John Deere 4640
Production ended · 2WD
PTO power · claimed
155 hp
- Weight
- 15,700 lb
- Engines
- 1 Diesel
- Built
- no record
- Price new
- no record
Power
| Engine | no record |
|---|---|
| PTO | 155 hp claimed |
| PTO, tested | 156.3 hp |
| Drawbar | 132.4 hp tested |
| Listed power | 172 hp PTO basis |
Engines
| John Deere 7.6L 6-cyl dieselDiesel · 6 cyl | 466 ci |
|---|
Engine details
- John Deere 7.6L 6-cyl diesel
- Bore × stroke
- 4.56 in × 4.75 in
- Rated speed
- 2,200 rpm
- Compression
- 15.5:1
- Cooling
- liquid-cooled
- Firing order
- 1-5-3-6-2-4
Transmissions
| John Deere Quad-Rangepartial power shift | 16F / 6R |
|---|---|
| John Deere PowerShiftfull power shift | 8F / 4R |
Transmission notes
John Deere Quad-Range: 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.
John Deere PowerShift: 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.
Weight
| Weight | 15,700 lb operating |
|---|---|
| Shipping | 14,350 lb |
| Ballasted | 18,585 lb |
Dimensions
| Wheelbase | 118.5 in |
|---|---|
| Length | 171 in |
| Width | 96 in |
| Ground clearance | 14.9 in |
| Front axle clearance | 26 in |
| Rear axle clearance | 28 in |
| Front tread, narrowest | 58 in |
| Front tread, widest | 100 in |
| Rear tread, narrowest | 60 in |
| Rear tread, widest | 131.5 in |
Capacities
| Fuel tank | 83 gal |
|---|---|
| Hydraulic system | 16.5 gal |
Hydraulics
| System | closed center |
|---|---|
| Pump flow | 23 gpm |
| Remote valves | 2 or 3 |
Hitch
| Rear hitch category | III/IIIN |
|---|---|
| Rear lift capacity | 7,328 lb |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO speeds | 1000 (1.75) |
Chassis
| Drive | 2WD |
|---|---|
| Steering | hydrostatic power |
| Brakes | Differential hydraulic wet disc brakes |
| Differential lock | pedal-actuated hydraulic |
| Cab | Sound-Gard cab standard |
Tires
| Front | 11.00-16 |
|---|---|
| Rear | 18.4-38 |
Electrical
| System voltage | 6 V |
|---|---|
| Batteries | 2 |
| Charging | alternator |
| Ground | negative |
Production
| Factories | Waterloo, Iowa, USA |
|---|---|
| Built by | John Deere |
Serial numbers
Serial number plate on the rear of the 4640, above the PTO shaft.
| Year | First serial |
|---|---|
| 1978 | 1000 |
| 1979 | 7422 |
| 1980 | 13860 |
| 1981 | 19459 |
| 1982 | 25729 |
Literature
- The New Iron Horses John Deere, 1978
- Tractors 90 to 180 HP John Deere, 1979
- Tractors 90, 110, 130, 155, 180 HP John Deere, 1979
- Row-Crop Tractors Product Information Handbook John Deere, 1977
- 40 Series Row-Crop Tractors Product Information Handbook John Deere, 1982
- Performance on the Leading Edge John Deere, 1978
- Performance on the Leading Edge John Deere, 1978
Attachments
- front-end loader