Farmall
Farmall Hydro 70
The Farmall Hydro 70 is a row-crop tractor built by Farmall, part of International Harvester, in Rock Island, Illinois, USA. It features a hydrostatic transmission with infinite forward and reverse speeds in two ranges. The tractor is powered by either a 4.8L 6-cylinder gasoline or a 5.1L 6-cylinder diesel International Harvester engine, both rated at 90 hp gross. It has a fuel tank capacity of 33 gallons for gasoline and 31 gallons for diesel. The Hydro 70 offers 54 hp drawbar power claimed and 69 hp PTO power claimed, with tested values close to these. It includes two-wheel drive, power steering, differential dry disc brakes, and an open operator station. The hydraulic system is open center with a 12 gpm pump flow. The tractor hitch is category II with an independent 540 rpm rear PTO. Dimensions include a 103-inch wheelbase, 161-inch length, 87-inch width, and 77-inch height at the steering wheel, with an operating weight of 8200 lbs. Tires are 7.50-16 front and 15.5-38 rear. The electrical system uses an alternator charging system. Serial numbers range from 1973 to 1976 with specific numbers listed, and the serial number location is on the tractor clutch housing on the right side.
Power90 hp
Founded1973 - 1976
ModelHydro 70
Technical Specifications
Detailed specifications and technical data for Farmall Hydro 70
Power
| PTO (tested) | 69.61 hp (51.9 kW) |
|---|---|
| PTO (claimed) | 69 hp (51.5 kW) |
| Engine (gross) | 90 hp (67.1 kW) |
| Drawbar (tested) | 53.86 hp (40.2 kW) |
| Drawbar (claimed) | 54 hp (40.3 kW) |
Tires
| Ag rear | 15.5-38 |
|---|---|
| Ag front | 7.50-16 |
| Rear tire | 15.5-38 |
| Front tire | 7.50-16 |
Engine
| Rated RPM | 2400 |
|---|---|
| Air cleaner | dual stage dry |
| Bore/Stroke | 3.75x4.39 inches (95 x 112 mm) |
| Compression | 7.5:1 |
| Displacement | 291 ci (4.8 L) |
| Power (gross) | 90 hp (67.1 kW) |
| Starter volts | 12 |
| Engine options | International Harvester 4.8L 6-cyl gasoline; International Harvester 5.1L 6-cyl diesel |
| Rated RPM diesel | 2400 |
| Air cleaner diesel | dual stage dry |
| Bore/Stroke diesel | 3.875x4.410 inches (98 x 112 mm) |
| Compression diesel | 17:1 |
| Fuel tank (diesel) | 31 gal (117.3 L) |
| Displacement diesel | 312 ci (5.1 L) |
| Fuel tank (gasoline) | 33 gal (124.9 L) |
| Power (gross) diesel | 90 hp (67.1 kW) |
| Starter volts diesel | 12 |
| International Harvester diesel engine | 6-cylinder, liquid-cooled |
| International Harvester gasoline engine | 6-cylinder, liquid-cooled |
Dimensions
| Width | 87 inches (220 cm) |
|---|---|
| Length | 161 inches (408 cm) |
| Wheelbase | 103 inches (261 cm) |
| Rear tread | 60 to 98 inches (152 to 248 cm) |
| Front tread | 58 to 82 inches (147 to 208 cm) |
| Operating weight | 8200 lbs (3719 kg) |
| Height (steering wheel) | 77 inches (195 cm) |
Electrical
| Charging system | alternator |
|---|
Hydraulics
| Type | open center |
|---|---|
| Pump flow | 12 gpm (45.4 lpm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Differential dry disc brakes |
| Steering | Power steering |
| Operator station | Open operator station. |
Production
| Built in | Rock Island, Illinois, USA |
|---|---|
| Manufacturer | Farmall (a part of International Harvester) |
| Original price | $14,200 |
Transmission
| Type | hydrostatic |
|---|---|
| Gears | infinite forward and reverse (2-range) |
Tractor hitch
| Rear Type | II |
|---|
Serial Numbers
| 1973 | 7501 |
|---|---|
| 1974 | 7570 |
| 1975 | 8681 |
| 1976 | 10094 |
| Serial Number Location | Tractor clutch housing on right side. |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540 (1.375) |