Cylinders must be cleaned thoroughly after the honing or Boring operation. Even slight traces of grit or dust left on the cylinder walls may cause rapid ring and wall wear and early engine failure.

• 镗削和衍磨加工之后,气缸必须彻底清洁。残留在气缸壁上的砂砾或尘埃所造成的划痕,均能引起活塞环和气缸壁的迅速磨损以及发动机的早期损坏。