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J.I. Case 20-40

The J.I. Case 20-40 is a tractor produced by J I Case. It is equipped with a 1082 ci 17.7 L engine. Transmission: J.I. Case. Operating weight: 13,900 lbs 6305 kg.

Fuel & Capacities
Kerosene
Transmission
J.I. Case
Operating Weight
13,900 lbs 6305 kg

Overview

J.I. Case 20-40 tractor photo
1912 - 1919 Standard-tread tractor
Production
Manufacturer
J.I. Case
Standard-tread tractor
Built in Racine, Wisconsin, USA
Total built
4,465
Original price
$2,100 (1916)
J.I. Case 20-40 Transmission
2-speed gear
Transmission details ...
J.I. Case 20-40 Power
Drawbar (claimed)
20 hp 14.9 kW
Belt (claimed)
40 hp 29.8 kW
Drawbar (tested)
24.66 hp 18.4 kW
Belt (tested)
42.80 hp 31.9 kW
Performance test details ...
Mechanical
Two-wheel drive
Steering
manual
Open operator station. Optional four-post steel cab.
Dimensions & Tires
Weight
13,900 lbs 6305 kg
Front tire
38x8
Rear tire
66x20
Full dimensions and tires ...
Belt Pulley
Diameter
24 inches 60 cm
Width
8.5 inches 21 cm
References
20-40 references literature
Power Farming Machinery published in 1919, by J.I. Case

Engine

Engine options
J.I. Case 12.4L 2-cyl kerosene
J.I. Case 14.8L 2-cyl kerosene
J.I. Case 17.7L 2-cyl kerosene

Engine Detail — 755 ci / 12.4 L Kerosene

Manufacturer
J.I. Case
Fuel Type
Kerosene
Configuration
2-cylinder, liquid-cooled opposed-twin
The original engine, was used on the first model 40 tractors produced in 1912.
Displacement
755 ci 12.4 L
Bore/Stroke
7.75x8.00 inches 197 x 203 mm
Rated RPM
450
Starter type
hand-crank

Engine Detail — 904 ci / 14.8 L Kerosene

Manufacturer
J.I. Case
Fuel Type
Kerosene
Configuration
2-cylinder, liquid-cooled opposed-twin
The 8-inch bore engine replaced the original engine early in production, at the end of 1912.
Displacement
904 ci 14.8 L
Bore/Stroke
8.00x9.00 inches 203 x 229 mm
Rated RPM
475
Starter type
hand-crank
Coolant capacity
112 qts 106.0 L

Engine Detail — 1082 ci / 17.7 L Kerosene

Manufacturer
J.I. Case
Fuel Type
Kerosene
Configuration
2-cylinder, liquid-cooled
The final, 8.75-inch bore, engine replaced the 8-inch around 1916. Case did not re-rate the horsepower of the tractor, despite a 20% increase in displacement.
Displacement
1082 ci 17.7 L
Bore/Stroke
8.75x9.00 inches 222 x 229 mm
Rated RPM
475
Starter type
hand-crank

Transmission

Transmission — J.I. Case

Transmission
J.I. Case
Type
gear
Gears
2 forward and 1 reverse
20-40 gear speeds

Dimensions

J.I. Case 20-40 Tires
Ag front
38x8 steel
Ag rear
66x20 steel
Dimensions
Length
177 inches 449 cm
Width
100 inches 254 cm
Height
107 inches 271 cm
Operating weight
13,900 lbs 6305 kg
Rear axle
3.94 inch diameter 100 mm

Tests

Nebraska Tractor Test 7
1082ci kerosene 2-speed 2WD April 10 - May 7, 1920 Link: Nebraska Tractor Test 7 file
Belt power (max)
42.80 hp 31.9 kW
Belt fuel use (max)
7.7 gal/hour 29.1 l/hour
Drawbar performance
Max power
24.66 hp 18.4 kW
Max pull
5,537 lbs 2511 kg

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for J I Case J.I. Case 20-40.

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

J I Case J.I. Case 20-40 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for J I Case J.I. Case 20-40.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS

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