International Harvester industrial tractors

International Harvester 3820

The International Harvester 3820 is a backhoe loader tractor produced from 1971 to 1975. It was built in Louisville, Kentucky, USA, with a total production of 601 units. It features a 101 hp (gross) International Harvester D-310 5.1L 6-cylinder liquid-cooled diesel engine, a 2-speed full power shift transmission, and 4x4 drive with planetary final drives and hydrostatic power steering. The tractor has an open operator station with optional four-post ROPS and cab. It has a fuel capacity of 31 gallons and a hydraulic system capacity of 54.5 gallons. The backhoe and loader attachments include a front-end loader with a 5000 lbs lift capacity and a backhoe with a digging depth of 195.5 inches. The tractor weighs between 15000 and 19500 pounds and rides on 15.5-25 tires.

Power-

Founded-

Model3820

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Technical Specifications

Detailed specifications and technical data for International Harvester 3820

Power

Engine (net)	84 hp (62.6 kW)
Engine (gross)	101 hp (75.3 kW)

Engine

Type	diesel
Model	International Harvester D-310
Cooling	liquid-cooled
Idle RPM	900-2300
Cylinders	6-cylinder
Rated RPM	2300
Bore/Stroke	3.875x4.375 inches (98 x 111 mm)
Power (net)	84 hp (62.6 kW)
Displacement	310 ci (5.1 L)
Oil capacity	12 qts (11.4 L)
Starter type	electric
Power (gross)	101 hp (75.3 kW)
Coolant capacity	23.7 qts (22.4 L)

Weight

Base	15000 lbs (6804 kg)
Shipping	19150 lbs (8686 kg)
Operating	19500 lbs (8845 kg)
Max rear axle	20000 lbs (9072 kg)
Max front axle	20000 lbs (9072 kg)

Capacity

Fuel	31 gal (117.3 L)
Hydraulic system	54.5 gal (206.3 L)

Hydraulics

Capacity	54.5 gal (206.3 L)
Pressure	2400 psi (165.5 bar)
Pump flow	32 gpm (main) (121.1 lpm)
Steering flow	9 gpm (34.1 lpm)
Backhoe pump flow	45.5 gpm (172.2 lpm)
Secondary pump flow	13.5 gpm (51.1 lpm)

Mechanical

Drive	4x4 4WD
Brakes	Hydraulic brakes
Steering	hydrostatic power
Final drives	planetary
Operator station	Open operator station. Four-post ROPS and cab available.

Production

Type	Backhoe loader tractor
Built in	Louisville, Kentucky, USA
Years made	1971 - 1975
Total built	601

Attachments

Backhoe	TypeInternational Backhoe Bucket force13357 lbs (6058 kg) Bucket width30 inches (76 cm) Digging depth195.5 inches (496 cm) Loading height127 inches (322 cm) Bucket Rotation171° Reach from pivot236 inches (599 cm) Transport height147 inches (373 cm) Dipperstick force7036 lbs (3191 kg) 2-Foot flat digging depth194 inches (492 cm)
Front-end loader	Dump time1s Dump angle45° Lower time3.5s Raise time5s Bucket width89.5 inches (227 cm) Reach (dumped)37 inches (93 cm) Reach (ground)72 inches (182 cm) Height (at pin)129 inches (327 cm) Clearance (dumped)102 inches (259 cm) Rollback (at carry)60° Rollback (ground line)36° Breakout force (at 500mm)10200 lbs (4626 kg) Lift capacity (full at pin)5000 lbs (2268 kg)

Transmission

Type	full power shift
Gears	2 forward and 1 reverse
Oil capacity	36 qts (34.1 L)

Backhoe & Loader

Dig depth	195.5 inches (496 cm)
Dump angle	45 inches (114 cm)

Dimensions & Tires

Width	90 inches (228 cm)
Length	272 inches (690 cm)
Rear tire	15.5-25
Wheelbase	77 inches (195 cm)
Front tire	15.5-25
Rear tread	73 inches (185 cm)
Front tread	73 inches (185 cm)
Height (ROPS)	114 inches (289 cm)
Ground clearance	14 inches (35 cm)
Height (backhoe)	147 inches (373 cm)
Industrial rear tire	15.5-25
Industrial front tire	15.5-25