Check and replace the O-ring of the piston head.
检查和更换活塞头的O型圈。
The piston head or "crown" is the top surface against which the explosive force is exerted.
活塞头部或“冠部”是整个活塞的最上端，处在燃烧室里要承受爆炸燃烧产生的力。
The structure, wear resistance and wear mechanism of laser quenched layer on the groove surface of the piston head were studied in this paper.
研究了大型柴油机活塞项环槽激光淬火层的组织、耐磨性和磨损机理。
The rings have joints (they are split) so that they can be expanded and slipped over the piston head and into the recessed grooves cut in the piston.
活塞环有接口（也就是有一缝隙），这样可以使端部扩张并滑入活塞上的凹槽中。
The invention discloses a method for welding pistons by laser. The method comprises: a piston head and a piston skirt, which are respectively made, are welded into a whole by laser;
本发明公开了一种激光焊接活塞的方法，将分别制造的活塞头部和 活塞裙部，通过激光焊接连为一体；
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.
应彻底清洗所有和物料接触的部件，包括活塞缸、活塞头、O型圈、单向阀、灌装头、料桶、料斗等，发现破裂损伤的密封应及时进行更换。
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.
应彻底清洗所有和物料接触的部件，包括活塞缸、活塞头、O型圈、单向阀、灌装头、料桶、料斗等，发现破裂损伤的密封应及时进行更换。
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