You're in an amusement park unreal beauty. But he will not do. Falling apart, children should not ride on such a swing. And what do you do? We repaired. All gradually, you will be shown the problem and provided a tool for its repair. Walk through all the points, do everything perfect because it is for children. I'm sure you're a handyman, and perfectly cope with the task. Have a good mood and a lot of effort. Enjoy your vacation!