Choosing our product, in order to keep the CH series construction hoists operate smoothly and safely ,our after-sale service department make following maintenance tips to follow :
  In normal service conditions,we should add 2# or 3# lithium saponify every two weeks ,otherwise, it will result in abnormal noise.

Remark:greasing the ithium saponify to the red circle indicated in the picture ,after greasing ,rotate the gear 180°and greasing the lithium again.