John Deere 4640

1978 - 1982

Iron Horses Series

Row-Crop tractor

Manufacturer

John Deere

Row-Crop tractor

Built in Waterloo, Iowa, USA

Original price

$46,316 (1982 Quad-Range ROPS 2WD )

$53,123 (1982 Power Shift Cab 2WD )

John Deere 7.6L 6-cyl diesel

PTO (claimed)

155 hp 115.6 kW

Drawbar (tested)

132.44 hp 98.8 kW

PTO (tested)

156.30 hp 116.6 kW

Drive

4x2 2WD

4x4 HFWD 4WD

Differential lock

pedal-actuated hydraulic

Steering

hydrostatic power

Differential hydraulic wet disc brakes

Sound-Gard cab standard.

Fuel

83 gal 314.2 L

Hydraulic system

16.5 gal 62.5 L

Type

closed center

Capacity

16.5 gal 62.5 L

Valves

2 or 3

Pump flow

23 gpm 87.1 lpm

Rear Type

III/IIIN

Rear lift

7328 lbs 3323 kg

Rear PTO

independent

Rear PTO Type

1000 (1.75)

Wheelbase

118.5 inches 300 cm

Weight

14350 to 15700 pounds

Front tire

11.00-16

Rear tire

18.4-38

Ground

negative

Charging system

alternator

Batteries

2

Battery volts

6

The New Iron Horses published in 1978, by John Deere

Tractors 90 to 180 HP published in 1979, by John Deere

Tractors 90, 110, 130, 155, 180 HP published in 1979, by John Deere

Row-Crop Tractors Product Information Handbook published in 1977, by John Deere

40 Series Row-Crop Tractors Product Information Handbook published in 1982, by John Deere

Performance on the Leading Edge published in 1978, by John Deere

Performance on the Leading Edge published in 1978, by John Deere

Manufacturer

John Deere

Configuration

turbocharged intercooled diesel, 6-cylinder, liquid-cooled

Displacement

466 ci 7.6 L

Bore/Stroke

4.5625x4.75 inches 116 x 121 mm

Pre-heating

ether

Compression

15.5:1

Rated RPM

2200

Idle RPM

800-2400

Operating RPM

1500-2200

Firing order

1-5-3-6-2-4

Starter volts

12

Oil capacity

20 qts 18.9 L

Coolant capacity

38 qts 36.0 L

16-speed partial power shift

8-speed full power shift

Transmission

John Deere Quad-Range

Type

partial power shift

Gears

16 forward and 6 reverse

Four gears (1-4) in four ranges (A-D). Power shift between pairs 1-2 and 3-4 in each range, with synchronized shift between 2-3. Two reverses in ranges A-C. Tractor must be stopped, and clutch used, to shift ranges. Power shift is provided hy a hydraulically-controlled planetary that provides an under-drive to each gear.

Transmission

John Deere PowerShift

Type

full power shift

Gears

8 forward and 4 reverse

Clutchless shift-on-the-move power shift between all eight forward and four reverse gears. Inching pedal provided for hooking up implements and other precision work.

Ag front

11.00-16

Ag rear

18.4-38

Ag front

10.00-16

14L-16.1

16.5L-16.1

9.50-20

Ag rear

24.5-32

30.5-32

20.8-38

18.4-42

Wheelbase

118.5 inches 300 cm

Length

171 inches 434 cm

Width

96 inches 243 cm

108 inches (long axle) 274 cm

118 inches (long axle) 299 cm

Height (cab)

117 inches 297 cm

Ground clearance

14.9 inches 37 cm

Clearance (front axle)

26 inches 66 cm

Clearance (rear axle)

28 inches 71 cm

Rack-and-pinion rear axle

3.937 by 96 inches 99 by 2438 mm

Rack-and-pinion rear axle

3.937 by 108 inches 99 by 2743 mm

Rack-and-pinion rear axle

3.937 by 118 inches 99 by 2997 mm

Front tread

58 to 100 inches 147 to 254 cm

Rear tread

60 to 131.5 inches 152 to 334 cm

Shipping

14350 lbs 6509 kg

Operating

15700 lbs (duals) 7121 kg

Ballasted

18585 lbs 8430 kg

NTTL 1264: diesel 16-speed 2WD

NTTL 1358: diesel 8-speed 2WD

Diesel 16-speed 2WD November 2 - 21, 1977 Link: Nebraska Tractor Test 1264 file

PTO performance

Power at rated engine speed

156.30 hp 116.6 kW

Fuel use

10.0 gal/hour 37.9 l/hour

Drawbar performance

Max power

130.33 hp 97.2 kW

Fuel use

9.8 gal/hour 37.1 l/hour

Max pull

15,362 lbs 6968 kg

Diesel 8-speed 2WD August 18 - 28, 1980 Link: Nebraska Tractor Test 1358 file

PTO performance

Power at rated engine speed

155.96 hp 116.3 kW

Fuel use

9.9 gal/hour 37.5 l/hour

Power at rated PTO speed

157.01 hp 117.1 kW

Fuel use

9.9 gal/hour 37.5 l/hour

Drawbar performance

Max power

132.44 hp 98.8 kW

Fuel use

9.8 gal/hour 37.1 l/hour

Gear 4 used for power test.

Max pull

15,989 lbs 7252 kg

Gear 2 used for pull test.