McCormick-Deering TD-40

Last Updated: July 2024

Overview

The McCormick-Deering TD-40 is an early model tracked agricultural tractor with a unique engine start-up system that begins operation with gasoline and then transitions to diesel fuel. The tractor's 4-cylinder, liquid-cooled vertical I-head diesel engine has a displacement of 460.7 cubic inches and is rated at 1200 RPM. It has a 5 forward and 1 reverse transmission system with advertised speeds ranging from 0.75 to 4 mph forward and 2.25 mph reverse. The operating weight is 12080 pounds, and it features a 14.5-inch diameter, 8-inch face belt pulley running at 645 RPM. The TD-40 uses an Own Make single plate clutch and an Own Model fuel system, with lubrication specified as S.A.E. No.30.

Key Specifications

Operating Weight: 12080

Fuel Type: Diesel, starts with gasoline

Image Gallery

McCormick-Deering TD-40 Tractor

Technical Specifications

Engine

Manufacturer: International Harvester
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Vertical
Valve Configuration: I-head
Fuel Type: Diesel, starts with gasoline
Induction Type: -
Cylinders: 4
Displacement (ci): 460.7
Bore (in): 4.75
Stroke (in): 6.5
Rated RPM: 1200
Power Output (hp): -

Transmission

Type: -
Forward Gears: 5
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 140
Width (in): 63.75
Height (in): 82.5
Operating Weight (lb): 12080

Power Take-Off (PTO)

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

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): 60
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
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: April 20 to 30, 1938

Maximum Power and Fuel Consumption

Maximum Power at Belt: 53.46 HP
Maximum Power at Drawbar: 48.53 HP
Fuel Consumption at Maximum Power: 2.74 Gal/hr with a fuel efficiency of 0.490 lb/HP.hr

Drawbar Performance

Maximum Drawbar Pull: 6562 lbs at 2.76 mph with a slippage of 8.9%
Fuel Consumption at Drawbar Pull: 1.48 Gal/hr with a fuel efficiency of 4.52 HP.hr/gal

Belt Performance

Belt Pulley Speed: 645 RPM
Belt Pulley Power: 53.46 HP

Operating Temperatures

Water Temperature at Maximum Load: 174°F
Cooling Air Temperature: 85°F

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1200 RPM): 14.32 HP.hr/gal
Fuel Consumption: 13.734 Gal/hr at 1200 RPM

Nebraska Tractor Test Lab.(1938).Test 298: McCormick-Deering Tractor Model TD-40. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/897