| | 1978 - 1982 |
| Iron Horses Series | | Row-Crop tractor |
|
Series map:
4440
4640
4840
144.4hp*
172.2hp*
200.0hp*
*Estimated engine power for comparison only.
| Transmission options |
| 16-speed partial power shift |
| 8-speed full power shift |
| Transmission |
| Transmission | John Deere Quad-Range
|
| Type | partial power shift
|
| Gears | 16 forward and 6 reverse
|
| Four gears (1-4) in four ranges (A-D). Power shift between pairs 1-2 and 3-4 in each range, with synchronized shift between 2-3. Two reverses in ranges A-C. Tractor must be stopped, and clutch used, to shift ranges. Power shift is provided hy a hydraulically-controlled planetary that provides an under-drive to each gear. |
| Speeds |
|
| Shift Pattern |
 |
| Transmission |
| Transmission | John Deere PowerShift
|
| Type | full power shift
|
| Gears | 8 forward and 4 reverse
|
| Clutchless shift-on-the-move power shift between all eight forward and four reverse gears. Inching pedal provided for hooking up implements and other precision work. |
| Speeds |
|
| Shift Pattern |
 |
| Page information |
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| 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 January 25, 2024 |
©2000-2024 - TractorData.com®. Notice: Every attempt is made to ensure the data listed
is accurate. However, differences between sources, incomplete listings,
errors, and data entry mistakes do occur.
Consult official
literature from the manufacturer before attempting any service or repair.
