Observable Indications ntawm poob
Tshawb xyuas cov kab hauv qab kom pom cov cim pom ntawm kev poob qis, suav nrog cov khoom khoov lossis tawg, tsis tuaj lossis tsis muaj bolts, thiab hnyav hnyav ntawm cov lem thiab cov ntaub qhwv. Cov teeb pom kev pom no tuaj yeem qhia txog cov teeb meem uas yuav tsum tau ua tam sim.
Thaum kuaj xyuas lub undercarriage, nco ntsoov xyuas kom meej rau txhua qhov kev qhia ntawm qhov khoov lossis tawg. Cov no tej zaum yuav tshwm sim los ntawm kev cuam tshuam hnyav lossis kev sib tsoo. Yog tias koj pom tias muaj qhov tsis sib xws hauv cov qauv ntawm lub tsheb hauv qab, nws yog ib qho tseem ceeb uas yuav tsum tau hais rau lawv tam sim ntawd kom tsis txhob muaj kev puas tsuaj ntxiv.
Ntxiv thiab,
nyob rau hauv saib rau qhov ploj los yog xoob bolts. Sij hawm dhau mus, kev vibrations thiab kev siv tas mus li tuaj yeem ua rau cov bolts loosen lossis txawm tawm.Qhov no tuaj yeem cuam tshuam qhov kev ruaj ntseg ntawm lub tsheb thauj mus los thiab ua rau muaj teeb meem loj dua yog tias tsis hais txog.
Tsis tas li ntawd xwb, ntau dhau deterioration ntawm lem thiab pads tuaj yeem yog ib qho cim ntawm cov teeb meem hauv qab.Cov khoom siv no yog qhov tseem ceeb rau kev ua kom zoo traction thiab maneuverability ntawm cov cuab yeej. Yog tias koj pom qhov hnav tsis zoo lossis tsis sib xws ntawm hnav ntawm cov khoom no,
Nws yog ib qho tseem ceeb los daws qhov teeb meem los tiv thaiv kev puas tsuaj ntxiv thiab tswj kev ua haujlwm zoo. 
