John Deere Unstyled D

1923 - 1953

Model year 1923-19391939-1953

Two-Cylinder Letter Series

Standard-tread tractor

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.

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

Two-wheel drive

Manual steering

Open operator station with steel pan seat.

Rear PTO

optional

Rear PTO Type

525

Weight

4090 to 5880 pounds

Front tire

28x5

Rear tire

46x12

Diameter

13.25 inches 33 cm

Width

8.5 inches 21 cm

RPM

900

Speed

3122 ft/min 951.59 meters/min

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.

John Deere 7.6L 2-cyl all fuel

John Deere 8.2L 2-cyl all fuel

Manufacturer

John Deere

Configuration

2-cylinder, liquid-cooled

all fuel

Used from beginning until 1927, S/N 53388

Displacement

465 ci 7.6 L

Bore/Stroke

6.50x7.00 inches 165 x 178 mm

Compression

3.91:1

Rated RPM

800

Firing order

1-2

Coolant capacity

52 qts 49.2 L

Manufacturer

John Deere

Configuration

2-cylinder, liquid-cooled

all fuel

The larger 501 cubic inch engine was introduced in 1927, replacing the 465..

Displacement

501 ci 8.2 L

Bore/Stroke

6.75x7.00 inches 171 x 178 mm

Compression

3.91:1

Rated RPM

900

Firing order

1-2

Oil capacity

13 qts 12.3 L

Coolant capacity

52 qts (early) 49.2 L

56 qts (after 1931) 53.0 L

2-speed unsynchronized gear

3-speed unsynchronized gear

Type

unsynchronized gear

Gears

2 forward and 1 reverse

Original transmission, used from 1923 to 1935

Type

unsynchronized gear

Gears

3 forward and 1 reverse

Three-speed transmission was introduced in 1935

Ag front

28x5 (steel)

28x6 (steel)

7.50x18

Ag rear

46x12 (steel)

12.75x28

Length

109 inches (prior to 1930) 276 cm

130 inches (after 1930) 330 cm

Width

56 inches 142 cm

66.5 inches 168 cm

Weight

4090 lbs (early) 1855 kg

5880 lbs (late) 2667 kg

Hood

56 inches (prior to 1930) 142 cm

58 inches (1930 to 1934) 147 cm

61.25 inches (after 1934) 155 cm

NTTL 102: 465ci kerosene 2-speed 2WD

NTTL 236: 501ci distillate 3-speed 2WD

465ci kerosene 2-speed 2WD April 11 - 17, 1924 Link: Nebraska Tractor Test 102 file

Belt power (max)

30.40 hp 22.7 kW

Belt fuel use (max)

3.9 gal/hour 14.8 l/hour

Drawbar performance

Max power

22.53 hp 16.8 kW

Max pull

3,277 lbs 1486 kg

501ci distillate 3-speed 2WD June 26 - July 2, 1935 Link: Nebraska Tractor Test 236 file

Belt power (max)

41.59 hp 31.0 kW

Belt fuel use (max)

4.3 gal/hour 16.3 l/hour

Drawbar performance

Max power

29.90 hp 22.3 kW

Gear 2 used for power test.

Max pull

4,037 lbs 1831 kg