2. The backing plate doubles as a caliper support and has the drum shoes already installed and ready to go. Well, not totally ready. Between both brake shoes on the bottom there is a brake adjuster that you'll have to set correctly using the rotor after the axleshaft is back in. For now, just set the backing plate on the four T-bolts, as the axleshaft's retainer plate has to slide onto these four bolts as well.