I posted the other day due to my lack of knowledge about removing the inner dual and the double cap nut lugs. Thanks again to those that responded. I was able to get the wheel off. I got in the drum and rebuilt the wheel cylinder. To no avail, I now need to rebuild the master cylinder. It's oozing brake juice out the front of it at a pretty good rate. I haven't pulled it yet. It appears that it will be a chore to get off. That's not my concern. Does anyone have a picture of the parts breakdown? How about a part number for a rebuild kit? A quick Google search doesn't seem to get me anywhere. My local Carquest books only go up to F4. Thanks in advance!

 

The F2-F6 master cylinders are the same. Years ago the Wagner Lockheed part number for the kit was 1. Rock Auto has 3 brands of new MC and one rebuilt.
Mark

 

B9J-2004-A .. Master Cylinder Rebuild Kit / Obsolete

1948/52 F2/F6 & F5/F6 COE & F3/F5 Parcel Delivery / 1953/56 F250/600 & C500/600 Cab Forward / 1953/60 P350/500 (P = Parcel Delivery).

1961/66 P350/400 / 1961/72 P500 / 1973/77 P500 w/Power Brakes.

CARPENTER NOS OBSOLETE PARTS in Concord NC has 5 = 800-476-9653.

 

ebay sell the whole thing for $105 thats the road i'm taking
good luck mate
https://www.ebay.com.au/itm/1939-195...53.m1438.l2649