Hy Noonan, a quick check of one of my parts books that covers up to the 55"B" series yielded your casting number as a part number for a new part for the 16 series and the 18 series (L.C.F.). I have one of these trucks, still partially assembled, kind of difficult to access at the moment. I will see how much of a hassle it will be to work on if the weather cooperates.
Ok thank you for all the help. I'm used to waiting for weather to cooperate

No rush there
Casting 3704482 was used from 1954-59 on the 1-1/2 ton and 1954-55 on 2-ton, BUT the flange for the wheel center hole could be 4-3/4" or 5-1/4".
The part number for the 4-3/4" flanged hub is 3704489.
The part number for the 5-1/4" flanged hub is 3704482.
Mike B

Edit...this is based on my US Parts Books...
Mike, thank you for the information. I forgot to confirm the wheel center hole when I was in the shop today, I will have to check that. It will most likely correspond with what your parts books are showing for the casting number.
Thanks again