Tractor · 1944Unverified
McCormick-Deering OS-4
McCormick-Deering OS-4 · 25 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
25 hp
Weight
1868 kg
Hover a source tag to verify
Overview
ManufacturerMcCormick-DeeringReference
Built in Rock Island, Illinois, USAReference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Variants
W-4standardReference
O-4orchardReference
OS-4orchard, without full sheet metalReference
Engine
International Harvester 2.5L 4-cyl gasolineReference
Fuel tank66.2 LReference
Aux. fuel2.8 LReference
Drawbar (claimed)18.6 kWReference
Belt (claimed)20.5 kWReference
International HarvesterReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement2.5 LReference
Bore/Stroke86 x 113 mmReference
Air cleaneroil bathReference
Compression5.9:1 (high-compression gasoline)Reference
Compression4.75:1 (gasoline-distillate)Reference
Compression4.5:1 (kerosene)Reference
Rated RPM1650Reference
Firing order1-3-4-2Reference
Oil capacity5.7 LReference
Coolant capacity16.1 LReference
Transmission
5-speed gearReference
TypegearReference
Gears5 forward and 1 reverseReference
Oil capacity22.7 LReference
PTO & Hydraulics
Rear PTO Type540Reference
Dimensions
Wheelbase169 cmReference
Weight1868 kgReference
Front tire5.50-16Reference
Rear tire12-26Reference
Ag front5.50-16Reference
Ag rear12-26Reference
Length307 cmReference
Width140 cmReference
Height145 cmReference
Shipping weight1868 kgReference
Clearance (front axle)38 cmReference
Front tread116 cmReference
Rear tread106 cmReference
Capacities
Diameter24 cmReference
Width19 cmReference
RPM1019Reference
Speed792.78 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.