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International Harvester I-9

International Harvester I-9 tractor
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The International Harvester I-9 is an industrial tractor produced from 1941 to 1953 by International Harvester in Milwaukee, Wisconsin, USA. It is part of the 9-series tractors which included six models: W-9, WD-9, WR-9, WDR-9, I-9, and ID-9. The I-9 features a 5.5L 4-cylinder gasoline engine, a 5-speed sliding gear transmission, and two-wheel drive with worm-type gear steering. It has an open operator station and was built primarily for industrial use with different gear ratios and foot-operated throttle. The tractor weighs 6426 lbs and has agricultural tires sized 7.50-18 front and 14-32 rear.
International Harvester I-9industrial tractor5.5L gasoline engine5-speed transmission1941 tractor1950s tractorIH I-9 specs
Power-
Founded-
ModelI-9

Technical Specifications

Detailed specifications and technical data for International Harvester I-9

Power

Belt (claimed):45 hp (33.6 kW)
Drawbar (claimed):35 hp (26.1 kW)

Engine

Type:International Harvester 5.5L 4-cyl gasoline
Notes:The gasoline engine was standard on the I-9, and an option on the W-9 until 1947, when it became the standard engine.
Aux. fuel:0.875 gal (3.3 L)
Fuel tank:36 gal (136.3 L)
Rated RPM:1500
Bore/Stroke:4.40x5.50 inches (112 x 140 mm)
Compression:5.4:1
Displacement:334.5 ci (5.5 L)
Engine detail:International Harvester gasoline 4-cylinder liquid-cooled vertical I-head
Coolant capacity:40 qts (37.9 L)

Variants

I-9:gas
W-9:farm tractor
ID-9:diesel

Mechanical

Drive:Two-wheel drive
Steering:worm-type gear
Operator station:Open operator station

Production

Type:Industrial tractor
Notes:The 9-series tractors consisted of six models, the W-9, WD-9, WR-9, WDR-9, I-9, and ID-9. The D models are diesel. The R is a rice model, with larger fenders and a hand-clutch to allow driving while standing. The I models were industrial, with different gear ratios and foot-operated throttle.
Built in:Milwaukee, Wisconsin, USA
Total built:67,418
Manufacturer:International Harvester
Original price:$3,300
Years produced:1941 - 1953

Transmission

Type:sliding gear
Gears:5 forward and 1 reverse

Dimensions & Tires

Width:68.5 inches (173 cm)
Height:66 inches (167 cm)
Length:134 inches (340 cm)
Weight:6426 lbs (2914 kg)
Ag rear tires:14-32
Ag front tires:7.50-18

I-9 Serial Numbers

1940:501
1941:578
1942:3003
1943:3651
1944:5501
1945:11459
1946:17294
1947:22715
1948:29207
1949:36159
1950:45551
1951:51739
1952:59407
1953:64014
1954:67969

Related Models

International Harvester ID-9

Model:ID-9

International Harvester W-9

Model:W-9