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W-12 (Kerosene)

McCormick-Deering W-12 (Kerosene)

Last Updated: July 2024

Overview

The McCormick-Deering W-12 (Kerosene) is a standard-tread utility tractor powered by a 113.1 cubic inch, 4-cylinder International Harvester engine running on kerosene fuel. With a liquid cooling system, centrifugal governor, and oil-washed air cleaner, the engine has a rated speed of 1700 RPM and a bore and stroke of 3.00x4.00 inches. Its transmission is an unsynchronized gear type offering 3 forward gears and 1 reverse gear. The McCormick-Deering W-12 has manual steering, a single plate-dry disc clutch operated by foot pedal, and steel wheels with lugs (42 inches diameter, 8 inches face, 2 lugs per wheel). The length is 103 inches, width 50.5 inches, height to steering wheel 55 inches, with an operating weight of 3360 pounds including operator. It features upholstered seats and uses SAE Viscosity No. 30 oil.

Key Specifications

Category: Utility, Standard Tread

Transmission: Gear

Drive Type: 2WD

Operating Weight: 3360

Fuel Type: Kerosene

Technical Specifications

Engine

Manufacturer: International Harvester
Model: -
Cooling Type: Liquid
Cylinder Orientation: Vertical
Valve Configuration: I-head
Fuel Type: Kerosene
Induction Type: Naturally Aspirated
Cylinders: 4
Displacement (ci): 113.1
Bore (in): 3
Stroke (in): 4
Rated RPM: 1700
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 3
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 103
Width (in): 50.5
Height (in): 55 (to steering wheel)
Operating Weight (lb): 3360

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): 14
Front Tire Diameter (in): -
Front Tire Width (in): 3.5
Rear Tire Diameter (in): -
Rear Tire Width (in): 8
Front/Rear Rim Diameter (in): -
Tire Type: Steel with Lugs
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: October 23 to November 9, 1934

Maximum Power and Fuel Consumption

Maximum Power: 15.28 HP (11.40 kW) at 1702 rpm
Fuel Consumption at Maximum Power: 1.51 Gal/hr (5.71 l/h) with a fuel efficiency of 0.673 lb/hp.hr (0.409 kg/kW.h)

Rated Load Test (Drawbar Performance)

Power at Rated Engine Speed (Second Gear): 9.90 HP (7.38 kW) with a drawbar pull of 1,955 lbs (8.69 kN) and a speed of 2.19 mph (3.52 km/h)
Fuel Consumption at Rated Speed: 1.988 Gal/hr (7.53 l/h) with a fuel efficiency of 1.367 lb/hp.hr (0.831 kg/kW.h)

Varying Load Test (Average for Two Hours)

Average Power: 13.94 HP (10.40 kW) at 1695 rpm
Fuel Consumption: 1.441 Gal/hr (5.45 l/h) with a fuel efficiency of 0.704 lb/hp.hr (0.428 kg/kW.h)

Drawbar Performance (Maximum Load Test)

Maximum Drawbar Power: 12.56 HP (9.37 kW) at 1702 rpm with a drawbar pull of 5,460 lbs (24.29 kN)
Fuel Consumption: Not Recorded

Overall Efficiency

Fuel Efficiency at Standard PTO Speed: Not provided
Fuel Consumption: Not provided

NTTL.(1934). Nebraska Tractor Test 229 for McCormick-Deering W-12 (Kerosene). Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from http://digitalcommons.unl.edu/tractormuseumlit/836