John Deere 7520 (1972-1975) tractor review and specs

The John Deere 7520 is a 2WD four-wheel drive tractor manufactured by John Deere in Waterloo, Iowa, USA from 1972 to 1975. The JD 7520 is equipped with a 8.7 L (531.0 cu·in) six-cylinder diesel engine and one of two transmissions: a partially synchronized transmission with 8 forward and 2 reverse gears or a partially synchronized transmission with 16 forward and 4 reverse gears.

The JD 7520 four-wheel drive used the John Deere engine. It is a 8.7 L, 8,701 cm², (531.0 cu·in) six-cylinder turbocharged intercooled diesel engine with 121.0 mm (4.76 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 15.4:1. This engine produced 177.5 PS (130.5 kW; 175 HP) at 2,100 rpm of output power.

The John Deere 7520 is equipped with hydrostatic power steering, integral hydraulic wet disc brakes, cab, and 590.5 liters (156 US gal.; 129.9 Imp. gal) fuel tank.

John Deere 7520 Specifications

General Specifications
Model	John Deere 7520
Length	5,580 mm (219.7 in)
Width	2,430 mm (95.7 in)
Height	3,120 mm (122.8 in)
Wheel base	3,040 mm (119.7 in)
Weight (shipping)	7,615 kg (16,800 lbs)
Fuel tank capacity	590.5 liters (156 US gal.; 129.9 Imp. gal)
Battery	Two 6V, 204 Ah
Cabin type	Cab
Engine
Engine model	John Deere
Engine type	Four-stroke, liquid-cooled, inline
Cylinders	6
Fuel type	Diesel
Displacement	8.7 L, 8,701 cm², (531.0 cu·in)
Bore and stroke	121.0 mm X 127.0 mm (4.76 in X 5 in)
Compression ratio	15.4:1
Horsepower	177.5 PS (130.5 kW; 175.0 HP) at 2,100 rpm
Starter	Electric
Oil capacity:	24.6 L (26 US. qt, 21.6 Imp. qt.)
Coolant capacity:	37.9 L (40 US. qt, 33.3 Imp. qt.)

Transmission and chassis
Chassis	4×4 articulated 4WD
Steering type	Hydrostatic power
Brakes	Integral hydraulic wet disc
Transmission model	Syncro-Range
Transmission type	Partially synchronized
Gears	8 forward and 2 reverse
Speed	Forward: 31.3 kmh (19.5 mph) Reverse: 11.0 kmh (6.8 mph)
Transmission oil capacity	71.9 L (19 US. gal, 15.8 Imp. gal.)
Transmission model	Syncro-Range Hi-Lo
Transmission type	Partially synchronized
Gears	16 forward and 4 reverse
Speed	Forward: 36.0 kmh (22.4 mph) Reverse: 12.6 kmh (7.8 mph)
Transmission oil capacity	71.9 L (19 US. gal, 15.8 Imp. gal.)
Tires
Front tires	Ag: 18.4-34, 23.1-30
Rear tires	Ag: 18.4-34, 23.1-30

PTO (Power take-off shaft)
Rear PTO type	Transmission
Rear PTO speed	1,000 rpm
Hydraulic system
Hydraulic type	Closed center
Hydraulic capacity	71.9 L (19 US. gal, 15.8 Imp. gal.)
Pressure	2250 psi (155.1 bar)
Pump flow	21.0 gpm (79.5 lpm)

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