caterpillar r4

Caterpillar R4 tractor photo
1938 - 1944 Agricultural Crawler tractor
1938 - 1944
Agricultural Crawler tractor
1938 - 1944
Agricultural Crawler tractor
1938 - 1944
Agricultural Crawler tractor
Nebraska Tractor Test 272
R4 fuel use from test 272
R4 fuel use from test 272
R4 fuel use from test 272
R4 fuel use from test 272
Nebraska Tractor Test 272
Distillate 5-speed crawler October 13 - 24, 1936 Link: Nebraska Tractor Test 272 file
Belt power (max)
36.37 hp 27.1 kW
Drawbar performance
Max power
30.88 hp 23.0 kW
Gear 2 used for power test.
Max pull
6120 lbs 2776 kg
Gear 1 used for pull test.

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