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John Deere 4640 - transmission

John Deere 4640 tractor photo
1978 - 1982   Iron Horses Series
Row-Crop tractor
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more John Deere 4640 specifications...




 

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: 
4640 Quad-Range partial power shift speeds
John Deere 4640 Quad-Range transmission photo
 
 

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: 
4640 PowerShift full power shift speeds
John Deere 4640 PowerShift transmission photo
 
 

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Last update:September 14, 2017
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