Production
| Description | Utility tractor / Original price was $31,100 in 1985 |
|---|---|
| Distributor | Hesston |
| Manufacturer | Fiat |
Engine
| Engine type | Fiat 3.6L 4-cyl diesel |
|---|---|
| Fuel tank | 21.1 gal (79.9 L) |
| Bore/Stroke | 3.937x4.527 inches (100 x 115 mm) |
| Compression | 17:1 |
| Description | Fiat 8045.06 / diesel / 4-cylinder / liquid-cooled |
| Displacement | 220.5 ci (3.6 L) |
| Fuel system | direct injection |
| Power | 70 hp (52.2 kW) |
| Pre-heating | ether injection |
| Rated RPM | 2500 |
| Starter | electric |
| Starter volts | 12 |
| Drawbar (tested) | 53.92 hp (40.2 kW) |
| PTO (claimed) | 62 hp (46.2 kW) |
| PTO (tested) | 62.25 hp (46.4 kW) |
Transmission
| Clutch | 279.4mm dry disc |
|---|---|
| Description | Four gears (1-4) in three ranges (I-III) plus reverse range. |
| Gears | 12 forward and 4 reverse / 12 forward and reverse / 20 forward and 8 reverse |
| Type | synchromesh / mechanical shuttle / creeper |
| Transmission type | 12-speed synchromesh / 12-speed mechanical shuttle / 20-speed creeper |
| Transmission type | 12-speed synchromesh / 12-speed mechanical shuttle / 20-speed creeper |
Mechanical
| Cab | Four-post ROPS. Cab optional. |
|---|---|
| Description | Power steering / Differential hydraulic wet disc brakes |
| Differential lock | mechanical rear |
| Drive type | Two- or four-wheel drive |
| Final drives | planetary |
Hydraulics
| Pressure | 2702 psi (186.3 bar) |
|---|---|
| Pump flow | 11 gpm (41.6 lpm) |
| Rear valves | 2 or 3 |
| Type | open center |
Hitch
| Rear lift | 5212 lbs (2364 kg) |
|---|---|
| Rear Type | II |
PTO
| Engine RPM | 540@2198 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540 (1.375) |
Electrical
| Battery volts | 12 |
|---|---|
| Charging amps | 65 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| 2WD Front tread | 55.5 to 75.25 inches (140 to 191 cm) |
|---|---|
| 2WD Length | 135.25 inches (343 cm) |
| 2WD Wheelbase | 89.25 inches (226 cm) |
| 4WD Front tread | 64.1 to 77 inches (162 to 195 cm) |
| 4WD Length | 140.5 inches (356 cm) |
| 4WD Wheelbase | 89.5 inches (227 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) |
| Front tire | 7.50-16 |
| Rear tire | 16.9-30 |
| Weight | 6798 to 7436 pounds |
| 2WD Ag front | 7.50-16 / 7.50-18 / 9.5L-15 |
| 4WD Ag front | 11.2-24 / 13.6-24 / 12.4-24 |
| Ag rear | 16.9-30 / 18.4-30 |
Hesston 70-90 Height
| 2WD Hood | 58.25 inches (147 cm) |
|---|---|
| 4WD Hood | 64.5 inches (163 cm) |
| Cab | 99.5 inches (252 cm) |
| ROPS | 101.25 inches (257 cm) |
Hesston 70-90 Weight
| 2WD | 6798 lbs (3083 kg) |
|---|---|
| 4WD | 7436 lbs (3372 kg) |
| Ballasted | 7,775 lbs (3526 kg) |
| Operating | 7,100 lbs (2WD) (3220 kg) |
Nebraska Tractor Test 1562
| Description | Diesel 12-speed 2WDApril 22 - May 9, 1985Link: Nebraska Tractor Test 1562 file / PTO performance / Drawbar performance |
|---|---|
| Fuel use | 3.9 gal/hour (14.8 l/hour) / 3.7 gal/hour (14.0 l/hour) / 3.8 gal/hour (14.4 l/hour) |
| Max power | 53.92 hp (40.2 kW) |
| Max pull | 6238 lbs (2829 kg) |
| Power at rated engine speed | 62.25 hp (46.4 kW) |
| Power at rated PTO speed | 61.94 hp (46.2 kW) |
References
| Description | 90 Series Tractors published in 1984, by Hesston |
|---|
Speeds
| Description | With 18.4-30 rear tires. / With 18.4-30 rear tires. |
|---|
Variants
| 70-90DT | 4WD |
|---|