Tractor · 1973Unverified
International Harvester Hydro 70
International Harvester Hydro 70 — 66 Series · 90 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
90 hp
Max power
40.2 kW
Weight
7450 to 8200 pounds
Hover a source tag to verify
Overview
ManufacturerInternational HarvesterReference
Row-Crop tractorReference
Built in Rock Island, Illinois, USAReference
Original price$14,200Reference
Two-wheel driveReference
Power steeringReference
Differential dry disc brakesReference
Open operator station.Reference
Engine
International Harvester 4.8L 6-cyl gasolineReference
International Harvester 5.1L 6-cyl dieselReference
Engine (gross)67.1 kWReference
Drawbar (claimed)40.3 kWReference
Drawbar (tested)40.2 kWReference
International Harvester C-291Reference
gasolineReference
6-cylinderReference
liquid-cooled inineReference
Displacement4.8 LReference
Bore/Stroke95 x 112 mmReference
Power (gross)67.1 kWReference
Air cleanerdual stage dryReference
Compression7.5:1Reference
Rated RPM2400Reference
Idle RPM900-2400Reference
Starter volts12Reference
Oil capacity8.5 LReference
Coolant capacity19.9 LReference
International Harvester D-312Reference
dieselReference
liquid-cooled inlineReference
Displacement5.1 LReference
Bore/Stroke98 x 112 mmReference
Compression17:1Reference
Oil capacity11.4 LReference
Power at rated engine speed51.9 kWReference
Max power40.2 kWReference
Power at rated engine speed51.8 kWReference
Max power39.6 kWReference
Transmission
hydrostaticReference
TypehydrostaticReference
Gearsinfinite forward and reverse (2-range)Reference
Oil capacity75.7 LReference
PTO & Hydraulics
PTO (claimed)51.5 kWReference
PTO (tested)51.9 kWReference
Hydraulic system75.7 LReference
Typeopen centerReference
Capacity75.7 LReference
Rear valves2Reference
Pump flow22.7 lpmReference
Rear TypeIIReference
Rear PTOindependentReference
Rear PTO Type540 (1.375)Reference
Engine RPM540@1986Reference
Power at rated PTO speed47.8 kWReference
Power at rated PTO speed48.8 kWReference
Capacities
Gas Fuel124.9 LReference
Diesel Fuel117.3 LReference
Dimensions
Wheelbase261 cmReference
Weight7450 to 8200 poundsReference
Front tire7.50-16Reference
Rear tire15.5-38Reference
Ag front7.50-16Reference
Ag rear15.5-38Reference
Length408 cmReference
Width220 cmReference
Height (steering wheel)195 cmReference
Height (exhaust)264 cmReference
Clearance (drawbar)35 cmReference
Front tread147 to 208 cmReference
Rear tread142 to 243 cmReference
Rear tread142 to 274 cmReference
Gas Shipping3379 kgReference
Diesel Shipping3578 kgReference
Operating3719 kgReference
Hydro 70 Serial Number Location
Tractor clutch housing on right side.Reference
Hydro 70 Serial Numbers
19737501Reference
19747570Reference
19758681Reference
197610094Reference
FAQ: How to read a serial number table.Reference
Electrical
Charging systemalternatorReference
Charging amps37Reference
Test results
NTTL 1154: gasoline hydrostatic 2WDReference
NTTL 1155: diesel hydrostatic 2WDReference
Gasoline hydrostatic 2WDNovember 14 - December 3, 1973Link: Nebraska Tractor Test 1154 fileReference
PTO performanceReference
Fuel use26.1 l/hourReference
Fuel use22.0 l/hourReference
Drawbar performanceReference
Fuel use29.1 l/hourReference
Max pull3822 kgReference
Diesel hydrostatic 2WDNovember 14 - December 3, 1973Link: Nebraska Tractor Test 1155 fileReference
Fuel use21.2 l/hourReference
Fuel use20.1 l/hourReference
Max pull3769 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.