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J.I. Case LA

The J.I. Case LA is a tractor produced by J I Case. It is equipped with a 403.2 ci 6.6 L engine. Transmission: 4 forward and 1 reverse. Operating weight: 7515 lbs 3408 kg.

Fuel & Capacities
LP gas
Transmission
4 forward and 1 reverse
Operating Weight
7515 lbs 3408 kg

Overview

J.I. Case LA tractor photo
1940 - 1953 Standard-tread tractor
Production
Manufacturer
J.I. Case
Standard-tread tractor
Built in Racine, Wisconsin, USA
Total built
35,493
The stout Case LA was often a candidate for re-powering with a Detroit Diesel 3-71 engine.
Variants
LA
farm
LAI
industrial
J.I. Case LA Transmission
4-speed unsynchronized gear
Transmission details ...
J.I. Case LA Power
Drawbar (claimed)
51 hp 38.0 kW
Belt (claimed)
58 hp 43.3 kW
Plows
5
Drawbar (tested)
51.73 hp 38.6 kW
Belt (tested)
59.60 hp 44.4 kW
Performance test details ...
Mechanical
Two-wheel drive
Manual steering
Differential mechanical disc brakes
Open operator station.
Power Take-off (PTO)
Rear PTO Type
550
Dimensions & Tires
Wheelbase
82 inches 208 cm
Weight
7515 lbs 3408 kg
Front tire
7.50-18
Rear tire
15-30
Full dimensions and tires ...
Belt Pulley
Diameter
13 inches 33 cm
Width
8.25 inches 20 cm
RPM
814
Speed
2770 ft/min 844.30 meters/min
References
LA references literature
4 Great Tractors published in 1945, by J.I. Case

Engine

Engine options
J.I. Case 6.6L 4-cyl gasoline
J.I. Case 6.6L 4-cyl tractor fuel
J.I. Case 6.6L 4-cyl LP gas

Engine Detail — 403.2 ci / 6.6 L Gasoline

Manufacturer
J.I. Case
Fuel Type
Gasoline
Configuration
4-cylinder, liquid-cooled
Displacement
403.2 ci 6.6 L
Bore/Stroke
4.625x6.00 inches 117 x 152 mm
Air cleaner
oil bath
Compression
4.83:1
Rated RPM
1100
Firing order
1-3-4-2
Starter volts
6
Oil capacity
15 qts 14.2 L
Coolant capacity
61 qts 57.7 L
Sparkplug gap
0.030 inches 0.762 mm
Intake valve clearance
0.018 inches*Cold 0.457 mm
Exhaust valve clearance
0.018 inches*Cold 0.457 mm

Engine Detail — 403.2 ci / 6.6 L

Manufacturer
J.I. Case
Configuration
4-cylinder, liquid-cooled
tractor fuel
Displacement
403.2 ci 6.6 L
Bore/Stroke
4.625x6 inches 117 x 152 mm
Air cleaner
oil bath
Compression
4.09 : 1
Rated RPM
1100
Firing order
1-3-2-4
Starter volts
6
Oil capacity
15 qts 14.2 L
Sparkplug gap
0.030 inches 0.762 mm
Intake valve clearance
0.018 inches 0.457 mm
Exhaust valve clearance
0.018 inches 0.457 mm

Engine Detail — 403.2 ci / 6.6 L LP Gas

Manufacturer
J.I. Case
Fuel Type
LP gas
Configuration
4-cylinder, liquid-cooled
Displacement
403.2 ci 6.6 L
Bore/Stroke
4.625x6.00 inches 117 x 152 mm
Air cleaner
oil bath
Compression
7.58:1
Rated RPM
1150
Firing order
1-3-2-4

Transmission

Transmission — 4 forward and 1 reverse unsynchronized gear

Type
unsynchronized gear
Gears
4 forward and 1 reverse
Clutch
mechanical wet disc
LA unsynchronized gear speeds

Dimensions

J.I. Case LA Tires
Ag front
7.50-18
Ag rear
15-30
Ag front
30x6 (steel)
Ag rear
14-30
48x12 (steel)
Dimensions
Wheelbase
82 inches 208 cm
Length
140 inches 355 cm
Width
67 inches (steel) 170 cm
76.75 inches (rubber) 194 cm
Height (hood)
58.5 inches (steel) 148 cm
59.5 inches (rubber) 151 cm
Operating weight
7515 lbs 3408 kg
Ballasted weight
10860 lbs 4926 kg

Tests

Tractor Tests
NTTL 480: gasoline 4-speed 2WD
NTTL 481: tractor fuel 4-speed 2WD
NTTL 482: LP gas 4-speed 2WD
Nebraska Tractor Test 480
Gasoline 4-speed 2WD August 15 - 28, 1952 Link: Nebraska Tractor Test 480 file
Belt power (max)
58.53 hp 43.6 kW
Belt fuel use (max)
5.8 gal/hour 22.0 l/hour
Drawbar performance
Max power
51.68 hp 38.5 kW
Gear 3 used for power test.
Max pull
6,659 lbs 3020 kg
Gear 1 used for pull test.
Nebraska Tractor Test 481
Tractor fuel 4-speed 2WD August 18 - 29, 1952 Link: Nebraska Tractor Test 481 file
Belt power (max)
48.86 hp 36.4 kW
Belt fuel use (max)
5.0 gal/hour 18.9 l/hour
Drawbar performance
Max power
44.51 hp 33.2 kW
Gear 3 used for power test.
Max pull
6,444 lbs 2922 kg
Gear 1 used for pull test.
Nebraska Tractor Test 482
LP gas 4-speed 2WD August 21 - September 6, 1952 Link: Nebraska Tractor Test 482 file
Belt power (max)
59.60 hp 44.4 kW
Belt fuel use (max)
6.7 gal/hour 25.4 l/hour
Drawbar performance
Max power
51.73 hp 38.6 kW
Gear 3 used for power test.
Max pull
6,874 lbs 3118 kg
Gear 1 used for pull test.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for J I Case J.I. Case LA.

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 LA Specification Unit Converter

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

Converted Equivalents:

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

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