Caterpillar Twenty-Five

The Caterpillar Twenty-Five is a tractor produced by Caterpillar. It is equipped with a 277 ci 4.5 L engine. Transmission: 3 forward and 1 reverse. Drive type: crawler.

Drive & Traction

crawler

Fuel & Capacities

Gasoline

Transmission

3 forward and 1 reverse

Overview

	1931 - 1933 Agricultural Crawler tractor

Production
Manufacturer	Caterpillar
Agricultural Crawler tractor
Built in Peoria, Illinois, USA
The Caterpillar Twenty-Five was, basically, a renamed Twenty. In 1933, the model was renamed again, to the Twenty-Eight.

Caterpillar Twenty-Five Engine
Caterpillar 4.5L 4-cyl gasoline
Engine details ...

Caterpillar Twenty-Five Transmission
3-speed gear
Transmission details ...

Caterpillar Twenty-Five Power
Drawbar (claimed)	26 hp 19.4 kW
Belt (claimed)	30 hp 22.4 kW
Drawbar (tested)	27.11 hp 20.2 kW
Belt (tested)	32.97 hp 24.6 kW
Performance test details ...

Mechanical
Drive	crawler
Open operator station.

Dimensions & Tracks
Tracks
Full dimensions and tracks ...

Engine

Engine Detail — 277 ci / 4.5 L Gasoline

Manufacturer	Caterpillar
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	277 ci 4.5 L
Bore/Stroke	4.00x5.50 inches 102 x 140 mm
Rated RPM	1100

Transmission

Transmission — 3 forward and 1 reverse gear

Type	gear
Gears	3 forward and 1 reverse
Clutch	dry disc

Dimensions

Caterpillar Twenty-Five Tracks
Size	4

Dimensions

Tests

Nebraska Tractor Test 203
Gasoline crawler May 16 - 23, 1932 Link: Nebraska Tractor Test 203 file
Belt power (max)	32.97 hp 24.6 kW
Belt fuel use (max)	3.4 gal/hour 12.9 l/hour
Drawbar performance
Max power	27.11 hp 20.2 kW
Max pull	6011 lbs 2726 kg

Photos

Caterpillar Twenty-Five

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Caterpillar Twenty-Five.

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