Caterpillar Thirty

The Caterpillar Thirty is a tractor produced by Caterpillar. It is equipped with a 461 ci 7.6 L engine. Transmission: 5 forward and 1 reverse. Drive type: crawler.

Drive & Traction

crawler

Fuel & Capacities

37.5 gal 141.9 L

Transmission

5 forward and 1 reverse

Overview

	1925 - 1938 Agricultural Crawler tractor

Production
Manufacturer	Caterpillar
Agricultural Crawler tractor
Factories	San Leandro, California, USA
	Peoria, Illinois, USA
The Caterpillar model Thirty is a continuation of the Best model Thirty, which had been in production since 1921

Caterpillar Thirty Engine
Caterpillar 7.6L 4-cyl gasoline
Fuel tank	37.5 gal 141.9 L
Aux. fuel	2.6 gal 9.8 L
Engine details ...

Caterpillar Thirty Power
Drawbar (tested)	30.88 hp 23.0 kW
Belt (tested)	36.37 hp 27.1 kW
Performance test details ...

Mechanical
Drive	crawler
Open operator station.

Dimensions & Tracks
13-inch tracks
Full dimensions and tracks ...

Belt Pulley
Diameter	12 inches 30 cm
Width	8.5 inches 21 cm
RPM	840

References

30 published in 1926, by Caterpillar
Thirty Tractor published in 1926, by Caterpillar

Engine

Engine Detail — 461 ci / 7.6 L Gasoline

Manufacturer	Caterpillar
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	461 ci 7.6 L
Bore/Stroke	4.75x6.50 inches 121 x 165 mm
Fuel system	Zenith K5A carburetor
Air cleaner	oil bath
Rated RPM	1400

Transmission

Transmission options
3-speed gear
5-speed gear

Transmission — 3 forward and 1 reverse gear

Type	gear
Gears	3 forward and 1 reverse

Transmission — 5 forward and 1 reverse gear

Type	gear
Gears	5 forward and 1 reverse
Clutch	dry disc

Dimensions

Caterpillar Thirty Tracks
Width	13 inches 33 cm
Width	16 inches 40 cm
Width	18 inches 45 cm
Width	24 inches 60 cm
Width	30 inches 76 cm

Dimensions
Gauge	43.75 inches 111 cm
Gauge	60.75 inches 154 cm

Tests

Nebraska Tractor Test 272
Distillate 5-speed crawler October 13 - 24, 1936 Link: Nebraska Tractor Test 272 file
Belt power (max)	36.37 hp 27.1 kW
Drawbar performance
Max power	30.88 hp 23.0 kW
Gear 2 used for power test.
Max pull	6120 lbs 2776 kg
Gear 1 used for pull test.

Photos

Caterpillar Thirty

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Caterpillar Thirty.

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours