Delco-Moraine Single Piston Caliper

Fig. 1 Typical exploded view of disc brake caliper assembly:

The caliper assembly, Fig. 1, slides on its mounting bolts. Upon brake application, fluid pressure against the piston forces the inboard shoe and lining assembly against the inboard side of the disc. This action causes the caliper assembly to slide until the outboard lining comes into contact with the disc. As pressure builds up, the linings are pressed against the disc with increased force.