This page provides a detailed comparison of the specifications for the Allis Chalmers D12 and the Allis Chalmers D15.
| Allis Chalmers D12 | Allis Chalmers D15 | |
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| Engine | ||
| Engine Manufacturer | Allis-Chalmers | Allis Chalmers |
| Engine Model | Power-Crater | - |
| Engine Cooling Type | Liquid-cooled | - |
| Engine Fuel Type | Gasoline | LP gas |
| Engine Induction Type | Naturally Aspirated | Naturally aspirated |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 149 ci (2.4 L) | 149 ci (2.4 L) |
| Engine Rated Rpm | 1650 | 2000 |
| Engine Power Output Value | 31 hp (23.1 kW) | 37 hp (27.9 kW) |
| Transmission | ||
| Transmission Type | Sliding Gear | Partial power shift |
| Transmission Forward Gears | 4 | 8 |
| Transmission Reverse Gears | 1 | 2 |
| Dimensions | ||
| Length Value | 121 | 130.4 |
| Width Value | - | 67 |
| Operating Weight Value | 2800 lb (1270 kg) | 4036 lb (1831 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Snap-Coupler | Snap-Coupler |
| Hitch Category | I | II/I |
| Hitch Position | Rear | Rear |
| Hydraulic System Type | Live | - |
| Operator Station Type | Open | Open |
| Starter Type | Electric | Electric |
