The John Deere AR is a 2WD standard-tread tractor manufactured by John Deere in Waterloo, Iowa, USA from 1935 to 1953.
The John Deere AR is equipped with one of two engines: a 5.3 L (321.0 cu·in) two-cylinder gasoline engine or a 5.3 L (321.0 cu·in) two-cylinder kerosene engine and a unsynchronized gear transmission with 6 forward and 1 reverse gears.
The AR and AO models was the “regular”, or fixed-tread version of the model A.
The tractor could be equipped with the following engines:
- John Deere. It is a 5.3 L, 5,260 cm2, (321.0 cu·in) two-cylinder natural aspirated gasoline engine with 140.0 mm (5.51 in) of the cylinder bore and 171.0 mm (6.73 in) of the piston stroke. The compression ratio rating is 5.6:1. This engine produced 35.4 PS (26.0 kW; 34.9 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 kerosene 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 4.5:1. This engine produced 27.5 PS (20.2 kW; 27.1 HP) at 975 rpm of output power.
The JD AR is equipped with manual steering, mechanical shoe brakes, open operator station and 75.7 liters (20 US gal.; 16.7 Imp. gal) fuel tank.
John Deere AR Specifications
| General Specifications | |
| Model | John Deere AR |
| Length | 3,140 mm (123.6 in) |
| Width | AR: 1,840 mm (72.4 in) AO: 1,920 mm (75.6 in) |
| Height (hood) | 1,440 mm (56.7 in) |
| Wheel base | 1,920 mm (75.6 in) |
| Weight (shipping) | AR: 2,380 kg (5,247 lbs) AO: 2,495 kg (5,501 lbs) |
| Fuel tank capacity | 75.7 liters (20 US gal.; 16.7 Imp. gal) |
| Battery | Two 6V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled |
| Cylinders | 2 |
| Fuel type | 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 | 5.6:1 |
| Horsepower | 35.4 PS (26.0 kW; 34.9 HP) at 975 rpm |
| Starter | Electric |
| Oil capacity: | 10.4 L (11 US. qt, 9.2 Imp. qt.) |
| Coolant capacity: | 33.1 L (35 US. qt, 29.1 Imp. qt.) |
| Spark plug | AC88L |
| Engine | |
| Engine model | John Deere |
| Engine type | Four-stroke, liquid-cooled |
| Cylinders | 2 |
| Fuel type | Kerosene |
| 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 | 4.5:1 |
| Horsepower | 27.5 PS (20.2 kW; 27.1 HP) at 975 rpm |
| Starter | Electric |
| Oil capacity: | 10.4 L (11 US. qt, 9.2 Imp. qt.) |
| Coolant capacity: | 33.1 L (35 US. qt, 29.1 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | Mechanical shoe |
| Transmission model | John Deere |
| Transmission type | Unsynchronized gear |
| Gears | 6 forward and 1 reverse |
| Speed | Forward: 17.7 kmh (11 mph) Reverse: 4.4 kmh (2.7 mph) |
| Transmission oil capacity | 30.3 L (8 US. gal, 6.7 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.00-16, 7.50-16, 6.50-18, 7.50-18 |
| Rear tires | Ag: 13-26, 14-26, 15-26 |
| PTO (Power take-off shaft) | |
| Rear PTO type | Transmission |
| Rear PTO speed | 540 rpm |
| Hydraulic system | |
| Hydraulic type | Powr-Trol (optional) |
| Hydraulic capacity | 7.9 L (2.1 US. gal, 1.7 Imp. gal.) |
| Pressure | 930 psi (64.1 bar) |
| Valves | 1 |
| Pump flow | 8.9 gpm (33.7 lpm) |

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