Specifications & Technical Data

John Deere 4840 Specifications

Specifications & technical data for the John Deere 4840 tractor can be found on this page.

The John Deere 4840 is an Iron Horses series 2WD row crop tractor.This tractor was manufactured by John Deere in Waterloo, Iowa, USA from 1978 to 1982. The JD 4840 is equipped with a 7.6L six cylinder diesel engine and a full shift transmission with 8 forward gears and4 backwards.

The John Deere 4840 Row Crop Tractor used the John Deere engine.It is a turbocharged and intercooled six-cylinder diesel engine of 7.6L, 7.636 cm2 (466.0 cu·in), with 116.0 mm (4.57 in) cylinder diameter and 121.0 mm (4.76 in) of piston stroke.This engine produces 202.6 PS (149.0 kW; 200.0 HP) of power output.

The John Deere 4840 is equipped with power steering, differential hydraulic wet disc brakes, a Sound-Gard cab, and a 103 US gallon (85.8 Imp. Gallon) fuel tank.

John Deere 4840 Specifications

JD 4840 Engine Technical Data

Engine Model …………. John Deere 6466
Engine Type …………. 4 Stroke, six-cylinder, direct injection turbocharged intercooled diesel
Number of Cylinders …………. 6
Displacement, cu in (L) …………. 466 (7.64)
Engine Bore, in (mm) …………. 4.56 (116.0)
Engine Stroke, in (mm) …………. 4.75 (121.0)
Aspiration …………. Turbocharged
Rated Engine Power, hp (kW) …………. 200.0 (148.1)
Rated Engine Speed, rpm …………. 2200
Idle Speed, rpm …………. 800-2400
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) …………. 103.0 (390.0)
Oil Capacity, qts (L) …………. 21.0 (19.9)
Coolant Capacity, qts (L) …………. 40.0 (37.5)
Electrical System Rating, Volts …………. 12
Charging System …………. Alternator
Alternator Rating, Amps …………. 90

Power Take-Off

PTO Operational Type …………. Independent
PTO Horsepower, hp (kW) …………. 180.0 (134.0)
PTO Clutch …………. Hydraulic disc
PTO Speed, rpm …………. 1000
PTO/Engine Speed, rpm …………. 1000/2200

John Deere 4840 Transmission

Transmission Type …………. Power Shift
Gearbox Type …………. 8F/4R, Full powershift
Number of Forward Gears …………. 8
Number of Reverse Gears …………. 4
Clutch Type …………. Wet disc
Oil Capacity, qts (L) …………. 80.0 (75.7)
Maximum Forward Speed, mph (kph) …………. 18.6 (29.9)
Maximum Reverse Speed, mph (kph) …………. 6.4 (10.3)

Wheels and Tires

Drive Wheels …………. 2WD 4×2
Steering Configuration …………. Front steer
Steering System …………. Power Steering
Brakes Type …………. Differential hydraulic wet disc
Front Tire Size (Std) …………. 11.0-16
Rear Tire Size (Std) …………. 18.4-38
Front Tire Size (Opt) …………. 16.5L-16.1
Rear Tire Size (Opt) …………. 18.4-42
Front Tread Width, in (mm) …………. 58-100 (1470-2540)
Rear Tread Width, in (mm) …………. 60-131.5 (1520-3340)

JD 4840 Hydraulics and Hitch

Hydraulic System Type …………. Closed center
Implement Pump Flow, gpm (Lpm) …………. 23.0 (87.1)
Hydraulic Pressure, Bar (psi) …………. 157 (2275)
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) …………. 8295 (3760)
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 4840 Dimensions and Weight

Wheelbase, in (mm) …………. 118.5 (3000)
Length, in (mm) …………. 177 (4490)
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) …………. 14900 (6760)
Operating Weight, lb (kg) …………. 18000 (8165)
Ballasted Weight, lb (kg) …………. 20370 (9240)

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