John Deere AOS
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| Production | |
| Manufacturer | John Deere |
| Standard-tread tractor | |
| Built in Waterloo, Iowa, USA | |
| Total built | 820 |
| The John Deere AO Streamlined (AOS) was a modified version of the AR/AO. The AOS was lower, narrower, and shorter than the AO which allowed for greater maneuverability and improved clearance in narrow crop operations. | |
| Variants | |
| A | Row-crop |
| AR | Standard front axle |
| AO | Orchard |
| AOS | narrow orchard |
| AW | Adjustable wide-front |
| AN | Single front wheel |
| AWH | High-crop, adjustable wide-front |
| ANH | High-crop, single-front wheel |
| John Deere AOS Engine | |
| John Deere 5.1L 2-cyl all fuel | |
| Fuel tank | 16 gal 60.6 L |
| Aux. fuel | 1 gal 3.8 L |
 Engine details ... | |
| John Deere AOS Transmission | |
| 4-speed unsynchronized gear | |
 Transmission details ... |
| John Deere AOS Power | |
| Drawbar (claimed) | 18 hp 13.4 kW |
| Belt (claimed) | 24 hp 17.9 kW |
| Plows | 2 *16-inch |
| Mechanical | |
| Two-wheel drive | |
| Manual steering | |
| Mechanical shoe brakes | |
| Open operator station with pressed steel seat. |
| Photos | |
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 John Deere AOS photos... | |
| Power Take-off (PTO) | |
| Rear PTO | transmission |
| Rear PTO Type | 540 |
| Dimensions & Tires | |
| Wheelbase | 68.75 inches 174 cm |
| Rear tire | 11.25x24 |
 Full dimensions and tires ... | |
| AOS Serial Number Location | |
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| Left side of frame, above flywheel |
| AOS Serial Numbers | |
| 1937 | 1000 |
| 1938 | 1539 |
| 1939 | 1700 |
| 1940 | 1767 |
| 1941 | 1878 |
| Final | 1891 |
FAQ: How to read a serial number table. | |
| Belt Pulley | |
| Diameter | 12.75 inches 32 cm |
| Width | 6.25 inches 15 cm |
| RPM | 975 |
| Speed | 3270 ft/min 996.70 meters/min |
| Electrical | |
| Ground | positive |
| Battery volts | 6 |
| References | |
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| The John Deere Unstyled Letter Series by J.R. Hobbs | |
| General Catalog published in 1940, by John Deere |
| Page information | |
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| Copyright 2025 TractorData.com® | |
| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on March 16, 2025 | |
| http://techpubs.deere.com/ - Official operator manuals for purchase or download from Deere. |