International Harvester Hydro 100


International Harvester Hydro 100 tractor photo
1973 - 1976
66 Series
Row-Crop tractor
Series map:
966
Hydro 100
1066
113.0hp
115.6hp*
140.0hp*
*Estimated engine power for comparison only.
Production
ManufacturerInternational Harvester
Row-Crop tractor
Built in Rock Island, Illinois, USA
Original price was $21,700 in 1976
International Harvester Hydro 100 Engine
International Harvester 7.1L 6-cyl diesel
Engine details ...
International Harvester Hydro 100 Power
Drawbar (claimed)80 hp
59.7 kW
PTO (claimed)104 hp
77.6 kW
Drawbar (tested)78.31 hp
58.4 kW
PTO (tested)104.17 hp
77.7 kW
Performance test details ...
Mechanical
Two-wheel drive
Differential lockmechanical rear OptOptional
Power steering
Differential hydraulic dry disc brakes
Open operator station. Two-post ROPS and cab available.
Capacity
Fuel42 gal
159.0 L
Hydraulic system27 gal
102.2 L
Hydraulics
Typeopen center
Capacity27 gal
102.2 L
Rear valves2 OptOptional
Pump flow12 gpm
45.4 lpm
Tractor hitch
Rear TypeII
Controllower-link draft sensing
Power Take-off (PTO)
Rear PTOindependent
Rear PTO Type540/1000 (1.375)
Engine RPM540@2100
 1000@2072
Dimensions & Tires
Wheelbase104.8 inches
266 cm
Weight11470 to 12130 pounds
Front tire10.00-16
Rear tire18.4-34
Full dimensions and tires ...
Hydro 100 Serial Numbers
Location:Serial number plate on the left side of the transmission housing.
19737501
19747727
197510915
197612434

FAQ: How to read a serial number table.
Electrical
Charging systemalternator
Charging amps72
References
Hydro 100 references literature
Hydro Tractors published in 1975, by International Harvester
Page information
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Peter Easterlund - owner/author
This machine's data modified on May 27, 2026
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