McCormick-Deering O-4 Specs ( 1940-1953 )
Overview
The McCormick-Deering O-4 is an orchard and vineyard farm tractor produced between 1940 and 1953 in Rock Island, Illinois. It features an International Harvester 2.5L four-cylinder gasoline engine paired with a five-speed gear transmission and an open operator station.
Ideal Applications
Engine and Fuel Configuration:
Equipped with a liquid-cooled 152.1 cubic inch engine featuring a 5.9:1 compression ratio and a 17.5-gallon primary fuel tank supplemented by a 0.75-gallon auxiliary tank.
Transmission and PTO Specifications:
The mechanical layout consists of a two-wheel drive system with manual steering, five forward gears, one reverse gear, and a 540 RPM rear power take-off.
Physical Dimensions and Weight:
This model has a shipping weight of 4,320 lbs, a 66.75-inch wheelbase, and is equipped with 5.50-16 front tires and 12-26 rear tires.
Production
| Description | Orchard/Vineyard tractor / Built in Rock Island, Illinois, USA |
|---|---|
| Manufacturer | McCormick-Deering |
| Total built | 2,721 |
Engine
| Aux. fuel | 0.75 gal (2.8 L) |
|---|---|
| Engine type | International Harvester 2.5L 4-cyl gasoline |
| Fuel tank | 17.5 gal (66.2 L) |
| Bore/Stroke | 3.375x4.45 inches (86 x 113 mm) |
| Compression | 5.9:1 (high-compression gasoline) |
| Description | International Harvester / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 152.1 ci (2.5 L) |
| Firing order | 1-3-4-2 |
| Oil capacity | 6 qts (5.7 L) |
| Rated RPM | 1650 |
| Belt (claimed) | 24 hp (kerosene) (17.9 kW) |
Transmission
| Gears | 5 forward and 1 reverse |
|---|---|
| Transmission type | 5-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station |
|---|---|
| Description | Manual steering |
| Drive type | Two-wheel drive |
PTO
| Rear PTO Type | 540 |
|---|
Dimensions & Tires
| Height | 60.25 inches (153 cm) |
|---|---|
| Length | 120.9 inches (307 cm) |
| Shipping weight | 4320 lbs (1959 kg) |
| Wheelbase | 66.75 inches (169 cm) |
| Width | 60.25 inches (153 cm) |
| Front tire | 5.50-16 |
| Rear tire | 12-26 |
| Weight | 4320 lbs (1959 kg) |
| Wheelbase | 66.75 inches (169 cm) |
| Ag front | 5.50-16 |
| Ag rear | 12-26 |
Belt Pulley
| Diameter | 9.75 inches (24 cm) |
|---|---|
| RPM | 1019 |
| Speed | 2601 ft/min (792.78 meters/min) |
| Width | 7.5 inches (19 cm) |
O-4 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 |
| Description | FAQ: How to read a serial number table. |
| Location: | Left side of tractor, on clutch housing. |
References
| Description | General Line Catalog published in 1949, by International Harvester |
|---|
Variants
| O-4 | orchard |
|---|---|
| OS-4 | orchard, without full sheet metal |
| W-4 | standard |