Tractor · 1940Unverified
McCormick-Deering W-9
McCormick-Deering W-9 — Standard-tread tractor · 35 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
35 hp
Max power
32.9 kW
Weight
5950 to 6350 pounds
Hover a source tag to verify
Overview
ManufacturerMcCormick-Deering (a part of International Harvester)Reference
Standard-tread tractorReference
FactoriesMilwaukee, Wisconsin, USAReference
FactoriesMelrose Park, Illinois, USAReference
Total built67,418Reference
Original price$3,300Reference
The 9-series tractors consisted of six models, the W-9, WD-9, WR-9, WDR-9, I-9, and ID-9. The D models are diesel. The R is a rice model, with larger fenders and a hand-clutch to allow driving while standing. The I models were industrial, with different gear ratios and foot-operated throttle.Reference
Two-wheel driveReference
Steeringmanual worm-type gearReference
Differential external contracting band brakesReference
Open operator station.Reference
Variants
W-9gasolineReference
WD-9dieselReference
I-9industrialReference
Engine
International Harvester 5.5L 4-cyl gasolineReference
International Harvester 5.5L 4-cyl distillateReference
Fuel tank136.3 LReference
Aux. fuel3.3 LReference
Drawbar (claimed)26.1 kWReference
Belt (claimed)33.6 kWReference
Plows4Reference
Drawbar (tested)32.9 kWReference
Belt (tested)36.8 kWReference
International HarvesterReference
gasolineReference
4-cylinderReference
liquid-cooled vertical I-headReference
The gasoline engine was standard on the I-9, and an option on the W-9 until 1947, when it became the standard engine.Reference
Displacement5.5 LReference
Bore/Stroke112 x 140 mmReference
Compression5.4:1Reference
Rated RPM1500Reference
Coolant capacity41.6 LReference
distillateReference
liquid-cooledReference
The all-fuel engine was designed for tractor fuel and gasoline lower than 70 octane. It was the standard W-9 and WR-9 engine until 1947, when the gasoline engine became standard and the all-fuel engine was an option. The all-fuel engine was an option for the I-9.Reference
Coolant capacity37.9 LReference
Belt power (max)36.8 kWReference
Max power32.9 kWReference
Belt power (max)34.6 kWReference
Max power31.8 kWReference
Transmission
5-speed sliding gearReference
Typesliding gearReference
Gears5 forward and 1 reverseReference
Fifth gear was locked out on tractors equipped with steel wheels.Reference
Dimensions
Weight5950 to 6350 poundsReference
Front tire30x6Reference
Rear tire48x12Reference
Ag front30x6 (steel)Reference
Ag front7.50-18Reference
Ag rear48x12 (steel)Reference
Ag rear14-34Reference
Ag rear15-34Reference
Ag rear14-32Reference
Length340 cmReference
Width173 cmReference
Height167 cmReference
Shipping2698 kgReference
Operating2880 kgReference
Ballasted4576 kgReference
W-9 Serial Number Location
Serial number plate on the right side of the McCormick-Deering W-9, ahead of the belt pulley.Reference
W-9 Serial Numbers
1940WCB501Reference
1941WCB578Reference
1942WCB3003Reference
1943WCB3651Reference
1944WCB5501Reference
1945WCB11459Reference
1946WCB17294Reference
1947WCB22715Reference
1948WCB29207Reference
1949WCB36159Reference
1950WCB45551Reference
1951WCB51739Reference
1952WCB59407Reference
1953WCB64014Reference
1954WCB67969Reference
FAQ: How to read a serial number table.Reference
Electrical
GroundpositiveReference
Test results
NTTL 369: gasoline 5-speed 2WDReference
NTTL 371: distillate 5-speed 2WDReference
Gasoline 5-speed 2WDMay 21 - June 17, 1941Link: Nebraska Tractor Test 369 fileReference
Belt fuel use (max)15.9 l/hourReference
Drawbar performanceReference
Gear 3 used for power test.Reference
Max pull2909 kgReference
Gear 1 used for pull test.Reference
Distillate 5-speed 2WDJune 4 - 17, 1941Link: Nebraska Tractor Test 371 fileReference
Belt fuel use (max)16.3 l/hourReference
Max pull2983 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.