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| info | |
| RD4 ↑ | |
| Series: | D4 |
| Production | |
| Manufacturer: | Caterpillar |
| Type: | Agricultural Crawler tractor |
| Factory: | Peoria, Illinois, USA |
| Caterpillar D4 Power | |
| Drawbar (tested): | 35.06 hp 26.1 kW |
| Belt (tested): | 39.82 hp 29.7 kW |
| Caterpillar D4 Engine | |
| Fuel tank: | 20 gal 75.7 L |
| Mechanical | |
| Chassis: | crawler |
| Steering: | manual clutches |
| Cab: | Open operator station. |
| Transmission: | 5-speed gear |
| Dimensions & Tracks | |
| Wheelbase: | 61.125 inches 155 cm |
| Weight: | 9970 to 10250 pounds |
| D4 Serial Numbers | |
| 1936: | 4G1 |
| 1937: | 4G3663 |
| 1938: | 4G8858 |
| 1939: | 7J1 |
| 1940: | 7J1758 |
| 1941: | 7J4119 |
| 1942: | 7J7544 |
| 1943: | 7J2T1 |
| 1944: | 2T3306 |
| 1945: | 5T1 |
| 1946: | 5T3524 |
| 1947: | 5T6780 |
| Links | |
| Caterpillar D-4: A story on the use of a D-4 by VanNatta Forestry |
| info | |
| RD4 ↑ | |
| Series: | D4 |
| Engine Detail | |
| Caterpillar D4400, diesel, 4-cylinder, liquid-cooled, The D4400 was used on the RD4/D4 tractors through the 5T series. | |
| Displacement: | 312 ci 5.1 L |
| Bore/Stroke: | 4.25x5.50 inches 108 x 140 mm |
| Air cleaner: | oil bath |
| Compression: | 17.3:1 |
| Rated RPM: | 1400 |
| Torque: | 421 lb-ft 570.9 Nm |
| Torque RPM: | 1000 |
| Oil capacity: | 16 qts 15.1 L |
| Coolant capacity: | 44 qts 41.6 L |
| info | |
| RD4 ↑ | |
| Series: | D4 |
| Transmission | |
| Type: | gear |
| Gears: | 5 forward and 1 reverse |
| Clutch: | dry disc |
| Oil capacity: | 20 qts 18.9 L |
| info | |
| RD4 ↑ | |
| Series: | D4 |
| Caterpillar D4 Tracks | |
| Size: | 13-inch tracks |
| Dimensions | |
| Wheelbase: | 61.125 inches 155 cm |
| Length: | 120.7 inches 306 cm |
| Width: | 62 inches 157 cm (44" gauge), 78 inches 198 cm (60" gauge) |
| Height (hood): | 60.625 inches 153 cm |
| Weight: | 9970 lbs 4522 kg (44" gauge), 10250 lbs 4649 kg (60" gauge) |
| Ground clearance: | 11.125 inches 28 cm |
| Clearance (drawbar): | 14.25 inches 36 cm |
| Gauge: | 44 inches 111 cm, 60 inches 152 cm |