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International Harvester 744 Specs
The International Harvester 744 is a 2-wheel drive or 4-wheel drive row-crop tractor. This model was manufactured from 1974 to 1980. The International Harvester 744 driveline consists of 238.7 cu.in (3.9 L) International D239 4-cycle vertical 4-cylinder direct injection naturally aspirated liquid-cooled diesel engine with a rated power of 70 Hp (52.2 kW) and gear transmission with 8 forward and 4 reverse gears.
The open center hydraulic system includes a gear pump with rated fluid flow of 7.9 gal/min (29.9 l/min). The International Harvester 744 is equipped with a hydrostatic power steering system, live PTO, hydraulic wet disc brakes, 7.50x18 (2WD) or 11.2x24 (4WD) front tires, and 16.9x34 rear tires. The operating weight is 7500 lbs (3410 kg).
| Engine Specs |
Engine Model ................. International Harvester D-239
Engine Type ................. 4-cycle 4-cylinder liquid-cooled diesel
Number of Cylinders ................. 4
Displacement, cu.in (L) ................. 238.7 (3.90)
Cylinder Bore, in (mm) ................. 3.87 (98.0)
Piston Stroke, in (mm) ................. 5.06 (129.0)
Aspiration Type ................. Naturally aspirated
Rated Engine Power, hp (kW) ................. 70.0 (52.2)
Rated Engine Speed, rpm ................. 2300
Maximum Torque, Nm (ft-lbs) ................. 230 (170.4)
Torque Speed, rpm ................. 1200
Compression Ratio ................. 16:1
Fuel System ................. Direct injection
Cooling System ................. Liquid-cooled
Fuel Tank Capacity, gal (L) ................. 19.6 (74.2)
Oil Capacity, qts (L) ................. 9.5 (9.0)
Coolant Capacity, qts (L) ................. 18.5 (17.5)
Electrical System Rating, Volts ................. 12
Charging System ................. Alternator
Alternator Rating, Amps ................. 55
| Power Take-Off |
PTO Operational Type ................. Live
PTO Power, hp (kW) ................. 62.5 (46.3)
PTO Clutch Type ................. Hydraulic
PTO Speeds, rpm ................. 540/1000
| Transmission Configuration |
Transmission Type ................. Gear
Gearbox Type ................. 8F/4R
Number of Forward Gears ................. 8
Number of Reverse Gears ................. 4
Clutch Type ................. Dry disc
Clutch Disc Diameter, in (mm) ................. 11 (280)
Maximum Forward Speed, mph (kph) ................. 18.6 (29.9)
Maximum Reverse Speed, mph (kph) ................. 10.8 (17.3)
| Wheels and Tires |
Wheel Drive System ................. 2WD/4WD
Steering Configuration ................. Front Steer
Steering System ................. Hydrostatic power
Brakes Type ................. Hydraulic wet disc
Front Tire Size (2WD) ................. 7.50x18
Rear Tire Size (2WD) ................. 16.9x34
Front Tire Size (4WD) ................. 11.2x24
Rear Tire Size (4WD) ................. 16.9x34
Front Tread, in (mm) ................. 52.9-71.8 (1340-1820)
Rear Tread, in (mm) ................. 62.2-78 (1570-1980)
| Hydraulics and Hitch |
Hydraulic System Type ................. Open Center
Implement Pump Flow, gpm (Lpm) ................. 7.9 (29.9)
Hydraulic Capacity, gal (L) ................. 3.2 (12.1)
Hydraulic Pressure, Bar (psi) ................. 167 (2450)
Number of Standard Remote Valves ................. 2
3-Point Hitch Category ................. 1/2
Lift Capacity at lift pin, lbs (kg) ................. 6395 (2900)
| Dimensions and Weight |
Wheelbase (2WD), in (mm) ................. 87.8 (2230)
Wheelbase (4WD), in (mm) ................. 86.6 (2190)
Overall Length, in (mm) ................. 138.6 (3510)
Height (Cab), in (mm) ................. 100.8 (2550)
Ground Clearance, in (mm) ................. 19.1 (480)
Turning Radius (2WD), in (mm) ................. 164 (4150)
Turning Radius (4WD), in (mm) ................. 188 (4750)
Weight (2WD), lbs (kg) ................. 6775 (3080)
Weight (4WD), lbs (kg) ................. 7500 (3410)
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