JD 4640 Engine Specifications
Engine Model …………. John Deere 6466A
Engine Type …………. 4 Stroke, six-cylinder, direct injection
turbocharged intercooled diesel
Number of Cylinders …………. 6
Displacement, cu in (L) …………. 466 (7.640)
Engine Bore, in (mm) …………. 4.56 (115.8)
Engine Stroke, in (mm) …………. 4.75 (120.6)
Aspiration …………. Turbocharged
Rated Engine Power, hp (kW) …………. 176.3 (131.5)
Rated Engine Speed, rpm …………. 2200
Idle Speed, rpm …………. 800-2400
Maximum Torque, Nm (lb-ft) …………. 718 (531)
Torque Speed, rpm …………. 1400
Compression …………. 15.5:1
Firing Order …………. 1-5-3-6-2-4
Fuel System …………. Direct injection
Air Cleaner …………. Dual dry element
Fuel Tank Capacity, gal (L) …………. 83.0 (314)
Oil Capacity, qts (L) …………. 20.0 (18.9)
Coolant Capacity, qts (L) …………. 38.0 (35.8)
Electrical System Rating, Volts …………. 12
Charging System …………. Alternator
Alternator Rating, Amps …………. 120
Power Take-Off
PTO Operational Type …………. Independent
PTO Horsepower, hp (kW) …………. 155.0 (115.5)
PTO Clutch …………. Hydraulic disc
PTO Speed, rpm …………. 1000
John Deere 4640 Transmission
Transmission Type …………. Quad Range
Gearbox Type …………. 16F/6R, Partial powershift
Number of Forward Gears …………. 16
Number of Reverse Gears …………. 6
Clutch …………. Wet disc
Maximum Speed (Forward), mph (kph) …………. 19.6 (31.5)
Maximum Speed (Reverse), mph (kph) …………. 12.6 (20.3)
Transmission Type …………. Power Shift
Gearbox Type …………. 8F/4R, Full powershift
Number of Forward Gears …………. 8
Number of Reverse Gears …………. 4
Clutch Type …………. Wet disc
Maximum Forward Speed, mph (kph) …………. 19.5 (31.4)
Maximum Reverse Speed, mph (kph) …………. 6.7 (10.8)
John Deere 4640 Wheels and Tires
Drive Wheels …………. 2WD/4WD
Steering Configuration …………. Front steer
Steering System …………. Hydrostatic power
Brakes Type …………. Differential hydraulic wet disc
Front Tire Size (2WD) …………. 11.0-16
Rear Tire Size (2WD) …………. 18.4-38
Front Tire Size (4WD) …………. 9.5-20
Rear Tire Size (4WD) …………. 20.8-38
Front Tread Width, in (mm) …………. 58-100 (1470-2540)
Rear Tread Width, in (mm) …………. 60-131.5 (1520-3340)
JD 4640 Hydraulics and Hitch
Hydraulic System Type …………. Closed center
Implement Pump Flow, gpm (Lpm) …………. 23.0 (87.0)
Hydraulic Pressure, Bar (psi) …………. 155 (2250)
Hydraulic Capacity, gal (L) …………. 16.5 (62.5)
Number of Standard Remote Valves …………. 2/3
3-Point Hitch Category …………. 3/3N
Standard Lift Capacity at lift pin, lb (kg) …………. 5500 (2500)
Optional Lift Capacity at lift pin, lb (kg) …………. 7280 (3300)
Upper Link Pin Diameter, in (mm) …………. 31.75 (1.25)
Upper Link Hole Diameter, in (mm) …………. 32.00 (1.26)
Lower Link Pin Diameter, in (mm) …………. 36.58 (1.44)
Lower Link Hole Diameter, in (mm) …………. 37.34 (1.47)
Lower Hitch Point Span (3/3N), in (mm) …………. 964.95 (37.99) /
825 (32.5)
Width of Ball, in (mm) …………. 45 (1.77)
Pin Centerline (Lower to Upper), in (mm) …………. 685 (27.0)
John Deere 4640 Dimensions and Weight
Wheelbase, in (mm) …………. 118.5 (3000)
Length, in (mm) …………. 171 (4340)
Height (Cab), in (mm) …………. 117 (2970)
Overall Width, in (mm) …………. 96 (2430)
Ground Clearance, in (mm) …………. 14.9 (370)
Front Axle Clearance, in (mm) …………. 26 (660)
Turning Radius, in (mm) …………. 162 (4100)
Shipping Weight, lb (kg) …………. 14350 (6510)
Operating Weight, lb (kg) …………. 15700 (7120)
Ballasted Weight, lb (kg) …………. 18585 (8430)