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Years in Production / 1946–1957

CO-OP

E3

Explore the specifications, hardware, and original references for the CO-OP E3.

CO-OP E-3 and E-5 tractors PA1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗

31hp

Engine estimate · from PTO

2WD Only

Drive

1946–1957

Production years

CO-OP

Manufacturer

E3 / 01

At a glance

Production

Row-Crop tractor

Built in Brantford, Ontario, Canada

Manufacturer
CO-OP
Total Built
37,328
Original Price
$2,500 (1952)

Capacity

Fuel
15 gal56.8 L
Hydraulic System
1.5 gal5.7 L

Hydraulics

Capacity
1.5 gal5.7 L

Pto

Rear Pto
live
Rear Type
540

Electrical

Ground
positive
Battery Volts
6

Mechanical

Two-wheel drive

Mechanical contracting band brakes

Open operator station.

E3 / 02

Under the hood

Engine Detail

Buda

gasoline

4-cylinder

liquid-cooled

Displacement
153.1 ci2.5 L
Bore Stroke
3.4375x4.125 inches87 x 105 mm
Compression Ratio
6:1
Rated Rpm
1650
Starter Volts
6
Coolant Capacity
18 qts17.0 L
Fuel Type
gasoline
Cylinders
4
Cooling
liquid-cooled

E3 / 03

Gears & controls

Transmission (Option 1)

Transmission Type
gear
Gears
4 forward and 1 reverse

Transmission (Option 2)

Adds a high-low shift to the basic four-speed transmission.

Transmission
Hi-low
Gears
8 forward and 2 reverse

E3 / 04

Size. Stance. Footprint.

Dimensions

Length
132 in335 cm
Height
60 in152 cm

Dimensions And Tires

Weight
3,620 lbs1642 kg
Front Tire
5.50-16
Rear Tire
11-38

Tires And Tracks

Front Ag
5.50-16
Rear Ag
11-38

E3 / 05

Tractor Photos

CO-OP E-3 and E-5 tractors PA1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗

E3 / 06

Tests (NTTL)

Nebraska Tractor Test 382

Gasoline 4-speed 2WDMay 21 - June 3, 1947

PTO performance

Drawbar performance

Gear 1 used for pull test.

Id
382
Belt Power Max
31.88 hp23.8 kW
Belt Fuel Use Max
3.0 gal/hour11.4 l/hour
Power At Rated Engine Speed
30.28 hp22.6 kW
Fuel Use
2.6 gal/hour9.8 l/hour
Max Power
27.25 hp20.3 kW
Max Pull
3,745 lbs1698 kg

CO-OP E3 · photo 1 / 1

CO-OP E-3 and E-5 tractors PA1

CO-OP E-3 and E-5 tractors PA1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗