Tractor · 1934Unverified
Caterpillar R2
Caterpillar R2 — Agricultural Crawler tractor · 27 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
27 hp
Max power
20.2 kW
Weight
2880 kg
Hover a source tag to verify
Overview
ManufacturerCaterpillarReference
Agricultural Crawler tractorReference
Built in Peoria, Illinois, USAReference
Total built2418 (total)Reference
Total built83 (5E)Reference
Total built1185 (4J)Reference
Total built1150 (6J)Reference
DrivecrawlerReference
Open operator station.Reference
Engine
Caterpillar 4.1L 4-cyl gasolineReference
Caterpillar 3.6L 4-cyl gasolineReference
Fuel tank75.7 LReference
Drawbar (tested)20.2 kWReference
Belt (tested)24.2 kWReference
CaterpillarReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Original engine, used on the 5E version.Reference
Displacement4.1 LReference
Bore/Stroke102 x 127 mmReference
Air cleaneroil bathReference
Rated RPM950Reference
Caterpillar 3400GReference
The 3400G was used on the 4J and 6J versions, which were most R-2 tractors built.Reference
Displacement3.6 LReference
Bore/Stroke95 x 127 mmReference
Rated RPM1525Reference
Oil capacity11.4 LReference
Coolant capacity26.5 LReference
Belt power (max)24.2 kWReference
Max power20.2 kWReference
Belt power (max)21.9 kWReference
Max power17.5 kWReference
Transmission
3-speed gearReference
5-speed gearReference
TypegearReference
Gears3 forward and 1 reverseReference
The three-speed was used on the 5E version, built in limited quantities until 1938.Reference
Gears5 forward and 1 reverseReference
Oil capacity7.6 LReference
The five speed transmission was used on the R-2 4J and R-2 6J.Reference
Dimensions
Weight2880 kgReference
13-inch tracksReference
Shipping weight2880 kgReference
Gauge101 cmReference
Gauge127 cmReference
R2 Serial Number Location
Serial number plate on the left side of the R-2 engine, below the rear spark plug.Reference
Capacities
Diameter26 cmReference
Width16 cmReference
RPM950Reference
Caterpillar R2 Tracks
Width33 cmReference
Test results
NTTL 225: 4.1L gasoline 3-speed crawlerReference
NTTL 320: 3.6L gasoline 5-speed crawlerReference
4.1L gasoline 3-speed crawlerSeptember 24 - October 16, 1934Link: Nebraska Tractor Test 225 fileReference
Belt fuel use (max)14.0 l/hourReference
Drawbar performanceReference
Max pull2392 kgReference
3.6L gasoline 5-speed crawler1939Link: Nebraska Tractor Test 320 fileReference
Belt fuel use (max)13.6 l/hourReference
Gear 2 used for power test.Reference
Max pull2574 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.