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John Deere 4840

John Deere 4840 tractor
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The John Deere 4840 is a row-crop tractor produced from 1978 to 1982 as part of the Iron Horses Series. Built in Waterloo, Iowa, USA, it features a turbocharged intercooled 7.6L 6-cylinder diesel engine delivering up to 180 hp PTO power. The tractor includes an 8-speed full power shift transmission, two-wheel drive, differential lock, power steering, and a Sound-Gard cab. It has a fuel capacity of 103 gallons and a hydraulic system capacity of 16.5 gallons. Dimensions include a 118.5 inch wheelbase, 177 inch length, and operating weight up to 18,000 lbs. The 4840 supports a rear hitch lift capacity of 8295 lbs and an independent 1000 RPM rear PTO. It was originally priced at $57,648 in 1982.
John Deere 4840tractorspecificationsenginetransmissionpowerdimensionshydraulicsfarm tractor
Power200 hp[P]
Founded1978 - 1982
Model4840

Technical Specifications

Detailed specifications and technical data for John Deere 4840

Power

PTO (tested):180.63 hp (134.7 kW)
PTO (claimed):180 hp (134.2 kW)
Drawbar (tested):151.21 hp (112.8 kW)
Drawbar (claimed):157 hp (117.1 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:turbocharged intercooled diesel
Cooling:liquid-cooled
Idle RPM:800-2400
Cylinders:6-cylinder
Rated RPM:2200
Air cleaner:dual paper elements
Bore/Stroke:4.5625x4.75 inches (116 x 121 mm)
Pre-heating:ether injection
Displacement:466 ci (7.6 L)
Firing order:1-5-3-6-2-4
Manufacturer:John Deere
Operating RPM:1500-2200
Starter volts:12
Coolant capacity:40 qts (37.9 L)
Compression ratio:15.5:1

Weight

Shipping:14,900 lbs (6758 kg)
Ballasted:20,370 lbs (9239 kg)
Operating:18,000 lbs (8164 kg)

Capacity

Fuel:103 gal (389.9 L)
Hydraulic system:16.5 gal (62.5 L)

Dimensions

Width:96 inches (243 cm)
Length:177 inches (449 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)
Clearance (drawbar):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)
Width (long axle options):108 inches (274 cm), 118 inches (299 cm)

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
Drive:Two-wheel drive
Brakes:Differential hydraulic wet disc brakes
Power steering:Yes
Differential lock:pedal-actuated hydraulic

Production

Type:Row-Crop tractor
Series:Iron Horses Series
Built in:Waterloo, Iowa, USA
Original price:$57,648 in 1982
Years produced:1978 - 1982

Transmission

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

Tractor hitch

Rear Type:III/IIIN
Rear lift capacity:8295 lbs (3762 kg)

Power Take-off (PTO)

Rear PTO:independent
Rear PTO Type:1000 (1.75)

Related Models

John Deere 4850

Model:4850

John Deere 4640

Model:4640