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Tractor · 1935Unverified

John Deere AR Unstyled

Name: John Deere AR Unstyled
Brand: John Deere

John Deere AR Unstyled — Model year 1935-19411950-1953 · 18 hp. Reference specifications; pending source verification.

The John Deere AR Unstyled is a compact tractor rated at 18 hp, making it a suitable option for smaller-scale operations. Manufactured from 1935 to 1953, this model is equipped with a 2-cylinder electric liquid-cooled engine, which drives two-wheel drive through a 4-speed gearbox. The listed weight of the John Deere AR Unstyled is 2154 kg, and it is intended for use on farms and agricultural sites of around 200 acres in size.

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

Rated power

18 hp

Max power

19.8 kW

Weight

2154 kg

Catalogue coverage

Variants represented

Richest spec table

115 rows

Recorded power

18 hp

Recorded weight

2154 kg

Transmissions

4-speed unsynchronized gear

Production years

1935-1953

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Standard-tread tractorReference

Built in Waterloo, Iowa, USAReference

AR Total built17,394Reference

AO Total built2,686Reference

Original price was $2,300 in 1951Reference

The AR/AO was the "regular", or fixed-tread version of the model A. The AR was the fixed tread version for general use, the AO was the orchard version. From 1936 until 1941, an AI industrial model was also made.Reference

Two-wheel driveReference

Manual steeringReference

Mechanical shoe brakesReference

Open operator station with pressed steel seat.Reference

Variants

ARow-cropReference

ARStandard front axleReference

AOOrchardReference

AOSnarrow orchardReference

AWAdjustable wide-frontReference

ANSingle front wheelReference

AHHigh-cropReference

Engine

John Deere 5.1L 2-cyl all fuelReference

John Deere 5.3L 2-cyl all fuelReference

Drawbar (claimed)13.4 kWReference

Belt (claimed)17.9 kWReference

Plows2Reference

Drawbar (tested)19.8 kWReference

Belt (tested)22.6 kWReference

John DeereReference

all fuelReference

2-cylinderReference

liquid-cooled horizontal twinReference

Original engine, used until 1940 at serial number 259334.Reference

Displacement5.1 LReference

Bore/Stroke140 x 165 mmReference

Cooling systemthermo-siphonReference

Air cleaneroil bathReference

Compression3.96:1Reference

Rated RPM975Reference

Firing order1-2Reference

Oil capacity8.8 LReference

Coolant capacity30.3 LReference

Sparkplug gap0.762 mmReference

liquid-cooledReference

Larger engine, introduced in 1940 (serial number 260000)Reference

Displacement5.3 LReference

Bore/Stroke140 x 171 mmReference

Compression4.45:1Reference

Oil capacity10.4 LReference

Belt power (max)22.6 kWReference

Max power19.8 kWReference

Transmission

4-speed unsynchronized gearReference

TransmissionJohn DeereReference

Typeunsynchronized gearReference

Gears4 forward and 1 reverseReference

Clutchdry discReference

Capacities

Fuel60.6 LReference

Aux. fuel3.8 LReference

Diameter32 cmReference

Width18 cmReference

RPM975Reference

Speed996.70 meters/minReference

PTO & Hydraulics

Hydraulic system7.9 LReference

TypePowr-TrolReference

Capacity7.9 LReference

Valves1Reference

Pump flow33.7 lpmReference

Rear PTOtransmissionReference

Rear PTO Type540Reference

Dimensions

Weight2154 kgReference

Front tire28x6Reference

Rear tire42.75x10Reference

Ag front28x6 (steel)Reference

Ag front6.00-16Reference

Ag rear42.75x10 (steel)Reference

Ag rear11.25-24Reference

Ag rear12.75-24Reference

Ag rear11-26Reference

Ag rear12-26Reference

Length314 cmReference

Width162 cmReference

Height (hood)139 cmReference

Operating weight2154 kgReference

Ballasted weight2880 kgReference

Rear axle69 mmReference

Front tread121 cmReference

Rear tread131 cmReference

AR Serial Number Location

Left side of frame, above flywheelReference

AR Serial Numbers

1935250000 (Unstyled)Reference

1936251486 (Unstyled)Reference

1937253521 (Unstyled)Reference

1938255416 (Unstyled)Reference

1939256700 (Unstyled)Reference

1940257647 (Unstyled)Reference

1941260000 (Unstyled)Reference

1942261125 (Unstyled)Reference

1943262157 (Unstyled)Reference

1944262755 (Unstyled)Reference

1945264198 (Unstyled)Reference

1946265535 (Unstyled)Reference

1947266643 (Unstyled)Reference

1948268410 (Unstyled)Reference

1949270131 (Unstyled)Reference

Final271573 (Unstyled)Reference

1950272000 (Styled)Reference

1951275938 (Styled)Reference

1952278700 (Styled)Reference

1953282351 (Styled)Reference

Final284074 (Styled)Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundpositiveReference

Battery volts6Reference

Test results

5.3L all-fuel 4-speed 2WDOctober 27 - November 3, 1941Link: Nebraska Tractor Test 378 fileReference

Belt fuel use (max)11.7 l/hourReference

Drawbar performanceReference

Gear 3 used for power test.Reference

Max pull1926 kgReference

Gear 1 used for pull test.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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