McCormick-Deering

McCormick-Deering W-40

The McCormick-Deering W-40 is a standard-tread farm tractor produced from 1935 to 1940 by McCormick-Deering, a part of International Harvester. Built in Milwaukee, Wisconsin, USA, the W-40 was available with gasoline, kerosene, and diesel engines. It featured a two-wheel drive with manual steering and an open operator station. The tractor had a 3-speed or 4-speed unsynchronized gear transmission with a dry disc clutch. The W-40's power ranged from 28 hp drawbar claimed to 35.22 hp drawbar tested, with belt power up to 49.76 hp tested. The tractor's dimensions include a wheelbase of 85 inches, length of 141.5 inches, and weight of 6100 lbs. The W-40 paint color changed from grey to red on November 1, 1936.

Power50 hp[B]

Founded1935 - 1940

ModelW-40

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Technical Specifications

Detailed specifications and technical data for McCormick-Deering W-40

Power

Belt (tested)	49.76 hp (37.1 kW)
Belt (claimed)	45 hp (33.6 kW)
Drawbar (tested)	35.22 hp (26.3 kW)
Drawbar (claimed)	28 hp (20.9 kW)

Tires

Ag rear	50x12 (steel)
Ag front	34x6 (steel)

Engine

Options	International Harvester 4.9L 6-cyl gasoline, International Harvester 4.9L 6-cyl kerosene, International Harvester 4.0L 6-cyl gasoline
Aux. fuel	1.25 gal (4.7 L)
Fuel tank	31 gal (117.3 L)
Rated RPM	1750
Bore/Stroke	3.75x4.50 inches (95 x 114 mm)
Displacement	298.2 ci (4.9 L)
Oil capacity	9 qts (8.5 L)
Coolant capacity	48 qts (45.4 L)
Rated RPM (early WA-40)	1750
Air cleaner (early WA-40)	oil bath
Bore/Stroke (early WA-40)	3.375x4.50 inches (86 x 114 mm)
Displacement (early WA-40)	242 ci (4.0 L)
Air cleaner (kerosene engine)	oil bath
International Harvester kerosene	6-cylinder, liquid-cooled
International Harvester FBB gasoline	6-cylinder, liquid-cooled vertical I-head
International Harvester gasoline (early WA-40)	6-cylinder, liquid-cooled

Variants

W-40	298ci gasoline
WA-40	279ci gasoline
WD-40	diesel
WK-40	298ci kerosene

Dimensions

Width	65.75 inches (167 cm)
Length	141.5 inches (359 cm)
Weight	6100 lbs (2766 kg)
Wheelbase	85 inches (215 cm)
Rear tread	53 inches (134 cm)
Front tread	52.25 inches (132 cm)
Height (exhaust)	73 inches (185 cm)

Mechanical

Drive	Two-wheel drive
Steering	Manual steering
Final drives	bull gear
Operator station	Open operator station

Production

Type	Standard-tread tractor
Built in	Milwaukee, Wisconsin, USA
Years produced	1935 - 1940
Paint color change	The W-40 paint color changed from grey to red on November 1, 1936.

Belt Pulley

RPM	645
Speed	2647 ft/min (806.81 meters/min)
Width	9 inches (22 cm)
Diameter	15.7 inches (39 cm)

Transmission

Note	High-speed fourth gear was only for tractors with rubber tires.
Options	3-speed unsynchronized gear, 4-speed unsynchronized gear
Type (3-speed)	unsynchronized gear
Type (4-speed)	unsynchronized gear
Gears (3-speed)	3 forward and 1 reverse
Gears (4-speed)	4 forward and 1 reverse
Clutch (3-speed)	dry disc
Clutch (4-speed)	dry disc