CO-OP 3
The CO-OP 3 is a tractor produced by Co Op. It is equipped with a 241.5 ci 4.0 L engine. Transmission: 5 forward and 1 reverse. Operating weight: 4450 lbs 2018 kg.
Fuel & Capacities
28 gal
106.0 L
Transmission
5 forward and 1 reverse
Operating Weight
4450 lbs
2018 kg
Overview
 | 1936 - 1950
Standard-tread tractorDuplex Machinery built
Standard-tread tractor
Duplex Machinery built |
|---|
Production | |
|---|---|
Distributor | CO-OP |
Manufacturer | Duplex Machinery |
Standard-tread tractor | |
Factories | Battle Creek, Michigan, USA |
South Saint Paul, Minnesota, USA | |
Arthurdale, West Virginia, USA | |
CO-OP 3 Engine | |
|---|---|
Chrysler 4.0L 6-cyl gasoline | |
Fuel tank | 28 gal
106.0 L |
Engine details ...  | |
CO-OP 3 Transmission | |
|---|---|
5-speed gear | |
Transmission details ...  |
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 |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
Open operator station | |
Dimensions & Tires | |
|---|---|
Weight | 4450 lbs
2018 kg |
Front tire | 7.50-16 |
Rear tire | 12.75-28 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 241.5 ci / 4.0 L Gasoline
Manufacturer | Chrysler |
Fuel Type | Gasoline |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 241.5 ci
4.0 L |
Bore/Stroke | 3.375x4.50 inches
86 x 114 mm |
Fuel system | Zenith carburetor |
Rated RPM | 1600 |
Coolant capacity | 20 qts
18.9 L |
Transmission
Transmission — 5 forward and 1 reverse gear
Type | gear |
Gears | 5 forward and 1 reverse |
Clutch | dry disc |
 | |
Dimensions
CO-OP 3 Tires | |
|---|---|
Ag front | 7.50-16 |
Ag rear | 12.75-28 |
Dimensions | |
|---|---|
Length | 132.25 inches
335 cm |
Width | 75.6 inches
192 cm |
Height | 62 inches
157 cm |
Shipping weight | 4450 lbs
2018 kg |
Tests
Nebraska Tractor Test 274 | |
|---|---|
Gasoline 5-speed 2WD
October 22 - November 5, 1936
Link: Nebraska Tractor Test 274 file | |
Belt power (max) | 42.29 hp
31.5 kW |
Drawbar performance | |
Max power | 37.50 hp
28.0 kW |
Gear 3 used for power test. | |
Max pull | 2,679 lbs
1215 kg |
Gear 1 used for pull test. | |
Photos
CO-OP 3
CO-OP 3
CO-OP 3 operator station and controls.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Co Op CO-OP 3.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Co Op CO-OP 3 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Co Op CO-OP 3.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS