International Harvester industrial tractors

International Harvester I-9

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.

Power-

Founded-

ModelI-9

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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