Allis Chalmers 7040

Name: Allis Chalmers 7040
Brand: Allis Chalmers

Power

151 hp[P] hp

Production

1975-1977

Engine

Turbocharged diesel, 6-cylinder

Transmission

Power Director

Weight

11,700 lbs [5307 kg]

Drive

2WD

140–200 HP 1970s

From the same series:

Introduction

Allis Chalmers 7040 Row-Crop Tractor

The Allis Chalmers 7040 is a row-crop tractor produced between 1975 and 1977 at the manufacturer's facility in West Allis, Wisconsin. Designed for large-scale agricultural operations, this model occupies the 151 horsepower category within the Allis Chalmers lineup.

Engine and Performance

The tractor is powered by the Allis Chalmers 3500 Mark II, a 7.0-liter, 6-cylinder turbocharged diesel engine. It operates at a rated speed of 2300 RPM with a compression ratio of 16:1. The engine cooling system features a 29.3-liter capacity, with an optional coolant heater available for cold-weather operations.

Transmission and Drivetrain

The 7040 offers two partial power shift transmission configurations: a 20-speed forward and 4-reverse option, or a 12-speed forward and 2-reverse setup. Both systems utilize a combination of floor-mounted gear selectors and side-console range levers, with foot-operated controls for power shifting. Steering is managed via a hydrostatic power system, paired with differential hydraulic wet disc brakes.

Hydraulics and PTO

The hydraulic system is a closed-center design providing a total flow of 170.3 liters per minute, with a dedicated pump flow of 83.3 liters per minute. It includes two or three valve outlets for implement control. The rear independent power take-off (PTO) offers standard 540 and 1000 RPM speeds, with an optional 1000 RPM configuration available.

Operator Environment and Dimensions

The unit features the Acousta cab as standard, which includes heating, with air-conditioning and audio equipment offered as options. With an operating weight of 5,307 kg and a wheelbase of 269 cm, the machine provides stability for field work. Various rear tread widths ranging from 162 to 231 cm allow for adaptation to different row-crop configurations.

Conclusion

"The Allis Chalmers 7040 is a heavy-duty row-crop tractor intended for primary tillage and large-scale field applications. Its combination of high-capacity hydraulics, partial power shift transmissions, and robust 6-cylinder power makes it suitable for demanding agricultural environments requiring sustained performance."

Introduction

Production Information of Allis Chalmers, 7040

The production information of the tractor (7040) includes details about its manufacturing.

Row-Crop tractor

Built in West Allis, Wisconsin, USA


Manufacturer	Allis Chalmers
Original price	$24,550

Dimension and Tires Information of Allis Chalmers, 7040

This section sums up the dimension and tires information of the tractor.


Clearance (front axle)	22.4 inches [56 cm]
Wheelbase	106 inches [269 cm]
Operating weight	11,700 lbs [5307 kg]
	119.5 inches (long axle) [303 cm]
Length	173.6 inches [440 cm]
Clearance (rear axle)	28 inches [71 cm]
Ballasted weight	17,380 lbs [7883 kg]
Width	95.5 inches [242 cm]
Rear tread	64 to 91 inches [162 to 231 cm]
Front tread	62 to 88 inches [157 to 223 cm]


	24.5-32
Ag front	11.00-16
Ag rear	20.8-38
	14L-16.1
Ag rear	18.4-38
	30.5-32
	23.1-34
Ag front	10.00-16
	16.9-38
	15.5-38

Engine Specifications of Allis Chalmers, 7040

Get the specifications for the engine and if different options are available.

Allis Chalmers 3500 Mark II

Liquid-cooled

Turbocharged diesel

6-cylinder


Starter volts	12
Displacement	426 ci [7.0 L]
	Coolant heater (optional)
Bore/Stroke	4.25x5.00 inches [108 x 127 mm]
Coolant capacity	31 qts [29.3 L]
Oil capacity	19 qts [18.0 L]
Rated RPM	2300
Compression	16:1
Pre-heating	Ether

Transmission Information of Allis Chalmers, 7040Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1

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.


Transmission	Power Director
Type	Partial power shift
Gears	20 forward and 4 reverse

Transmission variants 2

Six gears in two ranges (slow/fast). Clutchless power shift between gears.


Transmission	Power Shift
Type	Partial power shift
Gears	12 forward and 2 reverse

20-speed partial power shift

12-speed partial power shift

Mechanical Specs of Allis Chalmers, 7040Y

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Acousta cab standard with heater, air-conditioning optional. Optional radio and 8-track tape player. Four-post ROPS canopy optional.

Differential hydraulic wet disc brakes


Differential lock	Power standard
Steering	Hydrostatic power

Power Information of Allis Chalmers, 7040Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Independent
Rear PTO Type	540/1000
	1000 (optional)

Hydraulics Specifications of Allis Chalmers, 7040

Hydraulic system type, pressure, pump flow and valves.


Type	Closed center
Total flow	45 gpm [170.3 lpm]
Pump flow	22 gpm [83.3 lpm]
Capacity	24.1 gal [91.2 L]
Valves	2 or 3

Three-Point Hitch of Allis Chalmers, 7040

Hitch category and rear/front lift capacity.


Rear Type	III/II

Electrical System of Allis Chalmers, 7040

Battery voltage, charging system and ground.


Charging system	Alternator
Battery volts	12

Frequently asked questions

How much horsepower does the Allis Chalmers 7040 have?

The Allis Chalmers 7040 delivers 151 hp[P] HP.

What years was the Allis Chalmers 7040 produced?

The Allis Chalmers 7040 was produced in 1975-1977.

What engine does the Allis Chalmers 7040 have?

The Allis Chalmers 7040 is powered by a Turbocharged diesel, 6-cylinder engine.

What transmission does the Allis Chalmers 7040 use?

The Allis Chalmers 7040 uses a Power Director transmission.

How much does the Allis Chalmers 7040 weigh?

The Allis Chalmers 7040 weighs 11,700 lbs [5307 kg].

Is the Allis Chalmers 7040 4WD?

The Allis Chalmers 7040 is available in 2WD.

More Allis Chalmers models

220150 HP · 1970 - 1973 8030148 HP · 1982 - 1985 7020146 HP · 1978 - 1981 7030145 HP · 1973 - 1974 HD19143 HP · 1947 - 1950 HD14161 HP · 1939 - 1947 HD16A163 HP · 1955 - 1970 210135 HP · 1970 - 1973

View all 94 Allis Chalmers models →

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