McCormick-Deering W-9

Last Updated: July 2024

Overview

The McCormick-Deering W-9 is a standard-tread utility tractor with a strong foundation for heavy-duty farming tasks. It features a 5-speed manual transmission, manual steering, and a rugged 4-cylinder gasoline/distillate engine designed by International Harvester. The engine produces a maximum belt horsepower of 49.40 at 1500 RPM and a calculated 52.36 HP at sea level. It operates comfortably at a rated RPM of 1500, indicating its capability for steady power delivery. The tractor's weight ranges from 5950 to 6350 pounds, ensuring stability and traction. Its broad steel wheels with diameters of 30 inches in the front and 48 inches in the rear support this powerful frame. Notable features include a liquid cooling system with a 40-quart coolant capacity, and compatibility with gasoline and distillate fuels. The independent test results provide additional performance metrics, including fuel consumption rates, drawbar data, and detailed testing scenarios.
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Key Specifications

Category: Utility, Standard Tread

Transmission: Manual

Drive Type: 2WD

Operating Weight: 6350

Fuel Type: Gasoline/Distillate

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McCormick-Deering W-9 Tractor McCormick-Deering W-9 Tractor McCormick-Deering W-9 Tractor McCormick-Deering W-9 Tractor

McCormick-Deering W-9 vs. Similar Tractors

Operating Weight
Average
Greater than 49% of similar tractors.

Technical Specifications

Engine

Manufacturer
International Harvester
Model
5.5L 4-cyl
Cooling Type
Liquid
Cylinder Orientation
-
Valve Configuration
-
Fuel Type
Gasoline/Distillate
Induction Type
Naturally aspirated
Cylinders
4
Displacement (ci)
334.5
Bore (in)
4.4
Stroke (in)
5.5
Rated RPM
1500
Power Output (hp)
-

Transmission

Type
Manual
Forward Gears
5
Reverse Gears
1
Total Gears
-

Dimensions

Length (in)
134.25
Width (in)
68.5
Height (in)
66
Operating Weight (lb)
6350

Power Take-Off (PTO)

PTO Type
-
PTO Speed 1 (rpm)
-
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2 2WD
Drive Type
2WD
Steering Type
Manual
Coolant Capacity (qts)
40
Front Tire Diameter (in)
30
Front Tire Width (in)
6
Rear Tire Diameter (in)
48
Rear Tire Width (in)
12
Front/Rear Rim Diameter (in)
-
Tire Type
Steel
Manufacture - End Year
-
Hitch Type
-
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
-
Starter Type
-
Brake Type
-
Hydraulic System Type
-

Test Results

Nebraska Tractor Test Laboratory - Test Date: January 1941

Maximum Power and Fuel Consumption

  • Maximum Power: 49.40 HP at 1500 rpm
  • Fuel Consumption at Maximum Power: 4.217 Gal/hr with a fuel efficiency of 0.621 lb/hp.hr
  • Water Used: 10.000 Gal/hr

Drawbar Performance

  • Maximum Drawbar Power: Not Recorded
  • Drawbar Power at Rated Engine Speed: 41.50 HP at 1500 rpm
  • Fuel Consumption at Rated Speed: 0.622 lb/hp.hr

Torque and Engine Performance

  • Maximum Torque: Not provided in the test results
  • Torque Rise: Not provided in the test results

Hydraulic Performance

  • Maximum Force Exerted: Not applicable for this model

Overall Efficiency

  • Fuel Efficiency: 11.71 drawbar HP.hr/gal
  • Observation Hours: Total time the tractor was operated: 285 hours

    Nebraska Tractor Test Lab.(1941).Test 369: McCormick-Deering Model W-9 (Gasoline). Lincoln, NE:University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/956

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