Cov neeg siv khoom muaj cov khoom siab siab rau cov khoom txab chassis. Thaum sheet hlau ua chassis txee rau khaub ncaws, tsos yuav tsum zoo li tseem yog nruj heev. Kev tshwm sim tsis yog tsuas yog cuam tshuam nrog cov teeb meem ntawm kev zoo nkauj, tab sis kuj ncaj qha qhia qhov zoo ntawm cov khoom, tab sis kuj muaj cov txiaj ntsig zoo rau kev siv yav tom ntej.
Qhov tseem ceeb ntawm cov tsos ntawm chassis txee yog qhov qhia tus kheej. Txhawm rau kom tsis txhob cuam tshuam nrog cov khoom kom zoo vim tias cov tsos, koj yuav tsum ua tib zoo saib thaum tsim khoom. Cov teeb meem kev tshwm sim yuav tsum tau kho nyob rau hauv lub sijhawm, lossis txawm tias tshem tawm. Cov ntawv hlau ua chassis txee yog xyuam xim:
1. Lub txheej txheej saum npoo ntawm chassis txee yuav tsum yog yam zoo ib yam, tsis muaj sagging los yog hauv qab kis tawm.
2. Lub logo yuav tsum ua kom tiav, meej, ruaj thiab txhim khu kev qha, thiab tus lej xov tooj yuav tsum tsis ploj.
3. Txhua lub vaj huam sib luag ntawm lub chassis txee yuav tsum yog tiaj tus yam tsis muaj qhov deformation, thiab qhov qhib ntawm lub qhov rooj txee yuav tsum yog tiaj tus.
4. Qhov loj yuav tsum ua tau raws li qhov yuav tsum ua, thiab qhov yuam kev yuav tsum tsis txhob loj heev.
