Old Clock

I have an old hanging clock that came from my parents. I think it is one that my dad put together. We have been having trouble with it lately as it seems to stop frequently. I think the winding mechanism is not working properly. I wonder too if I over wind it . Last night I made sure it was working and within an hour it had stopped again. I am not sure if I can just buy a new part so that it works the way it should. It is such a nice looking clock. I just want it to work correctly so I don't have to wind it every day.