International Harvester Hydro 100 Specs ( 1973-1976 )
Overview
The International Harvester Hydro 100 is a row-crop farm tractor produced in Rock Island, Illinois, from 1973 to 1976. It features a 7.1L six-cylinder diesel engine and a hydrostatic transmission that provides infinite forward and reverse gears across two ranges. The machine is built on a 104.8-inch wheelbase and has a listed operating weight of 12,130 lbs.
Ideal Applications
Hydrostatic Drive Configuration:
The tractor utilizes an International Harvester hydrostatic transmission offering infinite speed control and 2-wheel drive mechanical operation.
Tested Power Output:
According to Nebraska Tractor Test 1158, the engine produced 104.17 hp at the PTO and achieved a maximum drawbar pull of 9,801 lbs.
Hydraulic and Hitch Specifications:
The assembly includes an open center hydraulic system with a 12 gpm pump flow and a Type II rear hitch featuring lower-link draft sensing.
Production
| Description | Row-Crop tractor / Built in Rock Island, Illinois, USA / Original price was $21,700 in 1976 |
|---|---|
| Manufacturer | International Harvester |
Engine
| Engine type | International Harvester 7.1L 6-cyl diesel |
|---|---|
| Air cleaner | dual stage dry |
| Bore/Stroke | 4.30x5.00 inches (109 x 127 mm) |
| Compression | 15.8:1 |
| Description | International Harvester / diesel / 6-cylinder / liquid-cooled |
| Displacement | 436 ci (7.1 L) |
| Rated RPM | 2400 |
| Starter volts | 12 |
| Drawbar (claimed) | 80 hp (59.7 kW) |
| Drawbar (tested) | 78.31 hp (58.4 kW) |
| PTO (claimed) | 104.17 hp (77.7 kW) |
| PTO (tested) | 104.17 hp (77.7 kW) |
Transmission
| Description | hydrostatic |
|---|---|
| Gears | infinite forward and reverse (2-range) |
| Manufacturer | International Harvester |
| Type | hydrostatic |
Mechanical
| Cab | Open operator station. Two-post ROPS and cab available. |
|---|---|
| Description | Power steering / Differential hydraulic dry disc brakes |
| Drive type | Two-wheel drive |
Hydraulics
| Pump flow | 12 gpm (45.4 lpm) |
|---|---|
| Type | open center |
Hitch
| Control | lower-link draft sensing |
|---|---|
| Rear Type | II |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/1000 (1.375) |
Dimensions & Tires
| Operating weight | 12,130 lbs (5502 kg) |
|---|---|
| Wheelbase | 104.8 inches (266 cm) |
| Front tire | 10.00-16 |
| Rear tire | 18.4-34 |
| Weight | 12,130 lbs (5502 kg) |
| Wheelbase | 104.8 inches (266 cm) |
| Ag front | 10.00-16 |
| Ag rear | 18.4-34 |
Hydro 100 Serial Numbers
| 1973 | 7501 |
|---|---|
| 1974 | 7727 |
| 1975 | 10915 |
| 1976 | 12434 |
| Description | FAQ: How to read a serial number table. |
| Location: | Hydro drive housing, left side |
Nebraska Tractor Test 1158
| Description | Diesel hydrostatic 2WDMay 7 - 18, 1974Link: Nebraska Tractor Test 1158 file / PTO performance / Drawbar performance / Gear 5.5 MPH used for power test. / Gear 2.85 MPH used for pull test. |
|---|---|
| Fuel use | 7.6 gal/hour (28.8 l/hour) / 6.8 gal/hour (25.7 l/hour) / 7.6 gal/hour (28.8 l/hour) |
| Max power | 78.31 hp (58.4 kW) |
| Max pull | 9,801 lbs (4445 kg) |
| Power at rated engine speed | 104.17 hp (77.7 kW) |
| Power at rated PTO speed | 101.30 hp (75.5 kW) |