Tractor · 1938Unverified
Caterpillar R4
Caterpillar R4 — Agricultural Crawler tractor · 31 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
31 hp
Max power
23.0 kW
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Overview
ManufacturerCaterpillarReference
Agricultural Crawler tractorReference
Built in Peoria, Illinois, USAReference
The Caterpillar R4 was a continuation of the model Thirty.Reference
DrivecrawlerReference
Open operator station.Reference
Engine
Caterpillar 7.6L 4-cyl gasolineReference
Drawbar (tested)23.0 kWReference
Belt (tested)27.1 kWReference
CaterpillarReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement7.6 LReference
Bore/Stroke121 x 165 mmReference
Rated RPM1400Reference
Belt power (max)27.1 kWReference
Max power23.0 kWReference
Transmission
5-speed gearReference
TypegearReference
Gears5 forward and 1 reverseReference
Dimensions
TracksReference
Test results
Distillate 5-speed crawlerOctober 13 - 24, 1936Link: Nebraska Tractor Test 272 fileReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull2776 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.