John Deere 4520 VS David Brown 780 specs comparison

John Deere 4520

General Infos

Make	John Deere
Model	4520
Country	United states
Production	From 1969  Until 1970
Price	-
Tractor type	Row Crop tractor
Fuel	diesel
Service repair manual	John Deere 4520 Manual

Dimensions, sizes and tires

AG front tires	9.50-20
AG rear tires	18.4-38
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	15,000 lbs or 6804 kg
Length	170.75 inches [433 cm]
Width	95.9 inches [243 cm]
Height	106 inches [269 cm]
Wheelbase	106.5 inches [270 cm]
Ground clearance	-
Turning radius	12.6 feet [3.8 m]
Rear tread size	63 to 107.5 inches
Front tread size	57.5 to 83.25 inches
Turning radius	-

Horsepower and engin specs

Engine capacity	404 ci or 6.6 L
Cylinders	6 cylinders
Engine power	-
Engine RPM	2200 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	50 gal or 189.3 L
Oil capacity	14 qts or 13.2 L
Oil change	100 h
Starter motor	-
Starter volts	12 V
Parts And Accessories	John Deere 4520 Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	6 V
Battries Amps	172 amps
Cold Amps	-
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	55 amps

Clutch and gearbox specs

Trans system	John Deere Power Shift
Trans type	full power shift
Trans gears	8 forward and 4 reverse
Clutch system	wet disc

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	-
Steering	power
Braking system	differential hydraulic wet disc
Cabin type	Open operator station
Differentiel lock	hydraulic rear

Hydraulics specifications

System	closed center
Valves	1 to 3
Pump flow	-
SVC flow	-
Steering flow	-
Tank capacity	16 gal or 60.6 L
Hydraulic pressure	2250 psi or 155.1 bar
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	107 hp or 79.8 kW
Drawbar horsepower	111.21 hp or 82.9 kW
Fuel consumption	8.2 gal/hour or 31.0 l/hour
Pulling power	13,221 lbs or 5997 kg

Power take-off (PTO) specs

Claimed power	120 hp or 89.5 kW
Real power	115.22 hp or 85.9 kW
Engine @RPM	-
PTO Clutch	dry disc
Rear PTO	independent
Rear PTO RPM	1000 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	7.2 gal/hour or 27.3 l/hour

3 point hitch specifiations

Hitch system	-
Rear hitch	III/II
Rear hitch lift	-
Front hitch	-
Front hitch lift	-

David Brown 780

General Infos

Make	David Brown
Model	780
Country	United states
Production	From 1967  Until 1971
Price	-
Tractor type	-
Fuel	diesel
Service repair manual	David Brown 780 Manual

Dimensions, sizes and tires

AG front tires	6.00-16
AG rear tires	12.4/11-28
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	3,470 lbs or 1573 kg
Length	111.75 inches [283 cm]
Width	64 inches [162 cm]
Height	82.5 inches [209 cm]
Wheelbase	75.8 inches [192 cm]
Ground clearance	11.75 inches [29 cm]
Turning radius	-
Rear tread size	-
Front tread size	-
Turning radius	-

Horsepower and engin specs

Engine capacity	164.4 ci or 2.7 L
Cylinders	3 cylinders
Engine power	46 hp or 34.3 kW
Engine RPM	2200 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	9.5 gal or 36.0 L
Oil capacity	6.5 qts or 6.2 L
Oil change	-
Starter motor	-
Starter volts	-
Parts And Accessories	David Brown 780 Parts

Electrical and battery specs

Batteries number	-
Batteries voltage	-
Battries Amps	-
Cold Amps	-
Ground force	negative
Charging system	-
Charging Volts	-
Charging Amps	-

Clutch and gearbox specs

Trans system	sliding gear
Trans type	-
Trans gears	6 forward and 2 reverse
Clutch system	dry disc

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	-
Steering	manual
Braking system	mechanical drum
Cabin type	-
Differentiel lock	-

Hydraulics specifications

System	-
Valves	-
Pump flow	7.4 gpm or 28.0 lpm
SVC flow	-
Steering flow	-
Tank capacity	-
Hydraulic pressure	2000 psi or 137.9 bar
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	38.9 hp or 29.0 kW
Drawbar horsepower	-
Fuel consumption	-
Pulling power	-

Power take-off (PTO) specs

Claimed power	42.9 hp or 32.0 kW
Real power	-
Engine @RPM	540@1828 (rpm)
PTO Clutch	-
Rear PTO	live
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	-

3 point hitch specifiations

Hitch system	-
Rear hitch	I
Rear hitch lift	1600 lbs or 725 kg
Front hitch	-
Front hitch lift	-

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