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Tractor · 1940Unverified

McCormick-Deering WD-9

Name: McCormick-Deering WD-9
Brand: McCormick-Deering

McCormick-Deering WD-9 — Standard-tread tractor · 33 hp. Reference specifications; pending source verification.

The McCormick-Deering WD-9 is a tractor with a rated power output of 33 hp, categorising it at the lighter end of its class. Built between 1940 and 1954, this model utilises a 4-cylinder diesel liquid-cooled engine, which is paired with two-wheel drive and a 5-speed gearbox. Its listed operating weight is 3016 kg, and it is suitable for operations spanning up to 200 acres.

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

Catalogue coverage

Variants represented

Richest spec table

72 rows

Recorded power

33 hp

Recorded weight

3016 kg

Transmissions

5-speed gear

Production years

1940-1954

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

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.

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