Allis Chalmers 7040 - Horsepower, Weight, Specs, Problems, Price & More
The Allis Chalmers 7040 tractor is powered by a Allis Chalmers 7.0L 6-cyl diesel engine. It has a 4x2 2WD drive configuration and a 20-speed partial power shift/12-speed partial power shift transmission.
Engine
The engine is a 6-cylinder liquid-cooled Allis Chalmers 3500 Mark II turbocharged diesel with a displacement of 426ci / 7.0L and a bore/stroke of 4.25x5.00inches / 108x 127 mm. It has a compression ratio of 16:1 and is rated at 2300 RPM. The engine has a starter voltage of 12 and an oil capacity of 19qts / 18.0L, with a coolant capacity of 31qts / 29.3L. Pre-heating is available through an ether/coolant heater (optional).
Transmission
The transmission has a drawbar (claimed) power of 117hp / 87.2kW and a PTO (claimed) power of 136hp / 101.4kW. The drawbar (tested) power is 114.34hp / 85.3kW, while the PTO (tested) power is 136.49hp / 101.8kW. The tractor has a 20-speed partial power shift/12-speed partial power shift transmission.
Brakes
The brakes are differential hydraulic wet disc.
Steering
The steering is hydrostatic power and is described as an Allis Chalmers 7.0L 6-cylinder diesel.
Common Problems
Users have reported issues with the Allis Chalmers 7040's hydraulic system, particularly with the hydraulic pump and the lift arms. Some users have also reported issues with the transmission, specifically with the gears slipping or not engaging properly. Another common issue is with the fuel system, with some users reporting problems with the fuel pump and injectors. Electrical issues have also been reported, such as problems with the starter and alternator. Finally, some users have reported issues with the cab, particularly with the air conditioning system.
What Users Like
Users appreciate the Allis Chalmers 7040's powerful engine and its ability to handle heavy loads. The tractor's hydrostatic power steering is also a popular feature, as it makes the tractor easy to maneuver. Users also appreciate the tractor's comfortable cab, which comes standard with a heater and can be equipped with air conditioning. Finally, users like the tractor's differential lock, which provides extra traction in difficult terrain.
Allis Chalmers 7040 Technical Specifications
Power | |
|---|---|
| Drawbar (claimed) | 117hp / 87.2kW |
| Pto (claimed) | 136hp / 101.4kW |
| Drawbar (tested) | 114.34hp / 85.3kW |
| Pto (tested) | 136.49hp / 101.8kW |
Engine Detail | |
| Description | Allis Chalmers 3500 Mark II turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 426ci / 7.0L |
| Bore/stroke | 4.25x5.00inches / 108x 127 mm |
| Pre-heating | ether/coolant heater (optional) |
| Compression | 16:1 |
| Rated Rpm | 2300 |
| Starter Volts | 12 |
| Oil Capacity | 19qts / 18.0L |
| Coolant Capacity | 31qts / 29.3L |
Engine | |
| Description | Allis Chalmers 7.0L 6-cyl diesel |
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. |
| Transmissions | 20-speed partial power shift/12-speed partial power shift |
Tires | |
| Ag Front | 10.00-16 |
| Ag Rear | 20.8-38/23.1-34/24.5-32/30.5-32/15.5-38/16.9-38 |
Dimensions | |
| Wheelbase | 106inches / 269cm |
| Length | 173.6inches / 440cm |
| Width | 95.5inches / 242cm/119.5inches / 303cm (long axle) |
| Operating Weight | 11,700lbs / 5307kg |
| Ballasted Weight | 17,380lbs / 7883kg |
| Clearance (front Axle) | 22.4inches / 56cm |
| Clearance (rear Axle) | 28inches / 71cm |
| Front Tread | 62 to 88inches / 157to 223 cm |
| Rear Tread | 64 to 91inches / 162to 231 cm |
Dimensions And Tires | |
| Wheelbase | 106inches / 269cm |
| Weight | 11,700lbs / 5307kg |
| Front Tire | 11.00-16 |
| Rear Tire | 18.4-38 |
Serial Numbers | |
| Location | Above PTO shield |
| 1975 | 1303 |
| 1976 | 4089 |
| 1977 | 6839 |
Capacity | |
| Fuel | 51gal / 193.0L/13gal / 49.2L (optional tank) |
| Hydraulic System | 24.1gal / 91.2L |
Hydraulics | |
| Type | closed center |
| Capacity | 24.1gal / 91.2L |
| Valves | 2 or 3 |
| Pump Flow | 22gpm / 83.3lpm |
| Total Flow | 45gpm / 170.3lpm |
Tractor Hitch | |
| Rear Type | III/II |
Electrical | |
| Charging System | alternator |
| Battery Volts | 12 |
Power Take Off Pto | |
| Rear Pto | independent |
| Rear Rpm | 540/1000/1000 (optional) |
Height | |
| Steering Wheel | 87inches / 220cm |
| Hood | 68inches / 172cm |
| Exhaust | 116inches / 294cm |