John Deere 3120: all source data
All 59 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | John Deere |
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| (no label) | Row-Crop tractor |
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| (no label) | Built in Mannheim, Baden-Württemberg, Germany |
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Engine| (no label) | John Deere 5.0L 6-cyl diesel |
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| Fuel tank | 28 gal | 106.0 L |
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Transmission| (no label) | 12-speed twos-peed power shift |
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Power| Engine (gross) | 86 hp | 64.1 kW |
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| Engine (net) | 80 hp | 59.7 kW |
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| PTO (claimed) | 70 hp | 52.2 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Final drives | planetary |
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| Differential lock | mechanical rear |
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| (no label) | Power steering |
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| (no label) | Hydraulic wet disc brakes |
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| (no label) | Open operator station. Two-post ROPS available. |
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Hydraulics| Type | closed center |
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| Pressure | 2250 psi | 155.1 bar |
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Dimensions| Wheelbase | 97 inches | 246 cm |
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| Weight | 7717 lbs | 3500 kg |
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| Front tire | 7.50-18 |
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| Rear tire | 16.9/14-34 |
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Electrical| Ground | negative |
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| Battery volts | 12 |
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| Battery AH | 88 |
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Engine
Engine detail| (no label) | John Deere |
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| (no label) | diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 303 ci | 5.0 L |
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| Bore/Stroke | 3.86x4.33 inches | 98 x 110 mm |
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| Power (net) | 80 hp | 59.7 kW |
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| Power (gross) | 86 hp | 64.1 kW |
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| Fuel system | direct injection |
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| Compression | 16.7:1 |
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| Rated RPM | 2200 |
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| Idle RPM | 600-2360 |
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| Torque | 220 lb-ft | 298.3 Nm |
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| Torque RPM | 1450 |
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| Firing order | 1-5-3-6-2-4 |
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| Starter | electric |
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| Starter volts | 12 |
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| Oil capacity | 11 qts | 10.4 L |
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| Coolant capacity (Coolant) | 20 qts | 18.9 L |
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Transmission
Transmission| Type | twos-peed power shift |
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| Gears | 12 forward and 6 reverse |
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| Clutch | dry disc |
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| (no label) | Three synchronized gears in two ranges, plus reverse range, with two-speed high-low shift. Tractor must be stopped, and clutch used, to shift range. |
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Dimensions
Tires| Ag front | 7.50-18 |
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| Ag rear | 16.9/14-34 |
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| Ag front | 7.50-16 |
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| Ag rear | 18.4/15-34 |
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| Ag rear | 15.5-38 |
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Dimensions| Wheelbase | 97 inches | 246 cm |
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| Length | 160 inches | 406 cm |
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| Height (steering wheel) | 65.4 inches | 166 cm |
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| Height (exhaust) | 94.3 inches | 239 cm |
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| Shipping weight | 7717 lbs | 3500 kg |
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