1958-440,001 thru 444,127
1959-444,128 thru 453,872
1960-453,873 thru 461,929
The 440ICD was introduced at serial number 448,001, and at this time the gas engine recieved an increase in power of 10% to make the gas engine crawlers more comparable to the diesel crawlers. At this time, the size of the transmission was increased to handle the additional horsepower.
Production figures:
440IC-9855
440ICD-6679
Total-16,534
440IC serial number 461,929 was the last two-cylinder gasoline tractor produced at the Dubuque works.
Lavoy
440 crawler serial numbers and production figures
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