Kungani amabhuleki ekhala?
Kwesinye isikhathi amabhuleki ezinye izimoto angakhala ngesikhathi sokusebenza.
Lesi simo singabangelwa izizathu eziningana. 
Ezinye izinhlobo zamaphedi amabhuleki zenza isixwayiso sizwakale njengekhwela ngaphambi kokuphela kwempilo yazo yesevisi, bese kudingeka ukuthi zishintshwe.
Isizathu sesibili salo mphumela izinhlobo ezihlukahlukene zokungcola eziye zanqwabelana endaweni ye-caliper, okuthi, lapho amabhuleki esebenza, aguqe kuma-disc, enze i-rattle. Lesi sici singaqedwa ngempumelelo ngokuhlanza uhlelo noma ukufaka amaphedi esikhundleni.
