Popeza mitundu yonse ya pulley sikusinthana, Choncho, ndikofunika kugwiritsa ntchito mtundu wa pulley womwe poyamba unali ndi galimoto.Choncho, ngati galimoto ikufuna ma pulleys olimba, OWC kapena oad, ma pulleys amtundu womwewo ayenera kuikidwa.Monga chigawo china chilichonse, ma alternator pulleys opitilira muyeso sadzakhalapo mpaka kalekale (akatswiri adzalowa m'malo ochulukirachulukira).Ma pulleys otha amatha kuyambitsa kugwedezeka kwa lamba woyendetsa ndipo nthawi zambiri amayambitsa kuwonongeka kwa cholumikizira.