CO-OP 3 Duplex Machinery built Technical Specifications

CO-OP 3 is a Row-Crop tractor that was produced by the John Deere between 1936 – 1950.

Below you will find detailed technical specifications for CO-OP 3 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

CO-OP 3 Production

Distributor: CO-OP
Manufacturer: Duplex Machinery
Type: Standard-tread tractor
Factories: Battle Creek, Michigan, USA
  South Saint Paul, Minnesota, USA
  Arthurdale, West Virginia, USA

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

CO-OP 3 Mechanical

Chassis: 4×2 2WD
Steering: manual
Cab: Open operator station
Transmission: 5-speed gear

CO-OP 3 Engine detail

Engine Detail

CO-OP 3 Transmission overview

Engine Oil

Gears: 5 forward and 1 reverse

CO-OP 3 Dimensions

CO-OP 3 Tests

Nebraska Tractor Test 274

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.


Is CO-OP 3 a good tractor?

The CO-OP 3 is one of the great tractors in the Duplex Machinery stable, and it has earned Duplex Machinery a fantastic reputation.

How much oil does a CO-OP 3 take?

Check out the CO-OP 3 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year Duplex Machinery made the ?

The CO-OP 3 was an agricultural tractor model made from 1936 – 1950

Leave a Comment