McCormick-Deering WD-40

The McCormick-Deering WD-40 is a tractor produced by Mccormick Deering. It is equipped with a 460.7 ci 7.6 L engine. The rated power output is 48.79 hp 36.4 kW. Transmission: 3 forward and 1 reverse. Operating weight: 7,550 lbs 3424 kg.

Overview

	1935 - 1940 Standard-tread tractor
1935 - 1940
Standard-tread tractor

Production
Manufacturer	McCormick-Deering (a part of International Harvester)
Standard-tread tractor
Built in Milwaukee, Wisconsin, USA

Variants
WA-40	gasoline
WK-40	kerosene
WD-40	diesel

McCormick-Deering WD-40 Engine
International Harvester 7.6L 4-cyl diesel
Fuel tank	31 gal 117.3 L
Aux. fuel	1.25 gal 4.7 L
Engine details ...

McCormick-Deering WD-40 Transmission
3-speed gear
Transmission details ...

McCormick-Deering WD-40 Power
Drawbar (claimed)	28 hp 20.9 kW
Belt (claimed)	44 hp 32.8 kW
Plows	4 (14-inch)
Drawbar (tested)	37.21 hp 27.7 kW
Belt (tested)	48.79 hp 36.4 kW
Performance test details ...

Mechanical
Two-wheel drive
Final drives	spur gear
Manual steering
Open operator station

Dimensions & Tires
Weight	7,550 lbs 3424 kg
Front tire	34x6
Rear tire	50x12
Full dimensions and tires ...

Belt Pulley
Diameter	16.75 inches 42 cm
Width	9 inches 22 cm
RPM	588
Speed	2580 ft/min 786.38 meters/min

References
International Tractors - The Line That Offers You A Choice published in 1933, by International Harvester

Engine

Engine Detail — 460.7 ci / 7.6 L Diesel

Manufacturer	International Harvester
Fuel Type	Diesel
Configuration	4-cylinder 8 ((The WD-40 engine has twelve total valves. The four intake valves on the gasoline start manifold are blocked off during diesel operation.))-valve, liquid-cooled vertical I-head
Displacement	460.7 ci 7.6 L
Bore/Stroke	4.75x6.50 inches 121 x 165 mm
Air cleaner	oil bath
Compression	17:1
Rated RPM	1100
Starter type	hand-cranked gasoline-ignition
Coolant capacity	56 qts 53.0 L

Transmission

Transmission — 3 forward and 1 reverse gear

Type	gear
Gears	3 forward and 1 reverse
Clutch	dry disc

Dimensions

McCormick-Deering WD-40 Tires
Ag front	34x6 steel
Ag rear	50x12 steel

Dimensions
Length	141.5 inches 359 cm
Width	65.5 inches 166 cm
Height	67 inches 170 cm
Weight	7,550 lbs 3424 kg

Tests

Nebraska Tractor Test 246
Diesel 3-speed 2WD September 23 - 27, 1935 Link: Nebraska Tractor Test 246 file
Belt power (max)	48.79 hp 36.4 kW
Belt fuel use (max)	3.4 gal/hour 12.9 l/hour
Drawbar performance
Max power	37.21 hp 27.7 kW
Gear 1 used for power test.
Max pull	4,774 lbs 2165 kg
Gear 1 used for pull test.

Photos

Red McCormick-Deering WD-40, right side.

Detail of WD-40 diesel engine, left side.

Grey McCormick-Deering WD-40, left side.