55-66 | utility 2WD |
| 55-66DT | utility 4WD |
| Mechanical | |
|---|---|
| Summary | Two- or four-wheel drive / Power steering / Mechanical wet disc brakes / Four-post ROPS. Canopy optional. |
| Hydraulics | |
|---|---|
| Type | open center |
| Pressure | 2700 psi 186.2 bar |
| Valves | 0 to 3 |
| Total flow | 11 gpm 41.6 lpm |
| Tractor hitch | |
|---|---|
| Rear Type | I/II |
| Control | position and lower-link draft control |
| Rear lift | 3920 lbs 1778 kg |
| Electrical | |
|---|---|
| Charging system | alternator |
| Charging amps | 33 |
| Battery volts | 12 |
| References | |
|---|---|
| Summary | / 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 |
| Engine Detail | |
|---|---|
| Summary | Fiat 8035.06 / diesel / 3-cylinder / liquid-cooled |
| Displacement | 165 ci 2.7 L |
| Bore/Stroke | 3.937x4.528 inches 100 x 115 mm |
| Power | 55 hp 41.0 kW |
| Compression | 17:1 |
| Rated RPM | 2500 |
| Starter | electric |
| Starter volts | 12 |
| Transmission options | |
|---|---|
| Summary | 12-speed partially synchronized / 12-speed mechanical shuttle / 20-speed creeper |
| Transmission | |
|---|---|
| Type | partially synchronized |
| Gears | 12 forward and 4 reverse |
| Summary | Four gears (1-4) in three ranges (I-III). Shifts between gears are synchronized. |
| Transmission | |
|---|---|
| Type | mechanical shuttle |
| Gears | 12 forward and reverse |
| Summary | Four gears (1-4) in three ranges (I-III) with shuttle. |
| Transmission | |
|---|---|
| Type | creeper |
| Gears | 20 forward and 8 reverse |
| Summary | Four gears (1-4) in three ranges (I-III) with normal and creeper ranges. |
| Hesston 55-66 Tires | |
|---|---|
| 2WD Standard tires (ag) | Front: 6.50-16. Rear: 13.6-28 |
| 4WD Standard tires (ag) | Front: 9.5-24. Rear: 16.9-28 |
| Dimensions | |
|---|---|
| 2WD Wheelbase | 85.6 inches 217 cm |
| 4WD Wheelbase | 83.4 inches 211 cm |
| 2WD Length | 130 inches 330 cm |
| 4WD Length | 133 inches 337 cm |
| 2WD Clearance (front axle) | 18.5 inches 46 cm |
| 4WD Clearance (front axle) | 14.5 inches 36 cm |
| 2WD Front tread | 55.1 to 74.75 inches 139 to 189 cm |
| 4WD Front tread | 56.9 to 73.75 inches 144 to 187 cm |
| Rear tread | 52.1 to 75.75 inches 132 to 192 cm |
| Hesston 55-66 Weight | |
|---|---|
| 2WD Shipping | 4851 lbs 2200 kg |
| 4WD Shipping | 5402 lbs 2450 kg |
| 2WD Operating | 5290 lbs 2399 kg |
| Ballasted | 6570 lbs 2980 kg |
| Hesston 55-66 Height | |
|---|---|
| Steering wheel | 63.5 inches 161 cm |
| Hood | 56.5 inches 143 cm |
| 2WD ROPS | 92.5 inches 234 cm |
| 4WD ROPS | 95 inches 241 cm |
| Nebraska Tractor Test 1560 | |
|---|---|
| Summary | Diesel 12-speed 2WD April 15 - 29, 1985 Link: Nebraska Tractor Test 1560 file / PTO performance |
| Power at rated engine speed | 45.78 hp 34.1 kW |
| Fuel use | 3.0 gal/hour 11.4 l/hour |
| Power at rated PTO speed | 44.84 hp 33.4 kW |
| Fuel use | 2.7 gal/hour 10.2 l/hour |
| Summary | Drawbar performance |
| Max power | 38.39 hp 28.6 kW |
| Fuel use | 3.0 gal/hour 11.4 l/hour |
Last Database Update: 8/31/2025