This page provides a detailed comparison of the specifications for the Allis Chalmers HD20 and the John Deere 9420R.
| Allis Chalmers HD20 | John Deere 9420R | |
|---|---|---|
| Images | ||
| Engine | ||
| Engine Manufacturer | General Motors | John Deere |
| Engine Model | - | John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Blower | Electronic injection with turbochargers and aftercooler |
| Engine Cylinders | 6 | 6 |
| Engine Displacement Value | 660 ci (10.8 L) | 826 ci (13.5 L) |
| Engine Rated Rpm | 1700 | 2100 |
| Transmission | ||
| Transmission Type | Torque converter | Selective gear fixed ratio with full range operator controlled power shift |
| Transmission Forward Gears | 2 | 18 |
| Transmission Reverse Gears | 1 | 6 |
| Dimensions | ||
| Length Value | 191 | 314.3 |
| Width Value | - | 176 |
| Operating Weight Value | 41000 lb (18597 kg) | 42965 lb (19489 kg) |
| Miscellaneous | ||
| Hitch Type | - | Category 4N, Category 4 |
| Hitch Category | - | IV |
| Hitch Position | - | Rear |
| Hydraulic System Type | - | Closed-center pressure/flow compensated |
| Operator Station Type | - | Cab |
| Starter Type | 24 volts | 12 volt electric |
