Tractor · 1934Unverified
Caterpillar Forty
Caterpillar Forty — Agricultural Crawler tractor · 49 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
49 hp
Max power
31.2 kW
Weight
6180 kg
Hover a source tag to verify
Overview
ManufacturerCaterpillarReference
Agricultural Crawler tractorReference
Built in Peoria, Illinois, USAReference
DrivecrawlerReference
Open operator station.Reference
Variants
Fortygas engineReference
Diesel Fortydiesel engineReference
Engine
Caterpillar 8.0L 4-cyl gasolineReference
Drawbar (tested)36.5 kWReference
Belt (tested)42.1 kWReference
CaterpillarReference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement8.0 LReference
Bore/Stroke130 x 165 mmReference
Rated RPM850Reference
Belt power (max)36.2 kWReference
Max power31.2 kWReference
Belt power (max)42.1 kWReference
Max power36.5 kWReference
Transmission
4-speed gearReference
TypegearReference
Gears4 forward and 1 reverseReference
Dimensions
Weight6180 kgReference
16-inch tracksReference
Gauge142 cmReference
Forty Serial Numbers
19345G1Reference
19355G43Reference
19365G434Reference
Final5G584Reference
FAQ: How to read a serial number table.Reference
Caterpillar Forty Tracks
Width40 cmReference
Test results
NTTL 244: gasoline (850 RPM) 4-speed crawlerReference
NTTL 245: gasoline (1000 RPM) 4-speed crawlerReference
Gasoline (850 RPM) 4-speed crawlerSeptember 16 - 20, 1935Link: Nebraska Tractor Test 244 fileReference
Belt fuel use (max)22.3 l/hourReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull4396 kgReference
Gear 1 used for pull test.Reference
Gasoline (1000 RPM) 4-speed crawlerSeptember 18 - 23, 1935Link: Nebraska Tractor Test 245 fileReference
Belt fuel use (max)26.1 l/hourReference
Max pull4293 kgReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.