First of all you need to remove the wheel, clean up the dirt and rust two rail-bolt guides and remove them. Then we need to remove the piston and clean it from the hardened mud. The piston polishing is most likely to be done, and it will be very difficult to put him to bed. You have to be very careful about the piston. It must not be checked because it will cause the dust to be damaged and must be replaced.
New pads should have some degree of freedom at landing sites. If they stay tight and don't move, you have to clean the rails.
You can now gather everything in reverse order.
