john deere d

John Deere Unstyled D tractor photo
1923 - 1953 Model year 1923-19391939-1953 Two-Cylinder Letter SeriesStandard-tread tractor
1923 - 1953
Model year 1923-19391939-1953
Two-Cylinder Letter Series
Standard-tread tractor
1923 - 1953
Model year 1923-19391939-1953
Two-Cylinder Letter Series
Standard-tread tractor
1923 - 1953
Model year 1923-19391939-1953
Two-Cylinder Letter Series
Standard-tread tractor
Production
Manufacturer
John Deere
Standard-tread tractor
Built in Waterloo, Iowa, USA
Total built
160,000
Original price was $1,000 in 1924
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.
John Deere D Engines
John Deere 7.6L 2-cyl all fuel
John Deere 8.2L 2-cyl all fuel
Fuel tank
18 gal (early) 68.1 L
 
23.5 gal (after 1931) 88.9 L
Aux. fuel
2.5 gal (early) 9.5 L
 
1.5 gal (after 1931) 5.7 L
Engine details ...
John Deere D Transmissions
2-speed unsynchronized gear
3-speed unsynchronized gear
Transmission details ...
John Deere D Power
Drawbar (claimed)
15 hp 11.2 kW
Belt (claimed)
27 hp 20.1 kW
Plows
3 (14-inch)
Drawbar (tested)
29.90 hp 22.3 kW
Belt (tested)
41.59 hp 31.0 kW
Performance test details ...
Mechanical
Two-wheel drive
Manual steering
Open operator station with steel pan seat.
Photos
John Deere
John Deere D photos...
Power Take-off (PTO)
Rear PTO
optional
Rear PTO Type
525
Dimensions & Tires
Weight
4090 to 5880 pounds
Front tire
28x5
Rear tire
46x12
Full dimensions and tires ...
D Serial Number Location
John Deere D serial number location
Operator's platform, ahead of seat mount.
D Serial Numbers
1924
30401 (model years)
1925
31280
1926
35309
1927
43410
1928
53388
1929
71645
1930
95367
1931
109944
1932
115509
1933
115665
1934
116273
1935
119100
1936
125079
1937
130700
1938
138413
1939
142300
Final
143799
FAQ: How to read a serial number table.
Belt Pulley
Diameter
13.25 inches 33 cm
Width
8.5 inches 21 cm
RPM
900
Speed
3122 ft/min 951.59 meters/min
References
Unstyled D references literature
The John Deere Unstyled Letter Series by J.R. Hobbs
Tractors 1918-1976 published by John Deere*
Quality Equipment for Your Farming Operations published in 1929, by John Deere
15-27 Farm Tractor published in 1927, by John Deere
Two-Cylinder Model D Tractor published in 1937, by John Deere
Instructions for Model D (DIR-3C) published in 1930
*Publication contains known errors.

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