JD 4620 Engine Technical Data
Engine Model …………. John Deere
Engine Type …………. 4 Cycle, six-cylinder, turbocharged
intercooled diesel
Number of Cylinders …………. 6
Displacement, cu in (L) …………. 404 (6.61)
Engine Bore, in (mm) …………. 4.25 (108.0)
Engine Stroke, in (mm) …………. 4.75 (121.0)
Aspiration …………. Turbocharged
Rated Engine Power, hp (kW) …………. 150.0 (111.2)
Rated Engine Speed, rpm …………. 2200
Idle Speed, rpm …………. 800-2200
Compression …………. 16.4:1
Firing Order …………. 1-5-3-6-2-4
Fuel Tank Capacity, gal (L) …………. 50.0 (189.3)
Oil Capacity, qts (L) …………. 16.0 (15.1)
Coolant Capacity, qts (L) …………. 28.0 (26.5)
Electrical System Rating, Volts …………. 12
Charging System …………. Alternator
Battery Rating, Volts …………. 2x6V
Power Take-Off
PTO Operational Type …………. Independent
PTO Horsepower, hp (kW) …………. 135.0 (100.7)
PTO Speed, rpm …………. 1000
PTO/Engine Speed, rpm …………. 1000/1900
John Deere 4620 Transmission
Transmission Type …………. Syncro Range
Gearbox Type …………. 8F/2R, Partially synchronized
Number of Forward Gears …………. 8
Number of Reverse Gears …………. 2
Clutch …………. Dry disc
Clutch Disc Diameter, in (mm) …………. 14.8 (373)
Oil Capacity, qts (L) …………. 64.0 (60.6)
Maximum Forward Speed, mph (kph) …………. 18.3 (29.4)
Maximum Reverse Speed, mph (kph) …………. 5.6 (8.9)
Transmission Type …………. Power Shift
Gearbox Type …………. 8F/4R, Full powershift
Number of Forward Gears …………. 8
Number of Reverse Gears …………. 4
Clutch Type …………. Hydraulic wet discs
Oil Capacity (2WD), qts (L) …………. 72.0 (68.1)
Maximum Forward Speed, mph (kph) …………. 18.5 (29.7)
Maximum Reverse Speed, mph (kph) …………. 5.3 (8.5)
JD 4620 Wheels and Tires
Drive Wheels …………. 2WD/4WD
Steering Configuration …………. Front steer
Steering System …………. Hydrostatic power
Brakes Type …………. Hydraulic wet disc
Front Tire Size (Std) …………. 11.0-16
Rear Tire Size (Std) …………. 20.8-38
Front Tire Size (Opt) …………. 14.9-24
Rear Tire Size (Opt) …………. 24.5-32
Rear Tire Size (Duals) …………. 12.4-42
Front Tread Width, in (mm) …………. 56-88 (1420-2230)
Rear Tread Width, in (mm) …………. 60-130 (1520-3300)
Hydraulics and Hitch
Hydraulic System Type …………. Closed center
Implement Pump Flow, gpm (Lpm) …………. 22.0 (83.3)
Hydraulic Pressure, Bar (psi) …………. 155 (2250)
Hydraulic Capacity (Syncro-Range), gal (L) …………. 16.0 (60.5)
Hydraulic Capacity (Power Shift), gal (L) …………. 18.0 (68.1)
Number of Standard Remote Valves …………. 1/2
3-Point Hitch Category …………. 3
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)
John Deere 4620 Dimensions and Weight
Wheelbase, in (mm) …………. 106.5 (2700)
Length, in (mm) …………. 170.7 (4330)
Height (Cab), in (mm) …………. 106 (2690)
Height (Steering Wheel), in (mm) …………. 87 (2200)
Overall Width, in (mm) …………. 95.8 (2430)
Ground Clearance, in (mm) …………. 17.8 (450)
Front Axle Clearance, in (mm) …………. 23.8 (600)
Shipping Weight, lb (kg) …………. 12980 (5890)
Operating Weight, lb (kg) …………. 14930 (6770)
Ballasted Weight, lb (kg) …………. 18640 (8455)