Disc Brake System: Description and Operation

Fig. 1 Cross-sectional View Of Disc Brake Assembly:

This sliding caliper single piston system uses a one or two piece hub and is actuated by the hydraulic system and disc assembly.

Fig. 2 Caliper Mounted Ways & Assembly Retention:

Alignment and positioning of the caliper is achieved by two machined guides on the adapter, while caliper retaining clips allow lateral movement of the caliper.

Fig. 3 Outboard Pad Retaining Flange Orientation:

Fig. 4 Inboard Pad Replacement:

Outboard pad flanges are used to position and locate the pad on the caliper fingers, while the inboard pad is retained by the adapter. Braking force applied onto the outboard pad is transferred to the caliper, while braking force applied onto the inboard pad is transferred directly to the adapter.

A square cut piston seal provides a hydraulic seal between the piston and the cylinder bore. A dust boot with a wiping lip installed in a groove in the cylinder bore and piston prevents contamination in the piston and cylinder bore area. Adjustment between the disc and the pad is obtained automatically by the outward relocation of the piston as the inboard lining wears and inward movement of the caliper as the outboard lining wears.