Since the last locomotive built with new cab units was 179LABC,
higher numbered FT's from 180 through 199C and 400 through 430B
were all renumbered from lower numbered units. The primary reason
for renumbering many of the FT's again after all the trouble it
had been to get most of them into A-B-B-A sets was because the railroad
desired to move many of them to other parts of the system after
the completion of their World War II duties. War demands had kept
most of them on the western end of the system for the most part
and the new assignments often did not require full four-unit locomotives.
So, the 100 class was again largely renumbered for reassignments.
Most of the renumbered FTA's were from units 105C through 179C
although not all of these "C" units were renumbered. Most
of the locomotive sets numbered 180 through 199 that were created
by this renumbering were of A-B-B configuration, but some were A-B-A.
This was probably influenced by where the locomotives were to be
assigned.
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