Monga makina olemera omwe amagwiritsidwa ntchito kwambiri pomanga, migodi, madoko ndi mafakitale ena, valve yoyendetsa liwiro la Carter loader ndi gawo lofunikira kuti akwaniritse ntchito yosintha liwiro. Komabe, pakugwiritsa ntchito kwenikweni, zolephera zosiyanasiyana zimatha kuchitika mu valve yowongolera liwiro, zomwe zimakhudza zachilendo ...
Werengani zambiri