FDE Crawlers

[jeffrob]

I notice in various documentation that what is ostensibly referred to as an FDE, is sometimes called an FD. Does anyone know if there was a model called an FD, and if so, what was the difference between an FD and an FDE?

[Robert Barbour]

The FD started life in 1936 with a Hercules  DHX engine.  In 1938 the tractor was upgraded and the engine size increase to a DHXB engine.   In 1941 due to a shortage of Hercules engines the FDLC with a Cummins was made.  In 1945 it became the FDE with a Hercules DFXE engine. IT was made until 1952 and then the OC 18 came out.

[jeffrob]

Thanks Robert, your knowledge continues to astound me!