R2 by Caterpillar

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

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

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

Mechanical

Mechanical Chassis:crawler
Cab:Open operator station.
Transmissions:3-speed gear
 5-speed gear
Transmission details ...

1934 - 1942

1934 - 1942
Agricultural Crawler tractor

Transmissions overview

Transmissions overview
3-speed gear
5-speed gear

Transmission

Transmission
Type:gear
Gears:3 forward and 1 reverse
The three-speed was used on the 5E version, built in limited quantities until 1938.

Speeds

Speeds

Transmission

Transmission
Type:gear
Gears:5 forward and 1 reverse
Oil capacity:8 qts
7.6 L
The five speed transmission was used on the R-2 4J and R-2 6J.

Speeds

Speeds

Dimensions & Tracks

Dimensions & Tracks Weight:6350 lbs
2880 kg
13-inch tracks Full dimensions and tracks ...

1934 - 1942

1934 - 1942
Agricultural Crawler tractor

Caterpillar R2 Tracks

Caterpillar R2 Tracks
Size:13-inch tracks

Dimensions

Dimensions
Shiping weight:6350 lbs
2880 kg
Gauge:40 inches
101 cm
Gauge:50 inches
127 cm

R2 Serial Numbers

R2 Serial Numbers Location:Serial number plate on the left side of the R-2 engine, below the rear spark plug.
photo of R2 serial number

Belt Pulley

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

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