When you change the shoes remember to inspect the backing plate pads for any grooves. When assembling the brakes put a thin film of anti-seize on each of the 6 backing plate pads. Not much and don't get it on the brake pad surface.
1947.2 GMC 1/2T SWB panel 1947.2 GMC 1/2T long bed 1948 GMC 1/2T short bed