Skip to content
An independent tractor referenceSpecifications. Sources. Side by side.
TractorStack.
Search
Find your tractor.
Menu ☰
Years in Production / 1938–1944
Caterpillar
R4
Explore the specifications, hardware, and original references for the Caterpillar R4.
No photo
40hp
Engine estimate · from belt
Tracks
Drive
1938–1944
Production years
Caterpillar
Manufacturer
R4 / 01
At a glance
Production
Agricultural Crawler tractor
Built in Peoria, Illinois, USA
The Caterpillar R4 was a continuation of the model Thirty.
- Manufacturer
- Caterpillar
Mechanical
Open operator station.
- Drive
- crawler
R4 / 02
Under the hood
Engine Detail
Caterpillar
gasoline
4-cylinder
liquid-cooled
- Displacement
- 461 ci7.6 L
- Bore Stroke
- 4.75x6.50 inches121 x 165 mm
- Rated Rpm
- 1400
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled
R4 / 03
Gears & controls
Transmission
- Transmission Type
- gear
- Gears
- 5 forward and 1 reverse
R4 / 04
Tests (NTTL)
Nebraska Tractor Test 272
Distillate 5-speed crawlerOctober 13 - 24, 1936
Drawbar performance
Gear 2 used for power test.
Gear 1 used for pull test.
- Id
- 272
- Belt Power Max
- 36.37 hp27.1 kW
- Max Power
- 30.88 hp23.0 kW
- Max Pull
- 6120 lbs2776 kg