Also use between tooth seal volume change to achieve suction hydraulic oil.
也是利用齿间密封容积的变化来实现吸油压油的。
The oil pump drive gear oil seal is damaged, the air into the hydraulic system;
油泵主动齿轮油封损坏，空气进入液压系统；
The oil pump drive gear oil seal is damaged, the air into the hydraulic system;
油泵主动齿轮油封损坏，空气进入液压系统；
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