International Harvester industrial tractors

International Harvester 21026

The International Harvester 21026 is an industrial tractor produced from 1970 to 1971 in Rock Island, Illinois, USA. It features a turbocharged 6-cylinder 6.7L diesel engine (International Harvester DT-407) delivering 123 hp net and 127 hp gross. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds in 2 ranges. It offers two- or four-wheel drive, power steering, and differential hydraulic dry disc brakes. The 21026 has an open operator station and optional rear Type II hitch. Hydraulics provide 12 gpm total flow with an optional 17 gpm. The rear PTO is independent and optional, with 1000 rpm and 540/1000 rpm options. Dimensions include a 91 inch wheelbase, 153 inch length, and operating weight around 9,830 lbs. Tires vary for agricultural and industrial use. Electrical system includes a 32 amp alternator and two 6-volt batteries. Total production was 59 units combining standard and industrial models.

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Model21026

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Technical Specifications

Detailed specifications and technical data for International Harvester 21026

Power

Engine (net)	123 hp (91.7 kW)
PTO (claimed)	112 hp (83.5 kW)
Engine (gross)	127 hp (94.7 kW)
Drawbar (claimed)	80 hp (59.7 kW)

Engine

Type	turbocharged diesel
Model	International Harvester DT-407
Cooling	liquid-cooled
Cylinders	6-cylinder
Fuel tank	42 gal (159.0 L)
Rated RPM	2400
Air cleaner	dual-stage dry
Bore/Stroke	4.321x4.625 inches (110 x 117 mm)
Compression	17:1
Power (net)	123 hp (91.7 kW)
Displacement	406.9 ci (6.7 L)
Oil capacity	15 qts (14.2 L)
Power (gross)	127 hp (94.7 kW)
Starter volts	12
Coolant capacity	24 qts (22.7 L)

Variants

IH 1026	standard
IH 21026	industrial
Farmall 1026	row-crop

Electrical

Batteries	2
Battery volts	6
Charging amps	32
Charging system	alternator generator

Hydraulics

Total flow	12 gpm (45.4 lpm)
Optional flow	17 gpm (64.3 lpm)

Mechanical

Drive	Two- or four-wheel drive
Brakes	Differential hydraulic dry disc brakes
Power steering	Yes
Operator station	Open operator station

Production

Type	Industrial tractor
Built in	Rock Island, Illinois, USA
Total built	59 (both standard and industrial)
Manufacturer	International Harvester
Years produced	1970 - 1971

Transmission

Type	hydrostatic
Gears	infinite forward and reverse (2-range)

Tractor hitch

Rear Type	II (optional)

Dimensions & Tires

Width	91 inches (231 cm)
Length	153 inches (388 cm)
Rear axle	3.25 inch diameter (82 mm)
Wheelbase	91 inches (231 cm)
Rear tread	67 to 91 inches (170 to 231 cm)
Front tread	53 inches (134 cm)
Ag rear tire	18.4-38
Ag front tire	11L-15
Shipping weight	9,360 lbs (4245 kg)
Operating weight	9,830 lbs (4458 kg)
Clearance (drawbar)	12 inches (30 cm)
Industrial rear tire	23.1-30
Industrial front tire	7.50-20
Clearance (front axle)	22 inches (55 cm)
Height (steering wheel)	84 inches (213 cm)