Caterpillar R2 tractor specifications

1934 - 1942

1934 - 1942 Agricultural Crawler tractor

Production

Production Manufacturer:Caterpillar
Type:Agricultural Crawler tractor
Factory:Peoria, Illinois, USA
Total built:2418 (total)
83 (5E)
1185 (4J)
1150 (6J)

Caterpillar R2 Power

Caterpillar R2 Power Drawbar (tested):27.15 hp
20.2 kW
Belt (tested):32.47 hp
24.2 kW
power test details ...

1934 - 1942

Agricultural Crawler tractor

Nebraska Tractor Test 225

Nebraska Tractor Test 225
4.1L gasoline 3-speed crawler September 24 - October 16, 1934 Link: Nebraska Tractor Test 225 file
Belt power (max):	32.47 hp 24.2 kW
Belt fuel use (max):	3.7 gal/hour 14.0 l/hour
Drawbar performance
Max power:	27.15 hp 20.2 kW
Max pull:	5274 lbs 2392 kg

Nebraska Tractor Test 320

Nebraska Tractor Test 320
3.6L gasoline 5-speed crawler 1939 Link: Nebraska Tractor Test 320 file
Belt power (max):	29.31 hp 21.9 kW
Belt fuel use (max):	3.6 gal/hour 13.6 l/hour
Drawbar performance
Max power:	23.46 hp 17.5 kW
Gear 2 used for power test.
Max pull:	5676 lbs 2574 kg
Gear 1 used for pull test.

Caterpillar R2 Engines

Caterpillar R2 Engines Caterpillar 4.1L 4-cyl gasoline Caterpillar 3.6L 4-cyl gasoline Fuel tank:20 gal
75.7 L
Engine details ...

1934 - 1942

Agricultural Crawler tractor

Engines overview

Engines overview
Caterpillar 4.1L 4-cyl gasoline
Caterpillar 3.6L 4-cyl gasoline

Engine Detail

Engine Detail
Caterpillar
gasoline
4-cylinder
liquid-cooled
Original engine, used on the 5E version.
Displacement:	251 ci 4.1 L
Bore/Stroke:	4.00x5.00 inches 102 x 127 mm
Air cleaner:	oil bath
Rated RPM:	950

Engine Detail

Engine Detail
Caterpillar 3400G
gasoline
4-cylinder
liquid-cooled
The 3400G was used on the 4J and 6J versions, which were most R-2 tractors built.
Displacement:	221 ci 3.6 L
Bore/Stroke:	3.75x5.00 inches 95 x 127 mm
Air cleaner:	oil bath
Rated RPM:	1525
Oil capacity:	12 qts 11.4 L
Coolant capacity:	28 qts 26.5 L