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| info | |
| 1936 - 1950, Standard-tread tractor |
| Production | |
| Distributor: | CO-OP |
| Manufacturer: | Duplex Machinery |
| Factory: | Battle Creek, Michigan, USA, South Saint Paul, Minnesota, USA, Arthurdale, West Virginia, USA |
| Capacity | |
| Fuel: | 28 gal [106.0 L] |
| Dimensions & Tires | |
| Weight: | 4450 lbs [2018 kg] |
| Front tire: | 7.50-16 |
| Rear tire: | 12.75-28 |
| 3 Serial Numbers | |
| Location: | Left side of dashboard |
| - Serial numbers unknown - | |
| CO-OP 3 Power | |
| Drawbar (claimed): | 28 hp [20.9 kW] |
| PTO (claimed): | 37 hp [27.6 kW] |
| Plows: | 3*14-inch |
| Drawbar (tested): | 37.50 hp [28.0 kW] |
| Belt (tested): | 42.29 hp [31.5 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Steering: | manual |
| Cab: | Open operator station |
| info | |
| Bore/Stroke: | 3.375x4.50 inches [86 x 114 mm] |
| Fuel system: | Zenith carburetor |
| Rated RPM: | 1600 |
| Coolant capacity: | 20 qts [18.9 L] |
| Engine Detail | |
| Chrysler, gasoline, 6-cylinder, liquid-cooled, 241.5 ci [4.0 L] |
| Transmission | |
| Type: | gear |
| Gears: | 5 forward and 1 reverse |
| Clutch: | dry disc |
| Dimensions | |
| Weight (shipping): | 4450 lbs [2018 kg] |
| Length: | 132.25 inches [335 cm] |
| Width: | 75.6 inches [192 cm] |
| Height: | 62 inches [157 cm] |
| 2WD turn radius: | 14.25 feet [4.3 m] |
| CO-OP 3 Tires | |
| Ag front: | 7.50-16 |
| Ag rear: | 12.75-28 |