1 Swap in a new set of shoes, reconnect the brackets & springs, put the drum back on and youâre done.  Thereâs no need for compressors, or opening fluid lines to retract pistons with these setups. As a matter of fact, replacing brake shoes on some vehicles can be accomplished in under 2 minutes, once the drum is removed.
The bicuspid valve, sometimes better known as the mitral valve, allows blood to flow in only one direction (assuming it is functional) from the left atrium to the left ventricle, it prevents blood from flowing back from the left ventricle into the left atrium.
valve between left atrium and ventricle in heart; prevents blood from flowing backwards into atrium; also called bicuspid valve because it has two cusps or flaps pulmonary valve semilunar valve between right ventricle and pulmonary artery in heart; prevents blood from flowing backwards into ventricle