Caterpillar D4
Encyclopedia
The Caterpillar D4 track-type
tractor
is a small bulldozer
manufactured by Caterpillar Inc.
Caterpillar first introduced the RD4 in 1936 as the diesel follow on to the successful CAT 30 gas model. The RD4 originally weighed in at 10,000 pounds, and used Caterpillar's D4400 engine, an inline four-cylinders, with a 4.25x5.50 inch bore and stroke. In 1935 Caterpillar had started the naming convention of "RD" for diesel or "R" for regular gasoline, followed by a number to indicate the relative engine size. In 1937 the "R" was dropped, and just a "D" was used for the diesel versions. At the time of introduction of the RD4, the D4400 engine produced about 43HP at the drawbar so the 4 indicated the relative engine power. The D4 U series was fitted with the more powerful D315 engine. The later D4 series engines quickly increased in power, so the number "4" just became a figure of merit rather than indicating actual engine power.
shovel.
Caterpillar track
Continuous tracks or caterpillar tracks are a system of vehicle propulsion in which modular metal plates linked into a continuous band are driven by two or more wheels...
tractor
Tractor
A tractor is a vehicle specifically designed to deliver a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture or construction...
is a small bulldozer
Bulldozer
A bulldozer is a crawler equipped with a substantial metal plate used to push large quantities of soil, sand, rubble, etc., during construction work and typically equipped at the rear with a claw-like device to loosen densely-compacted materials.Bulldozers can be found on a wide range of sites,...
manufactured by Caterpillar Inc.
Caterpillar Inc.
Caterpillar Inc. , also known as "CAT", designs, manufactures, markets and sells machinery and engines and sells financial products and insurance to customers via a worldwide dealer network. Caterpillar is the world's largest manufacturer of construction and mining equipment, diesel and natural gas...
Caterpillar first introduced the RD4 in 1936 as the diesel follow on to the successful CAT 30 gas model. The RD4 originally weighed in at 10,000 pounds, and used Caterpillar's D4400 engine, an inline four-cylinders, with a 4.25x5.50 inch bore and stroke. In 1935 Caterpillar had started the naming convention of "RD" for diesel or "R" for regular gasoline, followed by a number to indicate the relative engine size. In 1937 the "R" was dropped, and just a "D" was used for the diesel versions. At the time of introduction of the RD4, the D4400 engine produced about 43HP at the drawbar so the 4 indicated the relative engine power. The D4 U series was fitted with the more powerful D315 engine. The later D4 series engines quickly increased in power, so the number "4" just became a figure of merit rather than indicating actual engine power.
Version details
- 6U = Narrow gauge 44"
- 7U = Wide Gauge 60"
- Caterpillar RD4 - 1936-37 (4G) with 4 cylinder D4400 engine
- Caterpillar D4 - 1937-39 (4G) with 4 cylinder D4400 engine
- Caterpillar D4 - 1939-43 (7J) with 4 cylinder D4400 engine
- Caterpillar D4 - 1943-45 (2T) with 4 cylinder D4400 engine
- Caterpillar D4 - 1945-47 (5T) with 4 cylinder D4400 engine
- Caterpillar D4 - 1947-59 6U1 > 6U12781, 7U1-7U44307 Cat 4 cylinder D315 engine.
- Caterpillar D4C - 1959-63
- Caterpillar D4D - 1963-77
- Caterpillar D4E - 1977-84
- Caterpillar D4H - 1985-96
- Caterpillar D4C SII -1990-93
- Caterpillar D4C SIII - 1993
Tracked shovels
The Caterpillar D4 was used as the base tractor for the Trackson built loader that was known as the T4 or TraxcavatorTraxcavator
Traxcavator was a namebrand of the Trackson Company of Milwaukee, Wisconsin. The word "Traxcavator" came from combining "tractor" and "excavator".- Overview :...
shovel.
See also
- Caterpillar D6Caterpillar D6The Caterpillar D6 track-type tractor is a medium bulldozer manufactured by Caterpillar Inc. with a nominal operating weight of 18 tons. The military versions were classified as the SNL G152 medium tractor, under the G-numbers classification system used for army tractors.-D6 Version history:The D6...
- Caterpillar D8Caterpillar D8The Caterpillar D8 is a large track-type tractor designed and manufactured by Caterpillar.Though it comes in many configurations it is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.-History:...
- Caterpillar D10Caterpillar D10The Caterpillar D10 is a track-type tractor manufactured by Caterpillar Inc. . It was the first modern tractor to use the elevated drive sprocket to improve durability, operator comfort, and ease of maintenance....
- Caterpillar D11Caterpillar D11The Caterpillar D11 is a large bulldozer, manufactured by Caterpillar Inc. in East Peoria, Illinois, and mainly used in the mining industry. Primarily designed as a bulldozer, it also used for push-loading scrapers, and ripping rock overburden.-D11N:...
- G-numbers Army cats.
- TM 9-2800 military vehicles
- SNL G151 light tractor