1938 - 1957 |
Agricultural Crawler tractor |
Nebraska Tractor Test 322 | |||
|
Nebraska Tractor Test 322 | |
251 diesel 5-speed crawler July 24 - August 4, 1939 Link: Nebraska Tractor Test 322 file | |
Belt power (max): | 30 hp 22.4 kW |
PTO performance | |
Power at rated engine speed: | 27.5 hp 20.5 kW |
Fuel use: | 2.1 gal/hour 7.9 l/hour |
Drawbar performance | |
Max power: | 25.2 hp 18.8 kW |
Gear 1 used for power test. | |
Max pull: | 5,903 lbs 2677 kg |
Nebraska Tractor Test 418 | |||
|
Nebraska Tractor Test 418 | |
252 diesel 5-speed crawler July 11 - 26, 1949 Link: Nebraska Tractor Test 418 file | |
Belt power (max): | 36.02 hp 26.9 kW |
PTO performance | |
Power at rated engine speed: | 32.9 hp 24.5 kW |
Fuel use: | 2.4 gal/hour 9.1 l/hour |
Drawbar performance | |
Max power: | 30.31 hp 22.6 kW |
Gear 2 used for power test. | |
Max pull: | 6,778 lbs 3074 kg |
Gear 1 used for pull test. |
Nebraska Tractor Test 553 | |||
|
Nebraska Tractor Test 553 | |
252 diesel 5-speed crawler July 25 - 30, 1955 Link: Nebraska Tractor Test 553 file | |
Belt power (max): | 41.86 hp 31.2 kW |
PTO performance | |
Power at rated engine speed: | 29 hp 21.6 kW |
Fuel use: | 2.7 gal/hour 10.2 l/hour |
Drawbar performance | |
Max power: | 36.62 hp 27.3 kW |
Gear 2 used for power test. | |
Max pull: | 7,413 lbs 3362 kg |
Gear 1 used for pull test. |
1938 - 1957 |
Agricultural Crawler tractor |
Engines overview | |
Caterpillar 3.6L 4-cyl diesel | |
Caterpillar 4.1L 4-cyl diesel |
Engine Detail | |
Caterpillar | |
diesel | |
4-cylinder | |
liquid-cooled | |
Displacement: | 221 ci 3.6 L |
Bore/Stroke: | 3.75x5.00 inches 95 x 127 mm |
Rated RPM: | 1525 |
Torque: | 125 lb-ft 169.5 Nm |
Torque RPM: | 1050 |
Engine Detail | |
Caterpillar | |
diesel | |
4-cylinder | |
liquid-cooled | |
Displacement: | 252 ci 4.1 L |
Bore/Stroke: | 4.00x5.00 inches 102 x 127 mm |
Compression: | 18.5:1 |
Rated RPM: | 1525 (early) |
1650 (late) | |
Starter type: | gasoline pony motor |
1938 - 1957 |
Agricultural Crawler tractor |
Transmission | |
Type: | gear |
Gears: | 5 forward and 1 reverse |
Clutch: | dry disc |
Speeds | |
1938 - 1957 |
Agricultural Crawler tractor |
Caterpillar D2 Tracks | |
Size: | 12-inch tracks |
Dimensions | |
Length: | 108 inches 274 cm |
Height: | 57.5 inches 146 cm |
Weight: | 7420 lbs 3365 kg (1939) |
8536 lbs 3871 kg (1955) | |
Gauge: | 40 inches 101 cm |
Gauge: | 50 inches 127 cm |