I think Sweet is correct. My '51 also has the spacers. I'll bet if you installed the bearings and brake drum, there would be a substantial gap between the drum and the backing plate, possibly even exposing part of the brake shoes.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.