Bophahamo ba naha bo phahameng ba piston bo eketsehile ha nako e ntse e ea ho boloka boemo ba silindara. Ka lebaka la ho eketseha ha litekanyo tsa mobu, li-deposit mobung o ka holimo li fetohile tse mahlonoko haholo ho feta lienjineri tse khuts'oane tse holimo. The PC-ring e tsebisitsoe ho tloha 2000. (PS:Bakeng sa nts'etsopele ea piston e tla hatisoa sehloohong se secha.

Lesale la ho hloekisa piston le hlophisitsoe ka holimo ho li-cylinder liner.Lesale la ho hloekisa piston le kenngoa ho sireletsa khahlanong le ho hahoa ha depositi e feteletseng holim'a moqhaka oa piston ka ho senya li-deposit ha piston e atamela setsi sa top dead (TDC).
Mehele ea ho hloekisa piston e nchafatsoa ka ho bokella boiphihlelo.