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| info | |
| The Caterpillar R4 was a continuation of the model Thirty. |
| Production | |
| Manufacturer: | Caterpillar |
| Factory: | Peoria, Illinois, USA |
| Dimensions & Tires | |
| Front tire: | tracks |
| Rear tire: | tracks |
| Caterpillar R4 Power | |
| Drawbar (tested): | 30.88 hp [23.0 kW] |
| Belt (tested): | 36.37 hp [27.1 kW] |
| Mechanical | |
| Chassis: | crawler |
| Cab: | Open operator station. |
| info | |
| Bore/Stroke: | 4.75x6.50 inches [121 x 165 mm] |
| Rated RPM: | 1400 |
| Engine Detail | |
| Caterpillar, gasoline, 4-cylinder, liquid-cooled, 461 ci [7.6 L] |
| info | |
| Previous model: | Caterpillar Thirty |
| Transmission | |
| Type: | gear |
| Gears: | 5 forward and 1 reverse |
| info | |
| Previous model: | Caterpillar Thirty |
| Caterpillar R4 Tires | |
| Ag front: | 44-inch tracks, 60-inch tracks |
| Ag rear: | 44-inch tracks, 60-inch tracks |