Izici zenqubo:I-cylinder block ihlanganiswe nendawo ye-gear kanye nesakhiwo se-water pump, futhi isakhiwo sokubumba siyinkimbinkimbi. Ukubumba kwenziwa ngenqubo yokubumba eqondile + ukuhlanganisa i-core eyodwa kanye nenqubo yokugcobisa eyodwa, ngokunemba okuphezulu kwezinga lokubumba kanye nokuhambisana okuhle kobukhulu kodonga lwembobo ye-cylinder.