John Deere

8640

Farm tractor · 1979–1982 · 275 hp

John Deere8640

Engine Transmission Hydraulics Hitch Dimensions Weight Tires & Tracks Fuel Steering Cab Nebraska Tests More John Deere

The John Deere 8640 is a farm tractor manufactured from 1979 to 1982. It features a John Deere engine, and articulated power steering. The transmission is a partial power shift type with 16 forward and 6 reverse.

Engine

Engine	John Deere
Fuel Type	diesel
Cylinders	6
Cooling	liquid-cooled
Turbocharger Status	turbocharged diesel
Displacement	619 ci (10.1 L)
Bore	5.12 in (130 mm)
Stroke	5 in (127 mm)
Compression Ratio	15.2
Power Gross	275 hp (205.1 kW)
Power Rated	275 hp (205.1 kW)
Power PTO	228.75 hp (170.6 kW)
Power Drawbar	203.34 hp (151.6 kW)
Air Cleaner	dual paper elements
Starter Volts	12
Oil Capacity	26 qts (24.6 L)
Coolant Capacity	48 qts (45.4 L)
Manufacturer	John Deere
Rated	2,100 RPM
Idle	800-2300 RPM

Transmission

Transmission Type	partial power shift
Transmission Model	John Deere Quad-Range
Gears	16 forward and 6 reverse
Transmission 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.
Clutch	hydraulic wet disc
Oil Capacity	164 qts (155.2 L)
Available Options	16-speed partial power shift

Hydraulics

Type	closed center
Pump Flow	33 gpm (124.9 lpm)
Valves	2
System Capacity	41 gal (155.2 L)

Hitch

Rear Type	III/IIIN
Rear Lift	8,545 lbs (3,876 kg)

Dimensions

Length	223.5 in (567 cm)
Height Cab	126.6 in (321 cm)
Wheelbase	125 in (317 cm)
Ground Clearance	18.4 in (46 cm)
Front Tread	63 in (160 cm)
Rear Tread	63 in (160 cm)

Weight

Operating	28,270 lbs (12,823 kg)

Tires & Tracks

Front Ag	18.4-34
Rear Ag	18.4-34

Fuel

Capacity	214 gal (810 L)

Steering

Type	articulated power

Cab

Cab	standard

Nebraska Tests

NTTLTest #1324

September 11-18, 1979 shaft Hp Air Barometer Air Hp.hr/gal inch Hg Ib/hp.hr speed gal/hr Cooling dry (kW) wet

Nebraska Tractor Test

Sound

90dB(A)