Row Crop tractorsSpec sheet
Allis Chalmers 7040
The Allis Chalmers 7040 is a powerful row crop tractor made from 1975 to 1977. It has a strong 6-cylinder diesel engine that makes 151 horsepower. This engine is turbocharged and has above-average displacement for its class. The tractor runs at a very high 2300 rpm, which means it can work hard all day long. This tractor is built for serious farm work. It has a partial power shift transmission with 20 forward gears and 4 reverse gears, giving farmers lots of options for different tasks. The 7040 uses a three-point hitch at the back, which can handle big implements. It also has a rear PTO that spins at 540 rpm, perfect for running various farm tools. The tractor's closed center hydraulic system helps it lift heavy loads easily. Farmers will appreciate the comfortable Acousta-Cab that keeps noise down while working. The Allis Chalmers 7040 is a big tractor, weighing 11,700 pounds. It's 173.6 inches long, 95.5 inches wide, and 116 inches tall. It has large rear tires (18.4-38) for good traction in the fields. The tractor comes with helpful features like differential lock and a big 51-gallon fuel tank. With its mix of power, comfort, and useful features, the 7040 was a solid choice for farmers in the mid-1970s.
ManufacturerAllis ChalmersPower151 hp(112.6 kW)Class150–300 HP tractors →Engine6-cylinderTransmissionPartial Power Shift
Key specifications
- Category
- Row Crop
- Engine power
- 151hp
- Operating weight
- 11,700 lb
- Transmission
- Partial Power Shift
Category comparison
7040 compared with its category
vs. Row Crop medianDistribution
Engine Power (hp)
All recorded Row Crop tractors
151 hp · 58th
This model
12
Median 138 hp
283
This modelRow Crop tractorsMediann = 1,206
The 7040 ranks at the 58th percentile for engine power among recorded row crop tractors.
Overview
About the Allis Chalmers 7040
The Allis Chalmers 7040 is a powerful row crop tractor made from 1975 to 1977. It has a strong 6-cylinder diesel engine that makes 151 horsepower. This engine is turbocharged and has above-average displacement for its class. The tractor runs at a very high 2300 rpm, which means it can work hard all day long. This tractor is built for serious farm work. It has a partial power shift transmission with 20 forward gears and 4 reverse gears, giving farmers lots of options for different tasks. The 7040 uses a three-point hitch at the back, which can handle big implements. It also has a rear PTO that spins at 540 rpm, perfect for running various farm tools. The tractor's closed center hydraulic system helps it lift heavy loads easily. Farmers will appreciate the comfortable Acousta-Cab that keeps noise down while working. The Allis Chalmers 7040 is a big tractor, weighing 11,700 pounds. It's 173.6 inches long, 95.5 inches wide, and 116 inches tall. It has large rear tires (18.4-38) for good traction in the fields. The tractor comes with helpful features like differential lock and a big 51-gallon fuel tank. With its mix of power, comfort, and useful features, the 7040 was a solid choice for farmers in the mid-1970s.
Full specifications
Recorded specifications
General
| Manufacturer | Allis Chalmers |
|---|---|
| Model | 7040 |
| Category | Row Crop tractor |
| Type | 4x2 2WD |
| Years built | 1975–1977 |
| Operating weight | 11,700lb(5,307 kg) |
Engine
| Make | Allis Chalmers |
|---|---|
| Model | 3500 Mark II |
| Power | 151hp(112.6 kW) |
| Cylinders | 6 |
| Displacement | 426ci(6.98 L) |
| Bore | 4.25in(107.9 mm) |
| Stroke | 5in(127 mm) |
Transmission
| Type | Partial Power Shift |
|---|---|
| Forward gears | 20 |
| Reverse gears | 4 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Hydrostatic Power |
| Brakes | Differential Hydraulic Wet Discs |
| Cab | Acousta-Cab |
Hydraulics
| Type | Closed Center |
|---|
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 173.6in(4,409 mm) |
|---|---|
| Width | 95.5in(2,426 mm) |
| Height | 116in(2,946 mm) |
| Operating weight | 11,700lb(5,307 kg) |
Tires
| Front | 11.00-16Convert |
|---|---|
| Rear | 18.4-38Convert |
Capacities
| Cooling system | 7.75gal(29.34 L) |
|---|
Closest alternatives
7040 compared with the nearest models by horsepower
The closest row crop models to the Allis Chalmers 7040 by rated horsepower are the Allis Chalmers 220 and the McCormick Intl X7.660. The Allis Chalmers 220 matches it on rated power and weighs 460 lb more. It entered production in 1970, 5 years before the 7040. The McCormick Intl X7.660 matches it on rated power and weighs 2,740 lb more, at 96 lb per horsepower against 77 lb. Of the 3 models, the 7040 has the lowest weight per horsepower at 77 lb per hp.
| Spec | Allis Chalmers 7040 | Allis Chalmers 220 | McCormick Intl X7.660 |
|---|---|---|---|
| Engine power | 151 hp112.6 kW | 151 hp112.6 kW | 151 hp112.6 kW |
| Operating weight | 11,700 lb5,307 kg | 12,160 lb5,516 kg | 14,440 lb6,550 kg |
| Weight per hp | 77 lb/hp47 kg/kW | 81 lb/hp49 kg/kW | 96 lb/hp58 kg/kW |
| Displacement | 426 ci6.98 L | 426 ci6.98 L | 410.6 ci6.73 L |
| Cylinders | 6 | 6 | 6 |
| Transmission | Partial Power Shift | Sliding gear | Four-speed power shift |
| Drive | 2WD | 2WD | 4WD |
| Years built | 1975-1977 | 1970-1973 | - |
Calculators
Calculators for the 7040
PTO power
About 125 to 136 PTO hp
Estimated from the 151 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 151 hp tractor can run
Maximum size is about a 18 ft rotary cutter or a 15.5 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
90 lb per PTO hp as listed
Heavy draft work calls for 130 to 150 lb/hp. The calculator gives the ballast to add.
Units
151 hp is 112.6 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Tires
Convert the 18.4-38 tire size
The calculator gives diameter, rolling circumference and the metric or inch equivalent.
Category medians
7040 vs. Row Crop median
Allis Chalmers 7040 compared with other Row Crop tractors
| Spec | This model | Row Crop median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 151 hp | 138 hp | +9% | 58th |
| Engine Displacement | 426 ci | 391 ci | +9% | 72nd |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 20 | 16 | +25% | 70th |
| Operating Weight | 11,700 lb | 12,307 lb | -5% | 45th |
| Length | 174 in | 180 in | -3% | 41st |
| Width | 95.5 in | 91.2 in | +5% | 63rd |
| Height | 116 in | 114 in | +2% | 59th |
Medians and percentiles are calculated from the row crop tractors in the database that have a recorded value for each specification (sample size 806–1,417 models).
Same manufacturer
Other Allis Chalmers models
Other manufacturers
Models with similar horsepower
Gallery
Allis Chalmers 7040 photos
FAQ
Frequently asked questions
When was the Allis Chalmers 7040 in production?
Allis Chalmers 7040 production started in 1975 and ended in 1977.
What type of hydraulic system does the Allis Chalmers 7040 use?
Hydraulics on the Allis Chalmers 7040 are Closed Center.
What size tires does the Allis Chalmers 7040 use?
The Allis Chalmers 7040 is fitted with 11.00-16 front tires and 18.4-38 rear tires from the factory.
What hitch category is the Allis Chalmers 7040?
The Allis Chalmers 7040 uses a Category III/II hitch.
How much horsepower does the Allis Chalmers 7040 have?
The Allis Chalmers 7040 produces 151 hp from its 6-cylinder engine. Engine displacement is 426 ci.
How much does the Allis Chalmers 7040 weigh?
The Allis Chalmers 7040 weighs about 11,700 lb in operating condition.
What transmission is in the Allis Chalmers 7040?
Transmission on the Allis Chalmers 7040 is Partial Power Shift, with 20 forward speeds.
What maintenance does the Allis Chalmers 7040 require?
The Allis Chalmers 7040 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.