Izingxenye zokudlulisela zesistimu yesikhathi zihlukaniswe zaba izinhlobo ezimbili: uchungechunge lwesikhathi nebhande lesikhathi. Ziyizingxenye ezibalulekile zesitimela se-valve enjinini futhi zihlobene nesiphetho esiyinhloko senjini. Uma kunenkinga ngebhande le-timing noma i-timing chain, kuzoletha izinkinga eziningi enjinini, futhi kubangele ukuthi ichithwe yonke injini.
Amabhande esikhathi ngokuvamile enziwa ngerabha, azoguga noma aguge ngokwenyuka kwesikhathi sokusebenza kwenjini. Ngakho-ke, ngemva kwesikhathi esithile, ibhande lesikhathi kanye nezesekeli zalo zidinga ukushintshwa. Iketango lesikhathi ngokuvamile lenziwa ngezinto ezixubile. Ngaphakathi enjinini, igcotshwa ngamafutha emvelo. Impilo yesevisi ingachithwa kuze kube yilapho imoto ilahliwe. Kodwa-ke, empeleni, i-chain tensioner nayo inempilo evamile yokugqoka. Uma kuqhathaniswa nekhithi yebhande lesikhathi, intengo yezingxenye ngokwemvelo incane kakhulu.
Izimoto ezisebenzisa amabhande esikhathi kufanele zishintshwe ngokuhambisana ngokuqinile nomjikelezo wokushintshwa. Ngokuvamile, kufanele zishintshwe lapho imoto ihamba ibanga elingamakhilomitha angu-60 000 kuya ku-100,000. Iketanga lesikhathi ngeke linqamuke futhi lidinga ukushintshwa kuphela uma lehluleka. Umjikelezo omude wokushintsha kuyinzuzo enkulu yeketango, kodwa okubi ukuthi uma lehluleka, izindleko zokulilungisa zizoba phezulu kakhulu.
