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(Model range: add s/n build details)
(Model range: add table)
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==Model range==
 
==Model range==
* Cat RD4 1936-39 when re-designated D4 but still with [[Cat D4400]] engine
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* Cat RD4 - 1936-39 when re-designated D4 but still with [[Cat D4400]] engine. s/n = 4G, 7J, 2T, 5T
D4 6U + 7U - 1947-59 [[Cat D315]] engine approximately 60,000 built.
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* Cat D4 - 1947-59 6U (44 inch) + 7U (60 inch) [[Cat D315]] engine approximately 60,000 built.
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* Cat D4B
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* Cat D4C
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* Cat D4D
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* Cat D4E
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* Cat D4G
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* Cat D4H
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* Cat D4K
   
 
The D4 was built in many plants around the world.(I managed to find the following info regarding the serial no. prefixes for D4Ds, they surely did make them all over the place) <ref>http://www.classicmachinery.net/forum/viewtopic.php?p=16052#p16052 Posted by RichardJW on CMN </ref>
 
The D4 was built in many plants around the world.(I managed to find the following info regarding the serial no. prefixes for D4Ds, they surely did make them all over the place) <ref>http://www.classicmachinery.net/forum/viewtopic.php?p=16052#p16052 Posted by RichardJW on CMN </ref>

Revision as of 02:02, February 1, 2009

The Caterpillar D4 track-type tractor is a small bulldozer manufactured by Caterpillar Inc.. It replaced the Caterpillar RD4 4G series.

History

Caterpillar first introduced the D4 in 1938 as the diesel follow on to the successful CAT 30 gas model.[1] In 1935 Caterpillar started the naming convention of 'D' for diesel or 'R' for regular gas followed by a number to indicate the relative size.[2] At the time of introduction the D4 engine produced about 40HP so the 4 indicated the relative engine power. The D4 series engines quickly increased in power so the numbers just became a figure of merit rather than indicating actual engine power.

Model range

  • Cat RD4 - 1936-39 when re-designated D4 but still with Cat D4400 engine. s/n = 4G, 7J, 2T, 5T
  • Cat D4 - 1947-59 6U (44 inch) + 7U (60 inch) Cat D315 engine approximately 60,000 built.
  • Cat D4B
  • Cat D4C
  • Cat D4D
  • Cat D4E
  • Cat D4G
  • Cat D4H
  • Cat D4K

The D4 was built in many plants around the world.(I managed to find the following info regarding the serial no. prefixes for D4Ds, they surely did make them all over the place) [3]

Cat D4D Build details
Serial Number group Build Locality Date Produced from to Notes
7R 1045 France 1970 - 1977
18J 371 France 1966 - 1968
20J 557 U.S.A 1967 - 1968
22C 655 U.S.A 1967 - 1968
44H 1703 France 1970 - 1978
47H 811 Japan 1971 - 1978
49J 769 Australia 1969 - 1973
58J 603 France 1968 - 1969
59J 2725 France 1969 - 1978
60J 6008 France 1968 - 1978
61J 928 France 1968 - 1978
65J 2112 France 1969 - 1978
66J 4255 Japan 1968 - 1978
67A 1575 Japan 1966 - 1969
69K 480 Australia 1969 - 1972
74U 1203 Brazil 1976 - 1979
78A 7845 U.S.A 1963 - 1968
82J 4864 U.S.A 1968 - 1977
83J 4169 U.S.A 1968 - 1977
84J 2521 U.S.A 1968 - 1978
85A 1043 Australia 1963 - 1969
86A 3589 France 1964 - 1968
88A 1124 U.K 1964 - 1968
91A 1149 Japan 1966 - 1969
97F 4446 Brazil 1970 - 1979

Preservation examples

The D4 is a popular model for collectors as they were relatively common as a medium farm crawler tractor. and at about 5 ton are reasonably transportable.

See also

References

  1. http://www.tractordata.com/td/002/td2982.html
  2. http://www.aghistory.org/cgi-bin/default.asp?AID=168
  3. http://www.classicmachinery.net/forum/viewtopic.php?p=16052#p16052 Posted by RichardJW on CMN
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