Caterpillar Twenty-Two

The Caterpillar Twenty-Two is a tractor produced by Caterpillar. It is equipped with a 251 ci 4.1 L engine. The rated power output is 30.71 hp 22.9 kW. Transmission: 3 forward and 1 reverse. Drive type: crawler. Operating weight: 6200 to 6270 pounds.

Overview

	1934 - 1939 Agricultural Crawler tractor
1934 - 1939
Agricultural Crawler tractor

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

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

Caterpillar Twenty-Two Power
Drawbar (tested)	25.26 hp 18.8 kW
Belt (tested)	30.71 hp 22.9 kW
Performance test details ...

Mechanical
Drive	crawler
Steering	manual clutches
Open operator station.

Dimensions & Tracks
Weight	6200 to 6270 pounds
10-inch tracks
Full dimensions and tracks ...

Links
Caterpillar Twenty-Two: photos of a restoration
Caterpillar Twenty-Two: photos and information on a Cat 22 restoration in Australia

Belt Pulley
Diameter	10.5 inches 26 cm
Width	6.5 inches 16 cm
RPM	950

Engine

Engine options
Caterpillar 4.1L 4-cyl gasoline
Caterpillar 4.1L 4-cyl distillate

Engine Detail — 251 ci / 4.1 L Gasoline

Manufacturer	Caterpillar
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	251 ci 4.1 L
Bore/Stroke	4.00x5.00 inches 102 x 127 mm
Fuel system	Zenith K5A carburetor
Rated RPM	1250
Oil capacity	10 qts 9.5 L
Coolant capacity	20 qts 18.9 L

Engine Detail — 251 ci / 4.1 L

Manufacturer	Caterpillar
Configuration	4-cylinder, liquid-cooled
distillate
Displacement	251 ci 4.1 L
Bore/Stroke	4.00x5.00 inches 102 x 127 mm
Fuel system	Zenith K5A carburetor
Air cleaner	oil bath
Rated RPM	1250
Oil capacity	10 qts 9.5 L
Coolant capacity	20 qts 18.9 L

Transmission

Transmission — 3 forward and 1 reverse gear

Type	gear
Gears	3 forward and 1 reverse
Clutch	dry disc
Oil capacity	8 qts 7.6 L

Dimensions

Caterpillar Twenty-Two Tracks
Width	10 inches 25 cm
Length on ground	54.5 inches 138 cm
Area on ground	1090 in² 0.7 m²

Dimensions
Length	108 inches 274 cm
Width	57.75 inches (40" gauge) 146 cm
	67.75 inches (50" gauge) 172 cm
Height (hood)	56.125 inches 142 cm
Shipping weight	6,200 lbs (40" gauge) 2812 kg
	6,270 lbs (50" gauge) 2844 kg
Ground clearance	9 inches 22 cm
Clearance (drawbar)	10.5 inches 26 cm
Gauge	40 inches 101 cm
Gauge	50 inches 127 cm

Tests

Tractor Tests
NTTL 226: distillate 3-speed crawler
NTTL 228: gasoline 3-speed crawler

Nebraska Tractor Test 226
Distillate 3-speed crawler September 25 - October 9, 1934 Link: Nebraska Tractor Test 226 file
Belt power (max)	29.36 hp 21.9 kW
Belt fuel use (max)	3.0 gal/hour 11.4 l/hour
Drawbar performance
Max power	23.43 hp 17.5 kW
Gear 1 used for power test.
Max pull	4,534 lbs 2056 kg
Gear 1 used for pull test.

Nebraska Tractor Test 228
Gasoline 3-speed crawler October 17 - 30, 1934 Link: Nebraska Tractor Test 228 file
Belt power (max)	30.71 hp 22.9 kW
Belt fuel use (max)	3.3 gal/hour 12.5 l/hour
Drawbar performance
Max power	25.26 hp 18.8 kW
Gear 1 used for power test.
Max pull	4,900 lbs 2222 kg
Gear 1 used for pull test.

Photos

Caterpillar Twenty-Two

Caterpillar Twenty-Two

Caterpillar Twenty-Two

Caterpillar Twenty-Two operator station and controls.