Caterpillar R2 Specs ( 1934-1942 )
Production
| Description | Agricultural Crawler tractor / Built in Peoria, Illinois, USA |
|---|---|
| Manufacturer | Caterpillar |
| Total built | 2418 (total) |
Engine
| Engine type | Caterpillar 4.1L 4-cyl gasoline / Caterpillar 3.6L 4-cyl gasoline |
|---|---|
| Fuel tank | 20 gal (75.7 L) |
| Air cleaner | oil bath / oil bath |
| Bore/Stroke | 4.00x5.00 inches (102 x 127 mm) / 3.75x5.00 inches (95 x 127 mm) |
| Coolant capacity | 28 qts (26.5 L) |
| Description | Caterpillar / gasoline / 4-cylinder / liquid-cooled / Original engine, used on the 5E version. / Caterpillar 3400G / gasoline / 4-cylinder / liquid-cooled / The 3400G was used on the 4J and 6J versions, which were most R-2 tractors built. |
| Displacement | 251 ci (4.1 L) / 221 ci (3.6 L) |
| Oil capacity | 12 qts (11.4 L) |
| Rated RPM | 950 / 1525 |
| Engine type | Caterpillar 4.1L 4-cyl gasoline / Caterpillar 3.6L 4-cyl gasoline |
| Belt (tested) | 32.47 hp (24.2 kW) |
| Drawbar (tested) | 27.15 hp (20.2 kW) |
Transmission
| Description | The three-speed was used on the 5E version, built in limited quantities until 1938. / The five speed transmission was used on the R-2 4J and R-2 6J. |
|---|---|
| Gears | 3 forward and 1 reverse / 5 forward and 1 reverse |
| Oil capacity | 8 qts (7.6 L) |
| Type | gear / gear |
| Transmission type | 3-speed gear / 5-speed gear |
| Transmission type | 3-speed gear / 5-speed gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
Dimensions & Tires
| Gauge | 40 inches (101 cm) / 50 inches (127 cm) |
|---|---|
| Shipping weight | 6350 lbs (2880 kg) |
Belt Pulley
| Diameter | 10.5 inches (26 cm) |
|---|---|
| RPM | 950 |
| Width | 6.5 inches (16 cm) |
Caterpillar R2 Tracks
| Width | 13 inches (33 cm) |
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Dimensions & Tracks
| Description | 13-inch tracks |
|---|---|
| Weight | 6350 lbs (2880 kg) |
Nebraska Tractor Test 225
| Belt fuel use (max) | 3.7 gal/hour (14.0 l/hour) |
|---|---|
| Belt power (max) | 32.47 hp (24.2 kW) |
| Description | 4.1L gasoline 3-speed crawlerSeptember 24 - October 16, 1934Link: Nebraska Tractor Test 225 file / Drawbar performance |
| Max power | 27.15 hp (20.2 kW) |
| Max pull | 5274 lbs (2392 kg) |
Nebraska Tractor Test 320
| Belt fuel use (max) | 3.6 gal/hour (13.6 l/hour) |
|---|---|
| Belt power (max) | 29.31 hp (21.9 kW) |
| Description | 3.6L gasoline 5-speed crawler1939Link: Nebraska Tractor Test 320 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 23.46 hp (17.5 kW) |
| Max pull | 5676 lbs (2574 kg) |
R2 Serial Number Location
| Description | Serial number plate on the left side of the R-2 engine, below the rear spark plug. |
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References
| Description | R2 Tractor published in 1938, by Caterpillar |
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Tractor Tests
| Description | NTTL 225: 4.1L gasoline 3-speed crawler / NTTL 320: 3.6L gasoline 5-speed crawler |
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