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TractorSpex

Tractor data for over 20,000 different models.

Home > McCormick-Deering > W-9

McCormick-Deering W-9

Engine:

McCormick-Deering Standard

Power:

50 HP (Engine) / HP (PTO)

Fuel Type:

Diesel

Production:

1940 - 1953

Detailed Specifications

Overview


Overview
Summary	x1940 - 1953 Standard-tread tractor


Production
Manufacturer	McCormick-Deering (a part of International Harvester)
Summary	Standard-tread tractor
Factories	Milwaukee, Wisconsin, USA
	Melrose Park, Illinois, USA
Total built	67,418
Original price	$3,300
Summary	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.


Variants
W-9	gasoline
WD-9	diesel
I-9	industrial


Mechanical
Summary	Two-wheel drive
Steering	manual worm-type gear
Summary	Differential external contracting band brakes / Open operator station.


Electrical
Ground	positive


References
Summary	/ Farmall Letter Series Tractors by Lee Klancher / McCormick-Deering Standard Tractors published in 1946, by International Harvester / McCormick Standard Tractors published by International Harvester / General Line Catalog published in 1949, by International Harvester

Engine Specifications


Engine options
Summary	International Harvester 5.5L 4-cyl gasoline / International Harvester 5.5L 4-cyl distillate


Engine Detail
Summary	International Harvester / gasoline / 4-cylinder / liquid-cooled vertical I-head / The gasoline engine was standard on the I-9, and an option on the W-9 until 1947, when it became the standard engine.
Displacement	334.5 ci 5.5 L
Bore/Stroke	4.40x5.50 inches 112 x 140 mm
Compression	5.4:1
Rated RPM	1500
Coolant capacity	44 qts 41.6 L


Engine Detail
Summary	International Harvester / distillate / 4-cylinder / liquid-cooled / 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.
Displacement	334.5 ci 5.5 L
Bore/Stroke	4.40x5.50 inches 112 x 140 mm
Rated RPM	1500
Coolant capacity	40 qts 37.9 L

Transmission & PTO


Transmission
Type	sliding gear
Gears	5 forward and 1 reverse
Summary	Fifth gear was locked out on tractors equipped with steel wheels.

Dimensions & Weight


McCormick-Deering W-9 Tires
Ag front	30x6 (steel)
	7.50-18
Ag rear	48x12 (steel)
	14-34
	15-34
Ag rear	14-32


Dimensions
Length	134.25 inches 340 cm
Width	68.5 inches 173 cm
Height	66 inches 167 cm


McCormick-Deering W-9 Weight
Shipping	5,950 lbs 2698 kg
Operating	6,350 lbs 2880 kg
Ballasted	10,090 lbs 4576 kg

Performance Tests


Tractor Tests
Summary	NTTL 369: gasoline 5-speed 2WD / NTTL 371: distillate 5-speed 2WD


Nebraska Tractor Test 369
Summary	Gasoline 5-speed 2WD May 21 - June 17, 1941 Link: Nebraska Tractor Test 369 file
Belt power (max)	49.40 hp 36.8 kW
Belt fuel use (max)	4.2 gal/hour 15.9 l/hour
Summary	Drawbar performance
Max power	44.15 hp 32.9 kW
Summary	Gear 3 used for power test.
Max pull	6,414 lbs 2909 kg
Summary	Gear 1 used for pull test.


Nebraska Tractor Test 371
Summary	Distillate 5-speed 2WD June 4 - 17, 1941 Link: Nebraska Tractor Test 371 file
Belt power (max)	46.36 hp 34.6 kW
Belt fuel use (max)	4.3 gal/hour 16.3 l/hour
Summary	Drawbar performance
Max power	42.67 hp 31.8 kW
Summary	Gear 3 used for power test.
Max pull	6,577 lbs 2983 kg
Summary	Gear 1 used for pull test.

Last Database Update: 8/3/2025