McCormick-Deering
McCormick-Deering O-4
The McCormick-Deering O-4 is an orchard/vineyard tractor produced from 1940 to 1953 by McCormick-Deering in Rock Island, Illinois, USA. A total of 2,721 units were built. It features a 2.5L 4-cylinder gasoline engine by International Harvester, with a 5-speed gear transmission and two-wheel drive. The tractor has an open operator station and manual steering. It is equipped with a rear PTO type 540 and belt pulley with a diameter of 9.75 inches. The O-4 variant is designed specifically for orchard use, with related variants including the W-4 standard and OS-4 orchard without full sheet metal. Dimensions include a wheelbase of 66.75 inches, length of 120.9 inches, width and height of 60.25 inches, and a shipping weight of 4320 lbs. Tires are sized 5.50-16 front and 12-26 rear. The tractor is known for its reliability and suitability for orchard and vineyard farming.
Power30 hp[B]
Founded1940 - 1953
ModelO-4
Technical Specifications
Detailed specifications and technical data for McCormick-Deering O-4
Power
| Gasoline | 27.5 hp (20.5 kW) |
|---|---|
| Belt (claimed) | 24 hp (kerosene) (17.9 kW) |
Tires
| Rear tire | 12-26 |
|---|---|
| Front tire | 5.50-16 |
Engine
| Type | International Harvester 2.5L 4-cyl gasoline |
|---|---|
| Aux. fuel | 0.75 gal (2.8 L) |
| Fuel tank | 17.5 gal (66.2 L) |
| Rated RPM | 1650 |
| Bore/Stroke | 3.375x4.45 inches (86 x 113 mm) |
| Compression | 5.9:1 (high-compression gasoline), 4.75:1 (gasoline-distillate), 4.5:1 (kerosene) |
| Displacement | 152.1 ci (2.5 L) |
| Firing order | 1-3-4-2 |
| Oil capacity | 6 qts (5.7 L) |
Variants
| O-4 | orchard |
|---|---|
| W-4 | standard |
| OS-4 | orchard, without full sheet metal |
Dimensions
| Width | 60.25 inches (153 cm) |
|---|---|
| Height | 60.25 inches (153 cm) |
| Length | 120.9 inches (307 cm) |
| Wheelbase | 66.75 inches (169 cm) |
| Shipping weight | 4320 lbs (1959 kg) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | Manual steering |
| Operator station | Open operator station |
Production
| Type | Orchard/Vineyard tractor |
|---|---|
| Built in | Rock Island, Illinois, USA |
| Total built | 2,721 |
| Years produced | 1940 - 1953 |
References
| General Line Catalog | published in 1949, by International Harvester |
|---|
Belt Pulley
| RPM | 1019 |
|---|---|
| Speed | 2601 ft/min (792.78 meters/min) |
| Width | 7.5 inches (19 cm) |
| Diameter | 9.75 inches (24 cm) |
Transmission
| Type | gear |
|---|---|
| Gears | 5 forward and 1 reverse |
Serial Numbers
| 1940 | OBH501 |
|---|---|
| 1941 | OBH943 |
| 1942 | OBH4056 |
| 1943 | OBH5693 |
| 1944 | OBH7593 |
| 1945 | OBH11171 |
| 1946 | OBH13934 |
| 1947 | OBH16022 |
| 1948 | OBH18880 |
| 1949 | OBH21912 |
| 1950 | OBH24470 |
| 1951 | OBH28167 |
| 1952 | OBH31214 |
| 1953 | OBH33067 |
| Location | Left side of tractor, on clutch housing |
Power Take-off (PTO)
| Rear PTO Type | 540 |
|---|
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