John Deere 4520
Type: Row-crop Tractors
Contents:
Production | |
| Manufacturer: | John Deere |
| Type: | Row-Crop tractor |
| Factory: | Waterloo, Iowa, USA |
| Total built: | 7,894 |
| 1,666 (Powershift) | |
| 6,228 (Synchro range) | |
| Original price: | $11,600 (1972 ) |
| The 4520 was the first Deere tractor with a factory-installed turbocharger. Early versions suffered serious problems with the air cleaner and fuel injectors. | |
John Deere 4520 Power | |
| Drawbar (claimed): | 107 hp 79.8 kW |
| PTO (claimed): | 120 hp 89.5 kW |
| Drawbar (tested): | 111.21 hp 82.9 kW |
| PTO (tested): | 123.39 hp 92.0 kW |
Mechanical | |
| Chassis: | 4x2 2WD |
| 4x4 HFWD 4WD | |
| Differential lock: | hydraulic rear |
| Steering: | power |
| Brakes: | differential hydraulic wet disc |
| Cab: | Open operator station. Optional Roll-Gard ROPS. Optional cab with heater. |
| Transmissions: | 8-speed partially synchronized |
| 8-speed full power shift | |
Capacity | |
| Fuel: | 50 gal 189.3 L |
| Hydraulic system: | 16 gal 60.6 L (PowerShift) |
| 18 gal 68.1 L (SyncroRange) | |
Hydraulics | |
| Type: | closed center |
| Capacity: | 16 gal 60.6 L (PowerShift) |
| 18 gal 68.1 L (SyncroRange) | |
| Pressure: | 2250 psi 155.1 bar |
| Valves: | 1 to 3 |
Tractor hitch | |
| Rear Type: | III/II |
Power Take-off (PTO) | |
| Rear PTO: | independent |
| Clutch: | dry disc (SyncroRange) |
| wet disc (PowerShift) | |
| Rear RPM: | 1000 |
4520 Serial Numbers | |
| 1969: | 1000 |
| 1970: | 7055 |
| Final: | 8977 |
Electrical | |
| Ground: | negative |
| Charging system: | alternator |
| Charging amps: | 55 |
| 72 (with A/C) | |
| Batteries: | 2 |
| Battery volts: | 6 |
| Battery AH: | 172 |
Engine Detail | |
| John Deere | |
| turbocharged diesel | |
| 6-cylinder | |
| liquid-cooled inline | |
| Displacement: | 404 ci 6.6 L |
| Bore/Stroke: | 4.25x4.75 inches 108 x 121 mm |
| Air cleaner: | dry |
| Pre-heating: | ether injection |
| crankcase heater*Optional | |
| coolant heater*Optional | |
| Compression: | 16.4:1 |
| Rated RPM: | 2200 |
| Idle RPM: | 800-2200 |
| Operating RPM: | 1500-2200 |
| Firing order: | 1-5-3-6-2-4 |
| Starter volts: | 12 |
| Coolant capacity: | 28 qts 26.5 L |
| Intake valve clearance: | 0.018 inches 0.457 mm |
| Exhaust valve clearance: | 0.022 inches 0.559 mm |
Dimensions | |
| Wheelbase: | 106.5 inches 270 cm |
| Length: | 170.75 inches 433 cm |
| Width: | 95.9 inches 243 cm |
| Height: | 106 inches 269 cm |
| Height (steering wheel): | 87 inches 220 cm |
| Clearance (front axle): | 23.8 inches 60 cm |
| Clearance (rear axle): | 31.1 inches 78 cm |
| Clearance (drawbar): | 17.8 inches 45 cm |
| Rear axle: | 95.8 inch length 2433 mm |
| Rear axle: | 108 inch length 2743 mm |
| Rear axle: | 118 inch length 2997 mm |
| Front tread: | 57.5 to 83.25 inches 146 to 211 cm |
| Rear tread: | 63 to 107.5 inches 160 to 273 cm |
