Caterpillar R4 Specs ( 1938-1944 )
Overview
The Caterpillar R4 is a farm crawler tractor produced in Peoria, Illinois, from 1938 to 1944 as a continuation of the model Thirty. It features a 7.6L 4-cylinder liquid-cooled gasoline engine and an open operator station configuration.
Ideal Applications
Tested Power Output:
Nebraska Tractor Test 272 recorded a maximum belt power of 36.37 hp and a maximum drawbar power of 30.88 hp.
Mechanical Drive and Transmission:
The unit is equipped with a crawler drive system and a gear transmission featuring 5 forward speeds and 1 reverse speed.
Drawbar Pull Capacity:
During official testing using the first gear for the pull test, the machine achieved a maximum pull of 6,120 lbs.
Production
| Description | Agricultural Crawler tractor / Built in Peoria, Illinois, USA / The Caterpillar R4 was a continuation of the model Thirty. |
|---|---|
| Manufacturer | Caterpillar |
Engine
| Engine type | Caterpillar 7.6L 4-cyl gasoline |
|---|---|
| Bore/Stroke | 4.75x6.50 inches (121 x 165 mm) |
| Description | Caterpillar / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 461 ci (7.6 L) |
| Rated RPM | 1400 |
| Belt (tested) | 36.37 hp (27.1 kW) |
| Drawbar (tested) | 30.88 hp (23.0 kW) |
Transmission
| Gears | 5 forward and 1 reverse |
|---|---|
| Transmission type | 5-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
Dimensions & Tracks
| Description | Tracks |
|---|
Nebraska Tractor Test 272
| Belt power (max) | 36.37 hp (27.1 kW) |
|---|---|
| Description | Distillate 5-speed crawlerOctober 13 - 24, 1936Link: Nebraska Tractor Test 272 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 30.88 hp (23.0 kW) |
| Max pull | 6120 lbs (2776 kg) |