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Tractor · 1940Unverified

McCormick-Deering WD-6

Name: McCormick-Deering WD-6
Brand: McCormick-Deering

McCormick-Deering WD-6 — Standard-tread tractor · 31 hp. Reference specifications; pending source verification.

The McCormick-Deering WD-6 is a tractor with a rated power of 31 hp, positioning it towards the lower end of its class in terms of power output. The WD-6 was manufactured from 1940 to 1952. It features a 4-cylinder diesel liquid-cooled engine combined with two-wheel drive and a 5-speed gearbox. The tractor's listed operating weight is 1973 kg, and it is suitable for use on areas of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

31 hp

Max power

23.1 kW

Weight

1973 kg

Catalogue coverage

Variants represented

Richest spec table

74 rows

Recorded power

31 hp

Recorded weight

1973 kg

Transmissions

5-speed gear

Production years

1940-1952

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

Built in Rock Island, Illinois, USAReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Variants

ID-6industrialReference

MDrow-cropReference

W-6gasoline engineReference

Engine

International Harvester 4.1L 4-cyl dieselReference

Fuel tank79.5 LReference

Aux. fuel3.3 LReference

Drawbar (claimed)23.4 kWReference

Belt (claimed)27.1 kWReference

Drawbar (tested)23.1 kWReference

Belt (tested)25.9 kWReference

International HarvesterReference

dieselReference

4-cylinderReference

liquid-cooled vertical I-headReference

Displacement4.1 LReference

Bore/Stroke98 x 133 mmReference

Compression14.2:1Reference

Rated RPM1450Reference

Firing order1-3-4-2Reference

Coolant capacity25.6 LReference

Belt power (max)25.9 kWReference

Max power23.1 kWReference

Transmission

5-speed gearReference

TypegearReference

Gears5 forward and 1 reverseReference

Clutch279.4mm mechanical dry discReference

PTO & Hydraulics

Rear PTOtransmissionReference

Rear PTO Type540Reference

Dimensions

Wheelbase193 cmReference

Weight1973 kgReference

Front tire22.50-4Reference

Rear tire42-10Reference

Ag front22.50-4 (steel)Reference

Ag rear42-10 (steel)Reference

Ag front6.50x16Reference

Ag rear13.5x24Reference

Length315 cmReference

Width160 cmReference

Height228 cmReference

Height (hood)149 cmReference

Shipping weight1973 kgReference

Front tread118 cmReference

Rear tread134 cmReference

WD-6 Serial Numbers

Location:Serial number plate located on the clutch housing.Reference

1940WDBK 516Reference

1941WDBK 1225Reference

1942WDBK 3718Reference

1943----Reference

1944WDBK 6371Reference

1945WDBK 9509Reference

1946WDBK 14019Reference

1947WDBK 16811Reference

1948WDBK 24020Reference

1949WDBK 28906Reference

1950WDBK 35566Reference

1951WDBK 39443Reference

1952WDBK 45175Reference

FAQ: How to read a serial number table.Reference

Capacities

Diameter27 cmReference

Width19 cmReference

RPM899Reference

Speed788.82 meters/minReference

Test results

Diesel 5-speed 2WDSeptember 20 - 27, 1940Link: Nebraska Tractor Test 356 fileReference

Belt fuel use (max)8.7 l/hourReference

Drawbar performanceReference

Gear 3 used for power test.Reference

Max pull2180 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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