REAR BRAKE


  1. CONSTRUCTION


    1. Built-in Type Disc Brake


      1. The built-in type rear disk brake cylinder assembly is comprised of a cylinder, piston assembly and actuator assembly, and has a built-in parking mechanism.

        Figure 1. Models with Torsion-beam Type Suspension

        A00XRK8C01
        *1 Piston Assembly *2 Cylinder
        *3 Actuator Assembly - -
        *a A-A Cross Section - -

        Figure 2. Models with Double-wishbone Type Suspension

        A00XRLUC01
        *1 Piston Assembly *2 Cylinder
        *3 Actuator Assembly - -
        *a A-A Cross Section - -

  2. OPERATION


    1. Built-in Type Disc Brake


      1. When the parking brake lever is operated, the crank lever and the input shaft (actuator assembly) that is connected to the crank lever rotate via the parking brake cable.

      2. At the same time, the input shaft slides the push rod through the movement of the check ball.

      3. The nut sleeve in the piston that is connected to the push rod also slides, pushing out the piston and disc pad to generate braking force.

        A00XRFWC01
        *1 Disc Pad *2 Nut Sleeve
        *3 Push Rod *4 Check Ball
        *5 Crank Lever *6 Disc Rotor
        *7 Input Shaft - -

      4. When the brake pad is worn and the clearance between the disc pad and disc rotor reaches a predetermined level, auto adjust operation is performed through hydraulic pressure when the brake pedal is operated.

      5. The piston slides until the disc pad makes contact with the disc rotor, and a clearance is created between the piston and nut sleeve. At this time, while rotating around the push rod, the nut sleeve moves until it makes contact with the piston and performs the adjust operation.

        A00XRAOC01
        *1 Disc Pad *2 Piston
        *3 Push Rod *4 Disc Rotor
        *5 Nut Sleeve - -
        *a This illustration is an example only. - -

      6. When the hydraulic pressure rises further, the nut sleeve does not rotate and the push rod pushes down the spring. Over adjustment is prevented by the push rod sliding together with the piston, and the correct clearance between the disc pad and disc rotor is maintained.

        A00XRNHC01
        *1 Disc Pad *2 Piston
        *3 Push Rod *4 Disc Rotor
        *5 Nut Sleeve *6 Spring
        *a This illustration is an example only. - -