Caterpillar Forty

The Caterpillar Forty is a tractor produced by Caterpillar. It is equipped with a 485.3 ci 8.0 L engine. Transmission: 4 forward and 1 reverse. Drive type: crawler. Operating weight: 13625 lbs 6180 kg.

Overview

	1934 - 1936 Agricultural Crawler tractor

Production
Manufacturer	Caterpillar
Agricultural Crawler tractor
Built in Peoria, Illinois, USA

Variants
Forty	gas engine
Diesel Forty	diesel engine

Caterpillar Forty Engine
Caterpillar 8.0L 4-cyl gasoline
Engine details ...

Caterpillar Forty Transmission
4-speed gear
Transmission details ...

Caterpillar Forty Power
Drawbar (tested)	48.91 hp 36.5 kW
Belt (tested)	56.42 hp 42.1 kW
Performance test details ...

Mechanical
Drive	crawler
Open operator station.

Dimensions & Tracks
Weight	13625 lbs 6180 kg
16-inch tracks
Full dimensions and tracks ...

Engine

Engine Detail — 485.3 ci / 8.0 L Gasoline

Manufacturer	Caterpillar
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	485.3 ci 8.0 L
Bore/Stroke	5.125x6.50 inches 130 x 165 mm
Rated RPM	850

Transmission

Transmission — 4 forward and 1 reverse gear

Type	gear
Gears	4 forward and 1 reverse

Dimensions

Caterpillar Forty Tracks
Width	16 inches 40 cm

Dimensions
Weight	13625 lbs 6180 kg
Gauge	56 inches 142 cm

Tests

Tractor Tests
NTTL 244: gasoline (850 RPM) 4-speed crawler
NTTL 245: gasoline (1000 RPM) 4-speed crawler

Nebraska Tractor Test 244
Gasoline (850 RPM) 4-speed crawler September 16 - 20, 1935 Link: Nebraska Tractor Test 244 file
Belt power (max)	48.57 hp 36.2 kW
Belt fuel use (max)	5.9 gal/hour 22.3 l/hour
Drawbar performance
Max power	41.78 hp 31.2 kW
Gear 2 used for power test.
Max pull	9692 lbs 4396 kg
Gear 1 used for pull test.

Nebraska Tractor Test 245
Gasoline (1000 RPM) 4-speed crawler September 18 - 23, 1935 Link: Nebraska Tractor Test 245 file
Belt power (max)	56.42 hp 42.1 kW
Belt fuel use (max)	6.9 gal/hour 26.1 l/hour
Drawbar performance
Max power	48.91 hp 36.5 kW
Gear 2 used for power test.
Max pull	9466 lbs 4293 kg
Gear 1 used for pull test.