| Manufacturer |
Allis Chalmers |
| Price |
63,084(USD) |
| Model |
7580 |
| Equipment Type |
Four-wheel Drive 4WD Tractors |
| Factory |
West Allis, Wisconsin, USA |
NEBRASKA TRACTOR TEST 1229 2
| Description |
Diesel 20-speed 4WD October 26 - November 8, 1976 Link: Nebraska Tractor Test 1229 file PTO performance Drawbar performance Gear 4SL used for power test Gear 1SH used for pull test |
| Power at rated engine speed |
186.35hp / 139.0kW |
| Fuel use |
12.6gal/hour / 47.7l/hour |
| Max power |
153.70hp / 114.6kW |
| Max pull |
23,310lbs / 10573kg |
ALLIS CHALMERS 7580 POWER
| Drawbar (claimed) |
153hp / 114.1kW |
| PTO (claimed) |
186hp / 138.7kW |
| Drawbar (tested) |
153.70hp / 114.6kW |
| PTO (tested) |
186.35hp / 139.0kW |
ENGINE DETAIL
The Allis Chalmers 7580 features a robust 7.0L turbocharged diesel engine with a high compression ratio of 16:1, optimizing power delivery and efficiency at rated RPMs of 2550. Its substantial oil and coolant capacities (25qts and 38qts, respectively) ensure adequate lubrication and temperature regulation during extended operations, which is advantageous for heavy-duty tasks. However, the reliance on a dry air cleaner may necessitate more frequent maintenance in dusty environments, potentially impacting operational readiness.
| Description |
Allis Chalmers 3750 Mark II turbocharged intercooled diesel 6-cylinder liquid-cooled inline |
| Displacement |
426ci / 7.0L |
| Bore/Stroke |
4.25x5.00inches / 108x 127mm |
| Air cleaner |
dry |
| Compression |
16:1 |
| Rated RPM |
2550 |
| Idle RPM |
775-2750 |
| Firing order |
1-5-3-6-2-4 |
| Starter volts |
12 |
| Oil capacity |
25qts / 23.7L |
| Coolant capacity |
38qts / 36.0L |
ALLIS CHALMERS 7580 ENGINE
The Allis Chalmers 7580 features a robust 7.0L 6-cylinder diesel engine, providing substantial power for heavy-duty agricultural tasks. Its large 170-gallon fuel tank offers extended operational range, ideal for long hours in the field without frequent refueling. However, the tractor's size and weight may pose challenges in navigating tighter spaces or softer terrain.
| Description |
Allis Chalmers 7.0L 6-cyl diesel |
| Fuel tank |
170gal / 643.5L |
TRANSMISSION
The Allis Chalmers 7580 features a Power Director transmission, allowing for seamless partial power shifting, which enhances operational efficiency during varied field conditions. With 20 forward and 4 reverse gears, it provides excellent speed and torque management, beneficial for tasks requiring precise control, such as plowing or tilling. However, the complexity of the transmission system may necessitate specialized maintenance knowledge, potentially increasing long-term service costs.
| Transmission |
Power Director |
| Type |
partial power shift |
| Gears |
20 forward and 4 reverse |
SPEEDS
| Description |
With 20.8x38 rear tires |
MECHANICAL
The Allis Chalmers 7580 features a robust 4x4 articulated 4WD chassis, providing enhanced traction and maneuverability for various agricultural tasks. Its hydrostatic power steering offers precise control, while hydraulic wet disc brakes ensure effective stopping power even in challenging conditions. With a 20-speed partial power shift transmission, operators can efficiently manage power delivery and optimize performance in diverse field scenarios, balancing speed with load management.
| Chassis |
4x4 articulated 4WD |
| Steering |
hydrostatic power |
| Brakes |
hydraulic wet discs |
| Cab |
Acousta cab standard with heat and air-conditioning. Optional radio and 8 track tape player |
| Transmission |
20-speed partial power shift |
HYDRAULICS
| Type |
closed center |
| Valves |
3 to 4 |
| Pump flow |
23gpm / 87.1lpm |
| Total flow |
74.9gpm / 283.5lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
1000 |
ALLIS CHALMERS 7580 TIRES
The Allis Chalmers 7580, equipped with 23.1x30 tires both front and rear, offers excellent traction and stability, ideal for heavy tillage operations and large field work. With the versatility of rear tire options ranging from 18.4x38 to 30.5x32, operators can customize the tractor for varying soil conditions and load requirements, enhancing performance and reducing soil compaction. However, the larger tire sizes may require careful evaluation of compatibility with existing implement sizes and terrain types to optimize operational efficiency.
| Ag front |
23.1x30 |
| Ag rear |
23.1x30 / 24.5x32 / 30.5x32 / 20.8x34 / 18.4x38 |
DIMENSIONS
| Wheelbase |
126inches / 320cm |
| Length |
225inches / 571cm |
| Width |
95.5inches / 242cm 119.5inches / 303cm (long axle) |
| Height (hood) |
85.3inches / 216cm |
| Height (exhaust) |
150inches / 381cm |
| Ground clearance |
17inches / 43cm |
| Front tread |
62 to 123inches / 157to 312cm |
| Rear tread |
62 to 123inches / 157to 312cm |
ALLIS CHALMERS 7580 WEIGHT
| Shipping |
23,100lbs / 10478kg |
| Operating |
23,510lbs / 10664kg |
| Ballasted |
25,000lbs / 11340kg |
DIMENSIONS & TIRES
The Allis Chalmers 7580 features a robust wheelbase of 126 inches, providing stability in field operations, especially when handling heavy loads. Weighing between 23,100 and 23,510 pounds, it offers a solid footprint that can improve traction and minimize soil compaction. The uniform tire size (20.8x38) on both front and rear enhances balanced weight distribution and provides optimal performance in diverse agricultural conditions.
| Wheelbase |
126inches / 320cm |
| Weight |
23100 to 23510 pounds |
| Front tire |
20.8x38 |
| Rear tire |
20.8x38 |
7580 SERIAL NUMBERS
| Location |
Front frame, rear left side |
| 1976 |
1001 |
| 1977 |
1288 |
| 1978 |
1605 |
| 1979 |
2218 |
| 1980 |
2486 |
| 1981 |
2717 |
| Final |
3018 |
ELECTRICAL
| Charging system |
alternator |
| Batteries |
4 |
| Battery volts |
12 |
