John Deere

John Deere 4640

The John Deere 4640 is a row-crop tractor produced from 1978 to 1982 as part of the Iron Horses Series. It was built in Waterloo, Iowa, USA. It features a 7.6L 6-cylinder turbocharged intercooled diesel engine producing approximately 144 to 172 hp estimated engine power. The tractor offers two transmission options: a 16-speed partial power shift Quad-Range and an 8-speed full power shift PowerShift. It has a 4x2 2WD or 4x4 HFWD 4WD drive with pedal-actuated hydraulic differential lock and hydrostatic power steering. The tractor includes a Sound-Gard cab as standard. Fuel capacity is 83 gallons, and the hydraulic system holds 16.5 gallons. The rear hitch is category III/IIIN with a lift capacity of 7328 lbs. The rear PTO is independent with a 1000 rpm type. Dimensions include a wheelbase of 118.5 inches, length of 171 inches, and width options up to 118 inches. Weight ranges from 14,350 lbs shipping to 18,585 lbs ballasted. The tractor supports various tire sizes for front and rear. Electrical system features a negative ground, alternator charging, two 6-volt batteries. Attachments include the 168 Loader with a 3800 lbs lift capacity and 0.9 cu yd bucket capacity.

Power172 hp[P]

Founded1978 - 1982

Model4640

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Technical Specifications

Detailed specifications and technical data for John Deere 4640

Power

PTO (tested)	156.30 hp (116.6 kW)
PTO (claimed)	155 hp (115.6 kW)
Drawbar (tested)	132.44 hp (98.8 kW)

Tires

Ag rear	18.4-38, 24.5-32, 30.5-32, 20.8-38, 18.4-42
Ag front	11.00-16, 10.00-16, 14L-16.1, 16.5L-16.1, 9.50-20

Engine

Type	John Deere 7.6L 6-cyl diesel turbocharged intercooled diesel
Cooling	liquid-cooled
Idle RPM	800-2400
Cylinders	6-cylinder
Rated RPM	2200
Bore/Stroke	4.5625x4.75 inches (116 x 121 mm)
Compression	15.5:1
Pre-heating	ether
Displacement	466 ci (7.6 L)
Firing order	1-5-3-6-2-4
Oil capacity	20 qts (18.9 L)
Operating RPM	1500-2200
Starter volts	12
Coolant capacity	38 qts (36.0 L)

Weight

Shipping	14350 lbs (6509 kg)
Ballasted	18585 lbs (8430 kg)
Operating	15700 lbs (duals) (7121 kg)

Capacity

Fuel	83 gal (314.2 L)
Hydraulic system	16.5 gal (62.5 L)

Dimensions

Width	96 inches (243 cm), 108 inches (long axle) (274 cm), 118 inches (long axle) (299 cm)
Length	171 inches (434 cm)
Wheelbase	118.5 inches (300 cm)
Rear tread	60 to 131.5 inches (152 to 334 cm)
Front tread	58 to 100 inches (147 to 254 cm)
Height (cab)	117 inches (297 cm)
Ground clearance	14.9 inches (37 cm)
Clearance (rear axle)	28 inches (71 cm)
Clearance (front axle)	26 inches (66 cm)
Rack-and-pinion rear axle	3.937 by 96 inches (99 by 2438 mm), 3.937 by 108 inches (99 by 2743 mm), 3.937 by 118 inches (99 by 2997 mm)

Electrical

Ground	negative
Batteries	2
Battery volts	6
Charging system	alternator

Hydraulics

Type	closed center
Valves	2 or 3
Capacity	16.5 gal (62.5 L)
Pump flow	23 gpm (87.1 lpm)

Mechanical

Cab	Sound-Gard cab standard
Drive	4x2 2WD, 4x4 HFWD 4WD
Brakes	Differential hydraulic wet disc brakes
Steering	hydrostatic power
Differential lock	pedal-actuated hydraulic

Production

Type	Row-Crop tractor
Series	Iron Horses Series
Built in	Waterloo, Iowa, USA
Original price	$46,316 (1982 Quad-Range ROPS 2WD), $53,123 (1982 Power Shift Cab 2WD)
Years produced	1978 - 1982

Attachments

Loader	168 Loader
Weight	1871 lbs (848 kg)
Rollback	12°
Dump angle	37°
Bucket width	96 inches (243 cm)
Boom cylinder	2.75 inches (6 cm)
Lift capacity	3800 lbs lift (full at pin) (1723 kg)
Breakout force	5000 lbs breakout (2268 kg)
Reach (dumped)	32 inches (81 cm)
Bucket capacity	0.9 cu yd (0.7 cu m)
Bucket cylinder	2.5 inches (6 cm)
Height (at pin)	151 inches (383 cm)
Clearance (level)	151 inches (383 cm)
Clearance (dumped)	132 inches (335 cm)

Transmission

Transmission options	16-speed partial power shift, 8-speed full power shift
John Deere PowerShift	Typefull power shift Gears8 forward and 4 reverse DescriptionClutchless 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.
John Deere Quad-Range	Typepartial power shift Gears16 forward and 6 reverse DescriptionFour 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 by a hydraulically-controlled planetary that provides an under-drive to each gear.