Removing the brake drum (see Brake drum replacement).
Prying off with a screwdriver, first remove one, then the other, lower parts of the brake pads from the support and slide the pads down.
key «on 10» (or special «brake» key) unscrew the brake pipe fitting. To avoid loss of brake fluid, we put a protective cap from the bleeder on the end of the tube.
head «on 10» unscrew the two bolts securing the cylinder to the brake shield...
...and remove the cylinder.
Install the cylinder in the reverse order of removal. After Assembly (including brake drum installation) we pump the brake system from the side of the replaced cylinder.