Sealing Ring Foot Brake, Front And Rear

WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

Braking

Fig 1: Identifying Sealing Ring

Courtesy of VOLVO CARS CORPORATION

The sealing ring (10) is tensioned by means of the piston being pressed against the brake disc.

Resting position

Fig 2: Identifying Sealing Ring

Courtesy of VOLVO CARS CORPORATION

The tension in the sealing ring (10), which was previously generated by applying the brakes, causes the piston to be pushed back to the resting position. When the brake pads wear, the rubber seal cannot follow, instead the piston slides through the sealing ring until the brake pads come into contact with the brake disc. This produces a self-adjustment between brake disc and brake pad.