Once again I have 1968 axle non posi The print shows two gaskets. I think one is metal (shim) and the other gasket material. Which gasket goes where? Does the metal gasket go against the axle housing and the material gasket go against the outside of the brake backing plate. I keep looking at the print but just can't make it out.
I would put the metal gasket against the surface that is the smoothest. Common sense would dictate that the gasket would go against the housing. They are just taking up space so it doesn't matter a whole lot.
The gasket is there to take up space because of the variances in trueness of the components. It's a little 'fudge factor' so the machining lines at the plants could 'open up' their tolerances.