For Diesel engined version, see International ID-9.
International I-9
International I-9 1949
International I-9 1949
Model history
Model introduced 1940
Model discontinued 1953
Model status Discontinued
Preceded by IK-40
Engine Specification
Engine make International
Engine model I-9
Fuel type gasoline
Power hp 49 belt, 44 drawbar
Governed rpm 1500
Displacement cu in /(litre) 335 ci
No. of Cylinders 4
Bore in (mm) 4.4 in
Stroke in (mm) 5.5 in
Cooling system water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type sliding gear
Gearbox make International
Forward 5
Reverse 1
Drive 2-WD
General Data
Linkage Category drawbar
Tyre Sizes (std/options)
Front 7.50-18 4-ply
Rear 13.00-32 6-ply
Tractor Dimensions
Length (inches/metres) 132 in
Width (inches/meters) 67 in
Height (inches/meters) 63 in
Weight (nominal) lb/kg 6310 lb
Turning circle (nominal) inches/meters 30 ft
Wheelbase 84 in
Other info
Factories Milwaukee Works, Milwaukee, Wisconsin
Plow rating
Nebraska Tests No. 369
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The Edrob/International I-9 was an industrial gasoline engined tractor built by the International Harvester company from 1940 to 1953 in Milwaukee, Wisconsin.

Model historyEdit

For Company history, see International Harvester.

The International I-9 was an industrial model based closely on the McCormick-Deering W-9 farm tractor. The main differences were the the I-9's foot throttle and heavy-duty axles, wheels, and tires.

Timeline Edit

  • 1940 - McCormick-Deering WD-9 diesel-powered standard-tread tractor replaced the WD-40, International I-9 gasoline-powered industrial added
  • 1953 - I-9 discontinued

Factory locations Edit

Milwaukee Works, Milwaukee, Wisconsin

Specification Edit

See Infobox for basic details

  • Standard tires
    • Front: 7.50-18 4-ply (1941); 7.50-18 6-ply (1946)
    • Rear: 13.00-32 6-ply (1941); 13.00-32 8-ply (1946)

Variations and Options Edit

  • Optional tires
    • Front: 7.50-18 6-ply (1941); 7.00-20 or 7.50-20 10-ply
    • Rear: 13.00-32 8-ply, 14.00-32 6 or 8-ply (1941); 18-26 10-ply (1947); 13.00-32 8-ply dual (1949)

Serial Numbers Information Edit

Year Serial no. run
Serial no. run
Number Built[2] Notes
1940 ICB501 577 Serial range includes W-9, WD-9, WR-9, WDR-9, I-9, ID-9
1941 578 2992 Number built includes W-9, WD-9, WR-9, WDR-9, I-9, ID-9
1942 2993 3650
1943 3651 5393
1944 5394 11458
1945 11459 17288
1946 17289 22713
1947 22714 29206
1948 29207 36158
1949 36159 45550
1950 45551 51738
1951 51739 59406
1952 59407 64013
1953 64014 67968[3]
Total built

Preservation Edit

No information on any individual examples of these tractors in preservation is currently available on here.

Do you know of any examples to list ?

List of Preserved International I-9 series tractors
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Make + Model No. Reg No.
(if known)
Serial No. Build-Date Engine-Type/Make Owner
(if known)
Photo Were seen/Featured in Other info
Image needed LHB

Image needed LHB

Please add any tractor with known reg or serial no. with Photo if possible.
Make & model reg no serial no date built engine owner Image needed LHB

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seen at misc info
Create a page (link) for an individual tractor by linking the reg or serial number using reg number or serial number in the relevant column. Then once saved click the red link to start the new page and add info on that tractor.

Gallery Edit

Add extra photos here please.

See also Edit

Collection related info
  • Shows and Meets - events featuring tractors and other machinery
  • Clubs Listing - List of clubs including various tractor marques
  • Collections - list of private collections with tractors (add yours)
  • Museums - includes museums featuring tractors (please add missing ones)

References / Sources Edit

  • Please supply some relevant references or sources for information for verification of data.
  1. 1.0 1.1 Wendel, C. H., 150 Years of International Harvester, Crestline Publishing, Sarasota, Florida, 1981
  2. Klancher, Lee, International Harvester Photographic History, Motorbooks International, Osceola, Wisconsin, 1996
  3. Baumheckel, Ralph and Borghoff, Kent, International Farm Equipment Product History, American Society of Agricultural Engineers, St. Joseph, Michigan, 1997

External Links Edit

  • Add any suitable (& Relevant) web links here
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