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Tractor · 1975Unverified

Allis Chalmers 7040

Name: Allis Chalmers 7040
Brand: Allis Chalmers

Allis Chalmers 7040 — Row-Crop tractor · 136 hp. Reference specifications; pending source verification.

The Allis Chalmers 7040 is a tractor with a rated power output of 136 horsepower, placing it at the higher power end of its class. Production of this model occurred between 1975 and 1977. The tractor features a 6-cylinder turbocharged diesel liquid-cooled engine, paired with two-wheel drive and a hydrostatic transmission. Its listed operating weight is 5307 kg, and it is typically used for operations covering 200–800 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

136 hp

Max power

85.2 kW

Weight

5307 kg

Catalogue coverage

Variants represented

Richest spec table

104 rows

Recorded power

136 hp

Recorded weight

5307 kg

Transmissions

20-speed partial power shift

Production years

1975-1977

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerAllis ChalmersReference

Row-Crop tractorReference

Built in West Allis, Wisconsin, USAReference

Original price$24,550Reference

Two-wheel driveReference

Differential lockpower standardReference

Steeringhydrostatic powerReference

Differential hydraulic wet disc brakesReference

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

Engine

Allis Chalmers 7.0L 6-cyl dieselReference

Drawbar (claimed)87.2 kWReference

Drawbar (tested)85.3 kWReference

Allis Chalmers 3500 Mark IIReference

turbocharged dieselReference

6-cylinderReference

liquid-cooledReference

Displacement7.0 LReference

Bore/Stroke108 x 127 mmReference

Pre-heatingetherReference

Pre-heatingcoolant heater (optional)Reference

Compression16:1Reference

Rated RPM2300Reference

Starter volts12Reference

Oil capacity18.0 LReference

Coolant capacity29.3 LReference

Power at rated engine speed101.8 kWReference

Max power85.2 kWReference

Power at rated engine speed101.6 kWReference

Max power85.3 kWReference

Transmission

20-speed partial power shiftReference

12-speed partial power shiftReference

TransmissionPower DirectorReference

Typepartial power shiftReference

Gears20 forward and 4 reverseReference

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.Reference

TransmissionPower ShiftReference

Gears12 forward and 2 reverseReference

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

PTO & Hydraulics

PTO (claimed)101.4 kWReference

PTO (tested)101.8 kWReference

Hydraulic system91.2 LReference

Typeclosed centerReference

Capacity91.2 LReference

Valves2 or 3Reference

Pump flow83.3 lpmReference

Total flow170.3 lpmReference

Rear TypeIII/IIReference

Rear PTOindependentReference

Rear PTO Type540/1000Reference

Rear PTO Type1000 (optional)Reference

Power at rated PTO speed101.6 kWReference

Power at rated PTO speed101.5 kWReference

Capacities

Fuel193.0 LReference

Fuel49.2 LReference

Dimensions

Wheelbase269 cmReference

Weight5307 kgReference

Front tire11.00-16Reference

Rear tire18.4-38Reference

Ag front11.00-16Reference

Ag rear18.4-38Reference

Ag front10.00-16Reference

Ag front14L-16.1Reference

Ag rear20.8-38Reference

Ag rear23.1-34Reference

Ag rear24.5-32Reference

Ag rear30.5-32Reference

Ag rear15.5-38Reference

Ag rear16.9-38Reference

Length440 cmReference

Width242 cmReference

Width303 cmReference

Operating weight5307 kgReference

Ballasted weight7883 kgReference

Clearance (front axle)56 cmReference

Clearance (rear axle)71 cmReference

Front tread157 to 223 cmReference

Rear tread162 to 231 cmReference

Steering wheel220 cmReference

Allis Chalmers 7040 attachments

front-end loaderReference

7040 Serial Numbers

Location:Above PTO shieldReference

19751303Reference

19764089Reference

19776839Reference

FAQ: How to read a serial number table.Reference

Electrical

Charging systemalternatorReference

Battery volts12Reference

Allis Chalmers 7040 Height

Hood172 cmReference

Exhaust294 cmReference

Test results

NTTL 1166: diesel Power Director 2WDReference

NTTL 1196: diesel power shift 2WDReference

Diesel Power Director 2WDOctober 29 - November 7, 1974Link: Nebraska Tractor Test 1166 fileReference

PTO performanceReference

Fuel use34.1 l/hourReference

Drawbar performanceReference

Fuel use33.3 l/hourReference

Gear 4SL used for power test.Reference

Max pull6177 kgReference

Gear 2SL used for pull test.Reference

Diesel power shift 2WDNovember 3 - 20, 1975Link: Nebraska Tractor Test 1196 fileReference

Fuel use33.7 l/hourReference

Gear 1H used for power test.Reference

Max pull6144 kgReference

Gear 2L used for pull test.Reference

Speeds

With 18.4x38 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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