Disc Brake System: Description and Operation

Front disc brake
The front disc brake system consists of a single piston, brake disc rotor, a floating front disc brake caliper assembly, shoes and linings. The front disc brake caliper is mounted directly to the steering knuckle, using boots, sleeves, and 2 sleeve bolts which thread directly into the steering knuckle. The sleeve bolts, sleeves and sleeve boots control the side to side movement of the caliper. The piston seal is designed to assist in maintaining the proper brake shoe to rotor clearance. All the front brake forces generated during braking of the vehicle are taken up directly by the steering knuckles of vehicle. The molded rubber dust boots mount in a counter bore of the cylinder bore opening and in a groove that is machined in the outer surface of the piston. This prevents contamination of the piston and the bore area. As lining wears, reservoir level will go down. If fluid has been added, reservoir overflow may occur when the piston is pushed back into the new lining position. Overflowing can be avoided by removing a small amount of fluid from the master cylinder reservoir.