International Harvester Hydro 100
The International Harvester Hydro 100 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is 104.17 hp 77.7 kW. Transmission: infinite forward and reverse (2-range). Operating weight: 12,130 lbs 5502 kg.
Engine Power
104.17 hp
77.7 kW
Fuel & Capacities
Diesel
Transmission
infinite forward and reverse (2-range)
Operating Weight
12,130 lbs
5502 kg
Overview
 | 1973 - 1976
66 SeriesRow-Crop tractor
66 Series
Row-Crop tractor |
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Production | |
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Manufacturer | International Harvester |
Row-Crop tractor | |
Built in Rock Island, Illinois, USA | |
Original price was $21,700 in 1976 | |
International Harvester Hydro 100 Engine | |
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International Harvester 7.1L 6-cyl diesel | |
Engine details ...  |
International Harvester Hydro 100 Transmission | |
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hydrostatic | |
Transmission details ...  |
International Harvester Hydro 100 Power | |
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Drawbar (claimed) | 80 hp
59.7 kW |
PTO (claimed) | 104.17 hp
77.7 kW |
Drawbar (tested) | 78.31 hp
58.4 kW |
PTO (tested) | 104.17 hp
77.7 kW |
Performance test details ...  | |
Mechanical | |
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Two-wheel drive | |
Power steering | |
Differential hydraulic dry disc brakes | |
Open operator station. Two-post ROPS and cab available. |
Hydraulics | |
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Type | open center |
Pump flow | 12 gpm
45.4 lpm |
Tractor hitch | |
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Rear Type | II |
Control | lower-link draft sensing |
Power Take-off (PTO) | |
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Rear PTO | independent |
Rear PTO Type | 540/1000 (1.375) |
Dimensions & Tires | |
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Wheelbase | 104.8 inches
266 cm |
Weight | 12,130 lbs
5502 kg |
Front tire | 10.00-16 |
Rear tire | 18.4-34 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 436 ci / 7.1 L Diesel
Manufacturer | International Harvester |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 436 ci
7.1 L |
Bore/Stroke | 4.30x5.00 inches
109 x 127 mm |
Air cleaner | dual stage dry |
Compression | 15.8:1 |
Rated RPM | 2400 |
Starter volts | 12 |
Transmission
Transmission — infinite forward and reverse (2-range) hydrostatic
Manufacturer | International Harvester |
Type | hydrostatic |
Gears | infinite forward and reverse (2-range) |
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Dimensions
International Harvester Hydro 100 Tires | |
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Ag front | 10.00-16 |
Ag rear | 18.4-34 |
Dimensions | |
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Wheelbase | 104.8 inches
266 cm |
Operating weight | 12,130 lbs
5502 kg |
Tests
Nebraska Tractor Test 1158 | |
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Diesel hydrostatic 2WD
May 7 - 18, 1974
Link: Nebraska Tractor Test 1158 file | |
PTO performance | |
Power at rated engine speed | 104.17 hp
77.7 kW |
Fuel use | 7.6 gal/hour
28.8 l/hour |
Power at rated PTO speed | 101.30 hp
75.5 kW |
Fuel use | 6.8 gal/hour
25.7 l/hour |
Drawbar performance | |
Max power | 78.31 hp
58.4 kW |
Fuel use | 7.6 gal/hour
28.8 l/hour |
Gear 5.5 MPH used for power test. | |
Max pull | 9,801 lbs
4445 kg |
Gear 2.85 MPH used for pull test. | |
Photos
International Harvester Hydro 100
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester Hydro 100 based on its 104.17 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm) | Heavy Duty | Heavy primary tillage; semi-mounted hitch recommended. |
Rotary Cutter / MowerMowing & Clearing | 10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼 | Heavy Duty | Wide swath pasture and crop residue shredding. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙 | Heavy Duty | Aggressive residue cutting in corn/cotton stubble. |
Hay BalerHay & Forage | 5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机 | Heavy Duty | High density baling; requires minimum 85 PTO HP. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester Hydro 100.
Estimated Continuous Field Runtime: 1.4 hrs
Approximately 1.4 hours of continuous field operation at ~75% rated power on a full tank (7.6 gal / 28.8 L).
Estimated 75% Load Fuel Burn~5.4 gal/hr (20.5 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
International Harvester Hydro 100 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester Hydro 100.
Converted Equivalents:
Horsepower (HP)104.2 hp
Kilowatts (kW)77.7 kW
Metric Horsepower (PS / CV)105.6 PS
Direct Competitor Comparison
Compare International Harvester Hydro 100 against same-era industry alternatives in the same horsepower class.
Current Model
International Harvester
International Harvester Hydro 100
Engine Power:104.17 hp
77.7 kW
★ Baseline Reference
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