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Allis Chalmers 7040 Technical Data

AC 7040 Engine Specifications

Engine Model .................. Allis Chalmers 3500 Mark-2
Engine Type .................. 4-stroke, 6-cylinder turbocharged diesel
Number of Cylinders .................. 6
Displacement, cu in (L) .................. 426 (7.00)
Engine Bore, in (mm) .................. 4.25 (108.0)
Engine Stroke, in (mm) .................. 5.00 (127.0)
Aspiration .................. Turbocharged
Rated Engine Power, hp (kW) .................. 151.0 (112.0)
Rated Engine Speed, rpm .................. 2300
Compression .................. 16.0:1
Firing Order .................. 1-5-3-6-2-4
Fuel System .................. Direct injection
Air Cleaner .................. Dry with pre-cleaner
Fuel Tank Capacity, gal (L) .................. 51.0 (193.0)
Oil Capacity, qts (L) .................. 19.0 (18.0)
Coolant Capacity, qts (L) .................. 31.0 (29.3)
Electrical System Rating, Volts .................. 12
Charging System .................. Alternator

Power Take-Off

PTO Operational Type .................. Independent
PTO Horsepower, hp (kW) .................. 136.0 (101.4)
PTO Clutch .................. Wet disc
PTO Speed, rpm .................. 1000
PTO / Engine Speed, rpm .................. 1000/2252
PTO / Engine Speed, rpm .................. 1021/2300

Allis Chalmers 7040 Transmission

Transmission Type .................. Power Director
Gearbox Type .................. 20F/4R, partial powershift
Number of Forward Gears .................. 20
Number of Reverse Gears .................. 4
Clutch Type .................. Wet disc
Maximum Forward Speed, mph (kph) .................. 18.8 (30.2)
Maximum Reverse Speed, mph (kph) .................. 8.4 (13.5)

Transmission Type .................. Power Director
Gearbox Type .................. 12F/2R, partial powershift
Number of Forward Gears .................. 12
Number of Reverse Gears .................. 2
Clutch Type .................. Wet disc
Maximum Forward Speed, mph (kph) .................. 18.4 (29.6)
Maximum Reverse Speed, mph (kph) .................. 8.0 (12.9)

Allis Chalmers 7040 Wheels and Tires

Drive Wheels .................. 2WD 4x2
Steering Configuration .................. Front steer
Steering System .................. Hydrostatic power
Brakes Type .................. Differential hydraulic wet disc
Front Tire Size (Std) .................. 11.0x16
Rear Tire Size (Std) .................. 18.4x38
Front Tire Size (Opt) .................. 14Lx16.1
Rear Tire Size (Opt) .................. 23.1x34
Front Tread Width, in (mm) .................. 62-88 (1575-2230)
Rear Tread Width, in (mm) .................. 64-91 (1620-2310)

AC 7040 Hydraulic System

Hydraulic System Type .................. Closed Center
Implement Pump Flow, gpm (Lpm) .................. 22.0 (83.3)
Total Flow, gpm (Lpm) .................. 45.0 (170.3)
Hydraulic Fluid Capacity, gal (L) .................. 24.1 (91.2)
Number of Standard Remote Valves .................. 2/3
3-Point Hitch Category .................. 3/2

Allis Chalmers 7040 Dimensions and Weight

Wheelbase, in (mm) .................. 106 (2690)
Length, in (mm) .................. 173.6 (4400)
Height (Hood), in (mm) .................. 68 (1720)
Height (Steering Wheel), in (mm) .................. 87 (2200)
Overall Width, in (mm) .................. 95.5 (2420)
Ground Clearance, in (mm) .................. 22.4 (560)
Turning Radius, in (mm) .................. 170 (4300)
Weight (Operating), lb (kg) .................. 11700 (5310)
Weight (Ballasted), lb (kg) .................. 17380 (7885)