What if the cylinder moves 90 degrees?

If the cylinder moves 90 degrees, first check whether the piston rod of the cylinder is loose. If it is loose, you can tighten the piston rod by adjusting the bolt. Secondly, it is necessary to check whether any foreign matter enters the piston rod of the cylinder, and if so, it can be solved by cleaning the foreign matter inside the cylinder; Finally, check whether the piston rod of the cylinder is damaged. If it is damaged, it can be solved by replacing the piston rod with a new one.