Allis Chalmers 7040

The Allis Chalmers 7040 is a tractor produced by Allis Chalmers. It is equipped with a 426 ci 7.0 L engine. The listed engine power is 136.30 hp 101.6 kW. Transmission: Power Shift. Operating weight: 11,700 lbs 5307 kg.

Engine Power

136.30 hp 101.6 kW

Fuel & Capacities

51 gal 193.0 L

Transmission

Power Shift

Operating Weight

11,700 lbs 5307 kg

Overview

	1975 - 1977 7000 SeriesRow-Crop tractor 7000 Series Row-Crop tractor

Production
Manufacturer	Allis Chalmers
Row-Crop tractor
Built in West Allis, Wisconsin, USA
Original price	$24,550

Allis Chalmers 7040 Engine
Allis Chalmers 7.0L 6-cyl diesel
Engine details ...

Allis Chalmers 7040 Power
Drawbar (claimed)	117 hp 87.2 kW
PTO (claimed)	136 hp 101.4 kW
Drawbar (tested)	114.34 hp 85.3 kW
PTO (tested)	136.49 hp 101.8 kW
Performance test details ...

Mechanical
Two-wheel drive
Differential lock	power standard
Steering	hydrostatic power
Differential hydraulic wet disc brakes
Acousta cab standard with heater, air-conditioning optional. Optional radio and 8-track tape player. Four-post ROPS canopy optional.

Capacity
Fuel	51 gal 193.0 L
	13 gal (optional tank) 49.2 L
Hydraulic system	24.1 gal 91.2 L

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

Tractor hitch
Rear Type	III/II

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000
	1000 (optional)

Dimensions & Tires
Wheelbase	106 inches 269 cm
Weight	11,700 lbs 5307 kg
Front tire	11.00-16
Rear tire	18.4-38
Full dimensions and tires ...

Electrical
Charging system	alternator
Battery volts	12

References

Loaders - picking up where the others leave off published in 1979, by Allis Chalmers
7040/7060/7080 - The Rising Power in Farming published in 1976, by Allis Chalmers

Engine

Engine Detail — 426 ci / 7.0 L Diesel

Configuration	turbocharged diesel, 6-cylinder, liquid-cooled
Allis Chalmers 3500 Mark II
Displacement	426 ci 7.0 L
Bore/Stroke	4.25x5.00 inches 108 x 127 mm
Pre-heating	ether
	coolant heater (optional)
Compression	16:1
Rated RPM	2300
Starter volts	12
Oil capacity	19 qts 18.0 L
Coolant capacity	31 qts 29.3 L

Transmission

Transmission options
20-speed partial power shift
12-speed partial power shift

Transmission — Power Director

Transmission	Power Director
Type	partial power shift
Gears	20 forward and 4 reverse
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.
With 18.4x38 rear tires.

Transmission — Power Shift

Transmission	Power Shift
Type	partial power shift
Gears	12 forward and 2 reverse
Six gears in two ranges (slow/fast). Clutchless power shift between gears.
With 18.4x38 rear tires.

Dimensions

Allis Chalmers 7040 Tires
Ag front	11.00-16
Ag rear	18.4-38
Ag front	10.00-16
	14L-16.1
Ag rear	20.8-38
	23.1-34
	24.5-32
	30.5-32
	15.5-38
	16.9-38

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

Allis Chalmers 7040 Height
Steering wheel	87 inches 220 cm
Hood	68 inches 172 cm
Exhaust	116 inches 294 cm

Tests

Tractor Tests
NTTL 1166: diesel Power Director 2WD
NTTL 1196: diesel power shift 2WD

Nebraska Tractor Test 1166
Diesel Power Director 2WD October 29 - November 7, 1974 Link: Nebraska Tractor Test 1166 file
PTO performance
Power at rated engine speed	136.49 hp 101.8 kW
Fuel use	9.0 gal/hour 34.1 l/hour
Power at rated PTO speed	136.26 hp 101.6 kW
Fuel use	9.0 gal/hour 34.1 l/hour
Drawbar performance
Max power	114.23 hp 85.2 kW
Fuel use	8.8 gal/hour 33.3 l/hour
Gear 4SL used for power test.
Max pull	13,619 lbs 6177 kg
Gear 2SL used for pull test.

Nebraska Tractor Test 1196
Diesel power shift 2WD November 3 - 20, 1975 Link: Nebraska Tractor Test 1196 file
PTO performance
Power at rated engine speed	136.30 hp 101.6 kW
Fuel use	8.9 gal/hour 33.7 l/hour
Power at rated PTO speed	136.15 hp 101.5 kW
Fuel use	8.8 gal/hour 33.3 l/hour
Drawbar performance
Max power	114.34 hp 85.3 kW
Fuel use	8.8 gal/hour 33.3 l/hour
Gear 1H used for power test.
Max pull	13,547 lbs 6144 kg
Gear 2L used for pull test.

Photos

Allis Chalmers 7040

Recommended Implements & Sizing Guide

Engineering recommendations for Allis Chalmers 7040 based on its 136.3 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙	Commercial / Field Scale	Wide commercial field leveling; requires hydraulic remotes.
Hay BalerHay & Forage	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers 7040.

Estimated Continuous Field Runtime: 7.2 hrs

Approximately 7.2 hours of continuous field operation at ~75% rated power on a full tank (51 gal / 193.1 L).

Estimated 75% Load Fuel Burn~7.1 gal/hr (26.8 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours