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International Harvester 3444

International Harvester 3444 tractor
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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.
International Harvester 3444tractorbackhoe loaderengine specstransmissiondimensionspowerhydraulicsattachments
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

Rollback:30°
Dump time:3.5s
Dump angle:43°
Raise time:5.4s
Bucket width:73.4 inches (186 cm)
Boom cylinder:2.5 inches (6 cm)
Breakout force:4500 lbs (2041 kg)
Reach (dumped):28 inches (71 cm)
Bucket breakout:6000 lbs (2721 kg)
Bucket cylinder:2.5 inches (6 cm)
Clearance (dumped):103 inches (261 cm)
Lift capacity (full at pin):2700 lbs (1224 kg)

International 3121 Backhoe

Swing Arc:180°
Backhoe type:International 3121 Backhoe
Digging depth:151.5 inches (384 cm)
Loading height:121 inches (307 cm)
Bucket Rotation:173°
Reach from pivot:192 inches (487 cm)
Transport height:139 inches (353 cm)
2-Foot flat digging depth:147.75 inches (375 cm)

International 3131 Backhoe

Swing Arc:180°
Backhoe type:International 3131 Backhoe
Digging depth:165 inches (419 cm)
Loading height:132 inches (335 cm)
Bucket Rotation:173°
Reach from pivot:203 inches (515 cm)
Transport height:141 inches (358 cm)
2-Foot flat digging depth:161.5 inches (410 cm)

International 3141 Backhoe

Swing Arc:180°
Backhoe type:International 3141 Backhoe
Digging depth:174.75 inches (443 cm)
Loading height:144.5 inches (367 cm)
Bucket Rotation:173°
Reach from pivot:216 inches (548 cm)
Transport height:151 inches (383 cm)
2-Foot flat digging depth:171 inches (434 cm)

Transmission

Gear transmission

Type:gear
Gears:8 forward and 2 reverse
Clutch:279.4mm dry disc
Transmission options:8-speed gear, 8-speed mechanical shuttle, 6-speed power shuttle

Power shuttle transmission

Type:power shuttle
Gears:6 forward

Mechanical shuttle transmission

Type:mechanical shuttle
Gears:8 forward and reverse
Notes:Four gears in two ranges with mechanical shuttle.
Clutch:279.4mm 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)