求翻译：2）舌油圈安装不正确刮油圈位于外筒底部的锁紧螺母上, 刮油圈内径为锥形, 在安装时内径下端应向下, 如反转安装将造成渗油并可能减少动封严的寿命。因此, 需正确安装。是什么意思？

2) oil ring tongue scraper ring is not installed correctly at the bottom of the outer cylinder lock nut on the wiper ring inner diameter of cone at the bottom diameter should be installed, such as reverse installation will result in oil leakage and may reduce the dynamic seal life. Therefore, the ne

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正在翻译，请等待...

2) tongue oil ring is not properly installed oil scraper ring is located on the bottom of the outer lock nut, oil scraper ring diameter cone bottom inner diameter should be down during the installation, such as reverse installation will result in dynamic sealing of oil leakage and may reduce life ex

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