拆除密封的时候，我们要注意以下几点：
When removing the seal, we should pay attention to the following points:
1. 在拆除过程中，必须十分的小心以避免有任何的损伤掩盖了原先导致密封失效的真实原因；
1. In the removal process, great care must be taken to avoid any damage covering the real cause of the original seal failure;
2. 在拆除部件时必须注意观察并作好记录，然后再拆卸下一个部件；
2. Pay attention to observation and make records when removing parts, and then dismantle the next part;
3.必须对观察到的故障进行分类，比如磨损，干转，密封环发出声音等。
3. It is necessary to classify the observed faults, such as wear, dry rotation, sound of sealing ring, etc.