International Harvester industrial tractors
International Harvester 3444
The International Harvester 3444 is a backhoe loader tractor produced from 1970 to 1973. It features gasoline and diesel 4-cylinder engines with about 39 hp net power, multiple transmission options including 8-speed gear and shuttles, and a variety of attachments including front-end loaders and backhoes. It has a wheelbase of 72.5 inches, weighs approximately 5700 lbs, and offers mechanical rear differential lock, power steering, and disc brakes. The tractor is designed for farm and loader applications with open operator station.
Power-
Founded-
Model3444
Technical Specifications
Detailed specifications and technical data for International Harvester 3444
Power
| Engine (net) | 39 hp (29.1 kW) |
|---|---|
| Engine (gross) | 43.5 hp (32.4 kW) |
| Gas PTO (claimed) | 36.5 hp (27.2 kW) |
| Diesel PTO (claimed) | 36 hp (26.8 kW) |
| Gas Drawbar (claimed) | 31.4 hp (23.4 kW) |
| Diesel Drawbar (claimed) | 32.6 hp (24.3 kW) |
Engine
| Torque | 116 lb-ft (157.3 Nm) |
|---|---|
| Starter | electric |
| Idle RPM | 900-2000 |
| Rated RPM | 2000 |
| Torque RPM | 1300 |
| Air cleaner | oil bath |
| Bore/Stroke | 3.375x4.00 inches (86 x 102 mm) |
| Compression | 6.3:1 |
| Power (net) | 39 hp (29.1 kW) |
| Pre-heating | glow plugs |
| Displacement | 144 ci (2.4 L) |
| Oil capacity | 7.5 qts (7.1 L) |
| Power (gross) | 43.5 hp (32.4 kW) |
| Starter volts | 12 |
| Torque diesel | 113 lb-ft (153.2 Nm) |
| Engine options | International Harvester 2.4L 4-cyl gasoline, International Harvester 2.5L 4-cyl diesel |
| Starter diesel | electric |
| Idle RPM diesel | 900-2000 |
| Coolant capacity | 10 qts (9.5 L) |
| Rated RPM diesel | 2000 |
| Torque RPM diesel | 1400 |
| Air cleaner diesel | oil bath |
| Bore/Stroke diesel | 3.50x4.00 inches (89 x 102 mm) |
| Compression diesel | 22.6:1 |
| Power (net) diesel | 39 hp (29.1 kW) |
| Displacement diesel | 154 ci (2.5 L) |
| Oil capacity diesel | 6.5 qts (6.2 L) |
| Power (gross) diesel | 43.5 hp (32.4 kW) |
| Starter volts diesel | 12 |
| Coolant capacity diesel | 10 qts (9.5 L) |
| International Harvester BC-144 | gasoline, 4-cylinder, liquid-cooled |
| International Harvester BD-154 | diesel, 4-cylinder, liquid-cooled |
Weight
| Shipping | 5700 lbs (loader tractor) (2585 kg) |
|---|---|
| Max rear axle | 9000 lbs (4082 kg) |
| Max front axle | 10000 lbs (4536 kg) |
Hydraulics
| Type | open center |
|---|---|
| Pressure | 2000 psi (137.9 bar) |
| Pump flow | 17 gpm (64.3 lpm) |
| Steering flow | 9 gpm (34.1 lpm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Disc brakes |
| Final drives | bull gear |
| Power steering | Yes |
| Operator station | Open operator station |
| Differential lock | mechanical rear |
Production
| Type | Backhoe loader tractor |
|---|---|
| Manufacturer | International Harvester |
| Years produced | 1970 - 1973 |
Attachments
| Attachment overview | Front-end loader, Backhoe |
|---|---|
| International 3444 Loader | Rollback30° Dump time3.5s Dump angle43° Raise time5.4s Bucket width73.4 inches (186 cm) Boom cylinder2.5 inches (6 cm) Breakout force4500 lbs (2041 kg) Reach (dumped)28 inches (71 cm) Bucket breakout6000 lbs (2721 kg) Bucket cylinder2.5 inches (6 cm) Clearance (dumped)103 inches (261 cm) Lift capacity (full at pin)2700 lbs (1224 kg) |
| International 3121 Backhoe | Swing Arc180° Backhoe typeInternational 3121 Backhoe Digging depth151.5 inches (384 cm) Loading height121 inches (307 cm) Bucket Rotation173° Reach from pivot192 inches (487 cm) Transport height139 inches (353 cm) 2-Foot flat digging depth147.75 inches (375 cm) |
| International 3131 Backhoe | Swing Arc180° Backhoe typeInternational 3131 Backhoe Digging depth165 inches (419 cm) Loading height132 inches (335 cm) Bucket Rotation173° Reach from pivot203 inches (515 cm) Transport height141 inches (358 cm) 2-Foot flat digging depth161.5 inches (410 cm) |
| International 3141 Backhoe | Swing Arc180° Backhoe typeInternational 3141 Backhoe Digging depth174.75 inches (443 cm) Loading height144.5 inches (367 cm) Bucket Rotation173° Reach from pivot216 inches (548 cm) Transport height151 inches (383 cm) 2-Foot flat digging depth171 inches (434 cm) |
Transmission
| Gear transmission | Typegear Gears8 forward and 2 reverse Clutch279.4mm dry disc |
|---|---|
| Transmission options | 8-speed gear, 8-speed mechanical shuttle, 6-speed power shuttle |
| Power shuttle transmission | Typepower shuttle Gears6 forward |
| Mechanical shuttle transmission | Typemechanical shuttle Gears8 forward and reverse NotesFour gears in two ranges with mechanical shuttle. Clutch279.4mm dry disc |
Tractor hitch
| Rear Type | I (Optional) |
|---|
Dimensions & Tires
| Width | 67 inches (Minimum width of tractor) (170 cm) |
|---|---|
| Length | 174 inches (loader tractor) (441 cm) |
| Rear tire | 14.9-24 |
| Wheelbase | 72.5 inches (184 cm) |
| Front tire | 7.50-16 |
| Rear tread | 60/64 inches (152/162 cm) |
| Front tread | 54 inches (137 cm) |
| Height (backhoe) | 139 inches (353 cm) |
| Clearance (rear axle) | 14 inches (35 cm) |
| Clearance (front axle) | 13 inches (33 cm) |
| Height (steering wheel) | 61 inches (154 cm) |
Power Take-off (PTO)
| Clutch | 229mm dry disc (live) |
|---|---|
| Live PTO | live (Optional) |
| Rear PTO | transmission (Optional) |
| Engine RPM | 540@2000 |
| Rear PTO Type | 540 (1.375) |
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