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International Harvester 3820

International Harvester 3820 tractor
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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.
International Harvester 3820tractorbackhoe loaderspecificationsenginetransmissiondimensionshydraulicsattachments
Power-
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Model3820

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

Type:International Backhoe
Bucket force:13357 lbs (6058 kg)
Bucket width:30 inches (76 cm)
Digging depth:195.5 inches (496 cm)
Loading height:127 inches (322 cm)
Bucket Rotation:171°
Reach from pivot:236 inches (599 cm)
Transport height:147 inches (373 cm)
Dipperstick force:7036 lbs (3191 kg)
2-Foot flat digging depth:194 inches (492 cm)

Front-end loader

Dump time:1s
Dump angle:45°
Lower time:3.5s
Raise time:5s
Bucket width:89.5 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

Related Models

International Harvester 3800

Model:3800