For Gasoline engined version, see McCormick-Deering W-9.
McCormick-Deering WD-9
McCormick-Deering WD9 1941
McCormick-Deering WD-9 1940
Model history
Model introduced 1940
Model discontinued 1953
Model status Discontinued
Preceded by WD-40
Superseded by McCormick Super WD-9
Engine Specification
Engine make International
Engine model D-335
Fuel type diesel
Power hp 46 belt, 43 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 12.75-32 6-ply
Tractor Dimensions
Length (inches/metres) 134 in
Width (inches/meters) 68 in
Height (inches/meters) 66 in
Weight (nominal) lb/kg 6015 lb
Turning circle (nominal) inches/meters 30 ft
Wheelbase 84 in
Other info
Factories Milwaukee Works, Milwaukee, Wisconsin
Plow rating 4-14"
Nebraska Tests No. 370
Approximate Cost new in (year) $1945 (1941), $3845 (1951)
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The McCormick-Deering WD-9 was a standard tread diesel engined tractor built by the International Harvester company from 1940 to 1953 in Milwaukee, Wisconsin.

Model historyEdit

For Company history, see International Harvester.

The McCormick-Deering WD-9 was the same as the W-9, except for its diesel engine. The 335ci 4-cylinder diesel was the same basic engine used in the International TD-9 crawler, but speeded up from 1,400 to 1,500 rpm.

Timeline Edit

  • 1940 - McCormick-Deering WD-9 diesel-powered standard-tread tractor replaced the WD-40
  • 1946 - brand name shortened from McCormick-Deering to McCormick
  • 1953 - WD-9 replaced by Super WD-9

Factory locations Edit

Milwaukee Works, Milwaukee, Wisconsin

Specification Edit

See Infobox for basic details

  • Standard tires
    • Front: 30"x6" steel; 7.50-18 4-ply (1949)
    • Rear: 48"x12" steel; 14-34 6-ply (1949)

Variations and Options Edit

  • Optional tires
    • Front: 7.50-18 4 or 6-ply (1941)
    • Rear: 12.75-32 or 13.50-32 6-ply (1941); 13-34 or 14-34 6-ply (1946); 15-34 6-ply (1949); 18-26 8-ply (1950)

Serial Numbers Information Edit

Year Serial no. run
Serial no. run
Number Built[2] Notes
1940 WDCB501 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 67898[3]
Total built

Preservation Edit

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

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List of Preserved McCormick-Deering W-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
W-9 EWX 17 serial no ? date ? Perkins owner ? McCormic-Deering W-9 Perkins - EWX17 at Welland 2012 - IMG 0900 Welland Steam and Country Rally 2012 Has a Perkins engine conversion
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Make & model reg no serial no date built engine owner Image needed LHB

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Gallery Edit

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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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