Tractor · 1923Unverified
John Deere Unstyled D
John Deere Unstyled D — Model year 1923-19391939-1953 · 15 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
15 hp
Max power
16.8 kW
Weight
4090 to 5880 pounds
Hover a source tag to verify
Overview
ManufacturerJohn DeereReference
Standard-tread tractorReference
Built in Waterloo, Iowa, USAReference
Total built160,000Reference
Original price was $1,000 in 1924Reference
The D had the longest run of any model of John Deere tractor, the styled and unstyled versions ran from March 1, 1923 until July 3, 1953. Serial numbers 31321 through 31412 are not model Ds, but are Waterloo Boy Ns which were built after model D production had begun.Reference
Two-wheel driveReference
Manual steeringReference
Open operator station with steel pan seat.Reference
Engine
John Deere 7.6L 2-cyl all fuelReference
John Deere 8.2L 2-cyl all fuelReference
Fuel tank68.1 LReference
Fuel tank88.9 LReference
Aux. fuel9.5 LReference
Aux. fuel5.7 LReference
Drawbar (claimed)11.2 kWReference
Belt (claimed)20.1 kWReference
Plows3 (14-inch)Reference
Drawbar (tested)22.3 kWReference
Belt (tested)31.0 kWReference
John DeereReference
all fuelReference
2-cylinderReference
liquid-cooledReference
Used from beginning until 1927, S/N 53388Reference
Displacement7.6 LReference
Bore/Stroke165 x 178 mmReference
Compression3.91:1Reference
Rated RPM800Reference
Firing order1-2Reference
Coolant capacity49.2 LReference
The larger 501 cubic inch engine was introduced in 1927, replacing the 465..Reference
Displacement8.2 LReference
Bore/Stroke171 x 178 mmReference
Rated RPM900Reference
Oil capacity12.3 LReference
Coolant capacity49.2 LReference
Coolant capacity53.0 LReference
Belt power (max)22.7 kWReference
Max power16.8 kWReference
Belt power (max)31.0 kWReference
Max power22.3 kWReference
Transmission
2-speed unsynchronized gearReference
3-speed unsynchronized gearReference
Typeunsynchronized gearReference
Gears2 forward and 1 reverseReference
Original transmission, used from 1923 to 1935Reference
Gears3 forward and 1 reverseReference
Three-speed transmission was introduced in 1935Reference
PTO & Hydraulics
Rear PTOoptionalReference
Rear PTO Type525Reference
Dimensions
Weight4090 to 5880 poundsReference
Front tire28x5Reference
Rear tire46x12Reference
Ag front28x5 (steel)Reference
Ag front28x6 (steel)Reference
Ag front7.50x18Reference
Ag rear46x12 (steel)Reference
Ag rear12.75x28Reference
Length276 cmReference
Length330 cmReference
Width142 cmReference
Width168 cmReference
Weight1855 kgReference
Weight2667 kgReference
D Serial Number Location
Serial number plate on the tractor's operator platform, ahead of seat mount.Reference
D Serial Numbers
192430401 (model years)Reference
192531280Reference
192635309Reference
192743410Reference
192853388Reference
192971645Reference
193095367Reference
1931109944Reference
1932115509Reference
1933115665Reference
1934116273Reference
1935119100Reference
1936125079Reference
1937130700Reference
1938138413Reference
1939142300Reference
Final143799Reference
FAQ: How to read a serial number table.Reference
Capacities
Diameter33 cmReference
Width21 cmReference
RPM900Reference
Speed951.59 meters/minReference
Questions
My father had two John Deere Model D's, my dad said the tractors ran on Distillate. I remember him mixing gas and diesel to fuel the tractors. Can you tell me the ratio of gas and diesel to mix the fuel to spark these ol' gems up again? You can use gasoline. The D will run without problems on gasoline, it is what was used in the starting fuel tank.Reference
John Deere D Height
Hood142 cmReference
Hood147 cmReference
Hood155 cmReference
Test results
NTTL 102: 465ci kerosene 2-speed 2WDReference
NTTL 236: 501ci distillate 3-speed 2WDReference
465ci kerosene 2-speed 2WDApril 11 - 17, 1924Link: Nebraska Tractor Test 102 fileReference
Belt fuel use (max)14.8 l/hourReference
Drawbar performanceReference
Max pull1486 kgReference
501ci distillate 3-speed 2WDJune 26 - July 2, 1935Link: Nebraska Tractor Test 236 fileReference
Belt fuel use (max)16.3 l/hourReference
Gear 2 used for power test.Reference
Max pull1831 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.