General question regarding drum brakes, rotors, and hubs 71 valiant
Here is a pic to show what I am referring to.
View attachment 1715190347
I understood that those two objects were supposed to be firmly pressed together with the wheel studs, but if it's ok if the hub can come off the drum then I am relieved. This car needs to be running sooner rather than later because the new semester is coming.
no sir, they do NOT need to be pressed together
the shiney bolt looking things (and im sorry if i sound condescending, i dont know how much you know, so im trying to make it as simple as possible) are called wheel studs and they need to be pressed into the hub, which they are are
now, the drum (the really big part laying face down on the table or washer or whatever it is) doesnt need to be pressed onto anything
in fact, when you put the wheel back on there, the brake drum will be sandwiched in between the wheel and the hub and held tightly in place by the five lugnuts
it is not going anywhere
now, here is where the rub is, see the little edges going up the shaft of the wheel studs?
(that is called knurling, by the way)
those grooves are what hold the studs tightly in the hub, and keeps them from spinning as you try to tighten the lugnuts
now, see how far that knurling is sticking out passed the face of the hub?
when you install that drum, and the wheel, the tightening of the lugnuts will force the drum down onto that knurling and will most likely cause it to get "pressed" unto it.
so, having said all that, there is nothing to worry about here BUT if it was my car, i would drill the holes in drum out a little to make sure the knurling clears the drum, or you will have a bear of a time pulling those drums back off next time you inspect your brake shoes
(look at the very center hole of the drum, see how that has a slight bevel to it?
that bevel will sit nicely on the collar of the hub, and will center on it, and because of that, the holes for the wheel studs can be a little bigger)
