Uma kunenkinga ngeketanga lesikhathi, iningi labo lizoba nama-precursors, isibonelo, injini izokwenza umsindo. Ngaphezu kwalokho, inkinga yokuhluleka kochungechunge lwesikhathi ingase ithinte ukwanda kokusetshenziswa kukaphethiloli wemoto, ubunzima bokuqalisa imoto, ukusheshisa okubuthakathaka, ukuphendula kancane, kanye nokukhipha umoya omubi.

Iketanga lesikhathi ligcotshwa ngamafutha okugcoba. Uma uwoyela wokugcoba injini ungashintshiwe isikhathi eside noma izinga likawoyela lingelihle, kuzokwandisa kalula ukungqubuzana phakathi kweketango lesikhathi kanye ne-sprocket futhi kufinyeze impilo yeketango lesikhathi. Uma ukuhuzuka kubi, iketango lesikhathi lithanda ukungasebenzi kahle noma ukulimala, futhi lizonwetshwa kancane kancane, futhi elide lingase libonakale ligxuma liphuma emazinyweni, kubangele ukwehluleka kwenjini.

Uma i-timing chain igxuma amagiya, imoto izophuma futhi izizwe ibuthakathaka. Uma ukugxuma kwezinyo kukubi, injini izothuthumela futhi idlidlize, okungase futhi kubangele ubunzima ekuqaliseni imoto, futhi kulimaze ivalvu. Uma ufuna ukuhlola ukuthi uchungechunge lwesikhathi lunwetshiwe yini, ungasebenzisa ibhalansi yasentwasahlobo ukuze uhlole ukunwebeka kweketango ezindaweni ezintathu noma ngaphezulu. Uma idlula ubude obusetshenzisiwe, kufanele ishintshwe ngokushesha; indlela yobungcweti kakhulu ukuya esitolo se-4S ukuze uyifunde. Hlola inzwa ye-crankshaft kanye nenzwa ye-camshaft. Uma kune-alamu yokulibaziseka kokujikeleza, kungase kube nengozi efihliwe yokwelulwa kweketango, futhi kufanele ilungiswe noma ishintshwe ngokushesha.