The Allis Chalmers 7040 tractor is powered by a Allis Chalmers 7.0L 6-cyl diesel engine that provides of horsepower and torque. 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).


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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.


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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

DescriptionAllis Chalmers 3500 Mark II turbocharged diesel 6-cylinder liquid-cooled
Displacement426ci / 7.0L
Bore/stroke4.25x5.00inches / 108x 127 mm
Pre-heatingether/coolant heater (optional)
Compression16:1
Rated Rpm2300
Starter Volts12
Oil Capacity19qts / 18.0L
Coolant Capacity31qts / 29.3L

Engine

DescriptionAllis Chalmers 7.0L 6-cyl diesel

Mechanical

Chassis4x2 2WD
Differential Lockpower standard
Steeringhydrostatic power
Brakesdifferential hydraulic wet disc
CabAcousta cab standard with heater, air-conditioning optional. Optional radio and 8-track tape player. Four-post ROPS canopy optional.
Transmissions20-speed partial power shift/12-speed partial power shift

Tires

Ag Front10.00-16
Ag Rear20.8-38/23.1-34/24.5-32/30.5-32/15.5-38/16.9-38

Dimensions

Wheelbase106inches / 269cm
Length173.6inches / 440cm
Width95.5inches / 242cm/119.5inches / 303cm (long axle)
Operating Weight11,700lbs / 5307kg
Ballasted Weight17,380lbs / 7883kg
Clearance (front Axle)22.4inches / 56cm
Clearance (rear Axle)28inches / 71cm
Front Tread62 to 88inches / 157to 223 cm
Rear Tread64 to 91inches / 162to 231 cm

Dimensions And Tires

Wheelbase106inches / 269cm
Weight11,700lbs / 5307kg
Front Tire11.00-16
Rear Tire18.4-38

Serial Numbers

LocationAbove PTO shield
19751303
19764089
19776839

Capacity

Fuel51gal / 193.0L/13gal / 49.2L (optional tank)
Hydraulic System24.1gal / 91.2L

Hydraulics

Typeclosed center
Capacity24.1gal / 91.2L
Valves2 or 3
Pump Flow22gpm / 83.3lpm
Total Flow45gpm / 170.3lpm

Tractor Hitch

Rear TypeIII/II

Electrical

Charging Systemalternator
Battery Volts12

Power Take Off Pto

Rear Ptoindependent
Rear Rpm540/1000/1000 (optional)

Height

Steering Wheel87inches / 220cm
Hood68inches / 172cm
Exhaust116inches / 294cm

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Other Allis Chalmers tractors:

Allis Chalmers 10-18, Allis Chalmers 160, Allis Chalmers 170, Allis Chalmers 175, Allis Chalmers 18-30, Allis Chalmers 180, Allis Chalmers 185, Allis Chalmers 190, Allis Chalmers 190XT, Allis Chalmers 20-35, Allis Chalmers 200, Allis Chalmers 210, Allis Chalmers 220, Allis Chalmers 25-40, Allis Chalmers 440, Allis Chalmers 4W-220, Allis Chalmers 4W-305, Allis Chalmers 5020, Allis Chalmers 5030, Allis Chalmers 5040, Allis Chalmers 5045, Allis Chalmers 5050, Allis Chalmers 6-12, Allis Chalmers 6040, Allis Chalmers 6060, Allis Chalmers 6070, Allis Chalmers 6080, Allis Chalmers 6140, Allis Chalmers 616, Allis Chalmers 620, Allis Chalmers 7000, Allis Chalmers 7010, Allis Chalmers 7020, Allis Chalmers 7030, Allis Chalmers 7040, Allis Chalmers 7045, Allis Chalmers 7050, Allis Chalmers 7060, Allis Chalmers 7080, Allis Chalmers 720, Allis Chalmers 7580, Allis Chalmers 8010, Allis Chalmers 8030, Allis Chalmers 8050, Allis Chalmers 8070, Allis Chalmers A, Allis Chalmers B, Allis Chalmers C, Allis Chalmers CA, Allis Chalmers D10, Allis Chalmers D12, Allis Chalmers D14, Allis Chalmers D15, Allis Chalmers D19, Allis Chalmers D270, Allis Chalmers E 30-60, Allis Chalmers FD3, Allis Chalmers FD5, Allis Chalmers G, Allis Chalmers HD11, Allis Chalmers HD16A, Allis Chalmers HD20, Allis Chalmers HD3, Allis Chalmers HD6, Allis Chalmers HD9, Allis Chalmers T16, Allis Chalmers UC, Allis Chalmers WF,