This page provides a detailed comparison of the specifications for the Allis Chalmers 7580 and the John Deere 9520RX.
| Allis Chalmers 7580 | John Deere 9520RX | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Allis Chalmers | John Deere |
| Engine Model | 3750 Mark II | PSS |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged intercooled | - |
| Engine Cylinders | 6 | 6 |
| Engine Displacement Value | 426 ci (7.0 L) | 827 ci (13.5 L) |
| Engine Rated Rpm | 2550 | - |
| Engine Power Output Value | 186 hp (139.0 kW) | 363 hp (270.3 kW) |
| Transmission | ||
| Transmission Type | Partial power shift | Selective gear fixed ratio with full-range operator controlled power shift |
| Transmission Forward Gears | 20 | 18 |
| Transmission Reverse Gears | 4 | 6 |
| Dimensions | ||
| Length Value | 225 | 322 |
| Width Value | 95.5 | 117.2 |
| Operating Weight Value | 25000 lb (11340 kg) | 57395 lb (26034 kg) |
| Miscellaneous | ||
| Chassis | 4x4 articulated 4WD | Track |
| Drive Type | 4WD | 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | III | - |
| Hitch Category | Category 3 | Category 4N/4 |
| Hitch Position | Rear | - |
| Hydraulic System Type | Closed center | Closed-center pressure/flow compensated |
| Operator Station Type | Acousta cab | - |
| Starter Type | Electric | Electric |
