发动机维修作业取出活塞连杆组后，在组装时必须对活塞环进行选配安装，平时的一般维修作业，沿用的仅是关注切口的方向和角度，但却往往忽视进行全面检测和其它一些方面的工艺处理，直接给使用带来影响。因此，应重视活塞环的选配工艺，消除因活塞环选配不当所带来的影响和危? Engine maintenance operations Remove the piston rod group, the assembly must be optional piston ring installation, the usual general maintenance operations, the use of only focus on the incision direction and angle, but often neglected to conduct a comprehensive test and other aspects Process, directly to the use of impact. Therefore, the piston ring should pay attention to the matching process to eliminate the impact due to improper selection of piston rings and danger?