jorb,

I am not yet well-versed in dealing with the 1954 H-M transmission maintenance. Here are the only references to the oil screen that I can find (might that be the filter?).

Can you post a link to documentation that refers to the 5 micron oil filter?

http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm0763.html
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm07104.html

I have not yet unpacked my H-M parts manual (moved from NY to NC). I'll be away from NC for a week, but, if I remember I'll check that manual when I unpack boxes of truck manuals.