McCormick-Deering W-40

The McCormick-Deering W-40 is a tractor produced by Mccormick Deering. It is equipped with a 242 ci 4.0 L engine. The rated power output is 49.76 hp 37.1 kW. Transmission: 4 forward and 1 reverse. Operating weight: 6100 lbs 2766 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
The W-40 paint color changed from grey to red on November 1, 1936.

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

McCormick-Deering W-40 Power
Drawbar (claimed)	28 hp 20.9 kW
Belt (claimed)	45 hp 33.6 kW
Drawbar (tested)	35.22 hp 26.3 kW
Belt (tested)	49.76 hp 37.1 kW
Performance test details ...

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

Power Take-off (PTO)
Rear PTO Type	553

Dimensions & Tires
Wheelbase	85 inches 215 cm
Weight	6100 lbs 2766 kg
Front tire	34x6
Rear tire	50x12
Full dimensions and tires ...

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

References
Instruction Book Model W-40 (5097) published in 1937

Engine

Engine options
International Harvester 4.9L 6-cyl gasoline
International Harvester 4.9L 6-cyl kerosene
International Harvester 4.0L 6-cyl gasoline

Engine Detail — 298.2 ci / 4.9 L Gasoline

Manufacturer	International Harvester FBB
Fuel Type	Gasoline
Configuration	6-cylinder, liquid-cooled vertical I-head
Displacement	298.2 ci 4.9 L
Bore/Stroke	3.75x4.50 inches 95 x 114 mm
Rated RPM	1750
Oil capacity	9 qts 8.5 L
Coolant capacity	48 qts 45.4 L

Engine Detail — 298.2 ci / 4.9 L Kerosene

Manufacturer	International Harvester
Fuel Type	Kerosene
Configuration	6-cylinder, liquid-cooled
Displacement	298.2 ci 4.9 L
Bore/Stroke	3.75x4.50 inches 95 x 114 mm
Air cleaner	oil bath
Rated RPM	1750

Engine Detail — 242 ci / 4.0 L Gasoline

Manufacturer	International Harvester
Fuel Type	Gasoline
Configuration	6-cylinder, liquid-cooled
The 242ci engine was used on the early production models of the WA-40 with gasoline engine. This was later replaced with the 298ci engine.
Displacement	242 ci 4.0 L
Bore/Stroke	3.375x4.50 inches 86 x 114 mm
Air cleaner	oil bath
Rated RPM	1750

Transmission

Transmission options
3-speed unsynchronized gear
4-speed unsynchronized gear

Transmission — 3 forward and 1 reverse unsynchronized gear

Type	unsynchronized gear
Gears	3 forward and 1 reverse
Clutch	dry disc

Transmission — 4 forward and 1 reverse unsynchronized gear

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

Dimensions

McCormick-Deering W-40 Tires
Ag front	34x6 (steel)
Ag rear	50x12 (steel)

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

Tests

Tractor Tests
NTTL 268: distillate 1600rpm 3-speed 2WD
NTTL 269: distillate 1750rpm 3-speed 2WD

Nebraska Tractor Test 268
Distillate 1600rpm 3-speed 2WD August 25 - September 3, 1936 Link: Nebraska Tractor Test 268 file
Belt power (max)	45.69 hp 34.1 kW
Belt fuel use (max)	5.4 gal/hour 20.4 l/hour
Drawbar performance
Max power	31.79 hp 23.7 kW
Gear 2 used for power test.
Max pull	4,399 lbs 1995 kg
Gear 1 used for pull test.

Nebraska Tractor Test 269
Distillate 1750rpm 3-speed 2WD September 3 - 15, 1936 Link: Nebraska Tractor Test 269 file
Belt power (max)	49.76 hp 37.1 kW
Belt fuel use (max)	5.6 gal/hour 21.2 l/hour
Drawbar performance
Max power	35.22 hp 26.3 kW
Gear 2 used for power test.
Max pull	4,982 lbs 2259 kg
Gear 1 used for pull test.

Photos

McCormick-Deering WK-40 in grey paint

McCormick-Deering WK-40 in grey paint

McCormick-Deering WK-40 in red paint.