John Deere 8640: all source data
All 73 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | John Deere |
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| (no label) | Four-wheel Drive (4WD) tractor |
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| (no label) | Built in Waterloo, Iowa, USA |
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| (no label) | Original price was $80,000 in 1982 |
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Engine| (no label) | John Deere 10.1L 6-cyl diesel |
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Transmission| (no label) | 16-speed partial power shift |
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Power| Engine | 275 hp | 205.1 kW |
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| PTO (claimed) | 225 hp | 167.8 kW |
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| Drawbar (tested) | 203.34 hp | 151.6 kW |
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| PTO (tested) | 228.75 hp | 170.6 kW |
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Mechanical| (no label) | Four-wheel drive |
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| Differential lock | hydraulic front and rear |
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| (no label) | Articulated power steering |
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| (no label) | Hydraulic wet disc brakes |
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| (no label) | Cab standard |
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Capacity| Fuel | 214 gal | 810.0 L |
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| Hydraulic system | 41 gal | 155.2 L |
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Hydraulics| Type | closed center |
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| Capacity | 41 gal | 155.2 L |
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| Valves | 2 |
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| Pump flow | 33 gpm | 124.9 lpm |
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Hitch| Rear Type | III/IIIN |
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| Rear lift | 8545 lbs | 3876 kg |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 1000 |
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| Engine RPM | 1000@2100 |
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Dimensions| Wheelbase | 125 inches | 317 cm |
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| Weight | 28,270 lbs | 12823 kg |
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| Front tire | 18.4-34 |
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| Rear tire | 18.4-34 |
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Serial location| (no label) | On transmission case on the rear of the 8640. |
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Electrical| Ground | negative |
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| Charging system | alternator |
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| Charging amps | 90 |
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| Batteries | 2 |
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| Battery CCA | 975 |
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| Battery volts | 6 |
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Engine
Engine detail| (no label) | John Deere |
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| (no label) | turbocharged diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 619 ci | 10.1 L |
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| Bore/Stroke | 5.12x5.00 inches | 130 x 127 mm |
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| Power | 275 hp | 205.1 kW |
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| Air cleaner | dual paper elements |
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| Compression | 15.2:1 |
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| Rated RPM | 2100 |
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| Idle RPM | 800-2300 |
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| Operating RPM | 1500-2100 |
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| Starter volts | 12 |
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| Oil capacity | 26 qts | 24.6 L |
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| Coolant capacity (Coolant) | 48 qts | 45.4 L |
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Transmission
Transmission| Transmission | John Deere Quad-Range |
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| Type | partial power shift |
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| Gears | 16 forward and 6 reverse |
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| Clutch | hydraulic wet disc |
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| Oil capacity | 164 qts | 155.2 L |
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| (no label) | Four gears (1-4) in four ranges (A-D). Tractor must be stopped to select range. Power shift between gears 1-2 and 3-4 within range. |
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Dimensions
Tires| Ag front | 18.4-34 |
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| Ag rear | 18.4-34 |
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Dimensions| Wheelbase | 125 inches | 317 cm |
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| Length | 223.5 inches | 567 cm |
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| Operating weight | 28,270 lbs | 12823 kg |
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| Ground clearance | 18.4 inches | 46 cm |
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| Front axle | Rack-and-pinion: 3.937 by 95.8 inches | 99 by 2433 mm |
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| Front axle | Rack-and-pinion: 3.937 by 118.4 inches | 99 by 3007 mm |
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| Rack-and-pinion rear axle (Rack-and-pinion) | 3.937 by 95.8 inches | 99 by 2433 mm |
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| Rack-and-pinion rear axle (Rack-and-pinion) | 3.937 by 118.4 inches | 99 by 3007 mm |
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| Front tread | 63 to 130 inches | 160 to 330 cm |
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| Rear tread | 63 to 130 inches | 160 to 330 cm |
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Height| Hood | 87.1 inches | 221 cm |
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| Cab | 126.6 inches | 321 cm |
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| Exhaust | 134.5 inches | 341 cm |
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