John Deere A (1939-1947)

John Deere AThe John Deere A is a 2WD row-crop tractor from the Two-Cylinder Letter Series series. This second generation was manufactured by John Deere in Waterloo, Iowa, USA from 1939 to 1947.

The JD A is equipped with one of two engines: a 5.1 L (309.0 cu·in) two-cylinder all-fuel engine or a 5.3 L (321.0 cu·in) two-cylinder all-fuel/gasoline engine and one of two transmissions: unsynchronized gear transmission with 4 forward and 1 reverse gear or unsynchronized gear transmission with 6 forward and 1 reverse gear.

The tractor could be equipped with the following engines:

  • John Deere. It is a 5.1 L, 5,064 cm2, (309.0 cu·in) two-cylinder natural aspirated all-fuel engine with 140.0 mm (5.51 in) of the cylinder bore and 165.0 mm (6.5 in) of the piston stroke. The compression ratio rating is 4.45:1. This engine produced 18.2 PS (13.4 kW; 18.0 HP) at 975 rpm of output power.
  • John Deere. It is a 5.3 L, 5,260 cm2, (321.0 cu·in) two-cylinder natural aspirated all-fuel/gasoline engine. The cylinder bore is 140.0 mm (5.51 in) and the piston stroke is 171.0 mm (6.73 in). The compression ratio rating is 4.45:1 for all-fuel version or 5.60:1 for gasoline version. This engine produced 34.5 PS (25.4 kW; 34.0 HP) at 975 rpm of output power.

The John Deere Model A is equipped with manual steering, differential mechanical expanding shoe brakes, an open operator station, and 53.0 liters (14 US gal.; 11.7 Imp. gal) fuel tank for an all-fuel version or 68.1 liters (18 US gal, 15 Imp. gal) for gasoline engine version.

John Deere A variants:

  • AR – A-Regular with standard front axle
  • AO – Orchard
  • AW – Adjustable wide-front
  • AN – Single front wheel
  • AWH – High-crop, adjustable wide-front
  • ANH – High-crop, single-front wheel

John Deere A Specifications

General Specifications
Model John Deere A
Length 3,400 mm (133.9 in)
Width 2,190 mm (86.2 in)
Height 1,620 mm (63.8 in)
Wheel base
Weight 2,085 kg (4,597 lbs)
Fuel tank capacity All-fuel: 53.0 liters (14 US gal.; 11.7 Imp. gal)
Gasoline: 68.1 liters (18 US gal, 15 Imp. gal)
Battery 6V
Cabin type Open operator station
Engine
Engine model John Deere
Engine type Four-stroke, liquid-cooled, inline
Cylinders 2
Fuel type All-fuel
Displacement 5.1 L, 5,064 cm2, (309.0 cu·in)
Bore and stroke 140.0 mm X 165.0 mm (5.51 in X 6.5 in)
Compression ratio 4.45:1
Horsepower (drawbar) 18.2 PS (13.4 kW; 18.0 HP) at 975 rpm
Starter Manual or electric (option)
Oil capacity: 8.8 L (9.3 US. qt, 7.7 Imp. qt.)
Coolant capacity: 36.0 L (38 US. qt, 31.7 Imp. qt.)
Engine
Engine model John Deere
Engine type Four-stroke, liquid-cooled, inline
Cylinders 2
Fuel type All-fuel / Gasoline
Displacement 5.3 L, 5,260 cm2, (321.0 cu·in)
Bore and stroke 140.0 mm X 171.0 mm (5.51 in X 6.73 in)
Compression ratio All-fuel: 4.45:1
Gasoline: 6.50:1
Horsepower (drawbar) 34.5 PS (25.4 kW; 34.0 HP) at 975 rpm
Starter Manual or electric (option)
Oil capacity: 10.4 L (11 US. qt, 9.2 Imp. qt.)
Transmission and chassis
Chassis 4×2 2WD
Steering type Manual
Brakes Differential mechanical expanding shoe
Transmission model John Deere
Transmission type Unsynchronized gear with dry disc clutch
Gears 4 forward and 1 reverse
Speed Forward: 10.1 kmh (6.3 mph) Reverse: 5.6 kmh (3.5 mph)
Transmission model John Deere
Transmission type Unsynchronized gear with dry disc clutch
Gears 6 forward and 1 reverse
Tires
Front tires Ag: 24×4 steel
Ag: 5.50×16
Rear tires Ag: 50×6 steel
Ag: 9/10/11.00×38
PTO (Power take-off shaft)
Rear PTO type Transmission
Rear PTO speed 540 rpm