Iloli lethangi ngokuyinhloko liqukethe umzimba wethangi, i-chassis, nezici zokuphepha. Sizochaza ngayinye yalezi ngokuningiliziwe ngezansi.
1. Umzimba Wethangi: Umzimba wethangi uyingxenye eyinhloko yeloli, esetshenziselwa ukulayisha nokuthutha uwoyela. Ngokuya ngenhloso nokwakheka kwayo, imizimba yamathangi ingahlukaniswa njenge-oval, isikwele, noma iyindilinga. Umzimba wethangi ngokuvamile wenziwe-ngensimbi yamandla aphezulu noma i-aluminium alloy, enikeza ukuvala kahle okuhle nokungagqwali. Izici zangaphakathi ezifana namaphaneli{5}aphukayo afakiwe nawo afakwe ukuze kuncishiswe ukushelela kanye nomthelela ngesikhathi sokuthutha.
2. I-Chassis: I-chassis iwumthwalo-ophethe ingxenye yeloli yethangi futhi ikakhulukazi iqukethe ifremu, isistimu yokumiswa, namathayi. Idizayini ye-chassis kufanele icabangele izici ezifana nomthamo womthwalo weloli, ukuzinza kokushayela, kanye nokuhamba kahle. Ukuze kuhlangatshezwane nezidingo-zezokuthutha ezihamba amabanga amade, amaloli amathangi ngokuvamile ahlome{5}}izinjini ezisebenza kahle kanye nama-transmissions ukuqinisekisa ukusebenza okuzinzile kuzo zonke izimo zomgwaqo.
3. Izici zokuphepha: Izici zokuphepha zibalulekile ekuqinisekiseni ukusebenza ngokuphephile kwamaloli amathangi futhi zifaka phakathi{1}}izinto ezilwa namagciwane, amasistimu okucisha umlilo, namavalvu okuphepha. I-Anti{3}}Izisetshenziswa ezimile zisetshenziselwa ngokuyinhloko ukuqeda ugesi omile okhiqizwa ngesikhathi sokuthutha, ukuvimbela imililo ebangelwa ugesi omile. Imishini yokucisha umlilo isetshenziselwa ukucisha umlilo ngokushesha futhi uvimbele ukusabalala kwawo. Amavalvu okuphepha asetshenziselwa ukukhulula igesi ngokuzenzakalelayo lapho umfutho wethangi wangaphakathi uba ngokwedlulele, okunciphisa ingozi yokuqhuma.