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Years in Production / 1935–1940
Caterpillar
RD4
Explore the specifications, hardware, and original references for the Caterpillar RD4.
No photo
44hp
Engine estimate · from belt
Tracks
Drive
1935–1940
Production years
Caterpillar
Manufacturer
RD4 / 01
At a glance
Production
Agricultural Crawler tractor
Built in Peoria, Illinois, USA
- Manufacturer
- Caterpillar
Mechanical
Open operator station.
- Drive
- crawler
RD4 / 02
Under the hood
Engine Detail
Caterpillar
diesel
4-cylinder
liquid-cooled
- Displacement
- 312.1 ci5.1 L
- Bore Stroke
- 4.25x5.50 inches108 x 140 mm
- Rated Rpm
- 1400
- Fuel Type
- diesel
- Cylinders
- 4
- Cooling
- liquid-cooled
RD4 / 03
Gears & controls
Transmission
- Transmission Type
- gear
- Gears
- 5 forward and 1 reverse
- Clutch
- dry disc
RD4 / 04
Tests (NTTL)
Nebraska Tractor Test 273
Diesel 5-speed crawlerOctober 14 - 28, 1936
Drawbar performance
Gear 2 used for power test.
Gear 1 used for pull test.
- Id
- 273
- Belt Power Max
- 39.82 hp29.7 kW
- Belt Fuel Use Max
- 2.9 gal/hour11.0 l/hour
- Max Power
- 35.06 hp26.1 kW
- Max Pull
- 7852 lbs3561 kg