Caterpillar Tracked platform in chronological order

Caterpillar D4 '1946–????

 
Caterpillar D4 '1946–????
Caterpillar D4 '1946–????
 

Caterpillar HT4 Shovel Loader (35С) '12.1951–55

 
Caterpillar HT4 Shovel Loader (35С) '12.1951–55
 
 

Caterpillar D8 (13A) '1953–55

Caterpillar D8 (13A) '1953–55
Caterpillar D8 (13A) '1953–55
 
 

Caterpillar D9X Prototype '05.1954Produced in 10 copies

Caterpillar D9X Prototype '05.1954
 
 
 

Caterpillar D9 '1955

Caterpillar D9 '1955
Caterpillar D9 '1955
 
 

Caterpillar D8D '1955–56

Caterpillar D8E '1955–56

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WheelsAge.org '2005–pr.