Deere 4840 tractor specifications

1978 - 1982

1978 - 1982 Iron Horses SeriesRow-Crop tractor

Series:

Series:4640 ← 48404850 ↓

1978 - 1982

Iron Horses Series

Row-Crop tractor

Production

Production
Manufacturer:	John Deere
Type:	Row-Crop tractor
Factory:	Waterloo, Iowa, USA
Original price:	$46,316 (1982 Quad-Range ROPS 2WD )
Original price:	$53,123 (1982 Power Shift Cab 2WD )

John Deere 4640 Power

John Deere 4640 Power
PTO (claimed):	155 hp 115.6 kW
Drawbar (tested):	132.44 hp 98.8 kW
PTO (tested):	156.30 hp 116.6 kW
power test details ...

John Deere 4640 Engine

John Deere 4640 Engine
John Deere 7.6L 6-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
	4x4 HFWD 4WD
Differential lock:	pedal-actuated hydraulic
Steering:	hydrostatic power
Brakes:	differential hydraulic wet disc
Cab:	Sound-Gard cab standard.
Transmissions:	16-speed partial power shift
	8-speed full power shift
Transmission details ...

Capacity

Capacity
Fuel:	83 gal 314.2 L
Hydraulic system:	16.5 gal 62.5 L

Hydraulics

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

Tractor hitch

Tractor hitch
Rear Type:	III/IIIN
Rear lift:	7328 lbs 3323 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	independent
Rear RPM:	1000 (1.75)

Dimensions & Tires

Dimensions & Tires
Wheelbase:	118.5 inches 300 cm
Weight:	14350 to 15700 pounds
Front tire:	11.00-16
Rear tire:	18.4-38
Full dimensions and tires ...

John Deere 4640 attachments

John Deere 4640 attachments
front-end loader
Attachment details ...

4640 Serial Numbers

4640 Serial Numbers
Location:	Serial number plate on the rear of the 4640, above the PTO shaft.
photo of 4640 serial number
1978:	1000
1979:	7422
1980:	13860
1981:	19459
1982:	25729
how to read serial numbers...

Electrical

Electrical
Ground:	negative
Charging system:	alternator
Batteries:	2
Battery volts:	6

Production

Production Manufacturer:John Deere
Type:Row-Crop tractor
Factory:Waterloo, Iowa, USA
Original price:$57,648 (1982 )

John Deere 4840 Power

John Deere 4840 Power Drawbar (claimed):157 hp
117.1 kW
PTO (claimed):180 hp
134.2 kW
Drawbar (tested):151.21 hp
112.8 kW
PTO (tested):180.63 hp
134.7 kW
power test details ...

1978 - 1982

Iron Horses Series

Row-Crop tractor

Series:

Series:	4640 ←	4840
		4850 ↓

Nebraska Tractor Test 1263

Nebraska Tractor Test 1263
Diesel 8-speed 2WD November 2 - 12, 1977 Link: Nebraska Tractor Test 1263 file
PTO performance
Power at rated engine speed:	180.63 hp 134.7 kW
Fuel use:	11.5 gal/hour 43.5 l/hour
Power at rated PTO speed:	181.63 hp 135.4 kW
Fuel use:	11.5 gal/hour 43.5 l/hour
Drawbar performance
Max power:	151.21 hp 112.8 kW
Fuel use:	11.3 gal/hour 42.8 l/hour
Gear 4 used for power test.
Max pull:	17,307 lbs 7850 kg
Gear 2 used for pull test.

John Deere 4840 Engine

John Deere 4840 Engine John Deere 7.6L 6-cyl diesel Engine details ...

1978 - 1982

Iron Horses Series

Row-Crop tractor

Series:

Series:	4640 ←	4840
		4850 ↓

Engine Detail

Engine Detail
John Deere
turbocharged intercooled diesel
6-cylinder
liquid-cooled
Displacement:	466 ci 7.6 L
Bore/Stroke:	4.5625x4.75 inches 116 x 121 mm
Air cleaner:	dual paper elements
Pre-heating:	ether injection
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
Coolant capacity:	40 qts 37.9 L

Mechanical

Mechanical Chassis:4x2 2WD
Differential lock:pedal-actuated hydraulic
Steering:power
Brakes:differential hydraulic wet disc
Cab:Sound-Gard cab.
Transmission:8-speed full power shift
Transmission details ...

1978 - 1982

Iron Horses Series

Row-Crop tractor

Series:

Series:	4640 ←	4840
		4850 ↓

Transmission

Transmission
Transmission:	John Deere PowerShift
Type:	full power shift
Gears:	8 forward and 4 reverse
Oil capacity:	80 qts 75.7 L
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.

Speeds

Speeds

Capacity

Capacity Fuel:103 gal
389.9 L
Hydraulic system:16.5 gal
62.5 L

Hydraulics

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

Tractor hitch

Tractor hitch Rear Type:III/IIIN
Rear lift:8295 lbs
3762 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:1000 (1.75)

Dimensions & Tires

Dimensions & Tires Wheelbase:118.5 inches
300 cm
Weight:14900 to 18000 pounds
Front tire:11.00-16
Rear tire:18.4-38
Full dimensions and tires ...

1978 - 1982

Iron Horses Series

Row-Crop tractor

Series:

Series:	4640 ←	4840
		4850 ↓

John Deere 4840 Tires

John Deere 4840 Tires
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

Dimensions

Dimensions
Wheelbase:	118.5 inches 300 cm
Length:	177 inches 449 cm
Width:	96 inches 243 cm
	108 inches 274 cm (long axle)
	118 inches 299 cm (long axle)
Height (cab):	117 inches 297 cm
Clearance (front axle):	26 inches 66 cm
Clearance (rear axle):	28 inches 71 cm
Clearance (drawbar):	14.9 inches 37 cm
Rear axle:	Rack-and-pinion: 3.937 by 96 inches 99 by 2438 mm
Rear axle:	Rack-and-pinion: 3.937 by 108 inches 99 by 2743 mm
Rear axle:	Rack-and-pinion: 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

John Deere 4840 Weight

John Deere 4840 Weight
Shipping:	14,900 lbs 6758 kg
Operating:	18,000 lbs 8164 kg
Ballasted:	20,370 lbs 9239 kg

4840 Serial Numbers

4840 Serial Numbers Location:Serial number plate on the rear of the 4840, above the PTO shaft.
photo of 4840 serial number
1978:1000
1979:4233
1980:7539
1981:11042
1982:14933

how to read serial numbers...