J.I. Case 311

The J.I. Case 311 is a tractor produced by J I Case. It is equipped with a 148 ci 2.4 L engine. The rated power output is 33.0 hp 24.6 kW. Transmission: Tripl-Range. Operating weight: 3,561 lbs 1615 kg.

Overview

	1956 - 1958 300 SeriesRow-Crop tractor
1956 - 1958
300 Series
Row-Crop tractor

Production
Manufacturer	J.I. Case
Row-Crop tractor
Built in Rock Island, Illinois, USA
Total built	8,465
Original price	$2,500 (1958)

Variants
300	diesel utility
301	diesel row-crop
302	diesel high-crop
310	gasoline utility
311	gasoline row-crop
312	gasoline high-crop
320	industrial

J.I. Case 311 Power
Drawbar (claimed)	23 hp 17.2 kW
Belt (claimed)	29 hp 21.6 kW
Plows	3
Drawbar (tested)	29.29 hp 21.8 kW
Belt (tested)	33.0 hp 24.6 kW
Performance test details ...

Mechanical
Two-wheel drive
Steering	manual
6-inch disc brakes
Open operator station.

Hydraulics
Type	Duo-Control
Valves	1 (optional)

Tractor hitch
Type	Case Eagle Hitch

Power Take-off (PTO)
Rear PTO	transmission (4-speed)
	live (Tripl-Range)
Rear PTO Type	540

Dimensions & Tires
Tricycle Wheelbase	84.3 inches 214 cm
Wide front Wheelbase	79.7 inches 202 cm
Weight	3,561 lbs 1615 kg
Front tire	5.50x16
Rear tire	11x28
Full dimensions and tires ...

Electrical
Ground	positive
Battery volts	6

References
New Case "300" published in 1955, by J.I. Case

Engine

Engine options
J.I. Case 2.4L 4-cyl gasoline
Case 2.4L 4-cyl LP Gas

Engine Detail — 148 ci / 2.4 L Gasoline

Manufacturer	J.I. Case G148
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled vertical I-head
Displacement	148 ci 2.4 L
Bore/Stroke	3.375x4.125 inches 86 x 105 mm
Air cleaner	oil bath
Compression	7.1:1
Rated RPM	1750
Starter volts	6
Oil capacity	4 qts 3.8 L
Coolant capacity	12 qts 11.4 L

J.I. Case 311 Engine

Engine Detail — 148 ci / 2.4 L LP Gas

Manufacturer	Case
Fuel Type	LP Gas
Configuration	4-cylinder, liquid-cooled
Displacement	148 ci 2.4 L
Bore/Stroke	3.375x4.125 inches 86 x 105 mm
Air cleaner	oil bath
Rated RPM	1750

Transmission

Transmission options
4-speed sliding gear
12-speed

Transmission — 4 forward and 1 reverse sliding gear

Type	sliding gear
Gears	4 forward and 1 reverse
Clutch	234.9mm dry disc

Transmission — Tripl-Range

Transmission	Tripl-Range
Gears	12 forward and 3 reverse
Clutch	234.9mm dry disc (master foot clutch)
	wet discs (traction hand clutch)
Four gears (1-4) plus reverse (R) in three ranges (low, direct, high).

J.I. Case 311 Transmission

Dimensions

J.I. Case 311 Tires
Ag front	5.50x16
Ag rear	11x28

Dimensions
Tricycle Wheelbase	84.3 inches 214 cm
Wide front Wheelbase	79.7 inches 202 cm
Tricycle Length	131 inches 332 cm
Wide-front Length	125 inches 317 cm
Height	61 inches 154 cm
Operating weight	3,561 lbs 1615 kg
Ballasted weight	5,995 lbs 2719 kg
Ground clearance	21 inches 53 cm
Front tread	6.4.11.7 to inches 16 to 0 cm (tricycle)
Front tread	52 to 80 inches 132 to 203 cm (wide-front)
Rear tread	48 to 88 inches 121 to 223 cm

Tests

Nebraska Tractor Test 613
Gasoline 4-speed 2WD April 15 - 23, 1957 Link: Nebraska Tractor Test 613 file
Belt power (max)	33.0 hp 24.6 kW
Belt fuel use (max)	3.0 gal/hour 11.4 l/hour
Drawbar performance
Max power	29.29 hp 21.8 kW
Gear 3 used for power test.
Max pull	4,186 lbs 1898 kg
Gear 1 used for pull test.