International Harvester

International Harvester 734

The International Harvester 734 is a row-crop tractor produced from 1972 to 1974. It features a 3.9L 4-cylinder diesel engine with 73 hp gross power and 66.1 hp net power. The tractor offers 8-speed and 12-speed transmission options with dry disc clutches. It is available in two- or four-wheel drive configurations with planetary final drives and mechanical rear differential lock. The 734 has a rear Type II hitch and an independent rear PTO with 540/1000 rpm options. Dimensions include a wheelbase of 83.5 inches and weights ranging from 7477 to 8245 pounds depending on configuration. Standard tires vary between 2WD and 4WD models. The cab is standard with an optional heater, and the tractor includes disc brakes and manual or power steering.
Power73 hp
Founded1972 - 1974
Model734

Technical Specifications

Detailed specifications and technical data for International Harvester 734

Power
Engine (net)66.1 hp / 49.3 kW
PTO (claimed)61.7 hp / 46.0 kW
Engine (gross)73 hp / 54.4 kW
Engine
Typediesel
ModelInternational Harvester D-239
Torque185.2 lb-ft / 251.1 Nm
Coolingliquid-cooled
Starterelectric
Cylinders4-cylinder
Fuel tank18.5 gal / 70.0 L
Rated RPM2200
Torque RPM1200
Bore/Stroke3.87x5.06 inches / 98 x 129 mm
Fuel systemdirect injection
Power (net)66.1 hp / 49.3 kW
Displacement238.7 ci / 3.9 L
Oil capacity9.5 qts / 9.0 L
Power (gross)73 hp / 54.4 kW
Starter volts12
Coolant capacity20.6 qts / 19.5 L
Compression ratio16:1
Overview
CategoryRow-Crop tractor
Production years1972 - 1974
Mechanical
Cabstandard with optional heater
DriveTwo- or four-wheel drive
BrakesDisc brakes
Steeringmanual, power
Final drivesplanetary
Differential lockmechanical rear
Transmission
8-speed
Gears8 forward and 4 reverse
Clutch280mm dry disc
Options8-speed, 12-speed
12-speed
Gears12 forward and 4 reverse
Clutch280mm dry disc
Tractor hitch
Rear TypeII
Dimensions & Tires
Width74.4 inches / 188 cm
Wheelbase83.5 inches / 212 cm
2WD Length131.5 inches / 334 cm
2WD Weight7477 lbs / 3391 kg
4WD Length136.6 inches / 346 cm
4WD Weight8245 lbs / 3739 kg
Rear tread57.5 to 77.2 inches / 146 to 196 cm
2WD Front tread51.6 to 70.1 inches / 131 to 178 cm
4WD Front tread59.1 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
Height (steering wheel)65 inches / 165 cm
Power Take-off (PTO)
Rear PTOindependent
Rear PTO Type540/1000