1925 - 1938
| 1925 - 1938 |
| Agricultural Crawler tractor |
Series:
| Series: | Thirty |
| R4 ↓ |
1938 - 1944
| 1938 - 1944 |
| Agricultural Crawler tractor |
Production
| Production |
| Manufacturer: | Caterpillar
|
| Type: | Agricultural Crawler tractor
|
| Factory: | Peoria, Illinois, USA
|
| The Caterpillar R4 was a continuation of the model Thirty. |
Caterpillar R4 Power
| Caterpillar R4 Power |
| Drawbar (tested): | 30.88 hp
23.0 kW
|
| Belt (tested): | 36.37 hp
27.1 kW
|
| power test details ... |
Caterpillar R4 Engine
| Caterpillar R4 Engine |
| Caterpillar 7.6L 4-cyl gasoline |
| Engine details ... |
Mechanical
| Mechanical |
| Chassis: | crawler
|
| Cab: | Open operator station.
|
| Transmission: | 5-speed gear
|
| Transmission details ... |
Dimensions & Tracks
| Dimensions & Tracks |
| 44-inch tracks |
| Full dimensions and tracks ... |
Production
| Production |
| Manufacturer: | Caterpillar
|
| Type: | Agricultural Crawler tractor
|
| Factories: | San Leandro, California, USA
|
| | Peoria, Illinois, USA
|
| The Caterpillar model Thirty is a continuation of the Best model Thirty, which had been in production since 1921 |
Caterpillar Thirty Power
| Caterpillar Thirty Power |
| Drawbar (tested): | 30.88 hp
23.0 kW
|
| Belt (tested): | 36.37 hp
27.1 kW
|
| power test details ... |
1925 - 1938
| 1925 - 1938 |
| Agricultural Crawler tractor |
Series:
Nebraska Tractor Test 272
| Nebraska Tractor Test 272 |
| |
Nebraska Tractor Test 272
| Nebraska Tractor Test 272 |
Distillate 5-speed crawler
October 13 - 24, 1936
Link: Nebraska Tractor Test 272 file |
| Belt power (max): | 36.37 hp
27.1 kW
|
| Drawbar performance |
| Max power: | 30.88 hp
23.0 kW
|
| Gear 2 used for power test. |
| Max pull: | 6120 lbs
2776 kg
|
| Gear 1 used for pull test. |
Caterpillar Thirty Engine
| Caterpillar Thirty Engine |
| Caterpillar 7.6L 4-cyl gasoline |
| Fuel tank: | 37.5 gal
141.9 L
|
| Aux. fuel: | 2.6 gal
9.8 L
|
| Engine details ... |
1925 - 1938
| 1925 - 1938 |
| Agricultural Crawler tractor |
Series:
Engine Detail
| Engine Detail |
| Caterpillar |
| gasoline |
| 4-cylinder |
| liquid-cooled |
| Displacement: | 461 ci
7.6 L
|
| Bore/Stroke: | 4.75x6.50 inches
121 x 165 mm
|
| Fuel system: | Zenith K5A carburetor
|
| Air cleaner: | oil bath
|
| Rated RPM: | 1400
|
Mechanical
| Mechanical |
| Chassis: | crawler
|
| Cab: | Open operator station.
|
| Transmissions: | 3-speed gear
|
| | 5-speed gear
|
| Transmission details ... |
1925 - 1938
| 1925 - 1938 |
| Agricultural Crawler tractor |
Series:
Transmissions overview
| Transmissions overview |
| 3-speed gear |
| 5-speed gear |
Transmission
| Transmission |
| Type: | gear
|
| Gears: | 3 forward and 1 reverse
|
Transmission
| Transmission |
| Type: | gear
|
| Gears: | 5 forward and 1 reverse
|
| Clutch: | dry disc
|
Speeds
Dimensions & Tracks
| Dimensions & Tracks |
| 13-inch tracks |
| Full dimensions and tracks ... |
1925 - 1938
| 1925 - 1938 |
| Agricultural Crawler tractor |
Series:
Caterpillar Thirty Tracks
| Caterpillar Thirty Tracks |
| Size: | 13-inch tracks
|
| Option: | 16-inch tracks
|
| | 18-inch tracks
|
| | 24-inch tracks
|
| | 30-inch tracks
|
Dimensions
| Dimensions |
| Gauge: | 43.75 inches
111 cm
|
| Gauge: | 60.75 inches
154 cm
|
Belt Pulley
| Belt Pulley |
| Diameter: | 12 inches
30 cm
|
| Width: | 8.5 inches
21 cm
|
| RPM: | 840
|
