International Harvester 644
The International Harvester 644 is a tractor produced by International Harvester. It is equipped with a 206.4 ci 3.4 L engine. The listed engine power is Diesel (listed): 60 hp / 44.7 kW. Transmission: 8 forward and 4 reverse. Operating weight: 6350 to 7078 pounds.
Overview
 | 1974 - 1980
Row-Crop tractor |
|---|
Production | |
|---|---|
Manufacturer | International Harvester |
Row-Crop tractor | |
Built in Neuss, Germany | |
International Harvester 644 Engine | |
|---|---|
International Harvester 3.4L 4-cyl diesel | |
Fuel tank | 19.6 gal
74.2 L |
Engine details ...  | |
International Harvester 644 Transmission | |
|---|---|
8-speed | |
Transmission details ...  |
International Harvester 644 Power | |
|---|---|
Engine | 60 hp
44.7 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Manual steering | |
Open operator station. |
Hydraulics | |
|---|---|
Pump flow | 7.9 gpm
29.9 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Rear lift | 6394 lbs
2900 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540/1000 |
Engine RPM | 540@1982 |
1000@2000 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 87.8 inches
223 cm |
Weight | 6350 to 7078 pounds |
Front tire | 7.50-16 |
Rear tire | 16.9-30 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 206.4 ci / 3.4 L Diesel
Manufacturer | International Harvester D-206 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 206.4 ci
3.4 L |
Bore/Stroke | 3.875x4.38 inches
98 x 111 mm |
Power | 60 hp
44.7 kW |
Rated RPM | 2150 |
Starter volts | 12 |
Transmission
Transmission — 8 forward and 4 reverse
Gears | 8 forward and 4 reverse |
 | |
Dimensions
International Harvester 644 Tires | |
|---|---|
Ag front | 7.50-16 |
9.5-24 (MFWD) | |
Ag rear | 16.9-30 |
Dimensions | |
|---|---|
Wheelbase | 87.8 inches
223 cm |
Length | 148.8 inches
377 cm |
Height | 98 inches
248 cm |
2WD Weight | 6350 lbs
2880 kg |
4WD Weight | 7078 lbs
3210 kg |
Photos
International Harvester 644 utility tractor.
International 644 with hay tedder.
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester 644 based on its 60 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester 644.
Estimated Continuous Field Runtime: 6.3 hrs
Approximately 6.3 hours of continuous field operation at ~75% rated power on a full tank (19.6 gal / 74.2 L).
Engine Crankcase Oil
Transmission & Hydraulic System
Engine Cooling System
International Harvester 644 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester 644.
Converted Equivalents:
Direct Competitor Comparison
Compare International Harvester 644 against same-era industry alternatives in the same horsepower class.
International Harvester 644
Related models
International Harvester 454E
- Power:
- 48
International Harvester 454
- Power:
- 50
- Production years:
- 1970 - 1973
International Harvester 464
- Power:
- 50
- Production years:
- 1973 - 1978
International Harvester 484
- Power:
- 50
- Production years:
- 1977 - 1982
International Harvester Mogul 45
- Power:
- 50
- Production years:
- 1911 - 1912