This page provides a detailed comparison of the specifications for the Allis Chalmers D21 Series II and the John Deere 4520.
| Allis Chalmers D21 Series II | John Deere 4520 | |
|---|---|---|
| Images | ||
| Engine | ||
| Engine Manufacturer | Allis Chalmers | John Deere |
| Engine Model | 3500 | John Deere |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Naturally aspirated | Turbocharged |
| Engine Cylinders | 6 | 4 |
| Engine Displacement Value | 426 ci (7.0 L) | 149 ci (2.4 L) |
| Engine Rated Rpm | 2200 | - |
| Engine Power Output Value | 121 hp (90.2 kW) | 56 hp (41.7 kW) |
| Transmission | ||
| Transmission Type | Sliding gear with dry disc clutch | Hydrostatic |
| Transmission Forward Gears | 8 | Infinitely variable |
| Transmission Reverse Gears | 2 | Infinitely variable |
| Dimensions | ||
| Length Value | 160.2 | 170.5 |
| Width Value | 91.3 | 95.7 |
| Operating Weight Value | 9502 lb (4310 kg) | 3860 lb (1751 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | - |
| Drive Type | 2WD | 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Three-Point Hitch | - |
| Hitch Category | III/II | II |
| Hitch Position | Rear | - |
| Hydraulic System Type | - | Closed center |
| Operator Station Type | Open | Open operator station |
| Starter Type | Electric | Electric |
