1, ubuchwepheshe bokusebenza be-excavator Okokuqala ukuqinisekisa isimo esizungeze i-. Ukusebenza kwe-Rotary, ezungeze izithiyo, isimo sendawo ukwazi amaphuzu, ukusebenza okuphephile; ukusebenza, ukuqinisekisa i-fore-and-aft direction track, ukugwema ukuncipha noma umthelela; zama ukunganikeli idrayivu yokugcina ebusweni benkomba yezimayini, kungenjalo kube lula ukulimaza i-motor egijima noma i-hose; ukusebenza, ukuqinisekisa ithrekhi elungile ngokuxhumana okugcwele nomhlabathi, kukhulisa ukuzinza okunamandla komshini ophelele. 2, indlela ephumelelayo yezimayini Lapho isilinda sebhakede nesixhumanisi esiphakathi kwenduku yebhakede, isilinda nebhakede lenduku liwela kuma-90 degrees, amandla amakhulu okumba; amazinyo ebhakede kanye nomhlabathi nge-degree engu-30 degree, okumba okungcono kakhulu ukuthi umhlabathi usika ukumelana ubuncane; ngokumbiwa kwenduku yebhakede, ...