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.
miâ²tral valve`. the valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue, that prevents blood from flowing back into the atrium when the ventricle contracts. Also called bicuspid valve.Compare tricuspid valve.iâ²tral valve`. the valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue, that prevents blood from flowing back into the atrium when the ventricle contracts. Also called bicuspid valve.