Caterpillar D2 Specs ( 1938-1957 )
Overview
The Caterpillar D2 is an agricultural crawler tractor manufactured in Peoria, Illinois, from 1938 to 1957. It features a five-speed gear transmission and was equipped with either a 3.6L or 4.1L four-cylinder diesel engine utilizing a gasoline pony motor for starting. Physical specifications include a total length of 108 inches and weights ranging from 7,420 to 8,536 pounds depending on the configuration.
Ideal Applications
Tested Power Output:
According to Nebraska Tractor Test 553, the unit achieved a maximum belt power of 41.86 hp and a maximum drawbar pull of 7,413 lbs when equipped with the 252 diesel engine.
Mechanical Drive Configuration:
The tractor utilizes a crawler drive system with 12-inch wide tracks, mechanical steering clutches, and a gear transmission providing five forward speeds and one reverse speed.
Chassis and Gauge Dimensions:
The D2 was produced with track gauge options of either 40 inches or 50 inches, maintaining a standard height of 57.5 inches and a length of 108 inches.
Production
| Description | Agricultural Crawler tractor / Built in Peoria, Illinois, USA |
|---|---|
| Manufacturer | Caterpillar |
Engine
| Engine type | Caterpillar 3.6L 4-cyl diesel / Caterpillar 4.1L 4-cyl diesel |
|---|---|
| Bore/Stroke | 3.75x5.00 inches (95 x 127 mm) / 4.00x5.00 inches (102 x 127 mm) |
| Compression | 18.5:1 |
| Description | Caterpillar / diesel / 4-cylinder / liquid-cooled / Caterpillar / diesel / 4-cylinder / liquid-cooled |
| Displacement | 221 ci (3.6 L) / 252 ci (4.1 L) |
| Rated RPM | 1525 / 1525 (early) |
| Starter type | gasoline pony motor |
| Torque | 125 lb-ft (169.5 Nm) |
| Torque RPM | 1050 |
| Engine type | Caterpillar 3.6L 4-cyl diesel / Caterpillar 4.1L 4-cyl diesel |
| Belt (tested) | 41.86 hp (31.2 kW) |
| Drawbar (tested) | 36.62 hp (27.3 kW) |
| PTO (tested) | 32.9 hp (24.5 kW) |
Transmission
| Clutch | dry disc |
|---|---|
| Gears | 5 forward and 1 reverse |
| Transmission type | 5-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
| Steering | mechanical clutches |
Dimensions & Tires
| Gauge | 40 inches (101 cm) / 50 inches (127 cm) |
|---|---|
| Height | 57.5 inches (146 cm) |
| Length | 108 inches (274 cm) |
| Weight | 7420 lbs (1939) (3365 kg) |
Caterpillar D2 Tracks
| Width | 12 inches (30 cm) |
|---|
Dimensions & Tracks
| Description | 12-inch tracks |
|---|---|
| Weight | 7420 to 8536 pounds |
Nebraska Tractor Test 322
| Belt power (max) | 30 hp (22.4 kW) |
|---|---|
| Description | 251 diesel 5-speed crawlerJuly 24 - August 4, 1939Link: Nebraska Tractor Test 322 file / PTO performance / Drawbar performance / Gear 1 used for power test. |
| Fuel use | 2.1 gal/hour (7.9 l/hour) |
| Max power | 25.2 hp (18.8 kW) |
| Max pull | 5,903 lbs (2677 kg) |
| Power at rated engine speed | 27.5 hp (20.5 kW) |
Nebraska Tractor Test 418
| Belt power (max) | 36.02 hp (26.9 kW) |
|---|---|
| Description | 252 diesel 5-speed crawlerJuly 11 - 26, 1949Link: Nebraska Tractor Test 418 file / PTO performance / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Fuel use | 2.4 gal/hour (9.1 l/hour) |
| Max power | 30.31 hp (22.6 kW) |
| Max pull | 6,778 lbs (3074 kg) |
| Power at rated engine speed | 32.9 hp (24.5 kW) |
Nebraska Tractor Test 553
| Belt power (max) | 41.86 hp (31.2 kW) |
|---|---|
| Description | 252 diesel 5-speed crawlerJuly 25 - 30, 1955Link: Nebraska Tractor Test 553 file / PTO performance / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Fuel use | 2.7 gal/hour (10.2 l/hour) |
| Max power | 36.62 hp (27.3 kW) |
| Max pull | 7,413 lbs (3362 kg) |
| Power at rated engine speed | 29 hp (21.6 kW) |
References
| Description | Product Line published in 1953, by Caterpillar / Owner's report: on Caterpillar Farm Tractors published in 1949 / Built for the farm published in 1954, by Caterpillar / Easier, More Profitable Farming published by Caterpillar / Farming on the contour published in 1954, by Caterpillar / Diesel D2 Tractor published by Caterpillar |
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Tractor Tests
| Description | NTTL 322: 251 diesel 5-speed crawler / NTTL 418: 252 diesel 5-speed crawler / NTTL 553: 252 diesel 5-speed crawler |
|---|