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Tractor · 1934Unverified

McCormick-Deering O-12

Name: McCormick-Deering O-12
Brand: McCormick-Deering

McCormick-Deering O-12 — Orchard/Vineyard tractor · 19 hp. Reference specifications; pending source verification.

The McCormick-Deering O-12 is a tractor rated at approximately 19 horsepower, positioning it at the lower end of its class. It was manufactured between 1934 and 1938. The tractor features a 4-cylinder liquid-cooled engine and two-wheel drive with a 3-speed gearbox, with an operating weight of 1451 kilograms. Its listed operating capacity is up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

19 hp

Weight

1451 kg

Catalogue coverage

Variants represented

Richest spec table

51 rows

Recorded power

19 hp

Recorded weight

1451 kg

Transmissions

3-speed unsynchronized gear

Production years

1934-1938

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerMcCormick-Deering (a part of International Harvester)Reference

Orchard/Vineyard tractorReference

Built in Chicago, Illinois, USAReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Variants

F-12row-cropReference

W-12standardReference

O-12orchardReference

I-12industrialReference

Engine

International Harvester 1.9L 4-cyl distillateReference

Fuel tank41.6 LReference

Aux. fuel2.8 LReference

Belt (claimed)14.1 kWReference

International HarvesterReference

distillateReference

4-cylinderReference

liquid-cooled vertical I-headReference

Displacement1.9 LReference

Bore/Stroke76 x 102 mmReference

Air cleaneroil bathReference

Rated RPM1700Reference

Firing order1-3-4-2Reference

Coolant capacity13.2 LReference

Transmission

3-speed unsynchronized gearReference

Typeunsynchronized gearReference

Gears3 forward and 1 reverseReference

Clutchdry discReference

PTO & Hydraulics

Rear PTO Type540Reference

Dimensions

Weight1451 kgReference

Front tire6.00-9Reference

Rear tire9.00-24Reference

Ag front6.00-9Reference

Ag rear9.00-24Reference

Length261 cmReference

Width127 cmReference

Height (steering wheel)132 cmReference

Shipping weight1451 kgReference

Front tread100 cmReference

Rear tread102 cmReference

O-12 Serial Numbers

1933OS-501Reference

1934OS-512Reference

1935OS-1164Reference

1936OS-1771Reference

1937OS-2443Reference

1938OS-3261Reference

FAQ: How to read a serial number table.Reference

Capacities

Diameter33 cmReference

Width15 cmReference

RPM748Reference

Speed790.35 meters/minReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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