Diesel 16-speed 4WD September 11 - 18, 1979 Link: Nebraska Tractor Test 1324 file PTO performance Drawbar performance
Power at rated engine speed
228.75hp / 170.6kW
Fuel use
14.5gal/hour / 54.9l/hour
Max power
203.34hp / 151.6kW
Max pull
27,782lbs / 12601kg
JOHN DEERE 8640 POWER
Engine
275hp / 205.1kW
PTO (claimed)
225hp / 167.8kW
Drawbar (tested)
203.34hp / 151.6kW
PTO (tested)
228.75hp / 170.6kW
ENGINE DETAIL
Description
John Deere turbocharged diesel 6-cylinder liquid-cooled
Displacement
619ci / 10.1L
Bore/Stroke
5.12x5.00inches / 130x 127mm
Power
275hp / 205.1kW
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
26qts / 24.6L
Coolant capacity
48qts / 45.4L
JOHN DEERE 8640 ENGINE
Description
John Deere 10.1L 6-cyl diesel
TRANSMISSION
Transmission
John Deere Quad-Range
Type
partial power shift
Gears
16 forward and 6 reverse
Clutch
hydraulic wet disc
Oil capacity
164qts / 155.2L
Description
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
SPEEDS
Description
With 18.4-38 tires
MECHANICAL
Chassis
4x4 articulated 4WD
Differential lock
hydraulic front and rear
Steering
articulated power
Brakes
hydraulic wet disc
Cab
Cab standard
Transmission
16-speed partial power shift
CAPACITY
Fuel
214gal / 810.0L
Hydraulic system
41gal / 155.2L
HYDRAULICS
Type
closed center
Capacity
41gal / 155.2L
Valves
2
Pump flow
33gpm / 124.9lpm
TRACTOR HITCH
Rear Type
III/IIIN
Rear lift
8545lbs / 3876kg
POWER TAKE-OFF (PTO)
Rear PTO
independent
Rear RPM
1000
Engine RPM
1000@2100
JOHN DEERE 8640 TIRES
Ag front
18.4-34
Ag rear
18.4-34
DIMENSIONS
Wheelbase
125inches / 317cm
Length
223.5inches / 567cm
Operating weight
28,270lbs / 12823kg
Ground clearance
18.4inches / 46cm
Front axle
Rack-and-pinion: 3.937 by 118.4inches / 99by 3007mm
Rear axle
Rack-and-pinion: 3.937 by 118.4inches / 99by 3007mm
Front tread
63 to 130inches / 160to 330cm
Rear tread
63 to 130inches / 160to 330cm
JOHN DEERE 8640 HEIGHT
Hood
87.1inches / 221cm
Cab
126.6inches / 321cm
Exhaust
134.5inches / 341cm
DIMENSIONS & TIRES
Wheelbase
125inches / 317cm
Weight
28,270lbs / 12823kg
Front tire
18.4-34
Rear tire
18.4-34
8640 SERIAL NUMBERS
Location
On the tractor transmission case, rear
1979
1500
1980
3198
1981
5704
1982
7960
ELECTRICAL
Ground
negative
Charging system
alternator
Charging amps
90
Batteries
2
Battery CCA
975
Battery volts
6
About John Deere Tractor
The 8640 tractor is part of the John Deere's Iron Horses Series. The 8640 is a Four-wheel Drive 4WD Tractors type, that is used mostly in Agriculture Tractors. The 8640 tractor has a engine. This setup improves real-world applicability.