McCormick-Deering WD-9

Last Updated: July 2024

Overview

The McCormick-Deering WD-9 is a standard-tread utility tractor with a 4x2 2WD chassis and manual steering. It features a 5-speed gear transmission (5 forward, 1 reverse) and is powered by an International Harvester 4-cylinder diesel engine. The engine has a displacement of 334.5 ci, with a 4.40x5.50 inch bore and stroke, rated at 1500 RPM. The tractor weighs 6,650 lbs and measures 134 inches in length and 68 inches in width. According to Nebraska Tractor Test results from January 1950, it produces a maximum belt power of 48.69 HP at 1000 rpm belt pulley speed, with a fuel consumption of 4.85 Gal/hr at rated load. The maximum drawbar power is 39.04 HP, achieved with a drawbar pull of 6621 lbs at 2.91 mph.
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Key Specifications

Category: Utility, Standard Tread

Transmission: Gear

Drive Type: 2WD

Operating Weight: 6,650

Fuel Type: Diesel

McCormick-Deering WD-9 vs. Similar Tractors

Operating Weight
Poor
Greater than 3% of similar tractors.

Technical Specifications

Engine

Manufacturer
International Harvester
Model
-
Cooling Type
Liquid-cooled
Cylinder Orientation
Vertical
Valve Configuration
I-head
Fuel Type
Diesel
Induction Type
Natural aspiration
Cylinders
4
Displacement (ci)
334.5
Bore (in)
4.4
Stroke (in)
5.5
Rated RPM
1500
Power Output (hp)
-

Transmission

Type
Gear
Forward Gears
5
Reverse Gears
1
Total Gears
-

Dimensions

Length (in)
134
Width (in)
68
Height (in)
-
Operating Weight (lb)
6,650

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)
44
Front Tire Diameter (in)
Unknown
Front Tire Width (in)
Unknown
Rear Tire Diameter (in)
Unknown
Rear Tire Width (in)
Unknown
Front/Rear Rim Diameter (in)
Unknown
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 1950

Maximum Power and Fuel Consumption

  • Maximum Belt Power: 48.69 HP at 1000 rpm belt pulley speed
  • Fuel Consumption at Rated Load: 4.85 Gal/hr with a fuel efficiency of 0.588 lb/HP.hr

Drawbar Performance

  • Maximum Drawbar Power: 39.04 HP with a drawbar pull of 6621 lbs and a speed of 2.91 mph
  • Fuel Consumption in Drawbar Test: 0.677 lb/HP.hr with a fuel efficiency of 9.13 Hp.hr/gal

Engine and Torque Performance

  • Maximum Torque: Information not provided in the available text
  • Torque Rise: Information not provided in the available text

Additional Performance Metrics

  • Maximum Sound Level: Information not provided in the available text
  • Hydraulic Performance: Information not provided in the available text



NTTL.(1950). Nebraska Tractor Test 441 for McCormick-Deering WD-9 Diesel. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/120

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