Fiat-Hesston
Hesston 70-90
The Hesston 70-90 is a utility tractor built by Fiat and distributed by Hesston in 1985. It is part of the 90 Series and features a Fiat 3.6L 4-cylinder diesel engine producing 70 hp. The tractor offers multiple transmission options including 12-speed synchromesh, 12-speed mechanical shuttle, and 20-speed creeper. It has two- or four-wheel drive with planetary final drives and mechanical rear differential lock. The tractor includes power steering, hydraulic wet disc brakes, and a four-post ROPS with an optional cab. Hydraulics are open center with 2702 psi pressure and 11 gpm pump flow. The rear hitch is category II with a lift capacity of 5212 lbs. The PTO is independent with a 540 rpm rear PTO shaft. Dimensions vary between 2WD and 4WD models, with wheelbases around 89 inches and weights from 6798 to 7436 lbs. Tires and other specifications vary to suit different agricultural needs.
Power70 hp
Founded1985
Model70-90
Technical Specifications
Detailed specifications and technical data for Hesston 70-90
Power
| Engine | 70 hp (52.2 kW) |
|---|---|
| PTO (tested) | 62.25 hp (46.4 kW) |
| PTO (claimed) | 62 hp (46.2 kW) |
| Drawbar (tested) | 53.92 hp (40.2 kW) |
Tires
| Ag rear | 16.9-30, 18.4-30, 13.6-38, 16.9-30 |
|---|---|
| 2WD Ag front | 7.50-16, 7.50-18, 9.5L-15 |
| 4WD Ag front | 11.2-24, 13.6-24, 12.4-24 |
Engine
| Type | diesel |
|---|---|
| Model | Fiat 8045.06 |
| Power | 70 hp (52.2 kW) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 4-cylinder |
| Fuel tank | 21.1 gal (79.9 L) |
| Rated RPM | 2500 |
| Bore/Stroke | 3.937x4.527 inches (100 x 115 mm) |
| Compression | 17:1 |
| Fuel system | direct injection |
| Pre-heating | ether injection |
| Displacement | 220.5 ci (3.6 L) |
| Starter volts | 12 |
Height
| Cab | 99.5 inches (252 cm) |
|---|---|
| ROPS | 101.25 inches (257 cm) |
| 2WD Hood | 58.25 inches (147 cm) |
| 4WD Hood | 64.5 inches (163 cm) |
Weight
| 2WD | 6798 lbs (3083 kg) |
|---|---|
| 4WD | 7436 lbs (3372 kg) |
| Ballasted | 7,775 lbs (3526 kg) |
| Operating | 7,100 lbs (2WD) (3220 kg) |
Variants
| 70-90DT | 4WD |
|---|
Dimensions
| 2WD Length | 135.25 inches (343 cm) |
|---|---|
| 4WD Length | 140.5 inches (356 cm) |
| Rear tread | 55.1 to 78.75 inches (139 to 200 cm) |
| 2WD Wheelbase | 89.25 inches (226 cm) |
| 4WD Wheelbase | 89.5 inches (227 cm) |
| 2WD Front tread | 55.5 to 75.25 inches (140 to 191 cm) |
| 4WD Front tread | 64.1 to 77 inches (162 to 195 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging amps | 65 |
| Charging system | alternator |
Hydraulics
| Type | open center |
|---|---|
| Pressure | 2702 psi (186.3 bar) |
| Pump flow | 11 gpm (41.6 lpm) |
| Rear valves | 2 or 3 |
Mechanical
| ROPS | Four-post ROPS. Cab optional. |
|---|---|
| Drive | Two- or four-wheel drive |
| Brakes | Differential hydraulic wet disc brakes |
| Final drives | planetary |
| Power steering | yes |
| Differential lock | mechanical rear |
Production
| Type | Utility tractor |
|---|---|
| Distributor | Hesston |
| Manufacturer | Fiat |
| Original price | $31,100 in 1985 |
Transmission
| Options | 12-speed synchromesh, 12-speed mechanical shuttle, 20-speed creeper |
|---|---|
| Creeper Type | creeper |
| Creeper Gears | 20 forward and 8 reverse |
| Synchromesh Type | synchromesh |
| Synchromesh Gears | 12 forward and 4 reverse |
| Synchromesh Clutch | 279.4mm dry disc |
| Mechanical shuttle Type | mechanical shuttle |
| Mechanical shuttle Gears | 12 forward and reverse |
Tractor hitch
| Rear Type | II |
|---|---|
| Rear lift | 5212 lbs (2364 kg) |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Engine RPM | 540@2198 |
| Rear PTO Type | 540 (1.375) |