Tractor · 1935Unverified
McCormick-Deering W-40
McCormick-Deering W-40 — Standard-tread tractor · 28 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
28 hp
Max power
23.7 kW
Weight
2766 kg
Hover a source tag to verify
Overview
ManufacturerMcCormick-Deering (a part of International Harvester)Reference
Standard-tread tractorReference
Built in Milwaukee, Wisconsin, USAReference
The W-40 paint color changed from grey to red on November 1, 1936.Reference
Two-wheel driveReference
Final drivesbull gearReference
Manual steeringReference
Open operator station.Reference
Variants
WA-40279ci gasolineReference
W-40298ci gasolineReference
WK-40298ci keroseneReference
WD-40dieselReference
Engine
International Harvester 4.9L 6-cyl gasolineReference
International Harvester 4.9L 6-cyl keroseneReference
International Harvester 4.0L 6-cyl gasolineReference
Fuel tank117.3 LReference
Aux. fuel4.7 LReference
Drawbar (claimed)20.9 kWReference
Belt (claimed)33.6 kWReference
Drawbar (tested)26.3 kWReference
Belt (tested)37.1 kWReference
International Harvester FBBReference
gasolineReference
6-cylinderReference
liquid-cooled vertical I-headReference
Displacement4.9 LReference
Bore/Stroke95 x 114 mmReference
Rated RPM1750Reference
Oil capacity8.5 LReference
Coolant capacity45.4 LReference
International HarvesterReference
keroseneReference
liquid-cooledReference
Air cleaneroil bathReference
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.Reference
Displacement4.0 LReference
Bore/Stroke86 x 114 mmReference
Belt power (max)34.1 kWReference
Max power23.7 kWReference
Belt power (max)37.1 kWReference
Max power26.3 kWReference
Transmission
3-speed unsynchronized gearReference
4-speed unsynchronized gearReference
Typeunsynchronized gearReference
Gears3 forward and 1 reverseReference
Clutchdry discReference
Gears4 forward and 1 reverseReference
High-speed fourth gear was only for tractors with rubber tires.Reference
PTO & Hydraulics
Rear PTO Type553Reference
Dimensions
Wheelbase215 cmReference
Weight2766 kgReference
Front tire34x6Reference
Rear tire50x12Reference
Ag front34x6 (steel)Reference
Ag rear50x12 (steel)Reference
Length359 cmReference
Width167 cmReference
Height (exhaust)185 cmReference
Front tread132 cmReference
Rear tread134 cmReference
W-40 Serial Numbers
1935501Reference
19361441Reference
19375120Reference
19387665Reference
19399756Reference
194010323Reference
FAQ: How to read a serial number table.Reference
Capacities
Diameter39 cmReference
Width22 cmReference
RPM645Reference
Speed806.81 meters/minReference
Test results
NTTL 268: distillate 1600rpm 3-speed 2WDReference
NTTL 269: distillate 1750rpm 3-speed 2WDReference
Distillate 1600rpm 3-speed 2WDAugust 25 - September 3, 1936Link: Nebraska Tractor Test 268 fileReference
Belt fuel use (max)20.4 l/hourReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull1995 kgReference
Gear 1 used for pull test.Reference
Distillate 1750rpm 3-speed 2WDSeptember 3 - 15, 1936Link: Nebraska Tractor Test 269 fileReference
Belt fuel use (max)21.2 l/hourReference
Max pull2259 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.