The Allis Chalmers 7040 is a 2WD row-crop tractor manufactured by Allis Chalmers in West Allis, Wisconsin, USA from 1975 to 1977. The Allis Chalmers 7040 is equipped with a 7.0 L (426.0 cu·in) six-cylinder diesel engine and one of two transmissions: a partial power shift transmission with 20 forward and 4 reverse gears or a partial power shift transmission with 12 forward and 2 reverse gears.
The Allis Chalmers 7040 row-crop tractor used the Allis Chalmers 3500 Mark II engine. It is a 7.0 L, 6,980 cm2, (426.0 cu·in) six-cylinder turbocharged diesel engine with 108.0 mm (4.25 in) of the cylinder bore and 127.0 mm (5 in) of the piston stroke. The compression ratio rating is 16.0:1. This engine produced 153.1 PS (112.6 kW; 151.0 HP) at 2,300 rpm of output power.
The Allis Chalmers 7040 is equipped with hydrostatic power steering, differential hydraulic wet discs brakes, Acousta-Cab, and 193.0 liters (51 US gal.; 42.5 Imp. gal) fuel tank.
Allis Chalmers 7040 Specifications
| General Specifications | |
| Model | Allis Chalmers 7040 |
| Length | 4,400 mm (173.2 in) |
| Width | 2,420 mm (95.3 in) |
| Height (exhaust) | 2,940 mm (115.7 in) |
| Wheel base | 2,690 mm (105.9 in) |
| Weight | 5,310 kg (11,707 lbs) |
| Fuel tank capacity | 193.0 liters (51 US gal.; 42.5 Imp. gal) |
| Battery | 12V |
| Cabin type | Acousta-Cab |
| Engine | |
| Engine model | Allis Chalmers 3500 Mark II |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 7.0 L, 6,980 cm2, (426.0 cu·in) |
| Bore and stroke | 108.0 mm X 127.0 mm (4.25 in X 5 in) |
| Compression ratio | 16.0:1 |
| Horsepower | 153.1 PS (112.6 kW; 151.0 HP) at 2,300 rpm |
| Starter | Electric |
| Oil capacity: | 18.0 L (19 US. qt, 15.8 Imp. qt.) |
| Coolant capacity: | 29.3 L (31 US. qt, 25.8 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Hydrostatic power |
| Brakes | Differential hydraulic wet discs |
| Differential lock | Power (standard) |
| Transmission model | Power Director |
| Transmission type | Partial power shift |
| Gears | 20 forward and 4 reverse |
| Speed | Forward: 30.2 kmh (18.8 mph) Reverse: 13.5 (8.4 mph) |
| Transmission model | Power Shift |
| Transmission type | Partial power shift |
| Gears | 12 forward and 2 reverse |
| Speed | Forward: 29.6 kmh (18.4 mph) Reverse: 12.9 (8 mph) |
| Tires | |
| Front tires | Ag: 11.00-16 |
| Rear tires | Ag: 18.4-38 |
| Three-Point Hitch | |
| Caterogy | III/II |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 540/1,000 or 1,000 rpm (optional) |
| Hydraulic system | |
| Hydraulic type | Closed center |
| Hydraulic capacity | 91.2 liters (24.1 US gal, 20.1 Imp. gal) |
| Valves | 2 or 3 |
| Pump flow | 22.0 gpm (83.3 lpm) |
| Total flow | 45.0 gpm (170.3 lpm) |
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