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Tractor · 1940Unverified

J.I. Case LA

Name: J.I. Case LA
Brand: J.I. Case

J.I. Case LA — Standard-tread tractor · 51 hp. Reference specifications; pending source verification.

The J.I. Case LA tractor model has a rating of approximately 51 hp, positioning it at the lower end of its class in terms of power output. It was manufactured from 1940 to 1953. The LA model is equipped with a 4-cylinder diesel liquid-cooled engine and a two-wheel drive system with a 4-speed gearbox. The tractor's operating weight is listed at 3408 kg, and it is suitable for operations covering areas of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

51 hp

Max power

38.5 kW

Weight

3408 kg

Catalogue coverage

Variants represented

Richest spec table

107 rows

Recorded power

51 hp

Recorded weight

3408 kg

Transmissions

4-speed unsynchronized gear

Production years

1940-1953

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerJ.I. CaseReference

Standard-tread tractorReference

Built in Racine, Wisconsin, USAReference

Total built35,493Reference

The stout Case LA was often a candidate for re-powering with a Detroit Diesel 3-71 engine.Reference

Two-wheel driveReference

Manual steeringReference

Differential mechanical disc brakesReference

Open operator station.Reference

Variants

LAfarmReference

LAIindustrialReference

Engine

J.I. Case 6.6L 4-cyl gasolineReference

J.I. Case 6.6L 4-cyl tractor fuelReference

J.I. Case 6.6L 4-cyl LP gasReference

Fuel tank117.3 LReference

Fuel tank109.8 LReference

Aux. fuel7.6 LReference

Drawbar (claimed)38.0 kWReference

Belt (claimed)43.3 kWReference

Plows5Reference

Drawbar (tested)38.6 kWReference

Belt (tested)44.4 kWReference

J.I. CaseReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement6.6 LReference

Bore/Stroke117 x 152 mmReference

Air cleaneroil bathReference

Compression4.83:1Reference

Rated RPM1100Reference

Firing order1-3-4-2Reference

Starter volts6Reference

Oil capacity14.2 LReference

Coolant capacity57.7 LReference

Sparkplug gap0.762 mmReference

Intake valve clearance0.457 mmReference

Exhaust valve clearance0.457 mmReference

tractor fuelReference

Bore/Stroke117 x 152 mmReference

Compression4.09 : 1Reference

Firing order1-3-2-4Reference

LP gasReference

Compression7.58:1Reference

Rated RPM1150Reference

Belt power (max)43.6 kWReference

Max power38.5 kWReference

Belt power (max)36.4 kWReference

Max power33.2 kWReference

Belt power (max)44.4 kWReference

Max power38.6 kWReference

Transmission

4-speed unsynchronized gearReference

Typeunsynchronized gearReference

Gears4 forward and 1 reverseReference

Clutchmechanical wet discReference

PTO & Hydraulics

Rear PTO Type550Reference

Dimensions

Wheelbase208 cmReference

Weight3408 kgReference

Front tire7.50-18Reference

Rear tire15-30Reference

Ag front7.50-18Reference

Ag rear15-30Reference

Ag front30x6 (steel)Reference

Ag rear14-30Reference

Ag rear48x12 (steel)Reference

Length355 cmReference

Width170 cmReference

Width194 cmReference

Height (hood)148 cmReference

Height (hood)151 cmReference

Operating weight3408 kgReference

Ballasted weight4926 kgReference

LA Serial Number Location

Serial number plate on the dashboard of the Case LA.Reference

LA Serial Numbers

19404400001Reference

19414500001Reference

19424600001Reference

19434700001Reference

19444800001Reference

19454900001Reference

19465000001Reference

19475100001Reference

19485200001Reference

19495300001Reference

19505400001Reference

19515500001Reference

19525600001Reference

19535700001Reference

FAQ: How to read a serial number table.Reference

Capacities

Diameter33 cmReference

Width20 cmReference

RPM814Reference

Speed844.30 meters/minReference

Test results

NTTL 480: gasoline 4-speed 2WDReference

NTTL 481: tractor fuel 4-speed 2WDReference

NTTL 482: LP gas 4-speed 2WDReference

Gasoline 4-speed 2WDAugust 15 - 28, 1952Link: Nebraska Tractor Test 480 fileReference

Belt fuel use (max)22.0 l/hourReference

Drawbar performanceReference

Gear 3 used for power test.Reference

Max pull3020 kgReference

Gear 1 used for pull test.Reference

Tractor fuel 4-speed 2WDAugust 18 - 29, 1952Link: Nebraska Tractor Test 481 fileReference

Belt fuel use (max)18.9 l/hourReference

Max pull2922 kgReference

LP gas 4-speed 2WDAugust 21 - September 6, 1952Link: Nebraska Tractor Test 482 fileReference

Belt fuel use (max)25.4 l/hourReference

Max pull3118 kgReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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