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International Harvester 644 Technical Data
IH 644 Engine Specifications
Engine Model ................. International Harvester D-206
Engine Type ................. 4-stroke, 4-cylinder liquid-cooled diesel
Number of Cylinders ................. Four
Displacement, cu in (L) ................. 206.4 (3.38)
Engine Bore, in (mm) ................. 3.87 (98.0)
Engine Stroke, in (mm) ................. 4.37 (111.0)
Aspiration ................. Natural
Rated Engine Power, hp (kW) ................. 60.0 (44.7)
Rated Engine Speed, rpm ................. 2150
Maximum Torque, Nm (ft-lbs) ................. 225 (166)
Torque Speed, rpm ................. 1400
Idle Speed, rpm ................. 700-2560
Compression ................. 15:1
Fuel System ................. Direct injection
Fuel Tank Capacity, gal (L) ................. 19.6 (74.2)
Electrical System Rating, Volts ................. 12
Charging System ................. Alternator
International Harvester 644 Power Take-Off
PTO Operational Type ................. Independent
PTO Horsepower, hp (kW) ................. 50.0 (37.3)
PTO Clutch ................. Dry disc
PTO Speeds, rpm ................. 540
Transmission Configuration
Transmission Type ................. Synchromesh
Gearbox Type ................. 8F/4R
Number of Forward Gears ................. 8
Number of Reverse Gears ................. 4
Clutch ................. Dry disc
Maximum Forward Speed, mph (kph) ................. 15.6 (25.1)
Maximum Reverse Speed, mph (kph) ................. 4.9 (7.8)
IH 644 Wheels and Tires
Drive Wheels ................. 2WD/4WD
Steering Configuration ................. Front Steer
Steering System ................. Hydrostatic power
Brakes Type ................. Hydraulic wet disc
Front Tire Size (2WD) ................. 7.50-16
Rear Tire Size (2WD) ................. 16.9-30
Front Tire Size (4WD) ................. 9.5-24
Rear Tire Size (4WD) ................. 16.9-30
International Harvester 644 Hydraulic System
Hydraulic System Type ................. Open Center
Implement Pump Type ................. Gear
Implement Pump Flow, gpm (Lpm) ................. 7.9 (29.9)
3-Point Hitch Category ................. 2
Standard Lift Capacity at lift pin, lb (kg) ................. 6395
(2900)
Dimensions and Weight
Wheelbase, in (mm) ................. 87.8 (2230)
Length, in (mm) ................. 148.8 (3780)
Height, in (mm) ................. 98.1 (2480)
Turning Radius, in (mm) ................. 178 (4500)
Weight (2WD), lb (kg) ................. 6350 (2880)
Weight (4WD), lb (kg) ................. 7078 (3210)
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INTERNATIONAL TRACTORS SPECIFICATIONS |
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FARMALL TRACTORS SPECIFICATIONS |
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