McCormick-Deering WD-40
McCormick-Deering WD-40
McCormick-Deering WD-40 1935
Model history
Model introduced 1935
Model discontinued 1940
Model status Discontinued
No. produced 10,059 total WA-40, WK-40, WD-40
Superseded by McCormick-Deering WD-9
Engine Specification
Engine make International
Fuel type diesel
Power hp 49 belt, 37 drawbar
Governed rpm 1100 (1200 in 1937)
Displacement cu in /(litre) 461 ci
No. of Cylinders 4
Bore in (mm) 4.75 in
Stroke in (mm) 6.5 in
Cooling system Water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type sliding gear
Gearbox make International
Forward 3 (4 in 1938)
Reverse 1
Drive 2-WD
General Data
Linkage Category Drawbar
Tyre Sizes (std/options)
Front steel 34"x6"
Rear steel 50"x12"
Tractor Dimensions
Length (inches/metres) 142 in
Width (inches/meters) 65 in
Height (inches/meters) 71 in
Weight (nominal) lb/kg 7550 lb
Turning circle (nominal) inches/meters 34 ft
Wheelbase 85 in
Other info
Factories Milwaukee Works
Plow rating 4
Nebraska Tests No. 246
Approximate Cost new in (year) $2210 (1940)
This box: view · talk

The McCormick-Deering WD-40 was built by International Harvester from 1935 to 1940.

Model historyEdit

For company history see main International Harvester article.

The gasoline/kerosene-powered McCormick-Deering WA-40 wheatland-style standard-tread tractor replaced the McCormick-Deering 15-30 (22-36). The same basic tractor was also built with a 461 ci diesel engine as the McCormick-Deering WD-40. The WD-40 was the first diesel-powered wheel tractor manufactured in the USA. Similar industrial models were the McCormick-Deering IA-40 and ID-40 and International IK-40 and ID-40.

Timeline Edit

Factory locations Edit

International Harvester Milwaukee Works, Milwaukee, Wisconsin, USA


See infobox for basic details

Variations and Options Edit

  • 4-speed transmission replaced 3-speed in 1938
  • Available rubber tires
    • 1935
      • Front: 7.50-18
      • Rear: 12.75-28, 12.75-32
    • 1937
      • Front: 7.50-20
      • Rear: 12.75-32
    • 1938
      • Front: 7.50-20
      • Rear: 12.75-32, 13.50-32

Serial numbers and production figuresEdit

Year Serial run[1] Number Built[2] Notes (Total WA-40, WK-40, and WD-40 built 10,059).
1935 WDC501-1440 940 WA-40 & WD-40
1936 WDC1441-5119 3679 WA-40 & WD-40
1937 WDC5120-7664 2545 WK-40 & WD-40
1938 WDC7665-9755 2091 WK-40 & WD-40
1939 WDC9756-10322 567 WK-40 & WD-40
1940 WDC10323-10559 275 WK-40 & WD-40

Preserved modelsEdit

Neal & Shirley Stone, Wisconsin Dells, Wisconsin own an unrestored WD-40.[3]

List of Preserved International W -40 series tractors
view  talk  edit

Make + Model No. Reg No.
(if known)
Serial No. Build-Date Engine-Type/Make Owner
(if known)
Photo Were seen/Featured in Other info
McCormick-Deering WK-40 76 RNM WKC2277 1936 International Brian Bowles, Wrangle
International WK40 - IMG 7118
Carrington Steam and Tractor Rally 2011 Restored, Originally supplied new on steel wheels
McCormick-Deering W-40 unregistered WKC10053 1939 International 298 FFB Carl Hargreaves, Lancashire
Mccormick w40

McCormick-Deering W-40 Built in July 1939

Mid 1990's Canadian Import, Excellent running older restoration, with high speed top gear
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

set to 150px
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 alsoEdit


  1. Wendel, C. H. 1981. 150 Years of International Harvester, Crestline Publishing Co., Sarasota, Florida. (serial numbers p.412)
  2. Klancher, Lee 1996. International Harvester Photographic History, Motorbooks International, Osceola, Wisconsin, p.68
  3. Leffingwell, Randy 1999. International Harvester Tractors, MBI Publishing Co., Osceola, Wisconsin. pp.100,190

External linksEdit

Community content is available under CC-BY-SA unless otherwise noted.