Technical specification of agricultural tractor John Deere 840/940/1040/1140 :
| Model | John Deere 840 | John Deere 940 | John Deere 1040 | John Deere 1140 |
| Years of production | 80-86 | 80-86 | 80-81 | 80-81 |
| Engine model / type | 3179 | 3179 | 3179DL01 | 3179DL01 |
| Number of cylinders / turbocharging | 3 | 3 | 3 | 3 |
| Engine displacement (cm3) | 2940 | 2940 | 2940 | 2940 |
| Piston dimension / stroke (mm) | 106,5×110 | 106,5×110 | 106,5×110 | 106,5×110 |
| Maximum engine power (hp) / rpm | 35/2400 | 44/2400 | 50/2500 | 56/2500 |
| Torque (Nm) / rpm | 135/1300 | 154/1300 | 172/1400 | 185/1400 |
| Number of gears (front + rear) | 8+4 | 8+4 | 8+4/16+8 | 8+4/16+8 |
| Number of synchronized gears (front+rear) | 8+4 | 8+4 | >8+4/16+8 | >8+4/16+8 |
| Speed-Shift | – | – | – | – |
| Type of reverse | – | – | – | – |
| Driving speed (km/h) | 2,0-23,5 | 2,0-23,5 | 3,4-31,5 | 3,4-31,5 |
| Max Driving speed (km/h) | 25 | 25 | – | – |
| Hydraulic pump capacity (L/min) | 23 | 23 | 47 | 47 |
| 3-Point Hitch control | mech | mech | mech | mech |
| 3-point hitch max load (kg) | 2215 | 2215 | 2350 | 2350 |
| PTO speed (rpm) | 540 | 540 | 540 | 540 |
| Disc brake type (dry / wet) | – | – | – | – |
| Type of control of the braking system | – | – | – | – |
| Turning radius 2WD (m) | 6,2 | 6,2 | 6,6 | 6,6 |
| Turning radius 4WD (m) | 9 | 9 | 8,2 | 8,2 |
| Front wheel 2WD | 6,50-16 | 6,50-16 | 7,50-16 | 7,50-16 |
| Front wheel 4WD | 9,50-24 | 11,2-24 | 9,50-24 | 11,2-24 |
| Rear wheel 2WD | 12,4-28 | 12,4-32 | 12,4-36 | 13,6-36 |
| Rear wheel 4WD | 12,4-36 | 13,6-36 | 12,4-36 | 13,6-36 |
| 2WD total weight (kg) | 2270 | 2270 | 2890 | 2940 |
| 4WD total weight (kg) | 3160 | 3210 | 3160 | 3070 |
| Total height with cabin (cm) | 239 | 239 | 244 | 245 |
| Total length (cm) | 351 | 351 | 351/364 | 351/364 |
| Total width (cm) | 189 | 189 | 205 | 205/206 |
| Fuel tank capacity (l) | 78 | 78 | 78 | 78 |
| Cabin sound level (dB) | 90 | 84,5 | 84,5 | 84,5 |
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John Deere is a major American manufacturer of agricultural machinery. The first machine produced in 1836 was a plow that made tillage easier. In 1868, the company was incorporated as Deere & Company and in 1958 as John Deere-Delaware Company. John Deere machines are considered reliable, and as a result, are extremely popular.
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