1. Check whether the lubrication of the bearing is good
2. Check whether all fasteners are fastened or not.
3, Check whether the transmission belt is installed correctly and in good condition. If the belt damage is found, it should be replaced in time. When there is oil contamination on the belt or grooved wheel, clean it up and wipe it in time.
4, Check the protective device is good, if the protective device is unsafe, it should be eliminated in time.
5. Check whether there is any material or other sundries in the damaged cavity, if it should be cleaned up sometimes.
6, Check the head of the hydraulic jacking machine or the top of the top silk rod back, adjust whether the gasket is installed correctly and pressed.