International Harvester Hydro 70

The International Harvester Hydro 70 is a tractor produced by International Harvester. It is equipped with a 312 ci 5.1 L engine. The rated power output is 90 hp 67.1 kW. Transmission: infinite forward and reverse (2-range). Operating weight: 8200 lbs 3719 kg.

Overview

	1973 - 1976 Row-Crop tractor
1973 - 1976
Row-Crop tractor

Production
Manufacturer	International Harvester
Row-Crop tractor
Built in Rock Island, Illinois, USA
Original price	$14,200

International Harvester Hydro 70 Transmission
hydrostatic
Transmission details ...

International Harvester Hydro 70 Power
Engine (gross)	90 hp 67.1 kW
Drawbar (claimed)	54 hp 40.3 kW
PTO (claimed)	69 hp 51.5 kW
Drawbar (tested)	53.86 hp 40.2 kW
PTO (tested)	69.61 hp 51.9 kW
Performance test details ...

Mechanical
Two-wheel drive
Power steering
Differential dry disc brakes
Open operator station.

Hydraulics
Type	open center
Pump flow	12 gpm 45.4 lpm

Tractor hitch
Rear Type	II

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)

Dimensions & Tires
Wheelbase	103 inches 261 cm
Weight	8200 lbs 3719 kg
Front tire	7.50-16
Rear tire	15.5-38
Full dimensions and tires ...

Electrical
Charging system	alternator

Engine

Engine options
International Harvester 4.8L 6-cyl gasoline
International Harvester 5.1L 6-cyl diesel

Engine Detail — 291 ci / 4.8 L Gasoline

Manufacturer	International Harvester
Fuel Type	Gasoline
Configuration	6-cylinder, liquid-cooled
Displacement	291 ci 4.8 L
Bore/Stroke	3.75x4.39 inches 95 x 112 mm
Power (gross)	90 hp 67.1 kW
Air cleaner	dual stage dry
Compression	7.5:1
Rated RPM	2400
Starter volts	12

Engine Detail — 312 ci / 5.1 L Diesel

Manufacturer	International Harvester
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled
Displacement	312 ci 5.1 L
Bore/Stroke	3.875x4.410 inches 98 x 112 mm
Power (gross)	90 hp 67.1 kW
Air cleaner	dual stage dry
Compression	17:1
Rated RPM	2400
Starter volts	12

Transmission

Transmission — infinite forward and reverse (2-range) hydrostatic

Type	hydrostatic
Gears	infinite forward and reverse (2-range)

Dimensions

International Harvester Hydro 70 Tires
Ag front	7.50-16
Ag rear	15.5-38

Dimensions
Wheelbase	103 inches 261 cm
Length	161 inches 408 cm
Width	87 inches 220 cm
Height (steering wheel)	77 inches 195 cm
Operating weight	8200 lbs 3719 kg
Front tread	58 to 82 inches 147 to 208 cm
Rear tread	60 to 98 inches 152 to 248 cm

Tests

Tractor Tests
NTTL 1154: gasoline hydrostatic 2WD
NTTL 1155: diesel hydrostatic 2WD

Nebraska Tractor Test 1154
Gasoline hydrostatic 2WD November 14 - December 3, 1973 Link: Nebraska Tractor Test 1154 file
PTO performance
Power at rated engine speed	69.61 hp 51.9 kW
Fuel use	6.9 gal/hour 26.1 l/hour
Power at rated PTO speed	64.10 hp 47.8 kW
Fuel use	5.8 gal/hour 22.0 l/hour
Drawbar performance
Max power	53.86 hp 40.2 kW
Fuel use	7.7 gal/hour 29.1 l/hour
Max pull	8,427 lbs 3822 kg

Nebraska Tractor Test 1155
Diesel hydrostatic 2WD November 14 - December 3, 1973 Link: Nebraska Tractor Test 1155 file
PTO performance
Power at rated engine speed	69.51 hp 51.8 kW
Fuel use	5.6 gal/hour 21.2 l/hour
Power at rated PTO speed	65.41 hp 48.8 kW
Fuel use	5.3 gal/hour 20.1 l/hour
Drawbar performance
Max power	53.10 hp 39.6 kW
Fuel use	5.6 gal/hour 21.2 l/hour
Max pull	8,310 lbs 3769 kg

Photos

International Harvester Hydro 70 tractor photo