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Tractor · 1955Unverified

J.I. Case 403

Name: J.I. Case 403
Brand: J.I. Case

J.I. Case 403 — 400 Series · 50 hp. Reference specifications; pending source verification.

The J.I. Case 403 is a tractor model with a 50 hp rating, making it a compact option within its class. It was produced from 1955 to 1957. The tractor is equipped with a 4-cylinder, diesel, liquid-cooled engine, driving through two-wheel drive and an 8-speed gearbox. Its listed weight is 3039 kg, suitable for tasks 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

50 hp

Weight

3039 kg

Catalogue coverage

Variants represented

Richest spec table

79 rows

Recorded power

50 hp

Recorded weight

3039 kg

Transmissions

8-speed

Production years

1955-1957

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

High-Clearance tractorReference

Built in Racine, Wisconsin, USAReference

Total built67Reference

Original price$5,000 (1958)Reference

Two-wheel driveReference

SteeringmanualReference

Steeringpower optionalReference

Mechanical dry discs brakesReference

Open operator station.Reference

Variants

400diesel standardReference

401diesel row-cropReference

402diesel vineyardReference

403diesel high-cropReference

405diesel orchardReference

413gasoline high-cropReference

420diesel industrialReference

Engine

J.I. Case 4.1L 4-cyl dieselReference

Belt (claimed)37.3 kWReference

Plows4 (14-inch)Reference

J.I. CaseReference

dieselReference

4-cylinder 8-valveReference

liquid-cooledReference

Displacement4.1 LReference

Bore/Stroke102 x 127 mmReference

Air cleaneroil bathReference

Pre-heatingether capsulesReference

Compression15:1Reference

Rated RPM1500Reference

Idle RPM600-1600Reference

Firing order1-3-4-2Reference

Starter volts12Reference

Coolant capacity28.0 LReference

Intake valve clearance0.305 mmReference

Exhaust valve clearance0.305 mmReference

Oil capacity8.5 LReference

Oil change120 hReference

Transmission

8-speedReference

TransmissionPowr-rangeReference

Gears8 forward and 2 reverseReference

Oil capacity56.8 LReference

Oil typeSAE 90Reference

Four gears plus reverse, with high and low ranges. All gears and ranges selected by a single lever. A "belt-neutral" position lies between the high and low ranges, intended for stationary work.Reference

Capacities

Fuel79.5 LReference

Diameter26 cmReference

Width18 cmReference

RPM1128Reference

Speed945.18 meters/minReference

PTO & Hydraulics

Hydraulic system8.5 LReference

Hydraulic system9.8 LReference

Capacity8.5 LReference

Capacity9.8 LReference

Pressure41.4 barReference

Valves2 (optional)Reference

Total flow45.4 lpmReference

TypeCase Eagle HitchReference

Rear PTOindependentReference

Rear PTO Type540 (1.375)Reference

Dimensions

Weight3039 kgReference

Front tire7.50-20Reference

Rear tire12-38Reference

Ag front7.50-20Reference

Ag rear12-38Reference

Ag rear13-38Reference

Front tread138 to 201 cmReference

Rear tread152 to 228 cmReference

403 Serial Numbers

Location:Top-right of instrument panel.Reference

19558060000Reference

19568080001Reference

19578100001Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemgeneratorReference

Charging volts12Reference

Batteries2Reference

Battery volts6Reference

Battery AH150Reference

Speeds

With 12-38 rear tires.Reference

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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