John Deere 8640
The John Deere 8640 is a tractor produced by John Deere. It is equipped with a 619 ci 10.1 L engine. The listed engine power is Diesel (listed): 275 hp / 205.1 kW. Transmission: John Deere Quad-Range. Operating weight: 28,270 lbs 12823 kg.
Engine Power
Diesel (listed): 275 hp / 205.1 kW
Fuel & Capacities
214 gal
810.0 L
Transmission
John Deere Quad-Range
Operating Weight
28,270 lbs
12823 kg
Overview
 | 1979 - 1982
Iron Horses SeriesFour-wheel Drive (4WD) tractor
Iron Horses Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Four-wheel Drive (4WD) tractor | |
Built in Waterloo, Iowa, USA | |
Original price was $80,000 in 1982 | |
John Deere 8640 Engine | |
|---|---|
John Deere 10.1L 6-cyl diesel | |
Engine details ...  |
John Deere 8640 Transmission | |
|---|---|
16-speed partial power shift | |
Transmission details ...  |
John Deere 8640 Power | |
|---|---|
Engine | 275 hp
205.1 kW |
PTO (claimed) | 225 hp
167.8 kW |
Drawbar (tested) | 203.34 hp
151.6 kW |
PTO (tested) | 228.75 hp
170.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | hydraulic front and rear |
Articulated power steering | |
Hydraulic wet disc brakes | |
Cab standard | |
Capacity | |
|---|---|
Fuel | 214 gal
810.0 L |
Hydraulic system | 41 gal
155.2 L |
Hydraulics | |
|---|---|
Type | closed center |
Capacity | 41 gal
155.2 L |
Valves | 2 |
Pump flow | 33 gpm
124.9 lpm |
Tractor hitch | |
|---|---|
Rear Type | III/IIIN |
Rear lift | 8545 lbs
3876 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Engine RPM | 1000@2100 |
Dimensions & Tires | |
|---|---|
Wheelbase | 125 inches
317 cm |
Weight | 28,270 lbs
12823 kg |
Front tire | 18.4-34 |
Rear tire | 18.4-34 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 90 |
Batteries | 2 |
Battery CCA | 975 |
Battery volts | 6 |
References | |
|---|---|
 | |
Explore Discover Deere '79 published in 1979, by John Deere | |
Move up to John Deere... published in 1981 |
Engine
Engine Detail — 619 ci / 10.1 L Diesel
Manufacturer | John Deere |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 619 ci
10.1 L |
Bore/Stroke | 5.12x5.00 inches
130 x 127 mm |
Power | 275 hp
205.1 kW |
Air cleaner | dual paper elements |
Compression | 15.2:1 |
Rated RPM | 2100 |
Idle RPM | 800-2300 |
Operating RPM | 1500-2100 |
Starter volts | 12 |
Oil capacity | 26 qts
24.6 L |
Coolant capacity | 48 qts
45.4 L |
Transmission
Transmission — John Deere Quad-Range
Transmission | John Deere Quad-Range |
Type | partial power shift |
Gears | 16 forward and 6 reverse |
Clutch | hydraulic wet disc |
Oil capacity | 164 qts
155.2 L |
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. | |
With 18.4-38 tires. | |
 | |
Dimensions
John Deere 8640 Tires | |
|---|---|
Ag front | 18.4-34 |
Ag rear | 18.4-34 |
Dimensions | |
|---|---|
Wheelbase | 125 inches
317 cm |
Length | 223.5 inches
567 cm |
Operating weight | 28,270 lbs
12823 kg |
Ground clearance | 18.4 inches
46 cm |
Front axle | Rack-and-pinion: 3.937 by 95.8 inches
99 by 2433 mm |
Front axle | Rack-and-pinion: 3.937 by 118.4 inches
99 by 3007 mm |
Rack-and-pinion rear axle | 3.937 by 95.8 inches
99 by 2433 mm |
Rack-and-pinion rear axle | 3.937 by 118.4 inches
99 by 3007 mm |
Front tread | 63 to 130 inches
160 to 330 cm |
Rear tread | 63 to 130 inches
160 to 330 cm |
John Deere 8640 Height | |
|---|---|
Hood | 87.1 inches
221 cm |
Cab | 126.6 inches
321 cm |
Exhaust | 134.5 inches
341 cm |
Tests
Nebraska Tractor Test 1324 | |
|---|---|
Diesel 16-speed 4WD
September 11 - 18, 1979
Link: Nebraska Tractor Test 1324 file | |
PTO performance | |
Power at rated engine speed | 228.75 hp
170.6 kW |
Fuel use | 14.7 gal/hour
55.6 l/hour |
Drawbar performance | |
Max power | 203.34 hp
151.6 kW |
Fuel use | 14.5 gal/hour
54.9 l/hour |
Max pull | 27,782 lbs
12601 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 8640 based on its 275 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 8640.
Estimated Continuous Field Runtime: 15 hrs
Approximately 15 hours of continuous field operation at ~75% rated power on a full tank (214 gal / 810.1 L).
Estimated 75% Load Fuel Burn~14.3 gal/hr (54.1 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 8640 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 8640.
Converted Equivalents:
Horsepower (HP)275 hp
Kilowatts (kW)205.1 kW
Metric Horsepower (PS / CV)278.8 PS
Direct Competitor Comparison
Compare John Deere 8640 against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 8640
Engine Power:Diesel (listed): 275 hp / 205.1 kW
★ Baseline Reference
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