■ Ukulawulwa kwesisindo sethebhulethi okuzenzakalelayo;
■Isistimu ye-hydraulic ezenzakalelayo;
■ Uhlelo lokuthambisa oluzenzakalelayo;
■ Ukulahlwa kwethebhulethi eyodwa okuzenzakalelayo (okwenziwe ngokwezifiso) kanye nokusebenza okuzenzakalelayo kokwala inqwaba kuyatholakala: umsebenzi wokulahlwa kwethebhulethi eyodwa ukhipha ithebhulethi engafanelekile ibe yindlela yamaphilisi kadoti kuyilapho umsebenzi wokwenqaba iqoqo unikeza amandla okwenqaba amaphilisi ngeqoqo;
■ Ukuvala shaqa okuzenzakalelayo esimweni sokucindezela okudlula imikhawulo emisiwe, ekwazi ukuvimbela ingcindezi enkulu ukuba idlule umkhawulo wokucindezela omisiwe;
■ Ukuvala shaqa okuzenzakalelayo lapho kwenzeka noma yikuphi ukwehluleka, opharetha uzoxwayiswa nge-alamu;