CO-OP
CO-OP 3
The CO-OP 3 is a standard-tread tractor built by Duplex Machinery and distributed by CO-OP from 1936 to 1950. It features a Chrysler 4.0L 6-cylinder liquid-cooled gasoline engine with a Zenith carburetor, producing a claimed 28 hp at the drawbar and 37 hp at the PTO. The tractor has a 5-speed gear transmission with dry disc clutch, two-wheel drive, and manual steering. It weighs 4450 lbs and rides on 7.50-16 front and 12.75-28 rear tires. The CO-OP 3 was manufactured in multiple US factories and is designed for general farm use with an open operator station.
Power41 hp[P]
Founded1936 - 1950
Model3
Technical Specifications
Detailed specifications and technical data for CO-OP 3
Power
| Plows | 3 *14-inch |
|---|---|
| Belt (tested) | 42.29 hp (31.5 kW) |
| PTO (claimed) | 37 hp (27.6 kW) |
| Drawbar (tested) | 37.50 hp (28.0 kW) |
| Drawbar (claimed) | 28 hp (20.9 kW) |
Tires
| Rear tire | 12.75-28 |
|---|---|
| Front tire | 7.50-16 |
Engine
| Make | Chrysler |
|---|---|
| Type | gasoline |
| Cooling | liquid-cooled |
| Cylinders | 6-cylinder |
| Fuel tank | 28 gal (106.0 L) |
| Rated RPM | 1600 |
| Bore/Stroke | 3.375x4.50 inches (86 x 114 mm) |
| Fuel system | Zenith carburetor |
| Displacement | 241.5 ci (4.0 L) |
| Coolant capacity | 20 qts (18.9 L) |
Dimensions
| Width | 75.6 inches (192 cm) |
|---|---|
| Height | 62 inches (157 cm) |
| Length | 132.25 inches (335 cm) |
| Shipping weight | 4450 lbs (2018 kg) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | manual |
| Operator station | Open operator station |
Production
| Type | Standard-tread tractor |
|---|---|
| Factories | Battle Creek, Michigan, USA; South Saint Paul, Minnesota, USA; Arthurdale, West Virginia, USA |
| Distributor | CO-OP |
| Manufacturer | Duplex Machinery |
| Years produced | 1936 - 1950 |
Transmission
| Type | gear |
|---|---|
| Gears | 5 forward and 1 reverse |
| Clutch | dry disc |