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International Harvester Hydro 70

International Harvester Hydro 70 tractor
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The International Harvester Hydro 70 is a row-crop tractor produced from 1973 to 1976 by 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 engine, both producing 90 hp gross. It has a wheelbase of 103 inches and an operating weight of 8200 lbs. The Hydro 70 includes power steering, differential dry disc brakes, and an open operator station. It has a rear Type II hitch and an independent 540 rpm rear PTO. The fuel tank capacity is 33 gallons for gasoline and 31 gallons for diesel. The tractor uses 7.50-16 front tires and 15.5-38 rear tires. The Hydro 70 was succeeded by the Hydro 86 model.
International HarvesterHydro 70tractorspecificationsenginetransmissionpowerdimensionshydraulicsPTOrow-crop tractor
Power90 hp
Founded1973 - 1976
ModelHydro 70

Technical Specifications

Detailed specifications and technical data for International Harvester 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

Rear tire:15.5-38
Front tire:7.50-16

Engine

Options:International Harvester 4.8L 6-cyl gasoline, International Harvester 5.1L 6-cyl diesel
Diesel engine:5.1L 6-cylinder liquid-cooled
Gasoline engine:4.8L 6-cylinder liquid-cooled
Diesel rated RPM:2400
Diesel air cleaner:dual stage dry
Diesel bore/stroke:3.875x4.410 inches (98 x 112 mm)
Diesel compression:17:1
Fuel tank (diesel):31 gal (117.3 L)
Gasoline rated RPM:2400
Diesel displacement:312 ci (5.1 L)
Diesel power (gross):90 hp (67.1 kW)
Diesel starter volts:12
Fuel tank (gasoline):33 gal (124.9 L)
Gasoline air cleaner:dual stage dry
Gasoline bore/stroke:3.75x4.39 inches (95 x 112 mm)
Gasoline compression:7.5:1
Gasoline displacement:291 ci (4.8 L)
Gasoline power (gross):90 hp (67.1 kW)
Gasoline starter volts:12

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

Type:Row-Crop tractor
Built in:Rock Island, Illinois, USA
Years made:1973 - 1976
Manufacturer: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)

Related Models

International Harvester Hydro 86

Model:Hydro 86