All distend cover of relevant parts surface before assembling must be washes clean, and ratherish besmear the oil.

胀套在装配之前所有相关零件表面必须清洗干净，并稍稍涂油。

youdao

All distend cover of relevant parts surface before assembling must be washes clean, and ratherish besmear the oil.

胀套在装配之前所有相关零件表面必须清洗干净，并稍稍涂油。

youdao