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| info | |
| 1975 - 1977 | |
| Previous model: | Allis Chalmers 7030 |
| Next model: | Allis Chalmers 7045 |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | West Allis, Wisconsin, USA |
| Original price (USD): | $24,550 |
| Capacity | |
| Fuel: | 51 gal [193.0 L], 13 gal [49.2 L] (optional tank) |
| Hydraulic system: | 24.1 gal [91.2 L] |
| 3-Point Hitch | |
| Rear Type: | III/II |
| Power Take-off (PTO) | |
| Rear PTO: | independent |
| Rear RPM: | 540/1000, 1000 (optional) |
| Dimensions & Tires | |
| Wheelbase: | 106 inches [269 cm] |
| Weight: | 11700 to 17380 pounds |
| Front tire: | 11.00-16 |
| Rear tire: | 18.4-38 |
| 7040 Serial Numbers | |
| Location: | Above PTO shield |
| Allis Chalmers 7040 Power | |
| Drawbar (claimed): | 117 hp [87.2 kW] |
| PTO (claimed): | 136 hp [101.4 kW] |
| Drawbar (tested): | 114.34 hp [85.3 kW] |
| PTO (tested): | 136.49 hp [101.8 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Differential lock: | power standard |
| Steering: | hydrostatic power |
| Brakes: | differential hydraulic wet disc |
| Cab: | Acousta cab standard with heater, air-conditioning optional. Optional radio and 8-track tape player. Four-post ROPS canopy optional. |
| Hydraulics | |
| Type: | closed center |
| Capacity: | 24.1 gal [91.2 L] |
| Valves: | 2 or 3 |
| Pump flow: | 22 gpm [83.3 lpm] |
| Total flow: | 45 gpm [170.3 lpm] |
| Electrical | |
| Charging system: | alternator |
| Battery | |
| Volts: | 12 |
| info | |
| Bore/Stroke: | 4.25x5.00 inches [108 x 127 mm] |
| Pre-heating: | ether, coolant heater (optional) |
| Compression: | 16:1 |
| Rated RPM: | 2300 |
| Starter volts: | 12 |
| Oil capacity: | 19 qts [18.0 L] |
| Coolant capacity: | 31 qts [29.3 L] |
| Engine Detail | |
| Allis Chalmers 3500 Mark II, turbocharged diesel, 6-cylinder, liquid-cooled, 426 ci [7.0 L] |
| info | |
| Speeds: | With 18.4x38 rear tires. |
| Transmission | |
| Transmission: | Power Director |
| Type: | partial power shift |
| Gears: | 20 forward and 4 reverse |
| Five gears, plus reverse, with two ranges (fast/slow) and high-low power shift. Floor-mounted shifter selects gear, side-console lever selects range. Foot-operated buttons control the Power Director power shift. | |
| info | |
| Previous model: | Allis Chalmers 7030 |
| Next model: | Allis Chalmers 7045 |
| Dimensions | |
| Weight (operating): | 11,700 lbs [5307 kg] |
| Weight (ballasted): | 17,380 lbs [7883 kg] |
| Wheelbase: | 106 inches [269 cm] |
| Length: | 173.6 inches [440 cm] |
| Width: | 95.5 inches [242 cm], 119.5 inches [303 cm] (long axle) |
| Height (steering wheel): | 87 inches [220 cm] |
| Height (hood): | 68 inches [172 cm] |
| Height (exhaust): | 116 inches [294 cm] |
| Clearance (front axle): | 22.4 inches [56 cm] |
| Clearance (rear axle): | 28 inches [71 cm] |
| Front tread: | 62 to 88 inches [157 to 223 cm] |
| Rear tread: | 64 to 91 inches [162 to 231 cm] |
| Allis Chalmers 7040 Tires | |
| Ag front: | 10.00-16, 14L-16.1 |
| Ag rear: | 20.8-38, 23.1-34, 24.5-32, 30.5-32, 15.5-38, 16.9-38 |