Explore the specifications, hardware, and original references for the Allis-Chalmers 7040.
Allis-Chalmers 7040 · Illustration
151hp
Engine estimate · from PTO
2WD Only
Drive
1975–1977
Production years
Allis-Chalmers
Manufacturer
7040 / 01
At a glance
Production
Row-Crop tractor
Built in West Allis, Wisconsin, USA
Manufacturer
Allis Chalmers
Original Price
$24,550
Mechanical
Two-wheel drive
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.
Differential Lock
power standard
Steering
hydrostatic power
Capacity
Fuel
51 gal193.0 L
Fuel
13 gal (optional tank)49.2 L
Hydraulic System
24.1 gal91.2 L
Hydraulics
Type
closed center
Capacity
24.1 gal91.2 L
Valves
2 or 3
Pump Flow
22 gpm83.3 lpm
Total Flow
45 gpm170.3 lpm
Hitch
Rear Type
III/II
Pto
Rear Pto
independent
Rear Type
540/1000
Rear Type
1000 (optional)
Electrical
Charging System
alternator
Battery Volts
12
7040 / 02
Under the hood
Engine Detail
Allis Chalmers 3500 Mark II
turbocharged diesel
6-cylinder
liquid-cooled
Displacement
426 ci7.0 L
Bore Stroke
4.25x5.00 inches108 x 127 mm
Pre Heating
ether
Pre Heating
coolant heater (optional)
Compression Ratio
16:1
Rated Rpm
2300
Starter Volts
12
Oil Capacity
19 qts18.0 L
Coolant Capacity
31 qts29.3 L
Cylinders
6
Cooling
liquid-cooled
7040 / 03
Gears & controls
Transmission (Option 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
Transmission Type
partial power shift
Gears
20 forward and 4 reverse
Transmission (Option 2)
Six gears in two ranges (slow/fast). Clutchless power shift between gears.
