Introduction
International Harvester 734: Row-Crop Tractor
The International Harvester 734 is a row-crop tractor produced between 1972 and 1974. Designed for versatility in agricultural operations, it was available in both two-wheel and four-wheel drive configurations.
Engine and Performance
The tractor is powered by the International Harvester D-239, a 3.9-liter, 4-cylinder liquid-cooled diesel engine. It delivers a gross power output of 73 hp (54.4 kW) and a net power of 66.1 hp (49.3 kW). The engine utilizes direct injection and maintains a compression ratio of 16:1, with a rated operating speed of 2200 RPM and peak torque of 185.2 lb-ft reached at 1200 RPM.
Transmission and Drivetrain
Operators have a choice between two transmission configurations: an 8-speed (8 forward, 4 reverse) or a 12-speed (12 forward, 4 reverse) system. Both options feature a 280mm dry disc clutch. Power is delivered to the ground through planetary final drives, supported by a mechanical rear differential lock to enhance traction in varying field conditions.
Hydraulics and Power Take-Off
The 734 is equipped with an independent rear power take-off (PTO) capable of operating at both 540 and 1000 RPM. The rear hitch is a Category II system, providing compatibility with a wide range of standard agricultural implements.
Mechanical and Operator Environment
The tractor features power-assisted steering and disc brakes for operational control. The unit includes a standard cab, which could be equipped with an optional heater for climate control. The 2WD model has a base weight of 7477 lbs, while the 4WD variant weighs 8245 lbs.
Conclusion
The International Harvester 734 serves as a durable mid-range row-crop tractor. Its combination of multiple transmission options, independent PTO, and available 4WD makes it suitable for diverse farming tasks requiring reliable power and field maneuverability.
International Harvester 734 Manuals & Documentation
Download the manuals and documentation available for the International Harvester 734: repair and workshop manuals, operator's handbooks, spare-parts catalogs and technical leaflets — free PDF files.
Archive documentation provided for reference, hosted by Tractor-Info.
Production Information of International Harvester, 734
- Row-Crop tractor
| Manufacturer | International Harvester |
|---|
Dimension and Tires Information of International Harvester, 734
| 4WD Weight | 8245 lbs [3739 kg] |
|---|---|
| Wheelbase | 83.5 inches [212 cm] |
| Height (steering wheel) | 65 inches [165 cm] |
| Width | 74.4 inches [188 cm] |
| 2WD Length | 131.5 inches [334 cm] |
| 2WD Front tread | 51.6 to 70.1 inches [131 to 178 cm] |
| 2WD Weight | 7477 lbs [3391 kg] |
| 4WD Length | 136.6 inches [346 cm] |
| Rear tread | 57.5 to 77.2 inches [146 to 196 cm] |
| 4WD Front tread | 59.1 inches [150 cm] |
| 2WD Standard tires (ag) | Front: 7.50x16. Rear: 16.9/14x34 |
|---|---|
| 4WD Standard tires (ag) | Front: 11.2/10x24. Rear: 16.9/14x34 |
Engine Specifications of International Harvester, 734
- International Harvester D-239
- Liquid-cooled
- Diesel
- 4-cylinder
| Oil capacity | 9.5 qts [9.0 L] |
|---|---|
| Starter volts | 12 |
| Power (gross) | 73 hp [54.4 kW] |
| Coolant capacity | 20.6 qts [19.5 L] |
| Compression | 16:1 |
| Rated RPM | 2200 |
| Fuel system | Direct injection |
| Displacement | 238.7 ci [3.9 L] |
| Power (net) | 66.1 hp [49.3 kW] |
| Bore/Stroke | 3.87x5.06 inches [98 x 129 mm] |
| Starter | Electric |
| Torque RPM | 1200 |
| Torque | 185.2 lb-ft [251.1 Nm] |
Transmission Information of International Harvester, 734
Transmission variants 1
| Gears | 8 forward and 4 reverse |
|---|---|
| Clutch | 280mm dry disc |
Transmission variants 2
| Gears | 12 forward and 4 reverse |
|---|---|
| Clutch | 280mm dry disc |
- 8-speed
- 12-speed
Mechanical Specs of International Harvester, 734
- Cab standard with optional heater.
- Two- or four-wheel drive
- Disc brakes
| Steering | Power |
|---|---|
| Steering | Manual |
| Final drives | Planetary |
| Differential lock | Mechanical rear |
Power Information of International Harvester, 734
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Three-Point Hitch of International Harvester, 734
| Rear Type | II |
|---|
Where it sits
With 73 HP, the International Harvester 734 sits just below 834 (81 HP) in International Harvester's range. Its power puts it in the 53th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 734 have?
The International Harvester 734 delivers 73 HP.
What years was the International Harvester 734 produced?
The International Harvester 734 was produced in 1972-1974.
What engine does the International Harvester 734 have?
The International Harvester 734 is powered by a Diesel, 4-cylinder engine.
How much does the International Harvester 734 weigh?
The International Harvester 734 weighs 8245 lbs [3739 kg].
Is the International Harvester 734 4WD?
The International Harvester 734 is available in 2WD/4WD.