Whereas, the worn wheel cylinder parts need to be repaired or replaced for better performance of Scion cars. The removal process is as follows. First, remove the brake drum and brake shoes. Next, disconnect the hydraulic brake line fitting that screws into the back of the wheel cylinder. Then, remove the mounting hardware which will allow it to be removed from the backing plate. There are much better and smarter parts and devices. Whatever you need for Scion cars and their parts, we will try our best to meet your demands.