This page provides a detailed comparison of the specifications for the Allis Chalmers HD6 and the Caterpillar D4D SA Special Application.
| Allis Chalmers HD6 | Caterpillar D4D SA Special Application | |
|---|---|---|
| Images | ||
| Engine | ||
| Engine Manufacturer | Allis-Chalmers | Caterpillar |
| Engine Model | HD-344 | D330 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Natural Aspirated | - |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 344 ci (5.6 L) | 425 ci (7.0 L) |
| Engine Rated Rpm | 1800 | 2000 |
| Engine Power Output Value | - | 74 hp (55.2 kW) |
| Transmission | ||
| Transmission Type | Sliding Gear | Gear |
| Transmission Forward Gears | 5 | 5 |
| Transmission Reverse Gears | 1 | 5 |
| Dimensions | ||
| Length Value | 127 | 132 |
| Width Value | 78.5 | 78 |
| Operating Weight Value | 13400 lb (6078 kg) | 15200 lb (6895 kg) |
| Miscellaneous | ||
| Chassis | Crawler | crawler |
| Drive Type | Tracks | - |
| Hydraulic System Type | - | Open Center |
| Operator Station Type | Open operator station | - |
| Starter Type | Electric | Electric |
