Caterpillar D4

Caterpillar D4
	; A tidy Caterpillar D4D fitted with cab and 3-point linkage. Exhibited at Lincolnshire Steam and Vintage Rally 2008
Model history
Model introduced	1938
Model discontinued	Unknown
Model status	Unknown
Preceded by	Caterpillar RD4
Engine Specification
Engine make	Caterpillar
Fuel type	Diesel
Power hp	Unknown
Cooling system	Water
Transmission Details
Transmission type	Unknown
Drive	tracked
Linkage Category	Unknown
Other info
Plow rating	Unknown
Web site	http://www.caterpillar.com/
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Cat D4 with winch at Neath 2012 - IMG 7940 — At Neath 2012

The Caterpillar D4 track-type series 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[]

Caterpillar RD4 - 1936-39 when re-designated D4 but still with Cat D4400 engine. s/n = 4G, 7J, 2T, 5T
Caterpillar D4 - 1947-59 6U (44 inch) + 7U (60 inch) Cat D315 engine approximately 60,000 built.
Caterpillar D4B
Caterpillar D4C - 1987-90 1RJ - D4C II 1990-93 83J - D4C III (82 hp)
Caterpillar D4D - see table below
Caterpillar D4E - 27x/28x new ROPS Cab added
Caterpillar D4G
Caterpillar D4H
Caterpillar 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
7R 1045	France	1970 - 1977
18J 371	France	1966 - 1968
20J 557	USA	1967 - 1968
22C 655	USA	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	USA	1963 - 1968
82J 4864	USA	1968 - 1977
83J 4169	USA	1968 - 1977
84J 2521	USA	1968 - 1978
85A 1043	Australia	1963 - 1969
86A 3589	France	1964 - 1968
88A 1124	England	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 tons, are reasonably transportable.

please list known examples here;

List of Preserved *Caterpillar D4* tractors (all series)
view • talk • edit
Make + Model No.	Serial No. (if known)	Build-Date	Engine-Type/Make	Owner (if known)	Were seen/Featured in	Other info
Cat D4	sn ?	year ?	engine ?	J. Foster	At Tractor World Show - Malvern 2009	Immaculate restoration
Cat D4	sn 5b 3758	year ?	Engine ?	owner ?	At Neath Vintage Show 2012	Fitted with ? Winch
Cat D4	sn 7U 36870 / (LDO 753)	year ?	Engine ?	owner ?	At Newark Vintage Tractor Show 2012	Road registered
Cat D4D (ag spec)	sn ?	year ?	Engine ?	owner ?	At Lincolnshire Steam and Vintage Rally 2008	Fitted with Three-point Linkage
Cat D4D (ag spec)	Caterpillar D4D sn 44H15833	year ?	Engine ?	Paul ?	At Gamston Working Weekend 2011	Fitted with Hydraulics & a Westlode Engineering cab
Cat D4D bulldozer	sn 59J 779	year ?	Engine ?	owner ?	At East Midlands Vintage Working Weekend 2011	Fitted with Bulldozer blade
Cat D4E bulldozer	sn ?	year ?	Engine ?	owner ?	At East Midlands Vintage Working Weekend 2011	Fitted with Bulldozer blade


Please add any tractor with a known serial no. with Photo if possible.
Create a page (link) for an individual tractor by linking the serial number using serial number in the relevant column. Then once saved click the red link to start the new page and add info on that tractor.