Tractor · 1940Unverified
McCormick-Deering WD-9
McCormick-Deering WD-9 — Standard-tread tractor · 33 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
33 hp
Max power
31.7 kW
Weight
3016 kg
Hover a source tag to verify
Overview
ManufacturerMcCormick-Deering (a part of International Harvester)Reference
Standard-tread tractorReference
FactoriesMilwaukee, Wisconsin, USAReference
FactoriesMelrose Park, Illinois, USAReference
Two-wheel driveReference
Manual steeringReference
Differential mechanical contracting band brakesReference
Open operator station.Reference
Variants
W-9gasolineReference
WD-9dieselReference
I-9industrialReference
Engine
International Harvester 5.5L 4-cyl dieselReference
Fuel tank136.3 LReference
Aux. fuel3.3 LReference
Drawbar (claimed)24.6 kWReference
Belt (claimed)31.3 kWReference
Drawbar (tested)31.7 kWReference
Belt (tested)34.6 kWReference
International HarvesterReference
dieselReference
4-cylinderReference
liquid-cooled vertical I-headReference
Displacement5.5 LReference
Bore/Stroke112 x 140 mmReference
Air cleaneroil bathReference
Compression15.7:1Reference
Rated RPM1500Reference
Starter typegasoline ignitionReference
Coolant capacity41.6 LReference
Belt power (max)34.6 kWReference
Max power31.7 kWReference
Transmission
5-speed gearReference
TypegearReference
Gears5 forward and 1 reverseReference
Clutchmechanical dry discReference
Dimensions
Weight3016 kgReference
Front tire30-6Reference
Rear tire48-12Reference
Ag front30-6 steelReference
Ag rear48-12 steelReference
Ag front7.50x18Reference
Ag rear14.00x21Reference
Length340 cmReference
Width172 cmReference
Operating weight3016 kgReference
Ballasted weight4653 kgReference
WD-9 Serial Numbers
Location:Serial number plate near the fuel tank.Reference
1940WDCB 501Reference
1941WDCB 578Reference
1942WDCB 2993Reference
1943WDCB 3651Reference
1944WDCB 5394Reference
1945WDCB 11459Reference
1946WDCB 17289Reference
1947WDCB 22714Reference
1948WDCB 29207Reference
1949WDCB 36159Reference
1950WDCB 45551Reference
1951WDCB 51739Reference
1952WDCB 59407Reference
1953WDCB 64014Reference
FAQ: How to read a serial number table.Reference
Capacities
Diameter35 cmReference
Width21 cmReference
RPM707Reference
Speed790.35 meters/minReference
Test results
Diesel 5-speed 2WDMay 21 - June 18, 1941Link: Nebraska Tractor Test 370 fileReference
Belt fuel use (max)12.1 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull2888 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.