Brake identification

[Daniel f]

My Model A was converted to Hydraulic brakes in the 1970s I need to service and replace the rear drums and I need help identifying what they are? Please help ID

 

[1931 flamingo]

40-48.
Paul in CT

 

[Bob C]

1939-42 backing plates.

 

[Jim Brierley]

Any 1940-48 drum will work for you. They may not have the same outside shape, but will directly interchange. You should have a tin gizmo to capture any grease slung off the wheel brgs. and keep it off the linings, not important unless there is a leak. Early drums like these are still safe with as much as .125" over-sized. If you are running wire wheels, you also need a wheel adapter as hyd. drums have a flat surface for the wheels to mount against, Ford wire wheels have a step in them. Good luck!