Quote:
Originally Posted by harveyrv
If your old brake shoes were worn out, the drums were surely glazed to some extent.
It is always best to machine the drum surfaces to remove all glazing and rough up the surface to facilitate the "wearing-in" process of the new shoes. As the shoes contact the roughed-up surface, they develop a wear pattern to the exact contour of the drum. If the drum surface is smooth, the brake lining will bot wear-in properly.
If you did not at least sand the drums with 80-100G sand paper, you may want to consider doing that (I would recommend sanding the new shoes also and check them for cracks). If you don't, it may take a long time to wear in the shoes.
The magnet surface of the drum should also be sanded.
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I am going to ask a question about drum brakes. It might, or might not, bring out some more information on this topic.
When I was a youngster, my family had a series of "Shoebox" Fords. Those are the 49-51 series cars. They had drum brakes all around. We did most of our own work on those cars, including brakes.
When we replaced the brake shoes my dad taught us to take a flat file and file off the corners and file off the sharp angle at the edges of the brake material all the way around the shoes.
He believed that this would help the brakes to "seat in" and would prevent the new shoes from causing noise. I kept on doing this up through my '61 Ford p/u. Don't really know if it helped or harmed.
Anyone ever heard of this? Any thoughts?
Tom