Introduction
International Harvester Hydro 70 Row-Crop Tractor
The International Harvester Hydro 70 is a row-crop tractor manufactured between 1973 and 1976 in Rock Island, Illinois, USA. Designed for versatility in agricultural operations, it belongs to the International Harvester hydrostatic series, characterized by its specialized transmission system.
Engine and Performance
The tractor is powered by an International Harvester 6-cylinder diesel engine with a displacement of 312 cubic inches (5.1 liters). This liquid-cooled unit produces a gross power output of 90 horsepower at a rated speed of 2400 RPM. It features a compression ratio of 17:1 and is equipped with a dual-stage dry air cleaner.
Transmission and Hydraulics
A defining feature of the Hydro 70 is its hydrostatic transmission, which provides infinite forward and reverse speeds across two operational ranges. This allows for precise speed control without the need for traditional gear shifting. The hydraulic system is of the open-center type, delivering a pump flow of 12 gallons per minute (45.4 liters per minute).
Mechanical Specifications and Dimensions
The chassis is configured for two-wheel drive with power steering and differential dry disc brakes to assist in maneuvering. The tractor has a wheelbase of 103 inches (261 cm) and an operating weight of 8,200 lbs (3,719 kg). The front tread is adjustable from 58 to 82 inches, while the rear tread ranges from 60 to 98 inches, accommodating various row spacings.
Operator Station and PTO
The operator station is an open design, providing visibility and access to controls. The tractor is equipped with an independent rear power take-off (PTO) operating at 540 RPM. A category II three-point hitch is utilized for implement attachment.
Conclusion
The International Harvester Hydro 70 is a robust row-crop tractor suited for medium-duty agricultural applications. Its hydrostatic transmission makes it particularly effective for tasks requiring constant speed adjustments, while its 90 hp engine provides sufficient power for standard field implements.
Production Information of International Harvester, Hydro 70
- Row-Crop tractor
- Built in Rock Island, Illinois, USA
| Manufacturer | International Harvester |
|---|---|
| Original price | $14,200 |
Dimension and Tires Information of International Harvester, Hydro 70
| Rear tread | 60 to 98 inches [152 to 248 cm] |
|---|---|
| Wheelbase | 103 inches [261 cm] |
| Operating weight | 8200 lbs [3719 kg] |
| Height (steering wheel) | 77 inches [195 cm] |
| Length | 161 inches [408 cm] |
| Front tread | 58 to 82 inches [147 to 208 cm] |
| Width | 87 inches [220 cm] |
| Ag front | 7.50-16 |
|---|---|
| Ag rear | 15.5-38 |
Engine Specifications of International Harvester, Hydro 70
- International Harvester
- Liquid-cooled
- Diesel
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 312 ci [5.1 L] |
| Air cleaner | Dual stage dry |
| Bore/Stroke | 3.875x4.410 inches [98 x 112 mm] |
| Rated RPM | 2400 |
| Compression | 17:1 |
| Power (gross) | 90 hp [67.1 kW] |
Transmission Information of International Harvester, Hydro 70
Transmission variants 1
| Type | Hydrostatic |
|---|---|
| Gears | Infinite forward and reverse (2-range) |
Mechanical Specs of International Harvester, Hydro 70
- Two-wheel drive
- Open operator station.
- Power steering
- Differential dry disc brakes
Power Information of International Harvester, Hydro 70
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 (1.375) |
Hydraulics Specifications of International Harvester, Hydro 70
| Type | Open center |
|---|---|
| Pump flow | 12 gpm [45.4 lpm] |
Three-Point Hitch of International Harvester, Hydro 70
| Rear Type | II |
|---|
Electrical System of International Harvester, Hydro 70
| Charging system | Alternator |
|---|
Where it sits
With 90 HP, the International Harvester Hydro 70 sits just above Hydro 86 (77 HP) in International Harvester's range. Its power puts it in the 63th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester Hydro 70 have?
The International Harvester Hydro 70 delivers 90 HP.
What years was the International Harvester Hydro 70 produced?
The International Harvester Hydro 70 was produced in 1973-1976.
What engine does the International Harvester Hydro 70 have?
The International Harvester Hydro 70 is powered by a Diesel, 6-cylinder engine.
What transmission does the International Harvester Hydro 70 use?
The International Harvester Hydro 70 uses a Hydrostatic transmission.
How much does the International Harvester Hydro 70 weigh?
The International Harvester Hydro 70 weighs 8200 lbs [3719 kg].
Is the International Harvester Hydro 70 4WD?
The International Harvester Hydro 70 is available in 2WD.