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International Harvester industrial tractors

International Harvester 3400A

The International Harvester 3400A is a backhoe loader tractor produced from 1972 to 1975. It features engine options of a 2.9L 3-cylinder diesel or a 2.9L 4-cylinder gasoline engine, with power outputs ranging from 50 to 60 hp gross. The tractor offers multiple transmission options including an 8-speed shuttle, hydrostatic, and 8-speed gear transmissions. It has a wheelbase of 80.5 inches and various tire options. The front-end loader has a lift capacity of 3000 lbs and breakout force of 5500 lbs, while the backhoe offers a digging depth of 172 inches and a bucket width of 24 inches. The tractor includes mechanical rear differential lock, power steering, and independent disc brakes, with a four-post ROPS and optional cab.
Power-
Founded-
Model3400A
International Harvester 3400A tractor
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Technical Specifications

Detailed specifications and technical data for International Harvester 3400A

Power
Engine (net)53 hp (39.5 kW)
Engine (gross)60 hp (44.7 kW)
Gas PTO (claimed)40 hp (29.8 kW)
Diesel PTO (claimed)38 hp (28.3 kW)
Gas Drawbar (claimed)32 hp (23.9 kW)
Diesel Drawbar (claimed)30 hp (22.4 kW)
Tires
Industrial rear14.9-24, 17.5L-24
Industrial front7.50-16, 11L-16
Engine
OptionsInternational Harvester 2.9L 3-cyl diesel, International Harvester 2.9L 4-cyl gasoline
Idle RPM900-2400
Fuel tank24 gal (90.8 L)
Rated RPM2400
Bore/Stroke3.875x5.060 inches (98 x 129 mm)
Compression7.2:1
Power (net)50 hp (37.3 kW)
Displacement179 ci (2.9 L)
Oil capacity8 qts (7.6 L)
Power (gross)58 hp (43.3 kW)
Starter volts12
Coolant capacity12.5 qts (11.8 L)
Idle RPM gasoline900-2400
Rated RPM gasoline2400
Bore/Stroke gasoline3.562x4.39 inches (90 x 112 mm)
Power (net) gasoline53 hp (39.5 kW)
Displacement gasoline175 ci (2.9 L)
Oil capacity gasoline7 qts (6.6 L)
Power (gross) gasoline60 hp (44.7 kW)
Starter volts gasoline12
Coolant capacity gasoline11.5 qts (10.9 L)
International Harvester D-179 diesel3-cylinder, liquid-cooled
International Harvester C-175 gasoline4-cylinder, liquid-cooled
Dimensions
Width71 inches (180 cm) (Width of tractor at minimum tread setting.)
Wheelbase80.5 inches (204 cm)
Rear tread60/64 inches (152/162 cm)
Front tread62 inches (157 cm)
Height (ROPS)111 inches (281 cm)
Max rear axle12000 lbs (5443 kg)
Max front axle10000 lbs (4536 kg)
Height (backhoe)160 inches (406 cm)
Clearance (front axle)12.6 inches (32 cm)
Height (steering wheel)66 inches (167 cm)
Electrical
Battery AH78 (gas), 172 (diesel)
Battery volts12
Charging amps32
Charging systemalternator
Hydraulics
Total flow25.2 gpm (95.4 lpm)
Steering flow2.7 gpm (10.2 lpm)
Mechanical
ROPSFour-post ROPS. Cab optional.
DriveTwo-wheel drive
BrakesIndependent disc brakes
Power steeringYes
Differential lockmechanical rear
Production
TypeBackhoe loader tractor
Years made1972 - 1975
ManufacturerInternational Harvester
Transmission
Gear
Typegear
Gears8 forward and 4 reverse
NotesFour gears in two ranges.
Options8-speed shuttle, hydrostatic, 8-speed gear
Shuttle
Typeshuttle
Gears8 forward and reverse
NotesFour gears in two ranges with shuttle.
Clutchdry disc
Hydrostatic
Typehydrostatic
Gearsinfinite forward and reverse (2-range)
Backhoe & Loader
Dump time2s
Swing arc180°
Dump angle45°
Lower time2.3s
Raise time4s
Backhoe typeInternational Backhoe
Bucket force11324 lbs (5136 kg)
Bucket width76.5 inches (194 cm)
Loading height152 inches (386 cm)
Reach (dumped)38 inches (96 cm)
Bucket rotation178°
Height (at pin)127.6 inches (324 cm)
Front-end loaderInternational Loader
Reach from pivot218 inches (553 cm)
Dipperstick force6341 lbs (2876 kg)
Clearance (dumped)104 inches (264 cm)
Backhoe bucket width24 inches (60 cm)
Loader lift capacity3000 lbs lift (full at pin) (1360 kg)
Backhoe digging depth172 inches (436 cm)
Loader breakout force5500 lbs breakout (at pin) (2494 kg)
Rollback (ground line)30°
Backhoe transport height160 inches (406 cm)
2-Foot flat digging depth171 inches (434 cm)

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